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The MIT License (MIT)
Copyright (c) 2022 Paul Miller (https://paulmillr.com)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the “Software”), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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# noble-hashes
Audited & minimal JS implementation of hash functions, MACs and KDFs.
- 🔒 [**Audited**](#security) by an independent security firm
- 🔻 Tree-shakeable: unused code is excluded from your builds
- 🏎 Fast: hand-optimized for caveats of JS engines
- 🔍 Reliable: chained / sliding window / DoS / ACVP tests and fuzzing
- 🔁 No unrolled loops: makes it easier to verify and reduces source code size up to 5x
- 🦘 Includes SHA, RIPEMD, BLAKE, HMAC, HKDF, PBKDF, Scrypt, Argon2
- 🥈 Optional, friendly wrapper over native WebCrypto
- 🪶 22KB (gzipped) for everything, 2.4KB for single-hash build
Use [awasm-noble](https://github.com/paulmillr/awasm-noble) if you need an even faster (WASM) alternative.
Check out [Upgrading](#upgrading) for information about upgrading from previous versions.
Take a glance at [GitHub Discussions](https://github.com/paulmillr/noble-hashes/discussions) for questions and support.
The library's initial development was funded by [Ethereum Foundation](https://ethereum.org/).
### This library belongs to _noble_ cryptography
> **noble cryptography** — high-security, easily auditable set of contained cryptographic libraries and tools.
- Zero or minimal dependencies
- Highly readable TypeScript / JS code
- PGP-signed releases and transparent NPM builds
- All libraries:
[ciphers](https://github.com/paulmillr/noble-ciphers),
[curves](https://github.com/paulmillr/noble-curves),
[hashes](https://github.com/paulmillr/noble-hashes),
[post-quantum](https://github.com/paulmillr/noble-post-quantum),
5kb [secp256k1](https://github.com/paulmillr/noble-secp256k1) /
[ed25519](https://github.com/paulmillr/noble-ed25519)
- [Check out the homepage](https://paulmillr.com/noble/)
for reading resources, documentation, and apps built with noble
## Usage
> `npm install @noble/hashes`
> `deno add jsr:@noble/hashes`
We support all major platforms and runtimes.
For React Native, you may need a [polyfill for getRandomValues](https://github.com/LinusU/react-native-get-random-values).
A standalone file [noble-hashes.js](https://github.com/paulmillr/noble-hashes/releases) is also available.
```js
// import * from '@noble/hashes'; // Error: use sub-imports, to ensure small app size
import { sha256 as noble_sha256 } from '@noble/hashes/sha2.js';
const hash = noble_sha256(Uint8Array.from([0xca, 0xfe, 0x01, 0x23]));
// Available modules
import { sha256, sha384, sha512, sha224, sha512_224, sha512_256 } from '@noble/hashes/sha2.js';
import {
sha3_256, sha3_512,
keccak_256, keccak_512,
shake128, shake256,
} from '@noble/hashes/sha3.js';
import {
cshake256, turboshake256, kmac256, tuplehash256,
kt128, kt256, keccakprg,
} from '@noble/hashes/sha3-addons.js';
import { blake3 } from '@noble/hashes/blake3.js';
import { blake2b, blake2s } from '@noble/hashes/blake2.js';
import { blake256, blake512 } from '@noble/hashes/blake1.js';
import { sha1, md5, ripemd160 } from '@noble/hashes/legacy.js';
import { hmac } from '@noble/hashes/hmac.js';
import { hkdf } from '@noble/hashes/hkdf.js';
import { pbkdf2, pbkdf2Async } from '@noble/hashes/pbkdf2.js';
import { scrypt, scryptAsync } from '@noble/hashes/scrypt.js';
import { argon2d, argon2i, argon2id } from '@noble/hashes/argon2.js';
import * as webcrypto from '@noble/hashes/webcrypto.js';
// const { sha256, sha384, sha512, hmac, hkdf, pbkdf2 } = webcrypto;
import * as utils from '@noble/hashes/utils.js';
const { bytesToHex, concatBytes, equalBytes, hexToBytes } = utils;
```
- [sha2: sha256, sha384, sha512](#sha2-sha256-sha384-sha512-and-others)
- [sha3: FIPS, SHAKE, Keccak](#sha3-fips-shake-keccak)
- [sha3-addons: cSHAKE, KMAC, KT128, TurboSHAKE](#sha3-addons-cshake-kmac-kt128-turboshake)
- [blake1, blake2, blake3](#blake1-blake2-blake3)
- [legacy: sha1, md5, ripemd160](#legacy-sha1-md5-ripemd160)
- MACs: [hmac](#hmac) | [kmac](#sha3-addons-cshake-kmac-kt128-turboshake) | [blake3 key mode](#blake1-blake2-blake3)
- KDFs: [hkdf](#hkdf) | [pbkdf2](#pbkdf2) | [scrypt](#scrypt) | [argon2](#argon2)
- [webcrypto: friendly wrapper](#webcrypto-friendly-wrapper)
- [utils](#utils)
- [Security](#security) | [Speed](#speed) | [Contributing & testing](#contributing--testing) | [License](#license)
### Implementations
Hash functions:
- `sha256()`: receive & return `Uint8Array`
- `sha256.create().update(a).update(b).digest()`: support partial updates
- `blake3.create({ context: 'e', dkLen: 32 })`: can have options
- support little-endian architecture; also experimentally big-endian
- can hash up to 4GB per chunk, with any amount of chunks
#### sha2: sha256, sha384, sha512 and others
```typescript
import { sha224, sha256, sha384, sha512, sha512_224, sha512_256 } from '@noble/hashes/sha2.js';
const res = sha256(Uint8Array.from([0xbc])); // basic
for (let hash of [sha256, sha384, sha512, sha224, sha512_224, sha512_256]) {
const arr = Uint8Array.from([0x10, 0x20, 0x30]);
const a = hash(arr);
const b = hash.create().update(arr).digest();
}
```
Check out [RFC 4634](https://datatracker.ietf.org/doc/html/rfc4634) and
[the paper on truncated SHA512/256](https://eprint.iacr.org/2010/548.pdf).
#### sha3: FIPS, SHAKE, Keccak
```typescript
import {
sha3_224, sha3_256, sha3_384, sha3_512,
keccak_224, keccak_256, keccak_384, keccak_512,
shake128, shake256,
} from '@noble/hashes/sha3.js';
for (let hash of [
sha3_224, sha3_256, sha3_384, sha3_512,
keccak_224, keccak_256, keccak_384, keccak_512,
]) {
const arr = Uint8Array.from([0x10, 0x20, 0x30]);
const a = hash(arr);
const b = hash.create().update(arr).digest();
}
const shka = shake128(Uint8Array.from([0x10]), { dkLen: 512 });
const shkb = shake256(Uint8Array.from([0x30]), { dkLen: 512 });
```
Check out [FIPS-202](https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.202.pdf),
[Website](https://keccak.team/keccak.html).
Check out [the differences between SHA-3 and Keccak](https://crypto.stackexchange.com/questions/15727/what-are-the-key-differences-between-the-draft-sha-3-standard-and-the-keccak-sub)
#### sha3-addons: cSHAKE, KMAC, K12, TurboSHAKE
```typescript
import {
cshake128, cshake256, kt128, kt256,
keccakprg, kmac128, kmac256,
parallelhash256, tuplehash256,
turboshake128, turboshake256,
} from '@noble/hashes/sha3-addons.js';
const data = Uint8Array.from([0x10, 0x20, 0x30]);
const personalization = new TextEncoder().encode('def');
const ec1 = cshake128(data, { personalization });
const ec2 = cshake256(data, { personalization });
const et1 = turboshake128(data);
const et2 = turboshake256(data, { D: 0x05 });
// tuplehash(['ab', 'c']) !== tuplehash(['a', 'bc']) !== tuplehash([data])
const et3 = tuplehash256([new TextEncoder().encode('ab'), new TextEncoder().encode('c')]);
// Not parallel in JS (similar to blake3 / kt128), added for compat
const ep1 = parallelhash256(data, { blockLen: 8 });
const kk = Uint8Array.from([0xca]);
const ek10 = kmac128(kk, data);
const ek11 = kmac256(kk, data);
const ek12 = kt128(data); // kangarootwelve 128-bit
const ek13 = kt256(data); // kangarootwelve 256-bit
// pseudo-random generator, first argument is capacity. XKCP recommends 254 bits capacity for 128-bit security strength.
// * with a capacity of 254 bits.
const p = keccakprg(254);
p.addEntropy(Uint8Array.from([1, 2, 3]));
const rand1b = p.randomBytes(32);
```
- cSHAKE, KMAC, TupleHash, ParallelHash + XOF are available, matching
[NIST SP 800-185](https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-185.pdf)
- Reduced-round Keccak KT128 (KangarooTwelve 🦘, K12) and TurboSHAKE are available, matching
[RFC 9861](https://datatracker.ietf.org/doc/rfc9861/).
- [KeccakPRG](https://keccak.team/files/CSF-0.1.pdf): pseudo-random generator based on Keccak
#### blake1, blake2, blake3
```typescript
import { blake224, blake256, blake384, blake512 } from '@noble/hashes/blake1.js';
import { blake2b, blake2s } from '@noble/hashes/blake2.js';
import { blake3 } from '@noble/hashes/blake3.js';
for (let hash of [blake224, blake256, blake384, blake512, blake2b, blake2s, blake3]) {
const arr = Uint8Array.from([0x10, 0x20, 0x30]);
const a = hash(arr);
const b = hash.create().update(arr).digest();
}
// blake2 advanced usage
const ab = Uint8Array.from([0x01]);
const txt = new TextEncoder();
blake2s(ab);
blake2s(ab, { key: new Uint8Array(32) });
blake2s(ab, { personalization: txt.encode('pers1234') });
blake2s(ab, { salt: txt.encode('salt1234') });
blake2b(ab);
blake2b(ab, { key: new Uint8Array(64) });
blake2b(ab, { personalization: txt.encode('pers1234pers1234') });
blake2b(ab, { salt: txt.encode('salt1234salt1234') });
// blake3 advanced usage
blake3(ab);
blake3(ab, { dkLen: 256 });
blake3(ab, { key: new Uint8Array(32) });
blake3(ab, { context: txt.encode('application-name') });
```
- Blake1 is legacy hash, one of SHA3 proposals. It is rarely used anywhere. See [pdf](https://www.aumasson.jp/blake/blake.pdf).
- Blake2 is popular fast hash. blake2b focuses on 64-bit platforms while blake2s is for 8-bit to 32-bit ones. See [RFC 7693](https://datatracker.ietf.org/doc/html/rfc7693), [Website](https://www.blake2.net)
- Blake3 is faster, reduced-round blake2. See [Website & specs](https://blake3.io)
#### legacy: sha1, md5, ripemd160
SHA1 (RFC 3174), MD5 (RFC 1321) and RIPEMD160 (RFC 2286) legacy, weak hash functions.
Don't use them in a new protocol. What "weak" means:
- Collisions can be made with 2^18 effort in MD5, 2^60 in SHA1, 2^80 in RIPEMD160.
- No practical pre-image attacks (only theoretical, 2^123.4)
- HMAC seems kinda ok: https://datatracker.ietf.org/doc/html/rfc6151
```typescript
import { md5, ripemd160, sha1 } from '@noble/hashes/legacy.js';
for (let hash of [md5, ripemd160, sha1]) {
const arr = Uint8Array.from([0x10, 0x20, 0x30]);
const a = hash(arr);
const b = hash.create().update(arr).digest();
}
```
#### hmac
```typescript
import { hmac } from '@noble/hashes/hmac.js';
import { sha256 } from '@noble/hashes/sha2.js';
const key = new Uint8Array(32).fill(1);
const msg = new Uint8Array(32).fill(2);
const mac1 = hmac(sha256, key, msg);
const mac2 = hmac.create(sha256, key).update(msg).digest();
```
Conforms to [RFC 2104](https://datatracker.ietf.org/doc/html/rfc2104).
#### hkdf
```typescript
import { hkdf } from '@noble/hashes/hkdf.js';
import { randomBytes } from '@noble/hashes/utils.js';
import { sha256 } from '@noble/hashes/sha2.js';
const inputKey = randomBytes(32);
const salt = randomBytes(32);
const info = new TextEncoder().encode('application-key');
const hk1 = hkdf(sha256, inputKey, salt, info, 32);
// == same as
import { extract, expand } from '@noble/hashes/hkdf.js';
const prk = extract(sha256, inputKey, salt);
const hk2 = expand(sha256, prk, info, 32);
```
Conforms to [RFC 5869](https://datatracker.ietf.org/doc/html/rfc5869).
#### pbkdf2
```typescript
import { pbkdf2, pbkdf2Async } from '@noble/hashes/pbkdf2.js';
import { sha256 } from '@noble/hashes/sha2.js';
const pbkey1 = pbkdf2(sha256, 'password', 'salt', { c: 524288, dkLen: 32 });
const pbkey2 = await pbkdf2Async(sha256, 'password', 'salt', { c: 524288, dkLen: 32 });
const pbkey3 = await pbkdf2Async(sha256, Uint8Array.from([1, 2, 3]), Uint8Array.from([4, 5, 6]), {
c: 524288,
dkLen: 32,
});
```
Conforms to [RFC 2898](https://datatracker.ietf.org/doc/html/rfc2898).
#### scrypt
```typescript
import { scrypt, scryptAsync } from '@noble/hashes/scrypt.js';
const scr1 = scrypt('password', 'salt', { N: 2 ** 16, r: 8, p: 1, dkLen: 32 });
const scr2 = await scryptAsync('password', 'salt', { N: 2 ** 16, r: 8, p: 1, dkLen: 32 });
const scr3 = await scryptAsync(Uint8Array.from([1, 2, 3]), Uint8Array.from([4, 5, 6]), {
N: 2 ** 17,
r: 8,
p: 1,
dkLen: 32,
onProgress(percentage) {
console.log('progress', percentage);
},
maxmem: 2 ** 32 + 128 * 8 * 1, // N * r * p * 128 + (128*r*p)
});
```
Conforms to [RFC 7914](https://datatracker.ietf.org/doc/html/rfc7914),
[Website](https://www.tarsnap.com/scrypt.html)
- `N, r, p` are work factors. It is common to only adjust N, while keeping `r: 8, p: 1`.
See [the blog post](https://blog.filippo.io/the-scrypt-parameters/).
JS doesn't support parallelization, making increasing `p` meaningless.
- `dkLen` is the length of output bytes e.g. `32` or `64`
- `onProgress` can be used with async version of the function to report progress to a user.
- `maxmem` prevents DoS and is limited to `1GB + 1KB` (`2**30 + 2**10`), but can be adjusted using formula: `N * r * p * 128 + (128 * r * p)`
Time it takes to derive Scrypt key under different values of N (2\*\*N) on Apple M4 (mobile phones can be 1x-4x slower):
| N pow | Time | RAM |
| ----- | ---- | ----- |
| 16 | 0.1s | 64MB |
| 17 | 0.2s | 128MB |
| 18 | 0.4s | 256MB |
| 19 | 0.8s | 512MB |
| 20 | 1.5s | 1GB |
| 21 | 3.1s | 2GB |
| 22 | 6.2s | 4GB |
| 23 | 13s | 8GB |
| 24 | 27s | 16GB |
> [!NOTE]
> We support N larger than `2**20` where available, however,
> not all JS engines support >= 2GB ArrayBuffer-s.
> When using such N, you'll need to manually adjust `maxmem`, using formula above.
> Other JS implementations don't support large N-s.
#### argon2
```ts
import { argon2d, argon2i, argon2id } from '@noble/hashes/argon2.js';
const arg1 = argon2id('password', 'saltsalt', { t: 2, m: 65536, p: 1, maxmem: 2 ** 32 - 1 });
```
Argon2 [RFC 9106](https://datatracker.ietf.org/doc/html/rfc9106) implementation.
> [!WARNING]
> Argon2 can't be fast in JS, because there is no fast Uint64Array.
> It is suggested to use [Scrypt](#scrypt) instead.
> Being 5x slower than native code means brute-forcing attackers have bigger advantage.
#### webcrypto: friendly wrapper
```js
import { sha256, sha384, sha512, hmac, hkdf, pbkdf2 } from '@noble/hashes/webcrypto.js';
import { randomBytes } from '@noble/hashes/utils.js';
const whash = await sha256(Uint8Array.from([0xca, 0xfe, 0x01, 0x23]));
const key = new Uint8Array(32).fill(1);
const msg = new Uint8Array(32).fill(2);
const wmac = await hmac(sha256, key, msg);
const inputKey = randomBytes(32);
const salt = randomBytes(32);
const info = new TextEncoder().encode('application-key');
const hk1 = await hkdf(sha256, inputKey, salt, info, 32);
const pbkey1 = await pbkdf2(sha256, 'password', 'salt', { c: 524288, dkLen: 32 });
```
Sometimes people want to use built-in `crypto.subtle` instead of pure JS implementation.
However, it has terrible API.
We simplify access to built-ins with API which mirrors noble-hashes.
The overhead is minimal - just 30+ lines of code, which verify input correctness.
> [!NOTE]
> Webcrypto methods are always async.
#### utils
```typescript
import { bytesToHex as toHex, randomBytes } from '@noble/hashes/utils.js';
console.log(toHex(randomBytes(32)));
```
- `bytesToHex` will convert `Uint8Array` to a hex string
- `randomBytes(bytes)` will produce cryptographically secure random `Uint8Array` of length `bytes`
## Security
The library has been audited:
- at version 2.2.0, in Apr 2026, by ourselves (self-audited)
- Scope: everything
- [Changes since audit](https://github.com/paulmillr/noble-hashes/compare/2.2.0..main)
- at version 1.0.0, in Jan 2022, independently, by [Cure53](https://cure53.de)
- PDFs: [website](https://cure53.de/pentest-report_hashing-libs.pdf), [in-repo](./audit/2022-01-05-cure53-audit-nbl2.pdf)
- Scope: everything, besides `blake3`, `sha3-addons`, `sha1` and `argon2`, which have not been audited
- The audit has been funded by [Ethereum Foundation](https://ethereum.org/en/) with help of [Nomic Labs](https://nomiclabs.io)
It is tested against property-based, cross-library and Wycheproof vectors,
and is being fuzzed in [the separate repo](https://github.com/paulmillr/fuzzing).
If you see anything unusual: investigate and report.
### Constant-timeness
We're targetting algorithmic constant time. _JIT-compiler_ and _Garbage Collector_ make "constant time"
extremely hard to achieve [timing attack](https://en.wikipedia.org/wiki/Timing_attack) resistance
in a scripting language. Which means _any other JS library can't have
constant-timeness_. Even statically typed Rust, a language without GC,
[makes it harder to achieve constant-time](https://www.chosenplaintext.ca/open-source/rust-timing-shield/security)
for some cases. If your goal is absolute security, don't use any JS lib — including bindings to native ones.
Use low-level libraries & languages.
### Memory dumping
The library shares state buffers between hash
function calls. The buffers are zeroed-out after each call. However, if an attacker
can read application memory, you are doomed in any case:
- At some point, input will be a string and strings are immutable in JS:
there is no way to overwrite them with zeros. For example: deriving
key from `scrypt(password, salt)` where password and salt are strings
- Input from a file will stay in file buffers
- Input / output will be re-used multiple times in application which means it could stay in memory
- `await anything()` will always write all internal variables (including numbers)
to memory. With async functions / Promises there are no guarantees when the code
chunk would be executed. Which means attacker can have plenty of time to read data from memory
- There is no way to guarantee anything about zeroing sensitive data without
complex tests-suite which will dump process memory and verify that there is
no sensitive data left. For JS it means testing all browsers (incl. mobile),
which is complex. And of course it will be useless without using the same
test-suite in the actual application that consumes the library
### Supply chain security
- **Commits** are signed with PGP keys to prevent forgery. Be sure to verify the commit signatures
- **Releases** are made transparently through token-less GitHub CI and Trusted Publishing. Be sure to verify the [provenance logs](https://docs.npmjs.com/generating-provenance-statements) for authenticity.
- **Rare releasing** is practiced to minimize the need for re-audits by end-users.
- **Dependencies** are minimized and strictly pinned to reduce supply-chain risk.
- We use as few dependencies as possible.
- Version ranges are locked, and changes are checked with npm-diff.
- **Dev dependencies** are excluded from end-user installs; they’re only used for development and build steps.
For this package, there are 0 dependencies; and a few dev dependencies:
- jsbt contains helpers for building, benchmarking & testing secure JS apps. It is developed by the same author
- prettier, fast-check and typescript are used for code quality / test generation / ts compilation
### Randomness
We rely on the built-in
[`crypto.getRandomValues`](https://developer.mozilla.org/en-US/docs/Web/API/Crypto/getRandomValues),
which is considered a cryptographically secure PRNG.
Browsers have had weaknesses in the past - and could again - but implementing a userspace CSPRNG is even worse, as there’s no reliable userspace source of high-quality entropy.
### Quantum computers
Cryptographically relevant quantum computer, if built, will allow to
utilize Grover's algorithm to break hashes in 2^n/2 operations, instead of 2^n.
This means SHA256 should be replaced with SHA512, SHA3-256 with SHA3-512, SHAKE128 with SHAKE256 etc.
Australian ASD prohibits SHA256 and similar hashes [after 2030](https://www.cyber.gov.au/resources-business-and-government/essential-cyber-security/ism/cyber-security-guidelines/guidelines-cryptography).
## Upgrading
Supported node.js versions:
- v2: v20.19+ (ESM-only)
- v1: v14.21+ (ESM & CJS)
v2.0 changelog:
- The package is now ESM-only. ESM can finally be loaded from common.js on node v20.19+
- `.js` extension must be used for all modules
- Old: `@noble/hashes/sha3`
- New: `@noble/hashes/sha3.js`
- This simplifies working in browsers natively without transpilers
- Only allow Uint8Array as hash inputs, prohibit `string`
- Strict validation checks improve security
- To replicate previous behavior, use `utils.utf8ToBytes`
- Rename / remove some modules for consistency. Previously, sha384 resided in sha512, which was weird
- `sha256`, `sha512` => `sha2.js` (consistent with `sha3.js`)
- `blake2b`, `blake2s` => `blake2.js` (consistent with `blake3.js`, `blake1.js`)
- `ripemd160`, `sha1`, `md5` => `legacy.js` (all low-security hashes are there)
- `_assert` => `utils.js`
- `crypto` internal module got removed: use built-in WebCrypto instead
- Improve typescript types & option autocomplete
- Bump compilation target from es2020 to es2022
## Contributing & testing
`test/misc` directory contains implementations of loop unrolling and md5.
- `npm install && npm run build && npm test` will build the code and run tests.
- `npm run lint` / `npm run format` will run linter / fix linter issues.
- `npm run bench` will run benchmarks
- `npm run build:release` will build single file
- There is **additional** 20-min DoS test `npm run test:dos` and 2-hour multicore test `npm run test:slow`.
See [our approach to testing](./test/README.md)
Some hashes are outside of scope of the library:
- [Pedersen in micro-zk-proofs](https://github.com/paulmillr/micro-zk-proofs/blob/1ed5ce1253583b2e540eef7f3477fb52bf5344ff/src/pedersen.ts)
- [Poseidon in noble-curves](https://github.com/paulmillr/noble-curves/blob/3d124dd3ecec8b6634cc0b2ba1c183aded5304f9/src/abstract/poseidon.ts)
- [Poly1305 & GHash in noble-ciphers](https://github.com/paulmillr/noble-ciphers)
See [paulmillr.com/noble](https://paulmillr.com/noble/) for useful resources, articles, documentation and demos related to the library.
## Speed
```sh
npm run bench
```
Benchmarks measured on Apple M4. If you need truly exemplar performance, switch to [awasm-noble](https://github.com/paulmillr/awasm-noble).
```
# 32B
sha256 x 2,016,129 ops/sec @ 496ns/op
sha512 x 740,740 ops/sec @ 1μs/op
sha3_256 x 287,686 ops/sec @ 3μs/op
sha3_512 x 288,267 ops/sec @ 3μs/op
k12 x 476,190 ops/sec @ 2μs/op
blake2b x 410,340 ops/sec @ 2μs/op
blake2s x 942,507 ops/sec @ 1μs/op
blake3 x 1,006,036 ops/sec @ 994ns/op
ripemd160 x 1,410,437 ops/sec @ 709ns/op
md5 x 1,663,893 ops/sec @ 601ns/op
sha1 x 1,589,825 ops/sec @ 629ns/op
# 1MB
sha256 x 331 ops/sec @ 3ms/op
sha512 x 128 ops/sec @ 7ms/op
sha3_256 x 39 ops/sec @ 25ms/op
sha3_512 x 21 ops/sec @ 46ms/op
kt128 x 91 ops/sec @ 10ms/op
kt256 x 75 ops/sec @ 13ms/op
turboshake128 x 93 ops/sec @ 10ms/op
blake256 x 57 ops/sec @ 17ms/op
blake2b x 61 ops/sec @ 16ms/op
blake2s x 78 ops/sec @ 12ms/op
blake3 x 95 ops/sec @ 10ms/op
ripemd160 x 177 ops/sec @ 5ms/op
md5 x 250 ops/sec @ 3ms/op
sha1 x 416 ops/sec @ 2ms/op
# MAC
hmac(sha256) x 599,880 ops/sec @ 1μs/op
hmac(sha512) x 197,122 ops/sec @ 5μs/op
kmac256 x 87,981 ops/sec @ 11μs/op
blake3(key) x 796,812 ops/sec @ 1μs/op
# KDF
hkdf(sha256) x 259,942 ops/sec @ 3μs/op
blake3(context) x 424,808 ops/sec @ 2μs/op
pbkdf2(sha256, c: 2 ** 18) x 5 ops/sec @ 197ms/op
pbkdf2(sha512, c: 2 ** 18) x 1 ops/sec @ 630ms/op
scrypt(n: 2 ** 18, r: 8, p: 1) x 2 ops/sec @ 400ms/op
argon2id(t: 1, m: 256MB) 2881ms
```
The library could be 3x faster by utilizing loop unrolling. It isn't used because
unrolling a) would increase bundle size b) make lib un-readable c) current perf is "fast enough"
for most use-cases.
## License
The MIT License (MIT)
Copyright (c) 2022 Paul Miller [(https://paulmillr.com)](https://paulmillr.com)
See LICENSE file.

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/**
* Internal helpers for blake hash.
* @module
*/
import { type TRet } from './utils.ts';
/**
* Internal blake permutation table.
* Rows `0..9` serve BLAKE2s, rows `0..11` serve BLAKE2b with `10..11 = 0..1`, and Blake1 also
* reuses the later rows shown below. Blake1 expands rounds `10..15` as `SIGMA[i % 10]`, so rows
* `10..15` intentionally repeat rows `0..5` for the 14-round (256) and 16-round (512) variants.
*/
export declare const BSIGMA: TRet<Uint8Array>;
export type Num4 = {
a: number;
b: number;
c: number;
d: number;
};
export declare function G1s(a: number, b: number, c: number, d: number, x: number): Num4;
export declare function G2s(a: number, b: number, c: number, d: number, x: number): Num4;
//# sourceMappingURL=_blake.d.ts.map

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/**
* Internal helpers for blake hash.
* @module
*/
import { rotr } from "./utils.js";
/**
* Internal blake permutation table.
* Rows `0..9` serve BLAKE2s, rows `0..11` serve BLAKE2b with `10..11 = 0..1`, and Blake1 also
* reuses the later rows shown below. Blake1 expands rounds `10..15` as `SIGMA[i % 10]`, so rows
* `10..15` intentionally repeat rows `0..5` for the 14-round (256) and 16-round (512) variants.
*/
// prettier-ignore
export const BSIGMA = /* @__PURE__ */ Uint8Array.from([
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3,
11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4,
7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8,
9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13,
2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9,
12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11,
13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10,
6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5,
10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3,
// Blake1, unused in others
11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4,
7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8,
9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13,
2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9,
]);
// 32-bit / BLAKE2s first half of G, with the fixed `(16, 12)` rotation pair.
// Parameter `x` is the RFC 7693 first-half message word, or Blake1's pre-mixed
// `m[sigma[r][2i]] ^ u[sigma[r][2i+1]]` addend in the 32-bit path.
export function G1s(a, b, c, d, x) {
a = (a + b + x) | 0;
d = rotr(d ^ a, 16);
c = (c + d) | 0;
b = rotr(b ^ c, 12);
return { a, b, c, d };
}
// 32-bit / BLAKE2s second half of G.
// Parameter `x` is the RFC 7693 second-half (`y`) message word, or Blake1's pre-mixed
// `m[sigma[r][2i + 1]] ^ u[sigma[r][2i]]` addend in the 32-bit path.
export function G2s(a, b, c, d, x) {
a = (a + b + x) | 0;
d = rotr(d ^ a, 8);
c = (c + d) | 0;
b = rotr(b ^ c, 7);
return { a, b, c, d };
}
//# sourceMappingURL=_blake.js.map

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/**
* Internal Merkle-Damgard hash utils.
* @module
*/
import { type Hash, type TArg, type TRet } from './utils.ts';
/**
* Shared 32-bit conditional boolean primitive reused by SHA-256, SHA-1, and MD5 `F`.
* Returns bits from `b` when `a` is set, otherwise from `c`.
* The XOR form is equivalent to MD5's `F(X,Y,Z) = XY v not(X)Z` because the masked terms never
* set the same bit.
* @param a - selector word
* @param b - word chosen when selector bit is set
* @param c - word chosen when selector bit is clear
* @returns Mixed 32-bit word.
* @example
* Combine three words with the shared 32-bit choice primitive.
* ```ts
* Chi(0xffffffff, 0x12345678, 0x87654321);
* ```
*/
export declare function Chi(a: number, b: number, c: number): number;
/**
* Shared 32-bit majority primitive reused by SHA-256 and SHA-1.
* Returns bits shared by at least two inputs.
* @param a - first input word
* @param b - second input word
* @param c - third input word
* @returns Mixed 32-bit word.
* @example
* Combine three words with the shared 32-bit majority primitive.
* ```ts
* Maj(0xffffffff, 0x12345678, 0x87654321);
* ```
*/
export declare function Maj(a: number, b: number, c: number): number;
/**
* Merkle-Damgard hash construction base class.
* Could be used to create MD5, RIPEMD, SHA1, SHA2.
* Accepts only byte-aligned `Uint8Array` input, even when the underlying spec describes bit
* strings with partial-byte tails.
* @param blockLen - internal block size in bytes
* @param outputLen - digest size in bytes
* @param padOffset - trailing length field size in bytes
* @param isLE - whether length and state words are encoded in little-endian
* @example
* Use a concrete subclass to get the shared Merkle-Damgard update/digest flow.
* ```ts
* import { _SHA1 } from '@noble/hashes/legacy.js';
* const hash = new _SHA1();
* hash.update(new Uint8Array([97, 98, 99]));
* hash.digest();
* ```
*/
export declare abstract class HashMD<T extends HashMD<T>> implements Hash<T> {
protected abstract process(buf: DataView, offset: number): void;
protected abstract get(): number[];
protected abstract set(...args: number[]): void;
abstract destroy(): void;
protected abstract roundClean(): void;
readonly blockLen: number;
readonly outputLen: number;
readonly canXOF = false;
readonly padOffset: number;
readonly isLE: boolean;
protected buffer: Uint8Array;
protected view: DataView;
protected finished: boolean;
protected length: number;
protected pos: number;
protected destroyed: boolean;
constructor(blockLen: number, outputLen: number, padOffset: number, isLE: boolean);
update(data: TArg<Uint8Array>): this;
digestInto(out: TArg<Uint8Array>): void;
digest(): TRet<Uint8Array>;
_cloneInto(to?: T): T;
clone(): T;
}
/**
* Initial SHA-2 state: fractional parts of square roots of first 16 primes 2..53.
* Check out `test/misc/sha2-gen-iv.js` for recomputation guide.
*/
/** Initial SHA256 state from RFC 6234 §6.1: the first 32 bits of the fractional parts of the
* square roots of the first eight prime numbers. Exported as a shared table; callers must treat
* it as read-only because constructors copy words from it by index. */
export declare const SHA256_IV: TRet<Uint32Array>;
/** Initial SHA224 state `H(0)` from RFC 6234 §6.1. Exported as a shared table; callers must
* treat it as read-only because constructors copy words from it by index. */
export declare const SHA224_IV: TRet<Uint32Array>;
/** Initial SHA384 state from RFC 6234 §6.3: eight RFC 64-bit `H(0)` words stored as sixteen
* big-endian 32-bit halves. Derived from the fractional parts of the square roots of the ninth
* through sixteenth prime numbers. Exported as a shared table; callers must treat it as read-only
* because constructors copy halves from it by index. */
export declare const SHA384_IV: TRet<Uint32Array>;
/** Initial SHA512 state from RFC 6234 §6.3: eight RFC 64-bit `H(0)` words stored as sixteen
* big-endian 32-bit halves. Derived from the fractional parts of the square roots of the first
* eight prime numbers. Exported as a shared table; callers must treat it as read-only because
* constructors copy halves from it by index. */
export declare const SHA512_IV: TRet<Uint32Array>;
//# sourceMappingURL=_md.d.ts.map

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/**
* Internal Merkle-Damgard hash utils.
* @module
*/
import { abytes, aexists, aoutput, clean, createView, } from "./utils.js";
/**
* Shared 32-bit conditional boolean primitive reused by SHA-256, SHA-1, and MD5 `F`.
* Returns bits from `b` when `a` is set, otherwise from `c`.
* The XOR form is equivalent to MD5's `F(X,Y,Z) = XY v not(X)Z` because the masked terms never
* set the same bit.
* @param a - selector word
* @param b - word chosen when selector bit is set
* @param c - word chosen when selector bit is clear
* @returns Mixed 32-bit word.
* @example
* Combine three words with the shared 32-bit choice primitive.
* ```ts
* Chi(0xffffffff, 0x12345678, 0x87654321);
* ```
*/
export function Chi(a, b, c) {
return (a & b) ^ (~a & c);
}
/**
* Shared 32-bit majority primitive reused by SHA-256 and SHA-1.
* Returns bits shared by at least two inputs.
* @param a - first input word
* @param b - second input word
* @param c - third input word
* @returns Mixed 32-bit word.
* @example
* Combine three words with the shared 32-bit majority primitive.
* ```ts
* Maj(0xffffffff, 0x12345678, 0x87654321);
* ```
*/
export function Maj(a, b, c) {
return (a & b) ^ (a & c) ^ (b & c);
}
/**
* Merkle-Damgard hash construction base class.
* Could be used to create MD5, RIPEMD, SHA1, SHA2.
* Accepts only byte-aligned `Uint8Array` input, even when the underlying spec describes bit
* strings with partial-byte tails.
* @param blockLen - internal block size in bytes
* @param outputLen - digest size in bytes
* @param padOffset - trailing length field size in bytes
* @param isLE - whether length and state words are encoded in little-endian
* @example
* Use a concrete subclass to get the shared Merkle-Damgard update/digest flow.
* ```ts
* import { _SHA1 } from '@noble/hashes/legacy.js';
* const hash = new _SHA1();
* hash.update(new Uint8Array([97, 98, 99]));
* hash.digest();
* ```
*/
export class HashMD {
blockLen;
outputLen;
canXOF = false;
padOffset;
isLE;
// For partial updates less than block size
buffer;
view;
finished = false;
length = 0;
pos = 0;
destroyed = false;
constructor(blockLen, outputLen, padOffset, isLE) {
this.blockLen = blockLen;
this.outputLen = outputLen;
this.padOffset = padOffset;
this.isLE = isLE;
this.buffer = new Uint8Array(blockLen);
this.view = createView(this.buffer);
}
update(data) {
aexists(this);
abytes(data);
const { view, buffer, blockLen } = this;
const len = data.length;
for (let pos = 0; pos < len;) {
const take = Math.min(blockLen - this.pos, len - pos);
// Fast path only when there is no buffered partial block: `take === blockLen` implies
// `this.pos === 0`, so we can process full blocks directly from the input view.
if (take === blockLen) {
const dataView = createView(data);
for (; blockLen <= len - pos; pos += blockLen)
this.process(dataView, pos);
continue;
}
buffer.set(data.subarray(pos, pos + take), this.pos);
this.pos += take;
pos += take;
if (this.pos === blockLen) {
this.process(view, 0);
this.pos = 0;
}
}
this.length += data.length;
this.roundClean();
return this;
}
digestInto(out) {
aexists(this);
aoutput(out, this);
this.finished = true;
// Padding
// We can avoid allocation of buffer for padding completely if it
// was previously not allocated here. But it won't change performance.
const { buffer, view, blockLen, isLE } = this;
let { pos } = this;
// append the bit '1' to the message
buffer[pos++] = 0b10000000;
clean(this.buffer.subarray(pos));
// we have less than padOffset left in buffer, so we cannot put length in
// current block, need process it and pad again
if (this.padOffset > blockLen - pos) {
this.process(view, 0);
pos = 0;
}
// Pad until full block byte with zeros
for (let i = pos; i < blockLen; i++)
buffer[i] = 0;
// `padOffset` reserves the whole length field. For SHA-384/512 the high 64 bits stay zero from
// the padding fill above, and JS will overflow before user input can make that half non-zero.
// So we only need to write the low 64 bits here.
view.setBigUint64(blockLen - 8, BigInt(this.length * 8), isLE);
this.process(view, 0);
const oview = createView(out);
const len = this.outputLen;
// NOTE: we do division by 4 later, which must be fused in single op with modulo by JIT
if (len % 4)
throw new Error('_sha2: outputLen must be aligned to 32bit');
const outLen = len / 4;
const state = this.get();
if (outLen > state.length)
throw new Error('_sha2: outputLen bigger than state');
for (let i = 0; i < outLen; i++)
oview.setUint32(4 * i, state[i], isLE);
}
digest() {
const { buffer, outputLen } = this;
this.digestInto(buffer);
// Copy before destroy(): subclasses wipe `buffer` during cleanup, but `digest()` must return
// fresh bytes to the caller.
const res = buffer.slice(0, outputLen);
this.destroy();
return res;
}
_cloneInto(to) {
to ||= new this.constructor();
to.set(...this.get());
const { blockLen, buffer, length, finished, destroyed, pos } = this;
to.destroyed = destroyed;
to.finished = finished;
to.length = length;
to.pos = pos;
// Only partial-block bytes need copying: when `length % blockLen === 0`, `pos === 0` and
// later `update()` / `digestInto()` overwrite `to.buffer` from the start before reading it.
if (length % blockLen)
to.buffer.set(buffer);
return to;
}
clone() {
return this._cloneInto();
}
}
/**
* Initial SHA-2 state: fractional parts of square roots of first 16 primes 2..53.
* Check out `test/misc/sha2-gen-iv.js` for recomputation guide.
*/
/** Initial SHA256 state from RFC 6234 §6.1: the first 32 bits of the fractional parts of the
* square roots of the first eight prime numbers. Exported as a shared table; callers must treat
* it as read-only because constructors copy words from it by index. */
export const SHA256_IV = /* @__PURE__ */ Uint32Array.from([
0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19,
]);
/** Initial SHA224 state `H(0)` from RFC 6234 §6.1. Exported as a shared table; callers must
* treat it as read-only because constructors copy words from it by index. */
export const SHA224_IV = /* @__PURE__ */ Uint32Array.from([
0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939, 0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4,
]);
/** Initial SHA384 state from RFC 6234 §6.3: eight RFC 64-bit `H(0)` words stored as sixteen
* big-endian 32-bit halves. Derived from the fractional parts of the square roots of the ninth
* through sixteenth prime numbers. Exported as a shared table; callers must treat it as read-only
* because constructors copy halves from it by index. */
export const SHA384_IV = /* @__PURE__ */ Uint32Array.from([
0xcbbb9d5d, 0xc1059ed8, 0x629a292a, 0x367cd507, 0x9159015a, 0x3070dd17, 0x152fecd8, 0xf70e5939,
0x67332667, 0xffc00b31, 0x8eb44a87, 0x68581511, 0xdb0c2e0d, 0x64f98fa7, 0x47b5481d, 0xbefa4fa4,
]);
/** Initial SHA512 state from RFC 6234 §6.3: eight RFC 64-bit `H(0)` words stored as sixteen
* big-endian 32-bit halves. Derived from the fractional parts of the square roots of the first
* eight prime numbers. Exported as a shared table; callers must treat it as read-only because
* constructors copy halves from it by index. */
export const SHA512_IV = /* @__PURE__ */ Uint32Array.from([
0x6a09e667, 0xf3bcc908, 0xbb67ae85, 0x84caa73b, 0x3c6ef372, 0xfe94f82b, 0xa54ff53a, 0x5f1d36f1,
0x510e527f, 0xade682d1, 0x9b05688c, 0x2b3e6c1f, 0x1f83d9ab, 0xfb41bd6b, 0x5be0cd19, 0x137e2179,
]);
//# sourceMappingURL=_md.js.map

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/**
* Internal helpers for u64.
* BigUint64Array is too slow as per 2026, so we implement it using
* Uint32Array.
* @privateRemarks TODO: re-check {@link https://issues.chromium.org/issues/42212588}
* @module
*/
import type { TRet } from './utils.ts';
declare function fromBig(n: bigint, le?: boolean): {
h: number;
l: number;
};
declare function split(lst: bigint[], le?: boolean): TRet<Uint32Array[]>;
declare const toBig: (h: number, l: number) => bigint;
declare const shrSH: (h: number, _l: number, s: number) => number;
declare const shrSL: (h: number, l: number, s: number) => number;
declare const rotrSH: (h: number, l: number, s: number) => number;
declare const rotrSL: (h: number, l: number, s: number) => number;
declare const rotrBH: (h: number, l: number, s: number) => number;
declare const rotrBL: (h: number, l: number, s: number) => number;
declare const rotr32H: (_h: number, l: number) => number;
declare const rotr32L: (h: number, _l: number) => number;
declare const rotlSH: (h: number, l: number, s: number) => number;
declare const rotlSL: (h: number, l: number, s: number) => number;
declare const rotlBH: (h: number, l: number, s: number) => number;
declare const rotlBL: (h: number, l: number, s: number) => number;
declare function add(Ah: number, Al: number, Bh: number, Bl: number): {
h: number;
l: number;
};
declare const add3L: (Al: number, Bl: number, Cl: number) => number;
declare const add3H: (low: number, Ah: number, Bh: number, Ch: number) => number;
declare const add4L: (Al: number, Bl: number, Cl: number, Dl: number) => number;
declare const add4H: (low: number, Ah: number, Bh: number, Ch: number, Dh: number) => number;
declare const add5L: (Al: number, Bl: number, Cl: number, Dl: number, El: number) => number;
declare const add5H: (low: number, Ah: number, Bh: number, Ch: number, Dh: number, Eh: number) => number;
export { add, add3H, add3L, add4H, add4L, add5H, add5L, fromBig, rotlBH, rotlBL, rotlSH, rotlSL, rotr32H, rotr32L, rotrBH, rotrBL, rotrSH, rotrSL, shrSH, shrSL, split, toBig };
declare const u64: {
fromBig: typeof fromBig;
split: typeof split;
toBig: (h: number, l: number) => bigint;
shrSH: (h: number, _l: number, s: number) => number;
shrSL: (h: number, l: number, s: number) => number;
rotrSH: (h: number, l: number, s: number) => number;
rotrSL: (h: number, l: number, s: number) => number;
rotrBH: (h: number, l: number, s: number) => number;
rotrBL: (h: number, l: number, s: number) => number;
rotr32H: (_h: number, l: number) => number;
rotr32L: (h: number, _l: number) => number;
rotlSH: (h: number, l: number, s: number) => number;
rotlSL: (h: number, l: number, s: number) => number;
rotlBH: (h: number, l: number, s: number) => number;
rotlBL: (h: number, l: number, s: number) => number;
add: typeof add;
add3L: (Al: number, Bl: number, Cl: number) => number;
add3H: (low: number, Ah: number, Bh: number, Ch: number) => number;
add4L: (Al: number, Bl: number, Cl: number, Dl: number) => number;
add4H: (low: number, Ah: number, Bh: number, Ch: number, Dh: number) => number;
add5H: (low: number, Ah: number, Bh: number, Ch: number, Dh: number, Eh: number) => number;
add5L: (Al: number, Bl: number, Cl: number, Dl: number, El: number) => number;
};
export default u64;
//# sourceMappingURL=_u64.d.ts.map

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const U32_MASK64 = /* @__PURE__ */ BigInt(2 ** 32 - 1);
const _32n = /* @__PURE__ */ BigInt(32);
// Split bigint into two 32-bit halves. With `le=true`, returned fields become `{ h: low, l: high
// }` to match little-endian word order rather than the property names.
function fromBig(n, le = false) {
if (le)
return { h: Number(n & U32_MASK64), l: Number((n >> _32n) & U32_MASK64) };
return { h: Number((n >> _32n) & U32_MASK64) | 0, l: Number(n & U32_MASK64) | 0 };
}
// Split bigint list into `[highWords, lowWords]` when `le=false`; with `le=true`, the first array
// holds the low halves because `fromBig(...)` swaps the semantic meaning of `h` and `l`.
function split(lst, le = false) {
const len = lst.length;
let Ah = new Uint32Array(len);
let Al = new Uint32Array(len);
for (let i = 0; i < len; i++) {
const { h, l } = fromBig(lst[i], le);
[Ah[i], Al[i]] = [h, l];
}
return [Ah, Al];
}
// Combine explicit `(high, low)` 32-bit halves into a bigint; `>>> 0` normalizes signed JS
// bitwise results back to uint32 first, and little-endian callers must swap.
const toBig = (h, l) => (BigInt(h >>> 0) << _32n) | BigInt(l >>> 0);
// High 32-bit half of a 64-bit logical right shift for `s` in `0..31`.
const shrSH = (h, _l, s) => h >>> s;
// Low 32-bit half of a 64-bit logical right shift, valid for `s` in `1..31`.
const shrSL = (h, l, s) => (h << (32 - s)) | (l >>> s);
// High 32-bit half of a 64-bit right rotate, valid for `s` in `1..31`.
const rotrSH = (h, l, s) => (h >>> s) | (l << (32 - s));
// Low 32-bit half of a 64-bit right rotate, valid for `s` in `1..31`.
const rotrSL = (h, l, s) => (h << (32 - s)) | (l >>> s);
// High 32-bit half of a 64-bit right rotate, valid for `s` in `33..63`; `32` uses `rotr32*`.
const rotrBH = (h, l, s) => (h << (64 - s)) | (l >>> (s - 32));
// Low 32-bit half of a 64-bit right rotate, valid for `s` in `33..63`; `32` uses `rotr32*`.
const rotrBL = (h, l, s) => (h >>> (s - 32)) | (l << (64 - s));
// High 32-bit half of a 64-bit right rotate for `s === 32`; this is just the swapped low half.
const rotr32H = (_h, l) => l;
// Low 32-bit half of a 64-bit right rotate for `s === 32`; this is just the swapped high half.
const rotr32L = (h, _l) => h;
// High 32-bit half of a 64-bit left rotate, valid for `s` in `1..31`.
const rotlSH = (h, l, s) => (h << s) | (l >>> (32 - s));
// Low 32-bit half of a 64-bit left rotate, valid for `s` in `1..31`.
const rotlSL = (h, l, s) => (l << s) | (h >>> (32 - s));
// High 32-bit half of a 64-bit left rotate, valid for `s` in `33..63`; `32` uses `rotr32*`.
const rotlBH = (h, l, s) => (l << (s - 32)) | (h >>> (64 - s));
// Low 32-bit half of a 64-bit left rotate, valid for `s` in `33..63`; `32` uses `rotr32*`.
const rotlBL = (h, l, s) => (h << (s - 32)) | (l >>> (64 - s));
// Add two split 64-bit words and return the split `{ h, l }` sum.
// JS uses 32-bit signed integers for bitwise operations, so we cannot simply shift the carry out
// of the low sum and instead use division.
function add(Ah, Al, Bh, Bl) {
const l = (Al >>> 0) + (Bl >>> 0);
return { h: (Ah + Bh + ((l / 2 ** 32) | 0)) | 0, l: l | 0 };
}
// Addition with more than 2 elements
// Unmasked low-word accumulator for 3-way addition; pass the raw result into `add3H(...)`.
const add3L = (Al, Bl, Cl) => (Al >>> 0) + (Bl >>> 0) + (Cl >>> 0);
// High-word finalize step for 3-way addition; `low` must be the untruncated output of `add3L(...)`.
const add3H = (low, Ah, Bh, Ch) => (Ah + Bh + Ch + ((low / 2 ** 32) | 0)) | 0;
// Unmasked low-word accumulator for 4-way addition; pass the raw result into `add4H(...)`.
const add4L = (Al, Bl, Cl, Dl) => (Al >>> 0) + (Bl >>> 0) + (Cl >>> 0) + (Dl >>> 0);
// High-word finalize step for 4-way addition; `low` must be the untruncated output of `add4L(...)`.
const add4H = (low, Ah, Bh, Ch, Dh) => (Ah + Bh + Ch + Dh + ((low / 2 ** 32) | 0)) | 0;
// Unmasked low-word accumulator for 5-way addition; pass the raw result into `add5H(...)`.
const add5L = (Al, Bl, Cl, Dl, El) => (Al >>> 0) + (Bl >>> 0) + (Cl >>> 0) + (Dl >>> 0) + (El >>> 0);
// High-word finalize step for 5-way addition; `low` must be the untruncated output of `add5L(...)`.
const add5H = (low, Ah, Bh, Ch, Dh, Eh) => (Ah + Bh + Ch + Dh + Eh + ((low / 2 ** 32) | 0)) | 0;
// prettier-ignore
export { add, add3H, add3L, add4H, add4L, add5H, add5L, fromBig, rotlBH, rotlBL, rotlSH, rotlSL, rotr32H, rotr32L, rotrBH, rotrBL, rotrSH, rotrSL, shrSH, shrSL, split, toBig };
// Canonical grouped namespace for callers that prefer one object.
// Named exports stay for direct imports.
// prettier-ignore
const u64 = {
fromBig, split, toBig,
shrSH, shrSL,
rotrSH, rotrSL, rotrBH, rotrBL,
rotr32H, rotr32L,
rotlSH, rotlSL, rotlBH, rotlBL,
add, add3L, add3H, add4L, add4H, add5H, add5L,
};
// Default export mirrors named `u64` for compatibility with object-style imports.
export default u64;
//# sourceMappingURL=_u64.js.map

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import { type KDFInput, type TArg, type TRet } from './utils.ts';
/** Argon2 cost, output, and optional secret/personalization inputs. */
export type ArgonOpts = {
/** Time cost measured in iterations. */
t: number;
/** Memory cost in kibibytes. */
m: number;
/** Parallelization parameter. */
p: number;
/** Argon2 version number. Defaults to `0x13`. */
version?: number;
/** Optional secret key mixed into initialization. */
key?: KDFInput;
/** Optional personalization string or bytes. */
personalization?: KDFInput;
/** Desired output length in bytes. RFC 9106 §3.1 requires `T` in the 4..(2^32 - 1) range. */
dkLen?: number;
/** Max scheduler block time in milliseconds for the async variants. */
asyncTick?: number;
/** Maximum temporary memory budget in bytes. */
maxmem?: number;
/**
* Optional progress callback invoked during long-running derivations.
* param progress - completion fraction in the `0..1` range
*/
onProgress?: (progress: number) => void;
};
/**
* Argon2d GPU-resistant version.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2d.
* ```ts
* argon2d('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export declare const argon2d: (password: TArg<KDFInput>, salt: TArg<KDFInput>, opts: TArg<ArgonOpts>) => TRet<Uint8Array>;
/**
* Argon2i side-channel-resistant version.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2i.
* ```ts
* argon2i('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export declare const argon2i: (password: TArg<KDFInput>, salt: TArg<KDFInput>, opts: TArg<ArgonOpts>) => TRet<Uint8Array>;
/**
* Argon2id, combining i+d, the most popular version from RFC 9106.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2id.
* ```ts
* argon2id('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export declare const argon2id: (password: TArg<KDFInput>, salt: TArg<KDFInput>, opts: TArg<ArgonOpts>) => TRet<Uint8Array>;
/**
* Argon2d async GPU-resistant version.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Promise resolving to derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2d asynchronously.
* ```ts
* await argon2dAsync('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export declare const argon2dAsync: (password: TArg<KDFInput>, salt: TArg<KDFInput>, opts: TArg<ArgonOpts>) => Promise<TRet<Uint8Array>>;
/**
* Argon2i async side-channel-resistant version.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Promise resolving to derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2i asynchronously.
* ```ts
* await argon2iAsync('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export declare const argon2iAsync: (password: TArg<KDFInput>, salt: TArg<KDFInput>, opts: TArg<ArgonOpts>) => Promise<TRet<Uint8Array>>;
/**
* Argon2id async, combining i+d, the most popular version from RFC 9106.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Promise resolving to derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2id asynchronously.
* ```ts
* await argon2idAsync('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export declare const argon2idAsync: (password: TArg<KDFInput>, salt: TArg<KDFInput>, opts: TArg<ArgonOpts>) => Promise<TRet<Uint8Array>>;
//# sourceMappingURL=argon2.d.ts.map

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/**
* Argon2 KDF from RFC 9106. Can be used to create a key from password and salt.
* We suggest to use Scrypt. JS Argon is 2-10x slower than native code because of 64-bitness:
* * argon uses uint64, but JS doesn't have fast uint64array
* * uint64 multiplication is 1/3 of time
* * `P` function would be very nice with u64, because most of value will be in registers,
* hovewer with u32 it will require 32 registers, which is too much.
* * JS arrays do slow bound checks, so reading from `A2_BUF` slows it down
* @module
*/
import { add3H, add3L, rotr32H, rotr32L, rotrBH, rotrBL, rotrSH, rotrSL } from "./_u64.js";
import { blake2b } from "./blake2.js";
import { anumber, clean, kdfInputToBytes, nextTick, swap32IfBE, swap8IfBE, u32, u8, } from "./utils.js";
// RFC 9106 §3.1 type `y`: 0 = Argon2d, 1 = Argon2i, 2 = Argon2id. The numeric values are the
// spec-bound part here; the object keys are internal labels.
const AT = { Argond2d: 0, Argon2i: 1, Argon2id: 2 };
// RFC 9106 sync points constant `SL = 4`, fixed by the design rather than exposed as a tuning knob.
const ARGON2_SYNC_POINTS = 4;
// Preserve Argon2's `LE32(len(X)) || X` encoding for omitted
// optional fields by emitting empty bytes.
const abytesOrZero = (buf, errorTitle = '') => {
if (buf === undefined)
return Uint8Array.of();
return kdfInputToBytes(buf, errorTitle);
};
// Unsigned `u32 * u32 = { h, l }`, returned as split 64-bit halves.
function mul(a, b) {
// Split into 16-bit limbs so each partial product stays exact under `Math.imul`.
const aL = a & 0xffff;
const aH = a >>> 16;
const bL = b & 0xffff;
const bH = b >>> 16;
const ll = Math.imul(aL, bL);
const hl = Math.imul(aH, bL);
const lh = Math.imul(aL, bH);
const hh = Math.imul(aH, bH);
const carry = (ll >>> 16) + (hl & 0xffff) + lh;
const high = (hh + (hl >>> 16) + (carry >>> 16)) | 0;
const low = (carry << 16) | (ll & 0xffff);
return { h: high, l: low };
}
function mul2(a, b) {
// Double the split 64-bit product; carry from `l` is folded back into `h` via `l >>> 31`.
const { h, l } = mul(a, b);
return { h: ((h << 1) | (l >>> 31)) & 0xffff_ffff, l: (l << 1) & 0xffff_ffff };
}
// BlaMka permutation for Argon2
// `A + B + 2 * trunc(A) * trunc(B)`, where `trunc(...)` means the low 32-bit halves.
function blamka(Ah, Al, Bh, Bl) {
const { h: Ch, l: Cl } = mul2(Al, Bl);
// A + B + (2 * A * B)
const Rll = add3L(Al, Bl, Cl);
return { h: add3H(Rll, Ah, Bh, Ch), l: Rll | 0 };
}
// Temporary block buffer.
// 1024-byte block: 256 u32 = 128 interleaved low/high halves = RFC's
// 8x8 matrix of 16-byte registers.
const A2_BUF = new Uint32Array(256);
// Quarter-round over 64-bit word indices into `A2_BUF`; each index maps to adjacent low/high u32s.
function G(a, b, c, d) {
let Al = A2_BUF[2 * a], Ah = A2_BUF[2 * a + 1]; // prettier-ignore
let Bl = A2_BUF[2 * b], Bh = A2_BUF[2 * b + 1]; // prettier-ignore
let Cl = A2_BUF[2 * c], Ch = A2_BUF[2 * c + 1]; // prettier-ignore
let Dl = A2_BUF[2 * d], Dh = A2_BUF[2 * d + 1]; // prettier-ignore
// RFC 9106 Figure 19 GB rotates by 32, 24, 16, and 63 bits after each XOR step.
({ h: Ah, l: Al } = blamka(Ah, Al, Bh, Bl));
({ Dh, Dl } = { Dh: Dh ^ Ah, Dl: Dl ^ Al });
({ Dh, Dl } = { Dh: rotr32H(Dh, Dl), Dl: rotr32L(Dh, Dl) });
({ h: Ch, l: Cl } = blamka(Ch, Cl, Dh, Dl));
({ Bh, Bl } = { Bh: Bh ^ Ch, Bl: Bl ^ Cl });
({ Bh, Bl } = { Bh: rotrSH(Bh, Bl, 24), Bl: rotrSL(Bh, Bl, 24) });
({ h: Ah, l: Al } = blamka(Ah, Al, Bh, Bl));
({ Dh, Dl } = { Dh: Dh ^ Ah, Dl: Dl ^ Al });
({ Dh, Dl } = { Dh: rotrSH(Dh, Dl, 16), Dl: rotrSL(Dh, Dl, 16) });
({ h: Ch, l: Cl } = blamka(Ch, Cl, Dh, Dl));
({ Bh, Bl } = { Bh: Bh ^ Ch, Bl: Bl ^ Cl });
({ Bh, Bl } = { Bh: rotrBH(Bh, Bl, 63), Bl: rotrBL(Bh, Bl, 63) });
((A2_BUF[2 * a] = Al), (A2_BUF[2 * a + 1] = Ah));
((A2_BUF[2 * b] = Bl), (A2_BUF[2 * b + 1] = Bh));
((A2_BUF[2 * c] = Cl), (A2_BUF[2 * c + 1] = Ch));
((A2_BUF[2 * d] = Dl), (A2_BUF[2 * d + 1] = Dh));
}
// Argon2 permutation over 16 register indices into `A2_BUF`, not the register values themselves.
// RFC 9106 Figure 17: these arguments are the 16 `v0..v15` 64-bit word
// indices inside eight 16-byte inputs, not copied word values.
// prettier-ignore
function P(v00, v01, v02, v03, v04, v05, v06, v07, v08, v09, v10, v11, v12, v13, v14, v15) {
// RFC 9106 Figure 18: first apply GB across rows, then across columns of the 8x8 register matrix.
G(v00, v04, v08, v12);
G(v01, v05, v09, v13);
G(v02, v06, v10, v14);
G(v03, v07, v11, v15);
G(v00, v05, v10, v15);
G(v01, v06, v11, v12);
G(v02, v07, v08, v13);
G(v03, v04, v09, v14);
}
function block(x, xPos, yPos, outPos, needXor) {
for (let i = 0; i < 256; i++)
A2_BUF[i] = x[xPos + i] ^ x[yPos + i];
// rows (8 consecutive 16-register groups)
for (let i = 0; i < 128; i += 16) {
// prettier-ignore
P(i, i + 1, i + 2, i + 3, i + 4, i + 5, i + 6, i + 7, i + 8, i + 9, i + 10, i + 11, i + 12, i + 13, i + 14, i + 15);
}
// columns (8 strided 16-register groups)
for (let i = 0; i < 16; i += 2) {
// prettier-ignore
P(i, i + 1, i + 16, i + 17, i + 32, i + 33, i + 48, i + 49, i + 64, i + 65, i + 80, i + 81, i + 96, i + 97, i + 112, i + 113);
}
// RFC 9106 step 6: passes after the first XOR the old destination block into the new G(X, Y).
if (needXor)
for (let i = 0; i < 256; i++)
x[outPos + i] ^= A2_BUF[i] ^ x[xPos + i] ^ x[yPos + i];
else
for (let i = 0; i < 256; i++)
x[outPos + i] = A2_BUF[i] ^ x[xPos + i] ^ x[yPos + i];
clean(A2_BUF);
}
// Variable-Length Hash Function H'
// Returns bytes, not words; 1024-byte block callers explicitly reinterpret with `u32(...)`.
function Hp(A, dkLen) {
const A8 = u8(A);
const T = new Uint32Array(1);
const T8 = u8(T);
// Argon2 H' prefixes dkLen as LE32; native Uint32Array writes would serialize as BE on s390x.
T[0] = swap8IfBE(dkLen);
// Fast path
if (dkLen <= 64)
return blake2b.create({ dkLen }).update(T8).update(A8).digest();
const out = new Uint8Array(dkLen);
let V = blake2b.create({}).update(T8).update(A8).digest();
let pos = 0;
// RFC 9106 Figure 8: each intermediate `V_i` contributes only `W_i`, its first 32 bytes; only
// `V_{r+1}` is emitted in full at the remaining length.
out.set(V.subarray(0, 32));
pos += 32;
// Rest blocks
for (; dkLen - pos > 64; pos += 32) {
const Vh = blake2b.create({}).update(V);
Vh.digestInto(V);
Vh.destroy();
out.set(V.subarray(0, 32), pos);
}
// Last block
out.set(blake2b(V, { dkLen: dkLen - pos }), pos);
clean(V, T);
// H' is byte-oriented; returning `u32(out)` would silently drop dkLen % 4 tail bytes.
return out;
}
// Used only inside process block!
function indexAlpha(r, s, laneLen, segmentLen, index, randL, sameLane = false) {
// RFC 9106 §3.4.2 Figures 12-13: map `J1` / `J2` into the current lane's reference area `W`.
let area;
if (r === 0) {
if (s === 0)
area = index - 1;
else if (sameLane)
area = s * segmentLen + index - 1;
else
area = s * segmentLen + (index == 0 ? -1 : 0);
}
else if (sameLane)
area = laneLen - segmentLen + index - 1;
else
area = laneLen - segmentLen + (index == 0 ? -1 : 0);
const startPos = r !== 0 && s !== ARGON2_SYNC_POINTS - 1 ? (s + 1) * segmentLen : 0;
// RFC 9106 Figure 13: `mul(randL, randL).h` is `floor(J_1^2 / 2^32)`, and the outer high-half
// multiply computes `floor(|W| * x / 2^32)` without floating-point math.
const rel = area - 1 - mul(area, mul(randL, randL).h).h;
return (startPos + rel) % laneLen;
}
// Exclusive `2^32` sentinel used by `isU32(...)`, not the inclusive maximum u32 value.
const maxUint32 = Math.pow(2, 32);
// Validate safe JS integers in `[0, 2^32 - 1]`.
function isU32(num) {
return Number.isSafeInteger(num) && num >= 0 && num < maxUint32;
}
function argon2Opts(opts) {
const merged = {
version: 0x13,
dkLen: 32,
maxmem: maxUint32 - 1,
asyncTick: 10,
};
// Unknown keys are copied through unchanged here and later ignored unless
// destructuring consumes them.
for (let [k, v] of Object.entries(opts))
if (v !== undefined)
merged[k] = v;
const { dkLen, p, m, t, version, onProgress, asyncTick } = merged;
// RFC 9106 §3.1: tag length `T` MUST be an integer number of bytes from 4 to 2^32-1.
if (!isU32(dkLen) || dkLen < 4)
throw new Error('"dkLen" must be 4..');
if (!isU32(p) || p < 1 || p >= Math.pow(2, 24))
throw new Error('"p" must be 1..2^24');
if (!isU32(m))
throw new Error('"m" must be 0..2^32');
if (!isU32(t) || t < 1)
throw new Error('"t" (iterations) must be 1..2^32');
if (onProgress !== undefined && typeof onProgress !== 'function')
throw new Error('"progressCb" must be a function');
anumber(asyncTick, 'asyncTick');
/*
Memory size m MUST be an integer number of kibibytes from 8*p
to 2^(32)-1. The actual number of blocks is m', which is m
rounded down to the nearest multiple of 4*p.
*/
if (!isU32(m) || m < 8 * p)
throw new Error('"m" (memory) must be at least 8*p bytes');
// Accept legacy `0x10` for compatibility even though RFC 9106 profiles standardize `0x13`.
if (version !== 0x10 && version !== 0x13)
throw new Error('"version" must be 0x10 or 0x13, got ' + version);
return merged;
}
function argon2Init(password, salt, type, opts) {
password = kdfInputToBytes(password, 'password');
salt = kdfInputToBytes(salt, 'salt');
if (!isU32(password.length))
throw new Error('"password" must be less of length 1..4Gb');
// RFC 9106 §3.1 only requires S <= 2^32-1 bytes and says 16 bytes is RECOMMENDED for password
// hashing; this library intentionally takes the stricter common >=8-byte salt path.
if (!isU32(salt.length) || salt.length < 8)
throw new Error('"salt" must be of length 8..4Gb');
if (!Object.values(AT).includes(type))
throw new Error('"type" was invalid');
let { p, dkLen, m, t, version, key, personalization, maxmem, onProgress, asyncTick } = argon2Opts(opts);
// Validation
key = abytesOrZero(key, 'key');
personalization = abytesOrZero(personalization, 'personalization');
// H_0 = H^(64)(LE32(p) || LE32(T) || LE32(m) || LE32(t) ||
// LE32(v) || LE32(y) || LE32(length(P)) || P ||
// LE32(length(S)) || S || LE32(length(K)) || K ||
// LE32(length(X)) || X)
const h = blake2b.create();
const BUF = new Uint32Array(1);
const BUF8 = u8(BUF);
for (let item of [p, dkLen, m, t, version, type]) {
// RFC 9106 H0 encodes these scalars as LE32, so normalize the host word before exposing bytes.
BUF[0] = swap8IfBE(item);
h.update(BUF8);
}
for (let i of [password, salt, key, personalization]) {
BUF[0] = swap8IfBE(i.length); // BUF is u32 array, this is valid once normalized to LE bytes
h.update(BUF8).update(i);
}
// Reserve two extra LE32 words after the 64-byte `H_0` so Figures 3-4 can append
// `LE32(0 or 1) || LE32(i)` in place for the lane-starting blocks.
const H0 = new Uint32Array(18);
const H0_8 = u8(H0);
h.digestInto(H0_8);
// 256 u32 = 1024 (BLOCK_SIZE), fills A2_BUF on processing
// Params
const lanes = p;
// m' = 4 * p * floor (m / 4p)
const mP = 4 * p * Math.floor(m / (ARGON2_SYNC_POINTS * p));
//q = m' / p columns
const laneLen = Math.floor(mP / p);
const segmentLen = Math.floor(laneLen / ARGON2_SYNC_POINTS);
// `maxmem` is documented in bytes; compare against the actual 1024-byte block allocation.
const memUsed = mP * 1024;
if (!isU32(maxmem))
throw new Error('"maxmem" expected <2**32, got ' + maxmem);
if (memUsed > maxmem)
throw new Error('"maxmem" limit was hit: memUsed(mP*1024)=' + memUsed + ', maxmem=' + maxmem);
const B = new Uint32Array(memUsed / 4);
// Fill first blocks
for (let l = 0; l < p; l++) {
const i = 256 * laneLen * l;
// B[i][0] = H'^(1024)(H_0 || LE32(0) || LE32(i))
H0[17] = swap8IfBE(l);
H0[16] = swap8IfBE(0);
B.set(swap32IfBE(u32(Hp(H0, 1024))), i);
// B[i][1] = H'^(1024)(H_0 || LE32(1) || LE32(i))
H0[16] = swap8IfBE(1);
B.set(swap32IfBE(u32(Hp(H0, 1024))), i + 256);
}
let perBlock = () => { };
if (onProgress) {
// The first segment of the first pass skips two preinitialized blocks per lane.
const totalBlock = t * ARGON2_SYNC_POINTS * p * segmentLen - 2 * p;
// Invoke callback if progress changes from 10.01 to 10.02
// Allows to draw smooth progress bar on up to 8K screen
const callbackPer = Math.max(Math.floor(totalBlock / 10000), 1);
let blockCnt = 0;
perBlock = () => {
blockCnt++;
if (onProgress && (!(blockCnt % callbackPer) || blockCnt === totalBlock))
onProgress(blockCnt / totalBlock);
};
}
clean(BUF, H0);
return { type, mP, p, t, version, B, laneLen, lanes, segmentLen, dkLen, perBlock, asyncTick };
}
function argon2Output(B, p, laneLen, dkLen) {
const B_final = new Uint32Array(256);
for (let l = 0; l < p; l++)
for (let j = 0; j < 256; j++)
B_final[j] ^= B[256 * (laneLen * l + laneLen - 1) + j];
// RFC 9106 steps 7-8 feed the byte string `C` into `H'^T(C)`, so normalize the xor'ed words
// back to spec byte order before `Hp(...)` reinterprets them as bytes.
const res = Hp(swap32IfBE(B_final), dkLen);
// Wipe both the xor scratch and the full working matrix once final digest bytes exist.
// JS cleanup is still only best-effort, but this local buffer is no longer needed here.
clean(B, B_final);
return res;
}
function processBlock(B, address, l, r, s, index, laneLen, segmentLen, lanes, offset, prev, dataIndependent, needXor) {
if (offset % laneLen)
prev = offset - 1;
let randL, randH;
if (dataIndependent) {
let i128 = index % 128;
// RFC 9106 §3.4.1.2: each 1024-byte address block yields 128 `(J1, J2)` pairs, so regenerate
// it whenever the segment index crosses a multiple of 128.
if (i128 === 0) {
address[256 + 12]++;
block(address, 256, 2 * 256, 0, false);
block(address, 0, 2 * 256, 0, false);
}
randL = address[2 * i128];
randH = address[2 * i128 + 1];
}
else {
const T = 256 * prev;
randL = B[T];
randH = B[T + 1];
}
// Address-block path selects `J1` / `J2`, then maps them to the reference
// lane/block per RFC 9106 §3.4.
const refLane = r === 0 && s === 0 ? l : randH % lanes;
const refPos = indexAlpha(r, s, laneLen, segmentLen, index, randL, refLane == l);
const refBlock = laneLen * refLane + refPos;
// B[i][j] = G(B[i][j-1], B[l][z])
block(B, 256 * prev, 256 * refBlock, offset * 256, needXor);
}
function argon2(type, password, salt, opts) {
const { mP, p, t, version, B, laneLen, lanes, segmentLen, dkLen, perBlock } = argon2Init(password, salt, type, opts);
// Pre-loop setup
// [address, input, zero_block] format so we can pass single U32 to block function
const address = new Uint32Array(3 * 256);
address[256 + 6] = mP;
address[256 + 8] = t;
address[256 + 10] = type;
for (let r = 0; r < t; r++) {
// RFC 9106 step 6 applies the XOR-on-later-passes rule only for version `0x13`; legacy
// `0x10` keeps the older overwrite behavior used by the v16 test vectors.
const needXor = r !== 0 && version === 0x13;
address[256 + 0] = r;
for (let s = 0; s < ARGON2_SYNC_POINTS; s++) {
address[256 + 4] = s;
// RFC 9106 §3.4.1.3: Argon2id uses Argon2i's data-independent `J1` / `J2` generation only
// in pass 0, slices 0 and 1; Argon2i uses it in every segment.
const dataIndependent = type == AT.Argon2i || (type == AT.Argon2id && r === 0 && s < 2);
for (let l = 0; l < p; l++) {
address[256 + 2] = l;
address[256 + 12] = 0;
let startPos = 0;
if (r === 0 && s === 0) {
startPos = 2;
if (dataIndependent) {
address[256 + 12]++;
block(address, 256, 2 * 256, 0, false);
block(address, 0, 2 * 256, 0, false);
}
}
// current block postion
let offset = l * laneLen + s * segmentLen + startPos;
// previous block position
let prev = offset % laneLen ? offset - 1 : offset + laneLen - 1;
for (let index = startPos; index < segmentLen; index++, offset++, prev++) {
perBlock();
processBlock(B, address, l, r, s, index, laneLen, segmentLen, lanes, offset, prev, dataIndependent, needXor);
}
}
}
}
clean(address);
return argon2Output(B, p, laneLen, dkLen);
}
/**
* Argon2d GPU-resistant version.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2d.
* ```ts
* argon2d('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export const argon2d = (password, salt, opts) => argon2(AT.Argond2d, password, salt, opts);
/**
* Argon2i side-channel-resistant version.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2i.
* ```ts
* argon2i('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export const argon2i = (password, salt, opts) => argon2(AT.Argon2i, password, salt, opts);
/**
* Argon2id, combining i+d, the most popular version from RFC 9106.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2id.
* ```ts
* argon2id('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export const argon2id = (password, salt, opts) => argon2(AT.Argon2id, password, salt, opts);
async function argon2Async(type, password, salt, opts) {
const { mP, p, t, version, B, laneLen, lanes, segmentLen, dkLen, perBlock, asyncTick } = argon2Init(password, salt, type, opts);
// Pre-loop setup
// [address, input, zero_block] format so we can pass single U32 to block function
const address = new Uint32Array(3 * 256);
address[256 + 6] = mP;
address[256 + 8] = t;
address[256 + 10] = type;
let ts = Date.now();
for (let r = 0; r < t; r++) {
// RFC 9106 step 6 applies the XOR-on-later-passes rule only for version `0x13`; legacy
// `0x10` keeps the older overwrite behavior used by the v16 test vectors.
const needXor = r !== 0 && version === 0x13;
address[256 + 0] = r;
for (let s = 0; s < ARGON2_SYNC_POINTS; s++) {
address[256 + 4] = s;
// RFC 9106 §3.4.1.3: Argon2id uses Argon2i's data-independent `J1` / `J2` generation only
// in pass 0, slices 0 and 1; Argon2i uses it in every segment.
const dataIndependent = type == AT.Argon2i || (type == AT.Argon2id && r === 0 && s < 2);
for (let l = 0; l < p; l++) {
address[256 + 2] = l;
address[256 + 12] = 0;
let startPos = 0;
if (r === 0 && s === 0) {
startPos = 2;
if (dataIndependent) {
address[256 + 12]++;
block(address, 256, 2 * 256, 0, false);
block(address, 0, 2 * 256, 0, false);
}
}
// current block postion
let offset = l * laneLen + s * segmentLen + startPos;
// previous block position
let prev = offset % laneLen ? offset - 1 : offset + laneLen - 1;
for (let index = startPos; index < segmentLen; index++, offset++, prev++) {
perBlock();
processBlock(B, address, l, r, s, index, laneLen, segmentLen, lanes, offset, prev, dataIndependent, needXor);
// Date.now() is not monotonic. If the clock goes backwards,
// still yield control.
const diff = Date.now() - ts;
if (!(diff >= 0 && diff < asyncTick)) {
await nextTick();
ts += diff;
}
}
}
}
}
clean(address);
return argon2Output(B, p, laneLen, dkLen);
}
/**
* Argon2d async GPU-resistant version.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Promise resolving to derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2d asynchronously.
* ```ts
* await argon2dAsync('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export const argon2dAsync = (password, salt, opts) => argon2Async(AT.Argond2d, password, salt, opts);
/**
* Argon2i async side-channel-resistant version.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Promise resolving to derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2i asynchronously.
* ```ts
* await argon2iAsync('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export const argon2iAsync = (password, salt, opts) => argon2Async(AT.Argon2i, password, salt, opts);
/**
* Argon2id async, combining i+d, the most popular version from RFC 9106.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Promise resolving to derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2id asynchronously.
* ```ts
* await argon2idAsync('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export const argon2idAsync = (password, salt, opts) => argon2Async(AT.Argon2id, password, salt, opts);
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import { type CHash, type Hash, type TArg, type TRet } from './utils.ts';
/** Blake1 options. Basically just `salt`. */
export type BlakeOpts = {
/** Optional salt mixed into initialization. */
salt?: Uint8Array;
};
declare abstract class BLAKE1<T extends BLAKE1<T>> implements Hash<T> {
readonly canXOF = false;
protected finished: boolean;
protected length: number;
protected pos: number;
protected destroyed: boolean;
protected buffer: Uint8Array;
protected view: DataView;
protected salt: Uint32Array;
abstract compress(view: DataView, offset: number, withLength?: boolean): void;
protected abstract get(): number[];
protected abstract set(...args: number[]): void;
readonly blockLen: number;
readonly outputLen: number;
private lengthFlag;
private counterLen;
protected constants: Uint32Array;
constructor(blockLen: number, outputLen: number, lengthFlag: number, counterLen: number, saltLen: number, constants: Uint32Array, opts?: BlakeOpts);
update(data: TArg<Uint8Array>): this;
destroy(): void;
_cloneInto(to?: T): T;
clone(): T;
digestInto(out: TArg<Uint8Array>): void;
digest(): TRet<Uint8Array>;
}
declare class BLAKE1_32B extends BLAKE1<BLAKE1_32B> {
private v0;
private v1;
private v2;
private v3;
private v4;
private v5;
private v6;
private v7;
constructor(outputLen: number, IV: Uint32Array, lengthFlag: number, opts?: BlakeOpts);
protected get(): [number, number, number, number, number, number, number, number];
protected set(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number): void;
destroy(): void;
compress(view: DataView, offset: number, withLength?: boolean): void;
}
declare class BLAKE1_64B extends BLAKE1<BLAKE1_64B> {
private v0l;
private v0h;
private v1l;
private v1h;
private v2l;
private v2h;
private v3l;
private v3h;
private v4l;
private v4h;
private v5l;
private v5h;
private v6l;
private v6h;
private v7l;
private v7h;
constructor(outputLen: number, IV: Uint32Array, lengthFlag: number, opts?: BlakeOpts);
protected get(): [
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number
];
protected set(v0l: number, v0h: number, v1l: number, v1h: number, v2l: number, v2h: number, v3l: number, v3h: number, v4l: number, v4h: number, v5l: number, v5h: number, v6l: number, v6h: number, v7l: number, v7h: number): void;
destroy(): void;
compress(view: DataView, offset: number, withLength?: boolean): void;
}
/** Internal blake1-224 hash class. */
export declare class _BLAKE224 extends BLAKE1_32B {
constructor(opts?: BlakeOpts);
}
/** Internal blake1-256 hash class. */
export declare class _BLAKE256 extends BLAKE1_32B {
constructor(opts?: BlakeOpts);
}
/** Internal blake1-384 hash class. */
export declare class _BLAKE384 extends BLAKE1_64B {
constructor(opts?: BlakeOpts);
}
/** Internal blake1-512 hash class. */
export declare class _BLAKE512 extends BLAKE1_64B {
constructor(opts?: BlakeOpts);
}
/**
* Blake1-224 hash function.
* @param msg - message bytes to hash
* @param opts - Optional Blake1 settings. See {@link BlakeOpts}. If set,
* `opts.salt` must be exactly 16 bytes.
* @returns Digest bytes.
* @example
* Hash a message with Blake1-224.
* ```ts
* blake224(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const blake224: TRet<CHash<_BLAKE224, BlakeOpts>>;
/**
* Blake1-256 hash function.
* @param msg - message bytes to hash
* @param opts - Optional Blake1 settings. See {@link BlakeOpts}. If set,
* `opts.salt` must be exactly 16 bytes.
* @returns Digest bytes.
* @example
* Hash a message with Blake1-256.
* ```ts
* blake256(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const blake256: TRet<CHash<_BLAKE256, BlakeOpts>>;
/**
* Blake1-384 hash function.
* @param msg - message bytes to hash
* @param opts - Optional Blake1 settings. See {@link BlakeOpts}. If set,
* `opts.salt` must be exactly 32 bytes.
* @returns Digest bytes.
* @example
* Hash a message with Blake1-384.
* ```ts
* blake384(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const blake384: TRet<CHash<_BLAKE384, BlakeOpts>>;
/**
* Blake1-512 hash function.
* @param msg - message bytes to hash
* @param opts - Optional Blake1 settings. See {@link BlakeOpts}. If set,
* `opts.salt` must be exactly 32 bytes.
* @returns Digest bytes.
* @example
* Hash a message with Blake1-512.
* ```ts
* blake512(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const blake512: TRet<CHash<_BLAKE512, BlakeOpts>>;
export {};
//# sourceMappingURL=blake1.d.ts.map

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/**
* Blake1 legacy hash function, one of SHA3 proposals.
* Rarely used. Check out blake2 or blake3 instead.
* {@link https://www.aumasson.jp/blake/blake.pdf}
*
* In the best case, there are 0 allocations.
*
* Differences from blake2:
*
* - BE instead of LE
* - Paddings, similar to MD5, RIPEMD, SHA1, SHA2, but:
* - length flag is located before actual length
* - padding block is compressed differently (no lengths)
* Instead of msg[sigma[k]], we have `msg[sigma[k]] ^ constants[sigma[k-1]]`
* (-1 for g1, g2 without -1)
* - Salt is XOR-ed into constants instead of state
* - Salt is XOR-ed with output in `compress`
* - Additional rows (+64 bytes) in SIGMA for new rounds
* - Different round count:
* - 14 / 10 rounds in blake256 / blake2s
* - 16 / 12 rounds in blake512 / blake2b
* - blake512: G1b: rotr 24 -> 25, G2b: rotr 63 -> 11
* @module
*/
import { BSIGMA, G1s, G2s } from "./_blake.js";
import { SHA224_IV, SHA256_IV, SHA384_IV, SHA512_IV } from "./_md.js";
import * as u64 from "./_u64.js";
// prettier-ignore
import { abytes, aexists, aoutput, clean, createHasher, createView } from "./utils.js";
// Shared unsalted sentinel, sized for the 64-bit path and reused by the 32-bit path via prefix.
const EMPTY_SALT = /* @__PURE__ */ new Uint32Array(8);
// Base destroy logic only clears salt-derived state; the partial message buffer and length/position
// bookkeeping remain until the instance or backing buffer is reused.
class BLAKE1 {
canXOF = false;
finished = false;
length = 0;
pos = 0;
destroyed = false;
// For partial updates less than block size
buffer;
view;
salt;
blockLen;
outputLen;
lengthFlag;
counterLen;
constants;
constructor(blockLen, outputLen, lengthFlag, counterLen, saltLen, constants, opts = {}) {
const { salt } = opts;
this.blockLen = blockLen;
this.outputLen = outputLen;
this.lengthFlag = lengthFlag;
this.counterLen = counterLen;
this.buffer = new Uint8Array(blockLen);
this.view = createView(this.buffer);
if (salt !== undefined) {
let slt = salt;
abytes(slt, 4 * saltLen, 'salt');
// if (slt.length !== 4 * saltLen) throw new Error('wrong salt length');
const salt32 = (this.salt = new Uint32Array(saltLen));
const sv = createView(slt);
this.constants = constants.slice();
for (let i = 0, offset = 0; i < salt32.length; i++, offset += 4) {
salt32[i] = sv.getUint32(offset, false);
this.constants[i] ^= salt32[i];
}
}
else {
this.salt = EMPTY_SALT;
this.constants = constants;
}
}
update(data) {
aexists(this);
abytes(data);
// From _md, but update length before each compress
const { view, buffer, blockLen } = this;
const len = data.length;
let dataView;
for (let pos = 0; pos < len;) {
const take = Math.min(blockLen - this.pos, len - pos);
// Fast path only when there is no buffered partial block: `take === blockLen` implies
// `this.pos === 0`, so we can process full blocks directly from the input view.
if (take === blockLen) {
if (!dataView)
dataView = createView(data);
for (; blockLen <= len - pos; pos += blockLen) {
this.length += blockLen;
this.compress(dataView, pos);
}
continue;
}
buffer.set(data.subarray(pos, pos + take), this.pos);
this.pos += take;
pos += take;
if (this.pos === blockLen) {
this.length += blockLen;
this.compress(view, 0, true);
this.pos = 0;
}
}
return this;
}
destroy() {
this.destroyed = true;
if (this.salt !== EMPTY_SALT) {
clean(this.salt, this.constants);
}
}
_cloneInto(to) {
to ||= new this.constructor();
to.set(...this.get());
const { buffer, length, finished, destroyed, constants, salt, pos } = this;
to.buffer.set(buffer);
// Clone salt-derived arrays by value so destroying the clone cannot wipe the source instance.
to.constants = constants.slice();
to.destroyed = destroyed;
to.finished = finished;
to.length = length;
to.pos = pos;
to.salt = salt.slice();
return to;
}
clone() {
return this._cloneInto();
}
digestInto(out) {
aexists(this);
aoutput(out, this);
this.finished = true;
// Padding
const { buffer, blockLen, counterLen, lengthFlag, view } = this;
clean(buffer.subarray(this.pos)); // clean buf
const counter = BigInt((this.length + this.pos) * 8);
const counterPos = blockLen - counterLen - 1;
buffer[this.pos] |= 0b1000_0000; // End block flag
this.length += this.pos; // add unwritten length
// Not enough in buffer for length: write what we have.
if (this.pos > counterPos) {
this.compress(view, 0);
clean(buffer);
this.pos = 0;
}
// Difference with md: here we have lengthFlag!
buffer[counterPos] |= lengthFlag; // Length flag
// We always set 8 byte length flag. Because length will overflow significantly sooner.
view.setBigUint64(blockLen - 8, counter, false);
// Blake1 omits the counter from the extra all-padding block; only the block that still carries
// message bytes mixes in the final bit length.
this.compress(view, 0, this.pos !== 0);
// Write output
clean(buffer);
const v = createView(out);
const state = this.get();
for (let i = 0; i < this.outputLen / 4; ++i)
v.setUint32(i * 4, state[i]);
}
digest() {
const { buffer, outputLen } = this;
this.digestInto(buffer);
// Return a copy so callers do not alias the instance scratch buffer used during finalization.
const res = buffer.slice(0, outputLen);
this.destroy();
return res;
}
}
// Blake1-512 / Blake1-384 constant table `C512`.
// Stored as sixteen 64-bit constants split into `[high32, low32]` halves so
// the Blake1-64 path can reuse one layout for both `v8..v15` initialization
// and the permuted constant lookups.
const B64C = /* @__PURE__ */ Uint32Array.from([
0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c, 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
0x9216d5d9, 0x8979fb1b, 0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96,
0xba7c9045, 0xf12c7f99, 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16, 0x636920d8, 0x71574e69,
]);
// Blake1-256 / Blake1-224 constant table `C256`, derived as the first half of `C512`.
const B32C = /* @__PURE__ */ B64C.slice(0, 16);
// Blake1-256 IV cloned from SHA-256.
const B256_IV = /* @__PURE__ */ SHA256_IV.slice();
// Blake1-224 IV cloned from SHA-224.
const B224_IV = /* @__PURE__ */ SHA224_IV.slice();
// Blake1-384 IV cloned from the SHA-384 high-then-low 32-bit halves.
const B384_IV = /* @__PURE__ */ SHA384_IV.slice();
// Blake1-512 IV cloned from the SHA-512 high-then-low 32-bit halves.
const B512_IV = /* @__PURE__ */ SHA512_IV.slice();
// Precompute the odd/even companion constants used by all 14 Blake1-32 rounds.
// Each pair stores `u[sigma[2i + 1]]` then `u[sigma[2i]]`, matching the `G1s` / `G2s` xor order.
function generateTBL256() {
const TBL = [];
for (let i = 0, j = 0; i < 14; i++, j += 16) {
for (let offset = 1; offset < 16; offset += 2) {
TBL.push(B32C[BSIGMA[j + offset]]);
TBL.push(B32C[BSIGMA[j + offset - 1]]);
}
}
return new Uint32Array(TBL);
}
// Full 14-round companion-constant table for Blake1-32.
const TBL256 = /* @__PURE__ */ generateTBL256();
// Shared synchronous message-word scratch for the 32-bit Blake1 path.
const BLAKE256_W = /* @__PURE__ */ new Uint32Array(16);
class BLAKE1_32B extends BLAKE1 {
v0;
v1;
v2;
v3;
v4;
v5;
v6;
v7;
constructor(outputLen, IV, lengthFlag, opts = {}) {
super(64, outputLen, lengthFlag, 8, 4, B32C, opts);
this.v0 = IV[0] | 0;
this.v1 = IV[1] | 0;
this.v2 = IV[2] | 0;
this.v3 = IV[3] | 0;
this.v4 = IV[4] | 0;
this.v5 = IV[5] | 0;
this.v6 = IV[6] | 0;
this.v7 = IV[7] | 0;
}
get() {
const { v0, v1, v2, v3, v4, v5, v6, v7 } = this;
return [v0, v1, v2, v3, v4, v5, v6, v7];
}
// prettier-ignore
set(v0, v1, v2, v3, v4, v5, v6, v7) {
this.v0 = v0 | 0;
this.v1 = v1 | 0;
this.v2 = v2 | 0;
this.v3 = v3 | 0;
this.v4 = v4 | 0;
this.v5 = v5 | 0;
this.v6 = v6 | 0;
this.v7 = v7 | 0;
}
destroy() {
super.destroy();
this.set(0, 0, 0, 0, 0, 0, 0, 0);
}
compress(view, offset, withLength = true) {
for (let i = 0; i < 16; i++, offset += 4)
BLAKE256_W[i] = view.getUint32(offset, false);
// Cannot reuse blake2s compress: Blake1 mixes each message word with the companion constants
// precomputed in `TBL256`, rather than using the raw schedule words directly.
let v00 = this.v0 | 0;
let v01 = this.v1 | 0;
let v02 = this.v2 | 0;
let v03 = this.v3 | 0;
let v04 = this.v4 | 0;
let v05 = this.v5 | 0;
let v06 = this.v6 | 0;
let v07 = this.v7 | 0;
let v08 = this.constants[0] | 0;
let v09 = this.constants[1] | 0;
let v10 = this.constants[2] | 0;
let v11 = this.constants[3] | 0;
// Blake1-32 injects the 64-bit bit counter as `[t0, t0, t1, t1]` across `v12..v15`; the
// final all-padding block passes `withLength = false`, leaving these lanes as raw constants.
const { h, l } = u64.fromBig(BigInt(withLength ? this.length * 8 : 0));
let v12 = (this.constants[4] ^ l) >>> 0;
let v13 = (this.constants[5] ^ l) >>> 0;
let v14 = (this.constants[6] ^ h) >>> 0;
let v15 = (this.constants[7] ^ h) >>> 0;
// prettier-ignore
for (let i = 0, k = 0, j = 0; i < 14; i++) {
({ a: v00, b: v04, c: v08, d: v12 } = G1s(v00, v04, v08, v12, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v00, b: v04, c: v08, d: v12 } = G2s(v00, v04, v08, v12, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v01, b: v05, c: v09, d: v13 } = G1s(v01, v05, v09, v13, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v01, b: v05, c: v09, d: v13 } = G2s(v01, v05, v09, v13, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v02, b: v06, c: v10, d: v14 } = G1s(v02, v06, v10, v14, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v02, b: v06, c: v10, d: v14 } = G2s(v02, v06, v10, v14, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v03, b: v07, c: v11, d: v15 } = G1s(v03, v07, v11, v15, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v03, b: v07, c: v11, d: v15 } = G2s(v03, v07, v11, v15, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v00, b: v05, c: v10, d: v15 } = G1s(v00, v05, v10, v15, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v00, b: v05, c: v10, d: v15 } = G2s(v00, v05, v10, v15, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v01, b: v06, c: v11, d: v12 } = G1s(v01, v06, v11, v12, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v01, b: v06, c: v11, d: v12 } = G2s(v01, v06, v11, v12, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v02, b: v07, c: v08, d: v13 } = G1s(v02, v07, v08, v13, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v02, b: v07, c: v08, d: v13 } = G2s(v02, v07, v08, v13, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v03, b: v04, c: v09, d: v14 } = G1s(v03, v04, v09, v14, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v03, b: v04, c: v09, d: v14 } = G2s(v03, v04, v09, v14, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
}
this.v0 = (this.v0 ^ v00 ^ v08 ^ this.salt[0]) >>> 0;
this.v1 = (this.v1 ^ v01 ^ v09 ^ this.salt[1]) >>> 0;
this.v2 = (this.v2 ^ v02 ^ v10 ^ this.salt[2]) >>> 0;
this.v3 = (this.v3 ^ v03 ^ v11 ^ this.salt[3]) >>> 0;
this.v4 = (this.v4 ^ v04 ^ v12 ^ this.salt[0]) >>> 0;
this.v5 = (this.v5 ^ v05 ^ v13 ^ this.salt[1]) >>> 0;
this.v6 = (this.v6 ^ v06 ^ v14 ^ this.salt[2]) >>> 0;
this.v7 = (this.v7 ^ v07 ^ v15 ^ this.salt[3]) >>> 0;
clean(BLAKE256_W);
}
}
// Shared Blake1-64 work vector storing 16 working words as adjacent high/low 32-bit halves.
const BBUF = /* @__PURE__ */ new Uint32Array(32);
// Shared synchronous message-word scratch for the 64-bit Blake1 path.
const BLAKE512_W = /* @__PURE__ */ new Uint32Array(32);
// Precompute the high/low companion constants used by all 16 Blake1-64 rounds.
// Each quartet stores `u[sigma[2i + 1]]` high/low halves, then `u[sigma[2i]]` high/low halves.
function generateTBL512() {
const TBL = [];
for (let r = 0, k = 0; r < 16; r++, k += 16) {
for (let offset = 1; offset < 16; offset += 2) {
TBL.push(B64C[BSIGMA[k + offset] * 2 + 0]);
TBL.push(B64C[BSIGMA[k + offset] * 2 + 1]);
TBL.push(B64C[BSIGMA[k + offset - 1] * 2 + 0]);
TBL.push(B64C[BSIGMA[k + offset - 1] * 2 + 1]);
}
}
return new Uint32Array(TBL);
}
// Full 16-round companion-constant table as high/low halves.
const TBL512 = /* @__PURE__ */ generateTBL512();
// Blake1-64 first half-round with rotations `32` and `25`; `k` is the half-call schedule index.
function G1b(a, b, c, d, msg, k) {
const Xpos = 2 * BSIGMA[k];
const Xl = msg[Xpos + 1] ^ TBL512[k * 2 + 1], Xh = msg[Xpos] ^ TBL512[k * 2]; // prettier-ignore
let Al = BBUF[2 * a + 1], Ah = BBUF[2 * a]; // prettier-ignore
let Bl = BBUF[2 * b + 1], Bh = BBUF[2 * b]; // prettier-ignore
let Cl = BBUF[2 * c + 1], Ch = BBUF[2 * c]; // prettier-ignore
let Dl = BBUF[2 * d + 1], Dh = BBUF[2 * d]; // prettier-ignore
// v[a] = (v[a] + v[b] + x) | 0;
let ll = u64.add3L(Al, Bl, Xl);
Ah = u64.add3H(ll, Ah, Bh, Xh) >>> 0;
Al = (ll | 0) >>> 0;
// v[d] = rotr(v[d] ^ v[a], 32)
({ Dh, Dl } = { Dh: Dh ^ Ah, Dl: Dl ^ Al });
({ Dh, Dl } = { Dh: u64.rotr32H(Dh, Dl), Dl: u64.rotr32L(Dh, Dl) });
// v[c] = (v[c] + v[d]) | 0;
({ h: Ch, l: Cl } = u64.add(Ch, Cl, Dh, Dl));
// v[b] = rotr(v[b] ^ v[c], 25)
({ Bh, Bl } = { Bh: Bh ^ Ch, Bl: Bl ^ Cl });
({ Bh, Bl } = { Bh: u64.rotrSH(Bh, Bl, 25), Bl: u64.rotrSL(Bh, Bl, 25) });
((BBUF[2 * a + 1] = Al), (BBUF[2 * a] = Ah));
((BBUF[2 * b + 1] = Bl), (BBUF[2 * b] = Bh));
((BBUF[2 * c + 1] = Cl), (BBUF[2 * c] = Ch));
((BBUF[2 * d + 1] = Dl), (BBUF[2 * d] = Dh));
}
// Blake1-64 second half-round with rotations `16` and `11`; `k` is the half-call schedule index.
function G2b(a, b, c, d, msg, k) {
const Xpos = 2 * BSIGMA[k];
const Xl = msg[Xpos + 1] ^ TBL512[k * 2 + 1], Xh = msg[Xpos] ^ TBL512[k * 2]; // prettier-ignore
let Al = BBUF[2 * a + 1], Ah = BBUF[2 * a]; // prettier-ignore
let Bl = BBUF[2 * b + 1], Bh = BBUF[2 * b]; // prettier-ignore
let Cl = BBUF[2 * c + 1], Ch = BBUF[2 * c]; // prettier-ignore
let Dl = BBUF[2 * d + 1], Dh = BBUF[2 * d]; // prettier-ignore
// v[a] = (v[a] + v[b] + x) | 0;
let ll = u64.add3L(Al, Bl, Xl);
Ah = u64.add3H(ll, Ah, Bh, Xh);
Al = ll | 0;
// v[d] = rotr(v[d] ^ v[a], 16)
({ Dh, Dl } = { Dh: Dh ^ Ah, Dl: Dl ^ Al });
({ Dh, Dl } = { Dh: u64.rotrSH(Dh, Dl, 16), Dl: u64.rotrSL(Dh, Dl, 16) });
// v[c] = (v[c] + v[d]) | 0;
({ h: Ch, l: Cl } = u64.add(Ch, Cl, Dh, Dl));
// v[b] = rotr(v[b] ^ v[c], 11)
({ Bh, Bl } = { Bh: Bh ^ Ch, Bl: Bl ^ Cl });
({ Bh, Bl } = { Bh: u64.rotrSH(Bh, Bl, 11), Bl: u64.rotrSL(Bh, Bl, 11) });
((BBUF[2 * a + 1] = Al), (BBUF[2 * a] = Ah));
((BBUF[2 * b + 1] = Bl), (BBUF[2 * b] = Bh));
((BBUF[2 * c + 1] = Cl), (BBUF[2 * c] = Ch));
((BBUF[2 * d + 1] = Dl), (BBUF[2 * d] = Dh));
}
// Legacy field names keep the local `l/h` spelling, but array/state order stays `[high, low]` to
// match the IV tables and `BBUF` layout.
class BLAKE1_64B extends BLAKE1 {
v0l;
v0h;
v1l;
v1h;
v2l;
v2h;
v3l;
v3h;
v4l;
v4h;
v5l;
v5h;
v6l;
v6h;
v7l;
v7h;
constructor(outputLen, IV, lengthFlag, opts = {}) {
super(128, outputLen, lengthFlag, 16, 8, B64C, opts);
this.v0l = IV[0] | 0;
this.v0h = IV[1] | 0;
this.v1l = IV[2] | 0;
this.v1h = IV[3] | 0;
this.v2l = IV[4] | 0;
this.v2h = IV[5] | 0;
this.v3l = IV[6] | 0;
this.v3h = IV[7] | 0;
this.v4l = IV[8] | 0;
this.v4h = IV[9] | 0;
this.v5l = IV[10] | 0;
this.v5h = IV[11] | 0;
this.v6l = IV[12] | 0;
this.v6h = IV[13] | 0;
this.v7l = IV[14] | 0;
this.v7h = IV[15] | 0;
}
// prettier-ignore
get() {
let { v0l, v0h, v1l, v1h, v2l, v2h, v3l, v3h, v4l, v4h, v5l, v5h, v6l, v6h, v7l, v7h } = this;
return [v0l, v0h, v1l, v1h, v2l, v2h, v3l, v3h, v4l, v4h, v5l, v5h, v6l, v6h, v7l, v7h];
}
// prettier-ignore
set(v0l, v0h, v1l, v1h, v2l, v2h, v3l, v3h, v4l, v4h, v5l, v5h, v6l, v6h, v7l, v7h) {
this.v0l = v0l | 0;
this.v0h = v0h | 0;
this.v1l = v1l | 0;
this.v1h = v1h | 0;
this.v2l = v2l | 0;
this.v2h = v2h | 0;
this.v3l = v3l | 0;
this.v3h = v3h | 0;
this.v4l = v4l | 0;
this.v4h = v4h | 0;
this.v5l = v5l | 0;
this.v5h = v5h | 0;
this.v6l = v6l | 0;
this.v6h = v6h | 0;
this.v7l = v7l | 0;
this.v7h = v7h | 0;
}
destroy() {
super.destroy();
this.set(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
}
compress(view, offset, withLength = true) {
for (let i = 0; i < 32; i++, offset += 4)
BLAKE512_W[i] = view.getUint32(offset, false);
this.get().forEach((v, i) => (BBUF[i] = v)); // First half from state.
BBUF.set(this.constants.subarray(0, 16), 16);
if (withLength) {
// Blake1-64 injects the 64-bit bit counter into `v12` and `v13`; the final all-padding
// block passes `withLength = false`, leaving the trailing constant lanes untouched.
const { h, l } = u64.fromBig(BigInt(this.length * 8));
BBUF[24] = (BBUF[24] ^ h) >>> 0;
BBUF[25] = (BBUF[25] ^ l) >>> 0;
BBUF[26] = (BBUF[26] ^ h) >>> 0;
BBUF[27] = (BBUF[27] ^ l) >>> 0;
}
for (let i = 0, k = 0; i < 16; i++) {
G1b(0, 4, 8, 12, BLAKE512_W, k++);
G2b(0, 4, 8, 12, BLAKE512_W, k++);
G1b(1, 5, 9, 13, BLAKE512_W, k++);
G2b(1, 5, 9, 13, BLAKE512_W, k++);
G1b(2, 6, 10, 14, BLAKE512_W, k++);
G2b(2, 6, 10, 14, BLAKE512_W, k++);
G1b(3, 7, 11, 15, BLAKE512_W, k++);
G2b(3, 7, 11, 15, BLAKE512_W, k++);
G1b(0, 5, 10, 15, BLAKE512_W, k++);
G2b(0, 5, 10, 15, BLAKE512_W, k++);
G1b(1, 6, 11, 12, BLAKE512_W, k++);
G2b(1, 6, 11, 12, BLAKE512_W, k++);
G1b(2, 7, 8, 13, BLAKE512_W, k++);
G2b(2, 7, 8, 13, BLAKE512_W, k++);
G1b(3, 4, 9, 14, BLAKE512_W, k++);
G2b(3, 4, 9, 14, BLAKE512_W, k++);
}
this.v0l ^= BBUF[0] ^ BBUF[16] ^ this.salt[0];
this.v0h ^= BBUF[1] ^ BBUF[17] ^ this.salt[1];
this.v1l ^= BBUF[2] ^ BBUF[18] ^ this.salt[2];
this.v1h ^= BBUF[3] ^ BBUF[19] ^ this.salt[3];
this.v2l ^= BBUF[4] ^ BBUF[20] ^ this.salt[4];
this.v2h ^= BBUF[5] ^ BBUF[21] ^ this.salt[5];
this.v3l ^= BBUF[6] ^ BBUF[22] ^ this.salt[6];
this.v3h ^= BBUF[7] ^ BBUF[23] ^ this.salt[7];
this.v4l ^= BBUF[8] ^ BBUF[24] ^ this.salt[0];
this.v4h ^= BBUF[9] ^ BBUF[25] ^ this.salt[1];
this.v5l ^= BBUF[10] ^ BBUF[26] ^ this.salt[2];
this.v5h ^= BBUF[11] ^ BBUF[27] ^ this.salt[3];
this.v6l ^= BBUF[12] ^ BBUF[28] ^ this.salt[4];
this.v6h ^= BBUF[13] ^ BBUF[29] ^ this.salt[5];
this.v7l ^= BBUF[14] ^ BBUF[30] ^ this.salt[6];
this.v7h ^= BBUF[15] ^ BBUF[31] ^ this.salt[7];
clean(BBUF, BLAKE512_W);
}
}
/** Internal blake1-224 hash class. */
export class _BLAKE224 extends BLAKE1_32B {
constructor(opts = {}) {
super(28, B224_IV, 0b0000_0000, opts);
}
}
/** Internal blake1-256 hash class. */
export class _BLAKE256 extends BLAKE1_32B {
constructor(opts = {}) {
super(32, B256_IV, 0b0000_0001, opts);
}
}
/** Internal blake1-384 hash class. */
export class _BLAKE384 extends BLAKE1_64B {
constructor(opts = {}) {
super(48, B384_IV, 0b0000_0000, opts);
}
}
/** Internal blake1-512 hash class. */
export class _BLAKE512 extends BLAKE1_64B {
constructor(opts = {}) {
super(64, B512_IV, 0b0000_0001, opts);
}
}
/**
* Blake1-224 hash function.
* @param msg - message bytes to hash
* @param opts - Optional Blake1 settings. See {@link BlakeOpts}. If set,
* `opts.salt` must be exactly 16 bytes.
* @returns Digest bytes.
* @example
* Hash a message with Blake1-224.
* ```ts
* blake224(new Uint8Array([97, 98, 99]));
* ```
*/
export const blake224 = /* @__PURE__ */ createHasher((opts) => new _BLAKE224(opts));
/**
* Blake1-256 hash function.
* @param msg - message bytes to hash
* @param opts - Optional Blake1 settings. See {@link BlakeOpts}. If set,
* `opts.salt` must be exactly 16 bytes.
* @returns Digest bytes.
* @example
* Hash a message with Blake1-256.
* ```ts
* blake256(new Uint8Array([97, 98, 99]));
* ```
*/
export const blake256 = /* @__PURE__ */ createHasher((opts) => new _BLAKE256(opts));
/**
* Blake1-384 hash function.
* @param msg - message bytes to hash
* @param opts - Optional Blake1 settings. See {@link BlakeOpts}. If set,
* `opts.salt` must be exactly 32 bytes.
* @returns Digest bytes.
* @example
* Hash a message with Blake1-384.
* ```ts
* blake384(new Uint8Array([97, 98, 99]));
* ```
*/
export const blake384 = /* @__PURE__ */ createHasher((opts) => new _BLAKE384(opts));
/**
* Blake1-512 hash function.
* @param msg - message bytes to hash
* @param opts - Optional Blake1 settings. See {@link BlakeOpts}. If set,
* `opts.salt` must be exactly 32 bytes.
* @returns Digest bytes.
* @example
* Hash a message with Blake1-512.
* ```ts
* blake512(new Uint8Array([97, 98, 99]));
* ```
*/
export const blake512 = /* @__PURE__ */ createHasher((opts) => new _BLAKE512(opts));
//# sourceMappingURL=blake1.js.map

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import { type CHash, type Hash, type TArg, type TRet } from './utils.ts';
/**
* Blake hash options.
* `dkLen` is output length. `key` is used in MAC mode. `salt` is used in
* KDF mode.
*/
export type Blake2Opts = {
/** Desired digest length in bytes. RFC 7693 uses 1..64 for blake2b and 1..32 for blake2s. */
dkLen?: number;
/** Optional MAC key. */
key?: Uint8Array;
/** Optional salt mixed into initialization. */
salt?: Uint8Array;
/** Optional personalization bytes. */
personalization?: Uint8Array;
};
/** Internal base class for BLAKE2. */
export declare abstract class _BLAKE2<T extends _BLAKE2<T>> implements Hash<T> {
protected abstract compress(msg: Uint32Array, offset: number, isLast: boolean): void;
protected abstract get(): number[];
protected abstract set(...args: number[]): void;
abstract destroy(): void;
protected buffer: Uint8Array;
protected buffer32: Uint32Array;
protected finished: boolean;
protected destroyed: boolean;
protected length: number;
protected pos: number;
readonly blockLen: number;
readonly outputLen: number;
readonly canXOF: boolean;
constructor(blockLen: number, outputLen: number);
update(data: TArg<Uint8Array>): this;
digestInto(out: TArg<Uint8Array>): void;
digest(): TRet<Uint8Array>;
_cloneInto(to?: T): T;
clone(): T;
}
/** Internal blake2b hash class with state stored as LE u32 low/high halves. */
export declare class _BLAKE2b extends _BLAKE2<_BLAKE2b> {
private v0l;
private v0h;
private v1l;
private v1h;
private v2l;
private v2h;
private v3l;
private v3h;
private v4l;
private v4h;
private v5l;
private v5h;
private v6l;
private v6h;
private v7l;
private v7h;
constructor(opts?: Blake2Opts);
protected get(): [
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number
];
protected set(v0l: number, v0h: number, v1l: number, v1h: number, v2l: number, v2h: number, v3l: number, v3h: number, v4l: number, v4h: number, v5l: number, v5h: number, v6l: number, v6h: number, v7l: number, v7h: number): void;
protected compress(msg: Uint32Array, offset: number, isLast: boolean): void;
destroy(): void;
}
/**
* Blake2b hash function. 64-bit. 1.5x slower than blake2s in JS.
* @param msg - message that would be hashed
* @param opts - Optional output, MAC, salt, and personalization settings.
* `dkLen` must be 1..64 bytes; `salt` and `personalization`, if present,
* must be 16 bytes each. See {@link Blake2Opts}.
* @returns Digest bytes.
* @example
* Hash a message with Blake2b.
* ```ts
* blake2b(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const blake2b: TRet<CHash<_BLAKE2b, Blake2Opts>>;
/** Internal type, 16 numbers. */
export type _Num16 = {
v0: number;
v1: number;
v2: number;
v3: number;
v4: number;
v5: number;
v6: number;
v7: number;
v8: number;
v9: number;
v10: number;
v11: number;
v12: number;
v13: number;
v14: number;
v15: number;
};
/**
* BLAKE2-compress core method.
* Runs only the round function over a caller-supplied local vector; callers initialize `v0..v15`
* and apply the final `h[i] ^= v[i] ^ v[i + 8]` fold themselves.
* @param s - flattened sigma schedule bytes
* @param offset - starting word offset inside `msg`, not a byte offset
* @param msg - message words
* @param rounds - round count to execute
* @param v0 - state word 0
* @param v1 - state word 1
* @param v2 - state word 2
* @param v3 - state word 3
* @param v4 - state word 4
* @param v5 - state word 5
* @param v6 - state word 6
* @param v7 - state word 7
* @param v8 - state word 8
* @param v9 - state word 9
* @param v10 - state word 10
* @param v11 - state word 11
* @param v12 - state word 12
* @param v13 - state word 13
* @param v14 - state word 14
* @param v15 - state word 15
* @returns Updated compression state words.
* @example
* Run the BLAKE2 compression core on zeroed state and message words.
* ```ts
* import { compress } from '@noble/hashes/blake2.js';
* const state = compress(
* new Uint8Array(16),
* 0,
* new Uint32Array(16),
* 1,
* 0, 0, 0, 0, 0, 0, 0, 0,
* 0, 0, 0, 0, 0, 0, 0, 0
* );
* state.v0;
* ```
*/
export declare function compress(s: TArg<Uint8Array>, offset: number, msg: TArg<Uint32Array>, rounds: number, v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number, v8: number, v9: number, v10: number, v11: number, v12: number, v13: number, v14: number, v15: number): _Num16;
/** Internal blake2s hash class. */
export declare class _BLAKE2s extends _BLAKE2<_BLAKE2s> {
private v0;
private v1;
private v2;
private v3;
private v4;
private v5;
private v6;
private v7;
constructor(opts?: Blake2Opts);
protected get(): [number, number, number, number, number, number, number, number];
protected set(v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number): void;
protected compress(msg: Uint32Array, offset: number, isLast: boolean): void;
destroy(): void;
}
/**
* Blake2s hash function. Focuses on 8-bit to 32-bit platforms. 1.5x faster than blake2b in JS.
* @param msg - message that would be hashed
* @param opts - Optional output, MAC, salt, and personalization settings.
* `dkLen` must be 1..32 bytes; `salt` and `personalization`, if present,
* must be 8 bytes each. See {@link Blake2Opts}.
* @returns Digest bytes.
* @example
* Hash a message with Blake2s.
* ```ts
* blake2s(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const blake2s: TRet<CHash<_BLAKE2s, Blake2Opts>>;
//# sourceMappingURL=blake2.d.ts.map

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electron/node_modules/@noble/hashes/blake2.js generated vendored Normal file
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/**
* blake2b (64-bit) & blake2s (8 to 32-bit) hash functions.
* b could have been faster, but there is no fast u64 in js, so s is 1.5x faster.
* @module
*/
import { BSIGMA, G1s, G2s } from "./_blake.js";
import { SHA256_IV } from "./_md.js";
import * as u64 from "./_u64.js";
// prettier-ignore
import { abytes, aexists, anumber, aoutput, clean, createHasher, swap32IfBE, swap8IfBE, u32 } from "./utils.js";
// Same IV words as `SHA512_IV`, but endian-swapped into LE u32 low/high halves
// for the BLAKE2b u64 helpers below.
const B2B_IV = /* @__PURE__ */ Uint32Array.from([
0xf3bcc908, 0x6a09e667, 0x84caa73b, 0xbb67ae85, 0xfe94f82b, 0x3c6ef372, 0x5f1d36f1, 0xa54ff53a,
0xade682d1, 0x510e527f, 0x2b3e6c1f, 0x9b05688c, 0xfb41bd6b, 0x1f83d9ab, 0x137e2179, 0x5be0cd19,
]);
// Shared synchronous BLAKE2b work vector as LE u32 low/high halves.
const BBUF = /* @__PURE__ */ new Uint32Array(32);
// BLAKE2b G mix split into two half-rounds over LE u32 low/high limbs.
function G1b(a, b, c, d, msg, x) {
// NOTE: V is LE here
const Xl = msg[x], Xh = msg[x + 1]; // prettier-ignore
let Al = BBUF[2 * a], Ah = BBUF[2 * a + 1]; // prettier-ignore
let Bl = BBUF[2 * b], Bh = BBUF[2 * b + 1]; // prettier-ignore
let Cl = BBUF[2 * c], Ch = BBUF[2 * c + 1]; // prettier-ignore
let Dl = BBUF[2 * d], Dh = BBUF[2 * d + 1]; // prettier-ignore
// v[a] = (v[a] + v[b] + x) | 0;
let ll = u64.add3L(Al, Bl, Xl);
Ah = u64.add3H(ll, Ah, Bh, Xh);
Al = ll | 0;
// v[d] = rotr(v[d] ^ v[a], 32)
({ Dh, Dl } = { Dh: Dh ^ Ah, Dl: Dl ^ Al });
({ Dh, Dl } = { Dh: u64.rotr32H(Dh, Dl), Dl: u64.rotr32L(Dh, Dl) });
// v[c] = (v[c] + v[d]) | 0;
({ h: Ch, l: Cl } = u64.add(Ch, Cl, Dh, Dl));
// v[b] = rotr(v[b] ^ v[c], 24)
({ Bh, Bl } = { Bh: Bh ^ Ch, Bl: Bl ^ Cl });
({ Bh, Bl } = { Bh: u64.rotrSH(Bh, Bl, 24), Bl: u64.rotrSL(Bh, Bl, 24) });
((BBUF[2 * a] = Al), (BBUF[2 * a + 1] = Ah));
((BBUF[2 * b] = Bl), (BBUF[2 * b + 1] = Bh));
((BBUF[2 * c] = Cl), (BBUF[2 * c + 1] = Ch));
((BBUF[2 * d] = Dl), (BBUF[2 * d + 1] = Dh));
}
// Second half-round of the same LE-limb BLAKE2b G mix; `x` is the message word offset.
function G2b(a, b, c, d, msg, x) {
// NOTE: V is LE here
const Xl = msg[x], Xh = msg[x + 1]; // prettier-ignore
let Al = BBUF[2 * a], Ah = BBUF[2 * a + 1]; // prettier-ignore
let Bl = BBUF[2 * b], Bh = BBUF[2 * b + 1]; // prettier-ignore
let Cl = BBUF[2 * c], Ch = BBUF[2 * c + 1]; // prettier-ignore
let Dl = BBUF[2 * d], Dh = BBUF[2 * d + 1]; // prettier-ignore
// v[a] = (v[a] + v[b] + x) | 0;
let ll = u64.add3L(Al, Bl, Xl);
Ah = u64.add3H(ll, Ah, Bh, Xh);
Al = ll | 0;
// v[d] = rotr(v[d] ^ v[a], 16)
({ Dh, Dl } = { Dh: Dh ^ Ah, Dl: Dl ^ Al });
({ Dh, Dl } = { Dh: u64.rotrSH(Dh, Dl, 16), Dl: u64.rotrSL(Dh, Dl, 16) });
// v[c] = (v[c] + v[d]) | 0;
({ h: Ch, l: Cl } = u64.add(Ch, Cl, Dh, Dl));
// v[b] = rotr(v[b] ^ v[c], 63)
({ Bh, Bl } = { Bh: Bh ^ Ch, Bl: Bl ^ Cl });
({ Bh, Bl } = { Bh: u64.rotrBH(Bh, Bl, 63), Bl: u64.rotrBL(Bh, Bl, 63) });
((BBUF[2 * a] = Al), (BBUF[2 * a + 1] = Ah));
((BBUF[2 * b] = Bl), (BBUF[2 * b + 1] = Bh));
((BBUF[2 * c] = Cl), (BBUF[2 * c + 1] = Ch));
((BBUF[2 * d] = Dl), (BBUF[2 * d + 1] = Dh));
}
function checkBlake2Opts(outputLen, opts = {}, keyLen, saltLen, persLen) {
anumber(keyLen);
// RFC 7693 §2.1 requires digest length nn in 1..keyLen.
if (outputLen <= 0 || outputLen > keyLen)
throw new Error('outputLen bigger than keyLen');
const { key, salt, personalization } = opts;
// This API uses `undefined` for the RFC 7693 `kk = 0` case, so a provided key must be non-empty.
if (key !== undefined && (key.length < 1 || key.length > keyLen))
throw new Error('"key" expected to be undefined or of length=1..' + keyLen);
if (salt !== undefined)
abytes(salt, saltLen, 'salt');
if (personalization !== undefined)
abytes(personalization, persLen, 'personalization');
}
/** Internal base class for BLAKE2. */
export class _BLAKE2 {
buffer;
buffer32;
finished = false;
destroyed = false;
length = 0;
pos = 0;
blockLen;
outputLen;
canXOF = false;
constructor(blockLen, outputLen) {
anumber(blockLen);
anumber(outputLen);
this.blockLen = blockLen;
this.outputLen = outputLen;
this.buffer = new Uint8Array(blockLen);
this.buffer32 = u32(this.buffer);
}
update(data) {
aexists(this);
abytes(data);
// Main difference with other hashes: there is flag for last block,
// so we cannot process current block before we know that there
// is the next one. This significantly complicates logic and reduces ability
// to do zero-copy processing
const { blockLen, buffer, buffer32 } = this;
const len = data.length;
const offset = data.byteOffset;
const buf = data.buffer;
for (let pos = 0; pos < len;) {
// If buffer is full and we still have input (don't process last block, same as blake2s)
if (this.pos === blockLen) {
swap32IfBE(buffer32);
this.compress(buffer32, 0, false);
swap32IfBE(buffer32);
this.pos = 0;
}
const take = Math.min(blockLen - this.pos, len - pos);
const dataOffset = offset + pos;
// Zero-copy only for full, 4-byte-aligned, non-final blocks.
if (take === blockLen && !(dataOffset % 4) && pos + take < len) {
const data32 = new Uint32Array(buf, dataOffset, Math.floor((len - pos) / 4));
swap32IfBE(data32);
for (let pos32 = 0; pos + blockLen < len; pos32 += buffer32.length, pos += blockLen) {
this.length += blockLen;
this.compress(data32, pos32, false);
}
swap32IfBE(data32);
continue;
}
buffer.set(data.subarray(pos, pos + take), this.pos);
this.pos += take;
this.length += take;
pos += take;
}
return this;
}
digestInto(out) {
aexists(this);
aoutput(out, this);
const { pos, buffer32 } = this;
this.finished = true;
// Padding
clean(this.buffer.subarray(pos));
swap32IfBE(buffer32);
this.compress(buffer32, 0, true);
swap32IfBE(buffer32);
// Reject unaligned views explicitly instead of hiding them behind a full scratch copy.
if (out.byteOffset & 3)
throw new RangeError('"digestInto() output" expected 4-byte aligned byteOffset, got ' + out.byteOffset);
const state = this.get();
const out32 = u32(out);
const full = Math.floor(this.outputLen / 4);
for (let i = 0; i < full; i++)
out32[i] = swap8IfBE(state[i]);
const tail = this.outputLen % 4;
if (!tail)
return;
const off = full * 4;
const word = state[full];
for (let i = 0; i < tail; i++)
out[off + i] = word >>> (8 * i);
}
digest() {
const { buffer, outputLen } = this;
this.digestInto(buffer);
// Return a copy so callers do not alias the instance scratch buffer used during finalization.
const res = buffer.slice(0, outputLen);
this.destroy();
return res;
}
_cloneInto(to) {
const { buffer, length, finished, destroyed, outputLen, pos } = this;
// Recreate only `dkLen`; key/salt/personalization are already absorbed into the copied state.
to ||= new this.constructor({ dkLen: outputLen });
to.set(...this.get());
to.buffer.set(buffer);
to.destroyed = destroyed;
to.finished = finished;
to.length = length;
to.pos = pos;
// @ts-ignore
to.outputLen = outputLen;
return to;
}
clone() {
return this._cloneInto();
}
}
/** Internal blake2b hash class with state stored as LE u32 low/high halves. */
export class _BLAKE2b extends _BLAKE2 {
// Same IV words as SHA-512 / BLAKE2b, encoded as LE u32 low/high halves.
v0l = B2B_IV[0] | 0;
v0h = B2B_IV[1] | 0;
v1l = B2B_IV[2] | 0;
v1h = B2B_IV[3] | 0;
v2l = B2B_IV[4] | 0;
v2h = B2B_IV[5] | 0;
v3l = B2B_IV[6] | 0;
v3h = B2B_IV[7] | 0;
v4l = B2B_IV[8] | 0;
v4h = B2B_IV[9] | 0;
v5l = B2B_IV[10] | 0;
v5h = B2B_IV[11] | 0;
v6l = B2B_IV[12] | 0;
v6h = B2B_IV[13] | 0;
v7l = B2B_IV[14] | 0;
v7h = B2B_IV[15] | 0;
constructor(opts = {}) {
const olen = opts.dkLen === undefined ? 64 : opts.dkLen;
super(128, olen);
checkBlake2Opts(olen, opts, 64, 16, 16);
let { key, personalization, salt } = opts;
let keyLength = 0;
if (key !== undefined) {
abytes(key, undefined, 'key');
keyLength = key.length;
}
// RFC 7693 §2.5: xor `p[0] = 0x0101kknn` into the low 32 bits of `h[0]`;
// the high 32 bits stay at `IV[0]`.
this.v0l ^= this.outputLen | (keyLength << 8) | (0x01 << 16) | (0x01 << 24);
if (salt !== undefined) {
abytes(salt, undefined, 'salt');
const slt = u32(salt);
this.v4l ^= swap8IfBE(slt[0]);
this.v4h ^= swap8IfBE(slt[1]);
this.v5l ^= swap8IfBE(slt[2]);
this.v5h ^= swap8IfBE(slt[3]);
}
if (personalization !== undefined) {
abytes(personalization, undefined, 'personalization');
const pers = u32(personalization);
this.v6l ^= swap8IfBE(pers[0]);
this.v6h ^= swap8IfBE(pers[1]);
this.v7l ^= swap8IfBE(pers[2]);
this.v7h ^= swap8IfBE(pers[3]);
}
if (key !== undefined) {
// Pad to blockLen and update
const tmp = new Uint8Array(this.blockLen);
tmp.set(key);
this.update(tmp);
}
}
// prettier-ignore
get() {
let { v0l, v0h, v1l, v1h, v2l, v2h, v3l, v3h, v4l, v4h, v5l, v5h, v6l, v6h, v7l, v7h } = this;
return [v0l, v0h, v1l, v1h, v2l, v2h, v3l, v3h, v4l, v4h, v5l, v5h, v6l, v6h, v7l, v7h];
}
// prettier-ignore
set(v0l, v0h, v1l, v1h, v2l, v2h, v3l, v3h, v4l, v4h, v5l, v5h, v6l, v6h, v7l, v7h) {
this.v0l = v0l | 0;
this.v0h = v0h | 0;
this.v1l = v1l | 0;
this.v1h = v1h | 0;
this.v2l = v2l | 0;
this.v2h = v2h | 0;
this.v3l = v3l | 0;
this.v3h = v3h | 0;
this.v4l = v4l | 0;
this.v4h = v4h | 0;
this.v5l = v5l | 0;
this.v5h = v5h | 0;
this.v6l = v6l | 0;
this.v6h = v6h | 0;
this.v7l = v7l | 0;
this.v7h = v7h | 0;
}
compress(msg, offset, isLast) {
this.get().forEach((v, i) => (BBUF[i] = v)); // First half from state.
BBUF.set(B2B_IV, 16); // Second half from IV.
let { h, l } = u64.fromBig(BigInt(this.length));
BBUF[24] = B2B_IV[8] ^ l; // Low word of the offset.
BBUF[25] = B2B_IV[9] ^ h; // High word.
// Invert all bits for last block
if (isLast) {
BBUF[28] = ~BBUF[28];
BBUF[29] = ~BBUF[29];
}
let j = 0;
const s = BSIGMA;
// SIGMA selects 64-bit message words; multiply by 2 because `msg` stores
// each word as [low32, high32].
for (let i = 0; i < 12; i++) {
G1b(0, 4, 8, 12, msg, offset + 2 * s[j++]);
G2b(0, 4, 8, 12, msg, offset + 2 * s[j++]);
G1b(1, 5, 9, 13, msg, offset + 2 * s[j++]);
G2b(1, 5, 9, 13, msg, offset + 2 * s[j++]);
G1b(2, 6, 10, 14, msg, offset + 2 * s[j++]);
G2b(2, 6, 10, 14, msg, offset + 2 * s[j++]);
G1b(3, 7, 11, 15, msg, offset + 2 * s[j++]);
G2b(3, 7, 11, 15, msg, offset + 2 * s[j++]);
G1b(0, 5, 10, 15, msg, offset + 2 * s[j++]);
G2b(0, 5, 10, 15, msg, offset + 2 * s[j++]);
G1b(1, 6, 11, 12, msg, offset + 2 * s[j++]);
G2b(1, 6, 11, 12, msg, offset + 2 * s[j++]);
G1b(2, 7, 8, 13, msg, offset + 2 * s[j++]);
G2b(2, 7, 8, 13, msg, offset + 2 * s[j++]);
G1b(3, 4, 9, 14, msg, offset + 2 * s[j++]);
G2b(3, 4, 9, 14, msg, offset + 2 * s[j++]);
}
this.v0l ^= BBUF[0] ^ BBUF[16];
this.v0h ^= BBUF[1] ^ BBUF[17];
this.v1l ^= BBUF[2] ^ BBUF[18];
this.v1h ^= BBUF[3] ^ BBUF[19];
this.v2l ^= BBUF[4] ^ BBUF[20];
this.v2h ^= BBUF[5] ^ BBUF[21];
this.v3l ^= BBUF[6] ^ BBUF[22];
this.v3h ^= BBUF[7] ^ BBUF[23];
this.v4l ^= BBUF[8] ^ BBUF[24];
this.v4h ^= BBUF[9] ^ BBUF[25];
this.v5l ^= BBUF[10] ^ BBUF[26];
this.v5h ^= BBUF[11] ^ BBUF[27];
this.v6l ^= BBUF[12] ^ BBUF[28];
this.v6h ^= BBUF[13] ^ BBUF[29];
this.v7l ^= BBUF[14] ^ BBUF[30];
this.v7h ^= BBUF[15] ^ BBUF[31];
clean(BBUF);
}
destroy() {
this.destroyed = true;
clean(this.buffer32);
this.set(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
}
}
/**
* Blake2b hash function. 64-bit. 1.5x slower than blake2s in JS.
* @param msg - message that would be hashed
* @param opts - Optional output, MAC, salt, and personalization settings.
* `dkLen` must be 1..64 bytes; `salt` and `personalization`, if present,
* must be 16 bytes each. See {@link Blake2Opts}.
* @returns Digest bytes.
* @example
* Hash a message with Blake2b.
* ```ts
* blake2b(new Uint8Array([97, 98, 99]));
* ```
*/
export const blake2b = /* @__PURE__ */ createHasher((opts) => new _BLAKE2b(opts));
/**
* BLAKE2-compress core method.
* Runs only the round function over a caller-supplied local vector; callers initialize `v0..v15`
* and apply the final `h[i] ^= v[i] ^ v[i + 8]` fold themselves.
* @param s - flattened sigma schedule bytes
* @param offset - starting word offset inside `msg`, not a byte offset
* @param msg - message words
* @param rounds - round count to execute
* @param v0 - state word 0
* @param v1 - state word 1
* @param v2 - state word 2
* @param v3 - state word 3
* @param v4 - state word 4
* @param v5 - state word 5
* @param v6 - state word 6
* @param v7 - state word 7
* @param v8 - state word 8
* @param v9 - state word 9
* @param v10 - state word 10
* @param v11 - state word 11
* @param v12 - state word 12
* @param v13 - state word 13
* @param v14 - state word 14
* @param v15 - state word 15
* @returns Updated compression state words.
* @example
* Run the BLAKE2 compression core on zeroed state and message words.
* ```ts
* import { compress } from '@noble/hashes/blake2.js';
* const state = compress(
* new Uint8Array(16),
* 0,
* new Uint32Array(16),
* 1,
* 0, 0, 0, 0, 0, 0, 0, 0,
* 0, 0, 0, 0, 0, 0, 0, 0
* );
* state.v0;
* ```
*/
// prettier-ignore
export function compress(s, offset, msg, rounds, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15) {
let j = 0;
for (let i = 0; i < rounds; i++) {
({ a: v0, b: v4, c: v8, d: v12 } = G1s(v0, v4, v8, v12, msg[offset + s[j++]]));
({ a: v0, b: v4, c: v8, d: v12 } = G2s(v0, v4, v8, v12, msg[offset + s[j++]]));
({ a: v1, b: v5, c: v9, d: v13 } = G1s(v1, v5, v9, v13, msg[offset + s[j++]]));
({ a: v1, b: v5, c: v9, d: v13 } = G2s(v1, v5, v9, v13, msg[offset + s[j++]]));
({ a: v2, b: v6, c: v10, d: v14 } = G1s(v2, v6, v10, v14, msg[offset + s[j++]]));
({ a: v2, b: v6, c: v10, d: v14 } = G2s(v2, v6, v10, v14, msg[offset + s[j++]]));
({ a: v3, b: v7, c: v11, d: v15 } = G1s(v3, v7, v11, v15, msg[offset + s[j++]]));
({ a: v3, b: v7, c: v11, d: v15 } = G2s(v3, v7, v11, v15, msg[offset + s[j++]]));
({ a: v0, b: v5, c: v10, d: v15 } = G1s(v0, v5, v10, v15, msg[offset + s[j++]]));
({ a: v0, b: v5, c: v10, d: v15 } = G2s(v0, v5, v10, v15, msg[offset + s[j++]]));
({ a: v1, b: v6, c: v11, d: v12 } = G1s(v1, v6, v11, v12, msg[offset + s[j++]]));
({ a: v1, b: v6, c: v11, d: v12 } = G2s(v1, v6, v11, v12, msg[offset + s[j++]]));
({ a: v2, b: v7, c: v8, d: v13 } = G1s(v2, v7, v8, v13, msg[offset + s[j++]]));
({ a: v2, b: v7, c: v8, d: v13 } = G2s(v2, v7, v8, v13, msg[offset + s[j++]]));
({ a: v3, b: v4, c: v9, d: v14 } = G1s(v3, v4, v9, v14, msg[offset + s[j++]]));
({ a: v3, b: v4, c: v9, d: v14 } = G2s(v3, v4, v9, v14, msg[offset + s[j++]]));
}
return { v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15 };
}
// Blake2s reuses the SHA-256 IV words as-is.
const B2S_IV = /* @__PURE__ */ SHA256_IV.slice();
/** Internal blake2s hash class. */
export class _BLAKE2s extends _BLAKE2 {
// Internal state, same as SHA-256
v0 = B2S_IV[0] | 0;
v1 = B2S_IV[1] | 0;
v2 = B2S_IV[2] | 0;
v3 = B2S_IV[3] | 0;
v4 = B2S_IV[4] | 0;
v5 = B2S_IV[5] | 0;
v6 = B2S_IV[6] | 0;
v7 = B2S_IV[7] | 0;
constructor(opts = {}) {
const olen = opts.dkLen === undefined ? 32 : opts.dkLen;
super(64, olen);
checkBlake2Opts(olen, opts, 32, 8, 8);
let { key, personalization, salt } = opts;
let keyLength = 0;
if (key !== undefined) {
abytes(key, undefined, 'key');
keyLength = key.length;
}
// RFC 7693 §2.5: xor `p[0] = 0x0101kknn` directly into `h[0]`, since
// BLAKE2s stores each state word as one `u32`.
this.v0 ^= this.outputLen | (keyLength << 8) | (0x01 << 16) | (0x01 << 24);
if (salt !== undefined) {
abytes(salt, undefined, 'salt');
const slt = u32(salt);
this.v4 ^= swap8IfBE(slt[0]);
this.v5 ^= swap8IfBE(slt[1]);
}
if (personalization !== undefined) {
abytes(personalization, undefined, 'personalization');
const pers = u32(personalization);
this.v6 ^= swap8IfBE(pers[0]);
this.v7 ^= swap8IfBE(pers[1]);
}
if (key !== undefined) {
// Pad to blockLen and update
const tmp = new Uint8Array(this.blockLen);
tmp.set(key);
this.update(tmp);
}
}
get() {
const { v0, v1, v2, v3, v4, v5, v6, v7 } = this;
return [v0, v1, v2, v3, v4, v5, v6, v7];
}
// prettier-ignore
set(v0, v1, v2, v3, v4, v5, v6, v7) {
this.v0 = v0 | 0;
this.v1 = v1 | 0;
this.v2 = v2 | 0;
this.v3 = v3 | 0;
this.v4 = v4 | 0;
this.v5 = v5 | 0;
this.v6 = v6 | 0;
this.v7 = v7 | 0;
}
compress(msg, offset, isLast) {
const { h, l } = u64.fromBig(BigInt(this.length));
// Seed v8..v15 from the IV, xor the low/high 32-bit byte counter into
// v12/v13, and invert v14 on the final block.
// prettier-ignore
const { v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15 } = compress(BSIGMA, offset, msg, 10, this.v0, this.v1, this.v2, this.v3, this.v4, this.v5, this.v6, this.v7, B2S_IV[0], B2S_IV[1], B2S_IV[2], B2S_IV[3], l ^ B2S_IV[4], h ^ B2S_IV[5], isLast ? ~B2S_IV[6] : B2S_IV[6], B2S_IV[7]);
this.v0 ^= v0 ^ v8;
this.v1 ^= v1 ^ v9;
this.v2 ^= v2 ^ v10;
this.v3 ^= v3 ^ v11;
this.v4 ^= v4 ^ v12;
this.v5 ^= v5 ^ v13;
this.v6 ^= v6 ^ v14;
this.v7 ^= v7 ^ v15;
}
destroy() {
this.destroyed = true;
clean(this.buffer32);
this.set(0, 0, 0, 0, 0, 0, 0, 0);
}
}
/**
* Blake2s hash function. Focuses on 8-bit to 32-bit platforms. 1.5x faster than blake2b in JS.
* @param msg - message that would be hashed
* @param opts - Optional output, MAC, salt, and personalization settings.
* `dkLen` must be 1..32 bytes; `salt` and `personalization`, if present,
* must be 8 bytes each. See {@link Blake2Opts}.
* @returns Digest bytes.
* @example
* Hash a message with Blake2s.
* ```ts
* blake2s(new Uint8Array([97, 98, 99]));
* ```
*/
export const blake2s = /* @__PURE__ */ createHasher((opts) => new _BLAKE2s(opts));
//# sourceMappingURL=blake2.js.map

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import { _BLAKE2 } from './blake2.ts';
import { type CHashXOF, type HashXOF, type TArg, type TRet } from './utils.ts';
/**
* Ensure to use EITHER `key` OR `context`, not both.
*
* * `key`: 32-byte MAC key.
* * `context`: caller-encoded KDF context bytes. If your protocol defines a
* string context, encode it before passing it here.
* A good default format for the original context string is
* "[application] [commit timestamp] [purpose]".
*/
export type Blake3Opts = {
/** Desired digest length in bytes. The BLAKE3 spec allows 0..2^64-1 bytes of output. */
dkLen?: number;
/** Optional 32-byte MAC key. */
key?: Uint8Array;
/** Optional KDF context bytes. */
context?: Uint8Array;
};
/** Blake3 hash. Can be used as MAC and KDF with caller-encoded context bytes. */
export declare class _BLAKE3 extends _BLAKE2<_BLAKE3> implements HashXOF<_BLAKE3> {
readonly canXOF = true;
private chunkPos;
private chunksDone;
private flags;
private IV;
private state;
private stack;
private posOut;
private bufferOut32;
private bufferOut;
private chunkOut;
private enableXOF;
constructor(opts?: Blake3Opts, flags?: number);
protected get(): [];
protected set(): void;
private b2Compress;
protected compress(buf: Uint32Array, bufPos?: number, isLast?: boolean): void;
_cloneInto(to?: _BLAKE3): _BLAKE3;
destroy(): void;
private b2CompressOut;
protected finish(): void;
private writeInto;
xofInto(out: TArg<Uint8Array>): TRet<Uint8Array>;
xof(bytes: number): TRet<Uint8Array>;
digestInto(out: TArg<Uint8Array>): void;
digest(): TRet<Uint8Array>;
}
/**
* BLAKE3 hash function. Can be used as MAC and KDF.
* @param msg - message that would be hashed
* @param opts - Optional output, MAC, or KDF configuration. `key` must be
* exactly 32 bytes, `context` is caller-encoded bytes, and `dkLen` can be
* 0..2^64-1 via the XOF-backed output path. See {@link Blake3Opts}.
* @returns Digest bytes.
* @example
* Hash, MAC, or derive key material with BLAKE3.
* ```ts
* import { blake3 } from '@noble/hashes/blake3.js';
* import { utf8ToBytes } from '@noble/hashes/utils.js';
* const data = new Uint8Array(32);
* const hash = blake3(data);
* const mac = blake3(data, { key: new Uint8Array(32) });
* const kdf = blake3(data, { context: utf8ToBytes('application name') });
* ```
*/
export declare const blake3: TRet<CHashXOF<_BLAKE3, Blake3Opts>>;
//# sourceMappingURL=blake3.d.ts.map

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/**
* Blake3 fast hash is Blake2 with reduced security (round count). Can also be used as MAC & KDF.
*
* It is advertised as "the fastest cryptographic hash". However, it isn't true in JS.
* Why is this so slow? While it must be 6x faster than blake2b, perf diff is only 20%:
*
* * There is only 30% reduction in number of rounds from blake2s
* * Speed-up comes from tree structure, which is parallelized using SIMD & threading.
* These features are not present in JS, so we only get overhead from trees.
* * Parallelization only happens on 1024-byte chunks: there is no benefit for small inputs.
* * It is still possible to make it faster using: a) loop unrolling b) web workers c) wasm
* @module
*/
import { SHA256_IV } from "./_md.js";
import { fromBig } from "./_u64.js";
import { _BLAKE2, compress } from "./blake2.js";
// prettier-ignore
import { abytes, aexists, anumber, aoutput, clean, copyBytes, createHasher, swap32IfBE, u32, u8 } from "./utils.js";
// Constructor-time mode flags (`KEYED_HASH`, `DERIVE_*`) plus per-node tree
// flags (`CHUNK_*`, `PARENT`, `ROOT`).
const B3_Flags = {
CHUNK_START: 0b1,
CHUNK_END: 0b10,
PARENT: 0b100,
ROOT: 0b1000,
KEYED_HASH: 0b10000,
DERIVE_KEY_CONTEXT: 0b100000,
DERIVE_KEY_MATERIAL: 0b1000000,
};
// Default BLAKE3 IV, cloned from the shared BLAKE2s / SHA-256 IV basis.
const B3_IV = /* @__PURE__ */ SHA256_IV.slice();
// Seven 16-word rounds of BLAKE3 message schedule, generated by repeatedly
// permuting the identity row.
const B3_SIGMA = /* @__PURE__ */ (() => {
const Id = Array.from({ length: 16 }, (_, i) => i);
const permute = (arr) => [2, 6, 3, 10, 7, 0, 4, 13, 1, 11, 12, 5, 9, 14, 15, 8].map((i) => arr[i]);
const res = [];
for (let i = 0, v = Id; i < 7; i++, v = permute(v))
res.push(...v);
return Uint8Array.from(res);
})();
/** Blake3 hash. Can be used as MAC and KDF with caller-encoded context bytes. */
export class _BLAKE3 extends _BLAKE2 {
canXOF = true;
chunkPos = 0; // Position of current block in chunk
// How many chunks we already have; exact while this stays within
// JS's safe-integer range.
chunksDone = 0;
flags = 0 | 0;
IV;
state;
stack = [];
// Output
posOut = 0;
bufferOut32 = new Uint32Array(16);
bufferOut;
// Index of output chunk; exact while this stays within JS's
// safe-integer range.
chunkOut = 0;
enableXOF = true;
constructor(opts = {}, flags = 0) {
super(64, opts.dkLen === undefined ? 32 : opts.dkLen);
const { key, context } = opts;
const hasContext = context !== undefined;
if (key !== undefined) {
if (hasContext)
throw new Error('Only "key" or "context" can be specified at same time');
abytes(key, 32, 'key');
const k = copyBytes(key);
this.IV = u32(k);
swap32IfBE(this.IV);
this.flags = flags | B3_Flags.KEYED_HASH;
}
else if (hasContext) {
abytes(context, undefined, 'context');
const ctx = context;
const contextKey = new _BLAKE3({ dkLen: 32 }, B3_Flags.DERIVE_KEY_CONTEXT)
.update(ctx)
.digest();
this.IV = u32(contextKey);
swap32IfBE(this.IV);
this.flags = flags | B3_Flags.DERIVE_KEY_MATERIAL;
}
else {
this.IV = B3_IV.slice();
this.flags = flags;
}
this.state = this.IV.slice();
this.bufferOut = u8(this.bufferOut32);
}
// _BLAKE2's scalar-state hooks are unused here: BLAKE3 keeps its tree/XOF state in arrays and
// copies it directly in _cloneInto().
get() {
return [];
}
set() { }
// Truncated chunk/parent compression: seed v8..v15 as IV[0..3], t0, t1,
// block length, and flags, then keep only the first 8 output words.
b2Compress(counter, flags, buf, bufPos = 0) {
const { state: s, pos } = this;
const { h, l } = fromBig(BigInt(counter), true);
// prettier-ignore
const { v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15 } = compress(B3_SIGMA, bufPos, buf, 7, s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7], B3_IV[0], B3_IV[1], B3_IV[2], B3_IV[3], h, l, pos, flags);
s[0] = v0 ^ v8;
s[1] = v1 ^ v9;
s[2] = v2 ^ v10;
s[3] = v3 ^ v11;
s[4] = v4 ^ v12;
s[5] = v5 ^ v13;
s[6] = v6 ^ v14;
s[7] = v7 ^ v15;
}
compress(buf, bufPos = 0, isLast = false) {
// Compress last block
let flags = this.flags;
if (!this.chunkPos)
flags |= B3_Flags.CHUNK_START;
if (this.chunkPos === 15 || isLast)
flags |= B3_Flags.CHUNK_END;
if (!isLast)
this.pos = this.blockLen;
this.b2Compress(this.chunksDone, flags, buf, bufPos);
this.chunkPos += 1;
// If current block is last in chunk (16 blocks), then compress chunks
if (this.chunkPos === 16 || isLast) {
let chunk = this.state;
this.state = this.IV.slice();
// If not the last one, compress only when there are trailing zeros in chunk counter
// Chunks are used as a binary tree where the current stack is the path.
// Zero means the current leaf is finished and can be compressed.
// 1 (001) - leaf not finished (just push current chunk to stack)
// 2 (010) - leaf finished at depth=1 (merge with last elm on stack and push back)
// 3 (011) - last leaf not finished
// 4 (100) - leafs finished at depth=1 and depth=2
for (let last, chunks = this.chunksDone + 1; isLast || !(chunks & 1); chunks >>= 1) {
if (!(last = this.stack.pop()))
break;
this.buffer32.set(last, 0);
this.buffer32.set(chunk, 8);
this.pos = this.blockLen;
this.b2Compress(0, this.flags | B3_Flags.PARENT, this.buffer32, 0);
chunk = this.state;
this.state = this.IV.slice();
}
this.chunksDone++;
this.chunkPos = 0;
this.stack.push(chunk);
}
this.pos = 0;
}
_cloneInto(to) {
to = super._cloneInto(to);
const { IV, flags, state, chunkPos, posOut, chunkOut, stack, chunksDone } = this;
to.state.set(state.slice());
// Clone each CV stack entry by value so extending or destroying the clone
// cannot alias the source tree state.
to.stack = stack.map((i) => Uint32Array.from(i));
to.IV.set(IV);
to.flags = flags;
to.chunkPos = chunkPos;
to.chunksDone = chunksDone;
to.posOut = posOut;
to.chunkOut = chunkOut;
to.enableXOF = this.enableXOF;
to.bufferOut32.set(this.bufferOut32);
return to;
}
destroy() {
this.destroyed = true;
clean(this.state, this.buffer32, this.IV, this.bufferOut32);
clean(...this.stack);
}
// Root/XOF compression: rerun the same ROOT inputs with incrementing output
// counter `t` and materialize all 16 output words.
// Same as b2Compress, but doesn't modify state and returns 16 u32 array (instead of 8)
b2CompressOut() {
const { state: s, pos, flags, buffer32, bufferOut32: out32 } = this;
const { h, l } = fromBig(BigInt(this.chunkOut++));
swap32IfBE(buffer32);
// prettier-ignore
const { v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15 } = compress(B3_SIGMA, 0, buffer32, 7, s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7], B3_IV[0], B3_IV[1], B3_IV[2], B3_IV[3], l, h, pos, flags);
out32[0] = v0 ^ v8;
out32[1] = v1 ^ v9;
out32[2] = v2 ^ v10;
out32[3] = v3 ^ v11;
out32[4] = v4 ^ v12;
out32[5] = v5 ^ v13;
out32[6] = v6 ^ v14;
out32[7] = v7 ^ v15;
out32[8] = s[0] ^ v8;
out32[9] = s[1] ^ v9;
out32[10] = s[2] ^ v10;
out32[11] = s[3] ^ v11;
out32[12] = s[4] ^ v12;
out32[13] = s[5] ^ v13;
out32[14] = s[6] ^ v14;
out32[15] = s[7] ^ v15;
swap32IfBE(buffer32);
swap32IfBE(out32);
this.posOut = 0;
}
finish() {
if (this.finished)
return;
this.finished = true;
// Padding
clean(this.buffer.subarray(this.pos));
// Process last chunk
let flags = this.flags | B3_Flags.ROOT;
if (this.stack.length) {
// Finalize the current chunk first, then rerun the last parent
// compression as ROOT with t = 0 and b = 64.
flags |= B3_Flags.PARENT;
swap32IfBE(this.buffer32);
this.compress(this.buffer32, 0, true);
swap32IfBE(this.buffer32);
this.chunksDone = 0;
this.pos = this.blockLen;
}
else {
flags |= (!this.chunkPos ? B3_Flags.CHUNK_START : 0) | B3_Flags.CHUNK_END;
}
this.flags = flags;
this.b2CompressOut();
}
writeInto(out) {
aexists(this, false);
abytes(out);
this.finish();
const { blockLen, bufferOut } = this;
for (let pos = 0, len = out.length; pos < len;) {
if (this.posOut >= blockLen)
this.b2CompressOut();
const take = Math.min(blockLen - this.posOut, len - pos);
out.set(bufferOut.subarray(this.posOut, this.posOut + take), pos);
this.posOut += take;
pos += take;
}
return out;
}
xofInto(out) {
if (!this.enableXOF)
throw new Error('XOF is not possible after digest call');
return this.writeInto(out);
}
xof(bytes) {
anumber(bytes);
return this.xofInto(new Uint8Array(bytes));
}
digestInto(out) {
aoutput(out, this);
if (this.finished)
throw new Error('digest() was already called');
this.enableXOF = false;
// `aoutput(...)` allows oversized buffers; digestInto() must fill only the configured digest.
this.writeInto(out.subarray(0, this.outputLen));
this.destroy();
}
digest() {
const out = new Uint8Array(this.outputLen);
this.digestInto(out);
return out;
}
}
/**
* BLAKE3 hash function. Can be used as MAC and KDF.
* @param msg - message that would be hashed
* @param opts - Optional output, MAC, or KDF configuration. `key` must be
* exactly 32 bytes, `context` is caller-encoded bytes, and `dkLen` can be
* 0..2^64-1 via the XOF-backed output path. See {@link Blake3Opts}.
* @returns Digest bytes.
* @example
* Hash, MAC, or derive key material with BLAKE3.
* ```ts
* import { blake3 } from '@noble/hashes/blake3.js';
* import { utf8ToBytes } from '@noble/hashes/utils.js';
* const data = new Uint8Array(32);
* const hash = blake3(data);
* const mac = blake3(data, { key: new Uint8Array(32) });
* const kdf = blake3(data, { context: utf8ToBytes('application name') });
* ```
*/
export const blake3 = /* @__PURE__ */ createHasher((opts = {}) => new _BLAKE3(opts));
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import { type TRet } from './utils.ts';
/**
* Scrypt KDF with the fixed ESKDF policy tuple `{ N: 2^19, r: 8, p: 1, dkLen: 32 }`.
* @param password - user password string, UTF-8 encoded before entering RFC 7914
* @param salt - unique salt string, UTF-8 encoded before entering RFC 7914
* @returns Derived 32-byte key.
* @example
* Derive the 32-byte scrypt key used by ESKDF.
* ```ts
* scrypt('password123', 'user@example.com');
* ```
*/
export declare function scrypt(password: string, salt: string): TRet<Uint8Array>;
/**
* PBKDF2-HMAC-SHA256 with the fixed ESKDF policy tuple `{ sha256, c: 2^17, dkLen: 32 }`.
* @param password - user password string, UTF-8 encoded before entering PBKDF2-HMAC-SHA-256
* @param salt - unique salt string, UTF-8 encoded before entering PBKDF2-HMAC-SHA-256
* @returns Derived 32-byte key.
* @example
* Derive the 32-byte PBKDF2 key used by ESKDF.
* ```ts
* pbkdf2('password123', 'user@example.com');
* ```
*/
export declare function pbkdf2(password: string, salt: string): TRet<Uint8Array>;
/**
* Derives main seed. Takes a lot of time; prefer the higher-level `eskdf(...)`
* flow unless you specifically need the raw main seed.
* Derives the main seed by xor'ing two branches:
* the scrypt branch uses a `0x01` separator byte on username/password,
* and the PBKDF2 branch uses `0x02`.
* Username and password strings are encoded by the underlying KDFs after the
* local separator bytes are appended.
* @param username - account identifier used as public salt
* @param password - user password string
* @returns Main 32-byte seed for the account.
* @throws If the username or password length is invalid. {@link Error}
* @example
* Derive the main ESKDF seed from username and password.
* ```ts
* deriveMainSeed('example-user', 'example-password');
* ```
*/
export declare function deriveMainSeed(username: string, password: string): TRet<Uint8Array>;
type AccountID = number | string;
type OptsLength = {
keyLength: number;
};
type OptsMod = {
modulus: bigint;
};
type KeyOpts = undefined | OptsLength | OptsMod;
/** Not using classes because constructor cannot be async. */
export interface ESKDF {
/**
* Derives a child key. Child key will not be associated with any
* other child key because of properties of underlying KDF.
*
* @param protocol - 3-15 character protocol name
* @param accountId - numeric account identifier, or a string id for
* `password\d{0,3}`, `ssh`, `tor`, or `file`
* @param options - Optional child-key shaping parameters. See {@link KeyOpts}.
* @returns Derived child key bytes.
*/
deriveChildKey: (protocol: string, accountId: AccountID, options?: KeyOpts) => TRet<Uint8Array>;
/** Deletes the main seed from the ESKDF instance. */
expire: () => void;
/**
* Human-readable fingerprint: first 6 bytes of
* `deriveChildKey('fingerprint', 0)`, formatted as uppercase
* colon-separated hex.
*/
fingerprint: string;
}
/**
* ESKDF
* @param username - username, email, or identifier, min: 8 characters, should have enough entropy
* @param password - password, min: 8 characters, should have enough entropy
* @returns Frozen API that derives child keys and exposes the account fingerprint.
* @throws If the username or password length is invalid. {@link Error}
* @example
* Derive account-specific child keys from the main ESKDF seed.
* ```ts
* const kdf = await eskdf('example-university', 'beginning-new-example');
* const key = kdf.deriveChildKey('aes', 0);
* const fingerprint = kdf.fingerprint;
* kdf.expire();
* ```
*/
export declare function eskdf(username: string, password: string): Promise<TRet<ESKDF>>;
export {};
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/**
* Experimental KDF for AES.
* @module
*/
import { hkdf } from "./hkdf.js";
import { pbkdf2 as _pbkdf2 } from "./pbkdf2.js";
import { scrypt as _scrypt } from "./scrypt.js";
import { sha256 } from "./sha2.js";
import { abytes, bytesToHex, clean, createView, hexToBytes, kdfInputToBytes, } from "./utils.js";
// A tiny KDF for various applications like AES key-gen.
// Uses HKDF in a non-standard way, so it's not "KDF-secure", only "PRF-secure".
// Which is good enough: assume sha2-256 retained preimage resistance.
// Fixed ESKDF scrypt work factor: interactive-latency target with about 512 MiB RAM per derivation.
const SCRYPT_FACTOR = /* @__PURE__ */ (() => 2 ** 19)();
// Fixed ESKDF PBKDF2 work factor: CPU-only companion branch in the same rough
// interactive-latency range.
const PBKDF2_FACTOR = /* @__PURE__ */ (() => 2 ** 17)();
/**
* Scrypt KDF with the fixed ESKDF policy tuple `{ N: 2^19, r: 8, p: 1, dkLen: 32 }`.
* @param password - user password string, UTF-8 encoded before entering RFC 7914
* @param salt - unique salt string, UTF-8 encoded before entering RFC 7914
* @returns Derived 32-byte key.
* @example
* Derive the 32-byte scrypt key used by ESKDF.
* ```ts
* scrypt('password123', 'user@example.com');
* ```
*/
export function scrypt(password, salt) {
return _scrypt(password, salt, { N: SCRYPT_FACTOR, r: 8, p: 1, dkLen: 32 });
}
/**
* PBKDF2-HMAC-SHA256 with the fixed ESKDF policy tuple `{ sha256, c: 2^17, dkLen: 32 }`.
* @param password - user password string, UTF-8 encoded before entering PBKDF2-HMAC-SHA-256
* @param salt - unique salt string, UTF-8 encoded before entering PBKDF2-HMAC-SHA-256
* @returns Derived 32-byte key.
* @example
* Derive the 32-byte PBKDF2 key used by ESKDF.
* ```ts
* pbkdf2('password123', 'user@example.com');
* ```
*/
export function pbkdf2(password, salt) {
return _pbkdf2(sha256, password, salt, { c: PBKDF2_FACTOR, dkLen: 32 });
}
// Combines two 32-byte byte arrays into a fresh 32-byte result without aliasing either input.
function xor32(a, b) {
abytes(a, 32);
abytes(b, 32);
const arr = new Uint8Array(32);
for (let i = 0; i < 32; i++) {
arr[i] = a[i] ^ b[i];
}
return arr;
}
// All local string length checks are in JS UTF-16 code units, not UTF-8 bytes.
function strHasLength(str, min, max) {
return typeof str === 'string' && str.length >= min && str.length <= max;
}
/**
* Derives main seed. Takes a lot of time; prefer the higher-level `eskdf(...)`
* flow unless you specifically need the raw main seed.
* Derives the main seed by xor'ing two branches:
* the scrypt branch uses a `0x01` separator byte on username/password,
* and the PBKDF2 branch uses `0x02`.
* Username and password strings are encoded by the underlying KDFs after the
* local separator bytes are appended.
* @param username - account identifier used as public salt
* @param password - user password string
* @returns Main 32-byte seed for the account.
* @throws If the username or password length is invalid. {@link Error}
* @example
* Derive the main ESKDF seed from username and password.
* ```ts
* deriveMainSeed('example-user', 'example-password');
* ```
*/
export function deriveMainSeed(username, password) {
if (!strHasLength(username, 8, 255))
throw new Error('invalid username');
if (!strHasLength(password, 8, 255))
throw new Error('invalid password');
// Keep the protocol separators as the literal bytes 0x01 / 0x02 even after minification.
// Embedding them as non-printable characters directly can be awkward across
// JS tooling and environments.
const codes = { _1: 1, _2: 2 };
const sep = { s: String.fromCharCode(codes._1), p: String.fromCharCode(codes._2) };
const scr = scrypt(password + sep.s, username + sep.s);
const pbk = pbkdf2(password + sep.p, username + sep.p);
const res = xor32(scr, pbk);
clean(scr, pbk);
return res;
}
/**
* Converts protocol & accountId pair to HKDF params:
* `info` is UTF-8 protocol bytes, numeric ids become 4-byte BE `salt`,
* and string ids become UTF-8 `salt` bytes.
*/
function getSaltInfo(protocol, accountId = 0) {
// Note that length here also repeats two lines below
// We do an additional length check here to reduce the scope of DoS attacks
if (!(strHasLength(protocol, 3, 15) && /^[a-z0-9]{3,15}$/.test(protocol))) {
throw new Error('invalid protocol');
}
// Exact-match only: substring matches like `assh` / `mentor` must not widen the public whitelist.
const allowsStr = /^(password\d{0,3}|ssh|tor|file)$/.test(protocol);
let salt; // Assigned below: either 4-byte BE account bytes or UTF-8 account bytes.
if (typeof accountId === 'string') {
if (!allowsStr)
throw new Error('accountId must be a number');
if (!strHasLength(accountId, 1, 255))
throw new Error('accountId must be string of length 1..255');
salt = kdfInputToBytes(accountId);
}
else if (Number.isSafeInteger(accountId)) {
if (accountId < 0 || accountId > Math.pow(2, 32) - 1)
throw new Error('invalid accountId');
// Convert to Big Endian Uint32
salt = new Uint8Array(4);
createView(salt).setUint32(0, accountId, false);
}
else {
throw new Error('accountId must be a number' + (allowsStr ? ' or string' : ''));
}
const info = kdfInputToBytes(protocol);
return { salt, info };
}
// Local modulus-size helper, not a general bigint-byte-length primitive:
// `<= 128n` is rejected by ESKDF policy.
function countBytes(num) {
if (typeof num !== 'bigint' || num <= BigInt(128))
throw new Error('invalid number');
return Math.ceil(num.toString(2).length / 8);
}
/**
* Parses keyLength and modulus options to extract length of result key.
* If modulus is used, adds 64 bits to it per the FIPS 186-5 Appendix A.3.1 /
* A.4.1 extra-bits guidance.
*/
function getKeyLength(options) {
if (!options || typeof options !== 'object')
return 32;
const hasLen = 'keyLength' in options;
const hasMod = 'modulus' in options;
if (hasLen && hasMod)
throw new Error('cannot combine keyLength and modulus options');
if (!hasLen && !hasMod)
throw new Error('must have either keyLength or modulus option');
// FIPS 186-5 Appendix A.3.1 / A.4.1 calls for at least 64 extra bits.
const l = hasMod ? countBytes(options.modulus) + 8 : options.keyLength;
if (!(typeof l === 'number' && l >= 16 && l <= 8192))
throw new Error('invalid keyLength');
return l;
}
/**
* Converts key to bigint and divides it by modulus. Big Endian.
* Adapts FIPS 186-5 Appendix A.4.1: `getKeyLength()` already requested the
* extra 64-bit margin, and this step maps the result into `1..modulus-1`.
*/
function modReduceKey(key, modulus) {
const _1 = BigInt(1);
const num = BigInt('0x' + bytesToHex(key)); // check for ui8a, then bytesToNumber()
const res = (num % (modulus - _1)) + _1; // Remove 0 from output
if (res < _1)
throw new Error('expected positive number'); // Guard against bad values
// Strip the extra 64-bit margin that `getKeyLength()` requested
// for bias reduction.
const len = key.length - 8;
const hex = res.toString(16).padStart(len * 2, '0'); // numberToHex()
const bytes = hexToBytes(hex);
if (bytes.length !== len)
throw new Error('invalid length of result key');
return bytes;
}
/**
* ESKDF
* @param username - username, email, or identifier, min: 8 characters, should have enough entropy
* @param password - password, min: 8 characters, should have enough entropy
* @returns Frozen API that derives child keys and exposes the account fingerprint.
* @throws If the username or password length is invalid. {@link Error}
* @example
* Derive account-specific child keys from the main ESKDF seed.
* ```ts
* const kdf = await eskdf('example-university', 'beginning-new-example');
* const key = kdf.deriveChildKey('aes', 0);
* const fingerprint = kdf.fingerprint;
* kdf.expire();
* ```
*/
export async function eskdf(username, password) {
// We are using closure + object instead of class because
// we want to make `seed` non-accessible for any external function.
let seed = deriveMainSeed(username, password);
function deriveCK(protocol, accountId = 0, options) {
// Reject expired instances before deriving any HKDF inputs from the closure-held seed.
abytes(seed, 32);
const { salt, info } = getSaltInfo(protocol, accountId); // validate protocol & accountId
// Validate option shape and coarse length bounds;
// `hkdf()` still rejects non-integer lengths.
const keyLength = getKeyLength(options);
const key = hkdf(sha256, seed, salt, info, keyLength);
// Modulus has already been validated
return options && 'modulus' in options ? modReduceKey(key, options.modulus) : key;
}
function expire() {
// Overwrite the closure-held seed before dropping the reference.
if (seed)
seed.fill(1);
seed = undefined;
}
// prettier-ignore
const fingerprint = Array.from(deriveCK('fingerprint', 0))
.slice(0, 6)
.map((char) => char.toString(16).padStart(2, '0').toUpperCase())
.join(':');
return Object.freeze({ deriveChildKey: deriveCK, expire, fingerprint });
}
//# sourceMappingURL=eskdf.js.map

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import { type CHash, type TArg, type TRet } from './utils.ts';
/**
* HKDF-extract from spec. Less important part. `HKDF-Extract(IKM, salt) -> PRK`
* Arguments position differs from spec (IKM is first one, since it is not optional)
* Local validation only checks `hash`; `ikm` / `salt` byte validation is delegated to `hmac()`.
* @param hash - hash function that would be used (e.g. sha256)
* @param ikm - input keying material, the initial key
* @param salt - optional salt value (a non-secret random value)
* @returns Pseudorandom key derived from input keying material.
* @example
* Run the HKDF extract step.
* ```ts
* import { extract } from '@noble/hashes/hkdf.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* extract(sha256, new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]));
* ```
*/
export declare function extract(hash: TArg<CHash>, ikm: TArg<Uint8Array>, salt?: TArg<Uint8Array>): TRet<Uint8Array>;
/**
* HKDF-expand from the spec. The most important part. `HKDF-Expand(PRK, info, L) -> OKM`
* @param hash - hash function that would be used (e.g. sha256)
* @param prk - a pseudorandom key of at least HashLen octets
* (usually, the output from the extract step)
* @param info - optional context and application specific information (can be a zero-length string)
* @param length - length of output keying material in bytes.
* RFC 5869 §2.3 allows `0..255*HashLen`, so `0` returns an empty OKM.
* @returns Output keying material with the requested length.
* @throws If the requested output length exceeds the HKDF limit
* for the selected hash. {@link Error}
* @example
* Run the HKDF expand step.
* ```ts
* import { expand } from '@noble/hashes/hkdf.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* expand(sha256, new Uint8Array(32), new Uint8Array([1, 2, 3]), 16);
* ```
*/
export declare function expand(hash: TArg<CHash>, prk: TArg<Uint8Array>, info?: TArg<Uint8Array>, length?: number): TRet<Uint8Array>;
/**
* HKDF (RFC 5869): derive keys from an initial input.
* Combines hkdf_extract + hkdf_expand in one step
* @param hash - hash function that would be used (e.g. sha256)
* @param ikm - input keying material, the initial key
* @param salt - optional salt value (a non-secret random value)
* @param info - optional context and application specific information bytes
* @param length - length of output keying material in bytes.
* RFC 5869 §2.3 allows `0..255*HashLen`, so `0` returns an empty OKM.
* @returns Output keying material derived from the input key.
* @throws If the requested output length exceeds the HKDF limit
* for the selected hash. {@link Error}
* @example
* HKDF (RFC 5869): derive keys from an initial input.
* ```ts
* import { hkdf } from '@noble/hashes/hkdf.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* import { randomBytes, utf8ToBytes } from '@noble/hashes/utils.js';
* const inputKey = randomBytes(32);
* const salt = randomBytes(32);
* const info = utf8ToBytes('application-key');
* const okm = hkdf(sha256, inputKey, salt, info, 32);
* ```
*/
export declare const hkdf: (hash: TArg<CHash>, ikm: TArg<Uint8Array>, salt: TArg<Uint8Array | undefined>, info: TArg<Uint8Array | undefined>, length: number) => TRet<Uint8Array>;
//# sourceMappingURL=hkdf.d.ts.map

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/**
* HKDF (RFC 5869): extract + expand in one step.
* See {@link https://soatok.blog/2021/11/17/understanding-hkdf/}.
* @module
*/
import { hmac } from "./hmac.js";
import { abytes, ahash, anumber, clean } from "./utils.js";
/**
* HKDF-extract from spec. Less important part. `HKDF-Extract(IKM, salt) -> PRK`
* Arguments position differs from spec (IKM is first one, since it is not optional)
* Local validation only checks `hash`; `ikm` / `salt` byte validation is delegated to `hmac()`.
* @param hash - hash function that would be used (e.g. sha256)
* @param ikm - input keying material, the initial key
* @param salt - optional salt value (a non-secret random value)
* @returns Pseudorandom key derived from input keying material.
* @example
* Run the HKDF extract step.
* ```ts
* import { extract } from '@noble/hashes/hkdf.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* extract(sha256, new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]));
* ```
*/
export function extract(hash, ikm, salt) {
ahash(hash);
// NOTE: some libraries treat zero-length array as 'not provided';
// we don't, since we have undefined as 'not provided'
// https://github.com/RustCrypto/KDFs/issues/15
if (salt === undefined)
salt = new Uint8Array(hash.outputLen);
return hmac(hash, salt, ikm);
}
// Shared mutable scratch byte for the RFC 5869 block counter `N`.
// Safe to reuse because `expand()` is synchronous and resets it with `clean(...)` before returning.
const HKDF_COUNTER = /* @__PURE__ */ Uint8Array.of(0);
// Shared RFC 5869 empty string for both `info === undefined` and the first-block `T(0)` input.
const EMPTY_BUFFER = /* @__PURE__ */ Uint8Array.of();
/**
* HKDF-expand from the spec. The most important part. `HKDF-Expand(PRK, info, L) -> OKM`
* @param hash - hash function that would be used (e.g. sha256)
* @param prk - a pseudorandom key of at least HashLen octets
* (usually, the output from the extract step)
* @param info - optional context and application specific information (can be a zero-length string)
* @param length - length of output keying material in bytes.
* RFC 5869 §2.3 allows `0..255*HashLen`, so `0` returns an empty OKM.
* @returns Output keying material with the requested length.
* @throws If the requested output length exceeds the HKDF limit
* for the selected hash. {@link Error}
* @example
* Run the HKDF expand step.
* ```ts
* import { expand } from '@noble/hashes/hkdf.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* expand(sha256, new Uint8Array(32), new Uint8Array([1, 2, 3]), 16);
* ```
*/
export function expand(hash, prk, info, length = 32) {
ahash(hash);
anumber(length, 'length');
abytes(prk, undefined, 'prk');
const olen = hash.outputLen;
// RFC 5869 §2.3: PRK is "a pseudorandom key of at least HashLen octets".
if (prk.length < olen)
throw new Error('"prk" must be at least HashLen octets');
// RFC 5869 §2.3 only bounds `L` by `<= 255*HashLen`; `L=0` is valid and yields empty OKM.
if (length > 255 * olen)
throw new Error('Length must be <= 255*HashLen');
const blocks = Math.ceil(length / olen);
if (info === undefined)
info = EMPTY_BUFFER;
else
abytes(info, undefined, 'info');
// first L(ength) octets of T
const okm = new Uint8Array(blocks * olen);
// Re-use HMAC instance between blocks
const HMAC = hmac.create(hash, prk);
const HMACTmp = HMAC._cloneInto();
const T = new Uint8Array(HMAC.outputLen);
for (let counter = 0; counter < blocks; counter++) {
HKDF_COUNTER[0] = counter + 1;
// T(0) = empty string (zero length)
// T(N) = HMAC-Hash(PRK, T(N-1) | info | N)
HMACTmp.update(counter === 0 ? EMPTY_BUFFER : T)
.update(info)
.update(HKDF_COUNTER)
.digestInto(T);
okm.set(T, olen * counter);
HMAC._cloneInto(HMACTmp);
}
HMAC.destroy();
HMACTmp.destroy();
clean(T, HKDF_COUNTER);
return okm.slice(0, length);
}
/**
* HKDF (RFC 5869): derive keys from an initial input.
* Combines hkdf_extract + hkdf_expand in one step
* @param hash - hash function that would be used (e.g. sha256)
* @param ikm - input keying material, the initial key
* @param salt - optional salt value (a non-secret random value)
* @param info - optional context and application specific information bytes
* @param length - length of output keying material in bytes.
* RFC 5869 §2.3 allows `0..255*HashLen`, so `0` returns an empty OKM.
* @returns Output keying material derived from the input key.
* @throws If the requested output length exceeds the HKDF limit
* for the selected hash. {@link Error}
* @example
* HKDF (RFC 5869): derive keys from an initial input.
* ```ts
* import { hkdf } from '@noble/hashes/hkdf.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* import { randomBytes, utf8ToBytes } from '@noble/hashes/utils.js';
* const inputKey = randomBytes(32);
* const salt = randomBytes(32);
* const info = utf8ToBytes('application-key');
* const okm = hkdf(sha256, inputKey, salt, info, 32);
* ```
*/
export const hkdf = (hash, ikm, salt, info, length) => expand(hash, extract(hash, ikm, salt), info, length);
//# sourceMappingURL=hkdf.js.map

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/**
* HMAC: RFC2104 message authentication code.
* @module
*/
import { type CHash, type Hash, type TArg, type TRet } from './utils.ts';
/**
* Internal class for HMAC.
* Accepts any byte key, although RFC 2104 §3 recommends keys at least
* `HashLen` bytes long.
*/
export declare class _HMAC<T extends Hash<T>> implements Hash<_HMAC<T>> {
oHash: T;
iHash: T;
blockLen: number;
outputLen: number;
canXOF: boolean;
private finished;
private destroyed;
constructor(hash: TArg<CHash>, key: TArg<Uint8Array>);
update(buf: TArg<Uint8Array>): this;
digestInto(out: TArg<Uint8Array>): void;
digest(): TRet<Uint8Array>;
_cloneInto(to?: _HMAC<T>): _HMAC<T>;
clone(): _HMAC<T>;
destroy(): void;
}
/**
* HMAC: RFC2104 message authentication code.
* @param hash - function that would be used e.g. sha256
* @param key - authentication key bytes
* @param message - message bytes to authenticate
* @returns Authentication tag bytes.
* @example
* Compute an RFC 2104 HMAC.
* ```ts
* import { hmac } from '@noble/hashes/hmac.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const mac = hmac(sha256, new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]));
* ```
*/
type HmacFn = {
(hash: TArg<CHash>, key: TArg<Uint8Array>, message: TArg<Uint8Array>): TRet<Uint8Array>;
create(hash: TArg<CHash>, key: TArg<Uint8Array>): TRet<_HMAC<any>>;
};
export declare const hmac: TRet<HmacFn>;
export {};
//# sourceMappingURL=hmac.d.ts.map

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/**
* HMAC: RFC2104 message authentication code.
* @module
*/
import { abytes, aexists, ahash, aoutput, clean, } from "./utils.js";
/**
* Internal class for HMAC.
* Accepts any byte key, although RFC 2104 §3 recommends keys at least
* `HashLen` bytes long.
*/
export class _HMAC {
oHash;
iHash;
blockLen;
outputLen;
canXOF = false;
finished = false;
destroyed = false;
constructor(hash, key) {
ahash(hash);
abytes(key, undefined, 'key');
this.iHash = hash.create();
if (typeof this.iHash.update !== 'function')
throw new Error('Expected instance of class which extends utils.Hash');
this.blockLen = this.iHash.blockLen;
this.outputLen = this.iHash.outputLen;
const blockLen = this.blockLen;
const pad = new Uint8Array(blockLen);
// blockLen can be bigger than outputLen
pad.set(key.length > blockLen ? hash.create().update(key).digest() : key);
for (let i = 0; i < pad.length; i++)
pad[i] ^= 0x36;
this.iHash.update(pad);
// By doing update (processing of the first block) of the outer hash here,
// we can re-use it between multiple calls via clone.
this.oHash = hash.create();
// Undo internal XOR && apply outer XOR
for (let i = 0; i < pad.length; i++)
pad[i] ^= 0x36 ^ 0x5c;
this.oHash.update(pad);
clean(pad);
}
update(buf) {
aexists(this);
this.iHash.update(buf);
return this;
}
digestInto(out) {
aexists(this);
aoutput(out, this);
this.finished = true;
const buf = out.subarray(0, this.outputLen);
// Reuse the first outputLen bytes for the inner digest; the outer hash consumes them before
// overwriting that same prefix with the final tag, leaving any oversized tail untouched.
this.iHash.digestInto(buf);
this.oHash.update(buf);
this.oHash.digestInto(buf);
this.destroy();
}
digest() {
const out = new Uint8Array(this.oHash.outputLen);
this.digestInto(out);
return out;
}
_cloneInto(to) {
// Create new instance without calling constructor since the key
// is already in state and we don't know it.
to ||= Object.create(Object.getPrototypeOf(this), {});
const { oHash, iHash, finished, destroyed, blockLen, outputLen } = this;
to = to;
to.finished = finished;
to.destroyed = destroyed;
to.blockLen = blockLen;
to.outputLen = outputLen;
to.oHash = oHash._cloneInto(to.oHash);
to.iHash = iHash._cloneInto(to.iHash);
return to;
}
clone() {
return this._cloneInto();
}
destroy() {
this.destroyed = true;
this.oHash.destroy();
this.iHash.destroy();
}
}
export const hmac = /* @__PURE__ */ (() => {
const hmac_ = ((hash, key, message) => new _HMAC(hash, key).update(message).digest());
hmac_.create = (hash, key) => new _HMAC(hash, key);
return hmac_;
})();
//# sourceMappingURL=hmac.js.map

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/**
* Audited & minimal JS implementation of hash functions, MACs, and KDFs.
* Check out individual modules.
* @module
* @example
```js
import {
sha256, sha384, sha512, sha224, sha512_224, sha512_256
} from '@noble/hashes/sha2.js';
import {
sha3_224, sha3_256, sha3_384, sha3_512,
keccak_224, keccak_256, keccak_384, keccak_512,
shake128, shake256
} from '@noble/hashes/sha3.js';
import {
cshake128, cshake256,
turboshake128, turboshake256,
kt128, kt256,
kmac128, kmac256,
tuplehash256, parallelhash256,
keccakprg
} from '@noble/hashes/sha3-addons.js';
import { blake3 } from '@noble/hashes/blake3.js';
import { blake2b, blake2s } from '@noble/hashes/blake2.js';
import { hmac } from '@noble/hashes/hmac.js';
import { hkdf } from '@noble/hashes/hkdf.js';
import { pbkdf2, pbkdf2Async } from '@noble/hashes/pbkdf2.js';
import { scrypt, scryptAsync } from '@noble/hashes/scrypt.js';
import { md5, ripemd160, sha1 } from '@noble/hashes/legacy.js';
import * as utils from '@noble/hashes/utils.js';
```
*/
throw new Error('root module cannot be imported: import submodules instead. Check out README');
export {};
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/**
SHA1 (RFC 3174), MD5 (RFC 1321), and RIPEMD160 legacy, weak hash functions.
RFC 2286 only covers HMAC-RIPEMD160 wrapper material and test vectors,
not the base RIPEMD-160 compression spec.
Don't use them in a new protocol. What "weak" means:
- Collisions can be made with 2^18 effort in MD5, 2^60 in SHA1, 2^80 in RIPEMD160.
- No practical pre-image attacks (only theoretical, 2^123.4)
- HMAC seems kinda ok: https://www.rfc-editor.org/rfc/rfc6151
* @module
*/
import { HashMD } from './_md.ts';
import { type CHash, type TRet } from './utils.ts';
/** Internal SHA1 legacy hash class. */
export declare class _SHA1 extends HashMD<_SHA1> {
private A;
private B;
private C;
private D;
private E;
constructor();
protected get(): [number, number, number, number, number];
protected set(A: number, B: number, C: number, D: number, E: number): void;
protected process(view: DataView, offset: number): void;
protected roundClean(): void;
destroy(): void;
}
/**
* SHA1 (RFC 3174) legacy hash function. It was cryptographically broken.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA1.
* ```ts
* sha1(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const sha1: TRet<CHash>;
/** Internal MD5 legacy hash class. */
export declare class _MD5 extends HashMD<_MD5> {
private A;
private B;
private C;
private D;
constructor();
protected get(): [number, number, number, number];
protected set(A: number, B: number, C: number, D: number): void;
protected process(view: DataView, offset: number): void;
protected roundClean(): void;
destroy(): void;
}
/**
* MD5 (RFC 1321) legacy hash function. It was cryptographically broken.
* MD5 architecture is similar to SHA1, with some differences:
* - Reduced output length: 16 bytes (128 bit) instead of 20
* - 64 rounds, instead of 80
* - Little-endian: could be faster, but will require more code
* - Non-linear index selection: huge speed-up for unroll
* - Per round constants: more memory accesses, additional speed-up for unroll
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with MD5.
* ```ts
* md5(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const md5: TRet<CHash>;
/**
* Internal RIPEMD-160 legacy hash class.
* RFC 2286 only adds HMAC-RIPEMD160 material, not the core hash specification.
*/
export declare class _RIPEMD160 extends HashMD<_RIPEMD160> {
private h0;
private h1;
private h2;
private h3;
private h4;
constructor();
protected get(): [number, number, number, number, number];
protected set(h0: number, h1: number, h2: number, h3: number, h4: number): void;
protected process(view: DataView, offset: number): void;
protected roundClean(): void;
destroy(): void;
}
/**
* RIPEMD-160 - a legacy hash function from 1990s.
* RFC 2286 only covers HMAC-RIPEMD160 test material; the links below point
* at the base RIPEMD-160 references.
* * {@link https://homes.esat.kuleuven.be/~bosselae/ripemd160.html}
* * {@link https://homes.esat.kuleuven.be/~bosselae/ripemd160/pdf/AB-9601/AB-9601.pdf}
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with RIPEMD-160.
* ```ts
* ripemd160(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const ripemd160: TRet<CHash>;
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/**
SHA1 (RFC 3174), MD5 (RFC 1321), and RIPEMD160 legacy, weak hash functions.
RFC 2286 only covers HMAC-RIPEMD160 wrapper material and test vectors,
not the base RIPEMD-160 compression spec.
Don't use them in a new protocol. What "weak" means:
- Collisions can be made with 2^18 effort in MD5, 2^60 in SHA1, 2^80 in RIPEMD160.
- No practical pre-image attacks (only theoretical, 2^123.4)
- HMAC seems kinda ok: https://www.rfc-editor.org/rfc/rfc6151
* @module
*/
import { Chi, HashMD, Maj } from "./_md.js";
import { clean, createHasher, rotl } from "./utils.js";
/** Initial SHA-1 state from RFC 3174 §6.1. */
const SHA1_IV = /* @__PURE__ */ Uint32Array.from([
0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0,
]);
// Reusable 80-word SHA-1 message schedule buffer.
const SHA1_W = /* @__PURE__ */ new Uint32Array(80);
/** Internal SHA1 legacy hash class. */
export class _SHA1 extends HashMD {
A = SHA1_IV[0] | 0;
B = SHA1_IV[1] | 0;
C = SHA1_IV[2] | 0;
D = SHA1_IV[3] | 0;
E = SHA1_IV[4] | 0;
constructor() {
super(64, 20, 8, false);
}
get() {
const { A, B, C, D, E } = this;
return [A, B, C, D, E];
}
set(A, B, C, D, E) {
this.A = A | 0;
this.B = B | 0;
this.C = C | 0;
this.D = D | 0;
this.E = E | 0;
}
process(view, offset) {
for (let i = 0; i < 16; i++, offset += 4)
SHA1_W[i] = view.getUint32(offset, false);
for (let i = 16; i < 80; i++)
SHA1_W[i] = rotl(SHA1_W[i - 3] ^ SHA1_W[i - 8] ^ SHA1_W[i - 14] ^ SHA1_W[i - 16], 1);
// Compression function main loop, 80 rounds
let { A, B, C, D, E } = this;
for (let i = 0; i < 80; i++) {
let F, K;
if (i < 20) {
F = Chi(B, C, D);
K = 0x5a827999;
}
else if (i < 40) {
F = B ^ C ^ D;
K = 0x6ed9eba1;
}
else if (i < 60) {
F = Maj(B, C, D);
K = 0x8f1bbcdc;
}
else {
F = B ^ C ^ D;
K = 0xca62c1d6;
}
const T = (rotl(A, 5) + F + E + K + SHA1_W[i]) | 0;
E = D;
D = C;
C = rotl(B, 30);
B = A;
A = T;
}
// Add the compressed chunk to the current hash value
A = (A + this.A) | 0;
B = (B + this.B) | 0;
C = (C + this.C) | 0;
D = (D + this.D) | 0;
E = (E + this.E) | 0;
this.set(A, B, C, D, E);
}
roundClean() {
clean(SHA1_W);
}
destroy() {
// HashMD callers route post-destroy usability through `destroyed`; zeroizing alone still leaves
// update()/digest() callable on reused instances.
this.destroyed = true;
this.set(0, 0, 0, 0, 0);
clean(this.buffer);
}
}
/**
* SHA1 (RFC 3174) legacy hash function. It was cryptographically broken.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA1.
* ```ts
* sha1(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha1 = /* @__PURE__ */ createHasher(() => new _SHA1());
/** RFC 1321 `T[i]` uses `floor(2^32 * abs(sin(i)))`; this is the shared `2^32` scale factor. */
const p32 = /* @__PURE__ */ Math.pow(2, 32);
/** RFC 1321 `T[1..64]` table. */
const K = /* @__PURE__ */ Array.from({ length: 64 }, (_, i) => Math.floor(p32 * Math.abs(Math.sin(i + 1))));
/** MD5 initial state from RFC 1321, stored as 4 u32 words. */
const MD5_IV = /* @__PURE__ */ SHA1_IV.slice(0, 4);
// Reusable 16-word MD5 message block buffer.
const MD5_W = /* @__PURE__ */ new Uint32Array(16);
/** Internal MD5 legacy hash class. */
export class _MD5 extends HashMD {
A = MD5_IV[0] | 0;
B = MD5_IV[1] | 0;
C = MD5_IV[2] | 0;
D = MD5_IV[3] | 0;
constructor() {
super(64, 16, 8, true);
}
get() {
const { A, B, C, D } = this;
return [A, B, C, D];
}
set(A, B, C, D) {
this.A = A | 0;
this.B = B | 0;
this.C = C | 0;
this.D = D | 0;
}
process(view, offset) {
for (let i = 0; i < 16; i++, offset += 4)
MD5_W[i] = view.getUint32(offset, true);
// Compression function main loop, 64 rounds
let { A, B, C, D } = this;
for (let i = 0; i < 64; i++) {
let F, g, s;
if (i < 16) {
F = Chi(B, C, D);
g = i;
s = [7, 12, 17, 22];
}
else if (i < 32) {
// RFC 1321 round 2 uses G(B,C,D) = (B & D) | (C & ~D), which is `Chi(D, B, C)`.
F = Chi(D, B, C);
g = (5 * i + 1) % 16;
s = [5, 9, 14, 20];
}
else if (i < 48) {
F = B ^ C ^ D;
g = (3 * i + 5) % 16;
s = [4, 11, 16, 23];
}
else {
F = C ^ (B | ~D);
g = (7 * i) % 16;
s = [6, 10, 15, 21];
}
F = F + A + K[i] + MD5_W[g];
A = D;
D = C;
C = B;
B = B + rotl(F, s[i % 4]);
}
// Add the compressed chunk to the current hash value
A = (A + this.A) | 0;
B = (B + this.B) | 0;
C = (C + this.C) | 0;
D = (D + this.D) | 0;
this.set(A, B, C, D);
}
roundClean() {
clean(MD5_W);
}
destroy() {
// HashMD callers route post-destroy usability through `destroyed`; zeroizing alone still leaves
// update()/digest() callable on reused instances.
this.destroyed = true;
this.set(0, 0, 0, 0);
clean(this.buffer);
}
}
/**
* MD5 (RFC 1321) legacy hash function. It was cryptographically broken.
* MD5 architecture is similar to SHA1, with some differences:
* - Reduced output length: 16 bytes (128 bit) instead of 20
* - 64 rounds, instead of 80
* - Little-endian: could be faster, but will require more code
* - Non-linear index selection: huge speed-up for unroll
* - Per round constants: more memory accesses, additional speed-up for unroll
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with MD5.
* ```ts
* md5(new Uint8Array([97, 98, 99]));
* ```
*/
export const md5 = /* @__PURE__ */ createHasher(() => new _MD5());
// RIPEMD-160
// Permutation repeatedly applied to derive the later RIPEMD-160 message-order tables.
const Rho160 = /* @__PURE__ */ Uint8Array.from([
7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
]);
const Id160 = /* @__PURE__ */ (() => Uint8Array.from(new Array(16).fill(0).map((_, i) => i)))();
const Pi160 = /* @__PURE__ */ (() => Id160.map((i) => (9 * i + 5) % 16))();
// Five left/right message-word orderings for the RIPEMD-160 dual-lane rounds.
const idxLR = /* @__PURE__ */ (() => {
const L = [Id160];
const R = [Pi160];
const res = [L, R];
for (let i = 0; i < 4; i++)
for (let j of res)
j.push(j[i].map((k) => Rho160[k]));
return res;
})();
const idxL = /* @__PURE__ */ (() => idxLR[0])();
const idxR = /* @__PURE__ */ (() => idxLR[1])();
// const [idxL, idxR] = idxLR;
// Base per-group shift table before the left/right message-order permutations are applied.
const shifts160 = /* @__PURE__ */ [
[11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8],
[12, 13, 11, 15, 6, 9, 9, 7, 12, 15, 11, 13, 7, 8, 7, 7],
[13, 15, 14, 11, 7, 7, 6, 8, 13, 14, 13, 12, 5, 5, 6, 9],
[14, 11, 12, 14, 8, 6, 5, 5, 15, 12, 15, 14, 9, 9, 8, 6],
[15, 12, 13, 13, 9, 5, 8, 6, 14, 11, 12, 11, 8, 6, 5, 5],
].map((i) => Uint8Array.from(i));
const shiftsL160 = /* @__PURE__ */ idxL.map((idx, i) => idx.map((j) => shifts160[i][j]));
const shiftsR160 = /* @__PURE__ */ idxR.map((idx, i) => idx.map((j) => shifts160[i][j]));
// Five left-lane additive constants for RIPEMD-160.
const Kl160 = /* @__PURE__ */ Uint32Array.from([
0x00000000, 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xa953fd4e,
]);
// Five right-lane additive constants for RIPEMD-160.
const Kr160 = /* @__PURE__ */ Uint32Array.from([
0x50a28be6, 0x5c4dd124, 0x6d703ef3, 0x7a6d76e9, 0x00000000,
]);
// Called `f()` in the spec; valid `group` values are 0..4, and out-of-range
// inputs currently fall through to the group-4 branch.
function ripemd_f(group, x, y, z) {
if (group === 0)
return x ^ y ^ z;
if (group === 1)
return (x & y) | (~x & z);
if (group === 2)
return (x | ~y) ^ z;
if (group === 3)
return (x & z) | (y & ~z);
return x ^ (y | ~z);
}
// Reusable 16-word RIPEMD-160 message block buffer.
const BUF_160 = /* @__PURE__ */ new Uint32Array(16);
/**
* Internal RIPEMD-160 legacy hash class.
* RFC 2286 only adds HMAC-RIPEMD160 material, not the core hash specification.
*/
export class _RIPEMD160 extends HashMD {
h0 = 0x67452301 | 0;
h1 = 0xefcdab89 | 0;
h2 = 0x98badcfe | 0;
h3 = 0x10325476 | 0;
h4 = 0xc3d2e1f0 | 0;
constructor() {
super(64, 20, 8, true);
}
get() {
const { h0, h1, h2, h3, h4 } = this;
return [h0, h1, h2, h3, h4];
}
set(h0, h1, h2, h3, h4) {
this.h0 = h0 | 0;
this.h1 = h1 | 0;
this.h2 = h2 | 0;
this.h3 = h3 | 0;
this.h4 = h4 | 0;
}
process(view, offset) {
for (let i = 0; i < 16; i++, offset += 4)
BUF_160[i] = view.getUint32(offset, true);
// prettier-ignore
let al = this.h0 | 0, ar = al, bl = this.h1 | 0, br = bl, cl = this.h2 | 0, cr = cl, dl = this.h3 | 0, dr = dl, el = this.h4 | 0, er = el;
// Instead of iterating 0 to 80, we split it into 5 groups
// And use the groups in constants, functions, etc. Much simpler
for (let group = 0; group < 5; group++) {
const rGroup = 4 - group;
const hbl = Kl160[group], hbr = Kr160[group]; // prettier-ignore
const rl = idxL[group], rr = idxR[group]; // prettier-ignore
const sl = shiftsL160[group], sr = shiftsR160[group]; // prettier-ignore
for (let i = 0; i < 16; i++) {
const tl = (rotl(al + ripemd_f(group, bl, cl, dl) + BUF_160[rl[i]] + hbl, sl[i]) + el) | 0;
al = el, el = dl, dl = rotl(cl, 10) | 0, cl = bl, bl = tl; // prettier-ignore
}
// 2 loops are 10% faster
for (let i = 0; i < 16; i++) {
const tr = (rotl(ar + ripemd_f(rGroup, br, cr, dr) + BUF_160[rr[i]] + hbr, sr[i]) + er) | 0;
ar = er, er = dr, dr = rotl(cr, 10) | 0, cr = br, br = tr; // prettier-ignore
}
}
// Add the compressed chunk to the current hash value
// Final recombination cross-adds the left/right lane accumulators into the next h0..h4 order.
this.set((this.h1 + cl + dr) | 0, (this.h2 + dl + er) | 0, (this.h3 + el + ar) | 0, (this.h4 + al + br) | 0, (this.h0 + bl + cr) | 0);
}
roundClean() {
clean(BUF_160);
}
destroy() {
this.destroyed = true;
clean(this.buffer);
this.set(0, 0, 0, 0, 0);
}
}
/**
* RIPEMD-160 - a legacy hash function from 1990s.
* RFC 2286 only covers HMAC-RIPEMD160 test material; the links below point
* at the base RIPEMD-160 references.
* * {@link https://homes.esat.kuleuven.be/~bosselae/ripemd160.html}
* * {@link https://homes.esat.kuleuven.be/~bosselae/ripemd160/pdf/AB-9601/AB-9601.pdf}
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with RIPEMD-160.
* ```ts
* ripemd160(new Uint8Array([97, 98, 99]));
* ```
*/
export const ripemd160 = /* @__PURE__ */ createHasher(() => new _RIPEMD160());
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{
"name": "@noble/hashes",
"version": "2.2.0",
"description": "Audited & minimal 0-dependency JS implementation of SHA, RIPEMD, BLAKE, HMAC, HKDF, PBKDF & Scrypt",
"files": [
"*.js",
"*.js.map",
"*.d.ts",
"*.d.ts.map",
"src"
],
"devDependencies": {
"@paulmillr/jsbt": "0.5.0",
"@types/node": "25.3.0",
"fast-check": "4.2.0",
"prettier": "3.6.2",
"typescript": "6.0.2"
},
"scripts": {
"bench": "node test/benchmark/noble.ts",
"bench:compare": "MBENCH_DIMS='algorithm,buffer,library' node test/benchmark/hashes.ts",
"bench:compare-scrypt": "MBENCH_DIMS='iters,library' MBENCH_FILTER='async' node test/benchmark/scrypt.ts",
"bench:install": "cd test/benchmark; npm install",
"build": "tsc",
"build:release": "npx --no @paulmillr/jsbt esbuild test/build",
"check": "npm run check:readme && npm run check:treeshake && npm run check:jsdoc",
"check:readme": "npx --no @paulmillr/jsbt readme package.json",
"check:treeshake": "npx --no @paulmillr/jsbt treeshake package.json test/build/out-treeshake",
"check:jsdoc": "npx --no @paulmillr/jsbt tsdoc package.json",
"build:clean": "rm *.{js,js.map,d.ts,d.ts.map} 2> /dev/null",
"format": "prettier --write 'src/**/*.{js,ts}' 'test/**/*.{js,ts}'",
"test": "node test/index.ts",
"test:bun": "bun test/index.ts",
"test:deno": "deno --allow-env --allow-read test/index.ts",
"test:node20": "cd test; npx tsc; node compiled/test/index.js",
"test:dos": "node test/slow-dos.test.ts",
"test:slow": "node test/slow-big.test.ts",
"test:acvp": "node test/slow-acvp.test.ts",
"test:kdf": "node test/slow-kdf.test.ts"
},
"exports": {
".": "./index.js",
"./_md.js": "./_md.js",
"./argon2.js": "./argon2.js",
"./blake1.js": "./blake1.js",
"./blake2.js": "./blake2.js",
"./blake3.js": "./blake3.js",
"./eskdf.js": "./eskdf.js",
"./hkdf.js": "./hkdf.js",
"./hmac.js": "./hmac.js",
"./legacy.js": "./legacy.js",
"./pbkdf2.js": "./pbkdf2.js",
"./scrypt.js": "./scrypt.js",
"./sha2.js": "./sha2.js",
"./sha3-addons.js": "./sha3-addons.js",
"./sha3.js": "./sha3.js",
"./webcrypto.js": "./webcrypto.js",
"./utils.js": "./utils.js"
},
"engines": {
"node": ">= 20.19.0"
},
"keywords": [
"sha1",
"sha2",
"sha3",
"blake",
"blake2",
"blake3",
"hmac",
"hkdf",
"pbkdf2",
"scrypt",
"sha256",
"sha512",
"keccak",
"ripemd160",
"kdf",
"hash",
"cryptography",
"security",
"noble"
],
"homepage": "https://paulmillr.com/noble/",
"funding": "https://paulmillr.com/funding/",
"repository": {
"type": "git",
"url": "git+https://github.com/paulmillr/noble-hashes.git"
},
"type": "module",
"main": "index.js",
"module": "index.js",
"types": "index.d.ts",
"sideEffects": false,
"author": "Paul Miller (https://paulmillr.com)",
"license": "MIT"
}

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import { type CHash, type KDFInput, type TArg, type TRet } from './utils.ts';
/**
* PBKDF2 options:
* * c: iterations, should probably be higher than 100_000
* * dkLen: desired length of derived key in bytes, must be `>= 1` per RFC 8018 §5.2
* * asyncTick: max time in ms for which async function can block execution
*/
export type Pbkdf2Opt = {
/** Iteration count. Higher values increase CPU cost. */
c: number;
/** Desired derived key length in bytes, must be `>= 1` per RFC 8018 §5.2. */
dkLen?: number;
/** Max scheduler block time in milliseconds for the async variant. */
asyncTick?: number;
};
/**
* PBKDF2-HMAC: RFC 8018 key derivation function.
* @param hash - hash function that would be used e.g. sha256
* @param password - password from which a derived key is generated;
* JS string inputs are UTF-8 encoded first
* @param salt - cryptographic salt; JS string inputs are UTF-8 encoded first
* @param opts - PBKDF2 work factor and output settings. `dkLen`, if provided,
* must be `>= 1` per RFC 8018 §5.2. See {@link Pbkdf2Opt}.
* @returns Derived key bytes.
* @throws If the PBKDF2 iteration count or derived-key settings are invalid. {@link Error}
* @example
* PBKDF2-HMAC: RFC 2898 key derivation function.
* ```ts
* import { pbkdf2 } from '@noble/hashes/pbkdf2.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const key = pbkdf2(sha256, 'password', 'salt', { dkLen: 32, c: Math.pow(2, 18) });
* ```
*/
export declare function pbkdf2(hash: TArg<CHash>, password: TArg<KDFInput>, salt: TArg<KDFInput>, opts: TArg<Pbkdf2Opt>): TRet<Uint8Array>;
/**
* PBKDF2-HMAC: RFC 8018 key derivation function. Async version.
* @param hash - hash function that would be used e.g. sha256
* @param password - password from which a derived key is generated;
* JS string inputs are UTF-8 encoded first
* @param salt - cryptographic salt; JS string inputs are UTF-8 encoded first
* @param opts - PBKDF2 work factor and output settings. `dkLen`, if provided,
* must be `>= 1` per RFC 8018 §5.2. `asyncTick` is only a local
* scheduler-yield knob for this JS wrapper, not part of RFC 8018.
* See {@link Pbkdf2Opt}.
* @returns Promise resolving to derived key bytes.
* @throws If the PBKDF2 iteration count or derived-key settings are invalid. {@link Error}
* @example
* PBKDF2-HMAC: RFC 2898 key derivation function.
* ```ts
* import { pbkdf2Async } from '@noble/hashes/pbkdf2.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const key = await pbkdf2Async(sha256, 'password', 'salt', { dkLen: 32, c: 500_000 });
* ```
*/
export declare function pbkdf2Async(hash: TArg<CHash>, password: TArg<KDFInput>, salt: TArg<KDFInput>, opts: TArg<Pbkdf2Opt>): Promise<TRet<Uint8Array>>;
//# sourceMappingURL=pbkdf2.d.ts.map

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/**
* PBKDF (RFC 2898). Can be used to create a key from password and salt.
* @module
*/
import { hmac } from "./hmac.js";
// prettier-ignore
import { ahash, anumber, asyncLoop, checkOpts, clean, createView, kdfInputToBytes } from "./utils.js";
// Common start and end for sync/async functions
function pbkdf2Init(hash, _password, _salt, _opts) {
ahash(hash);
const opts = checkOpts({ dkLen: 32, asyncTick: 10 }, _opts);
const { c, dkLen, asyncTick } = opts;
anumber(c, 'c');
anumber(dkLen, 'dkLen');
anumber(asyncTick, 'asyncTick');
if (c < 1)
throw new Error('iterations (c) must be >= 1');
// RFC 8018 §5.2 defines `dkLen` as "a positive integer".
if (dkLen < 1)
throw new Error('"dkLen" must be >= 1');
// RFC 8018 §5.2 step 1 requires rejecting oversize `dkLen`
// before allocating the destination buffer.
if (dkLen > (2 ** 32 - 1) * hash.outputLen)
throw new Error('derived key too long');
const password = kdfInputToBytes(_password, 'password');
const salt = kdfInputToBytes(_salt, 'salt');
// DK = PBKDF2(PRF, Password, Salt, c, dkLen);
const DK = new Uint8Array(dkLen);
// U1 = PRF(Password, Salt + INT_32_BE(i))
const PRF = hmac.create(hash, password);
// Cache PRF(P, S || ...) prefix state so each block only appends INT_32_BE(i).
const PRFSalt = PRF._cloneInto().update(salt);
return { c, dkLen, asyncTick, DK, PRF, PRFSalt };
}
function pbkdf2Output(PRF, PRFSalt, DK, prfW, u) {
// Shared sync/async cleanup point: wipe transient PRF state
// while preserving the derived key buffer.
PRF.destroy();
PRFSalt.destroy();
if (prfW)
prfW.destroy();
clean(u);
return DK;
}
/**
* PBKDF2-HMAC: RFC 8018 key derivation function.
* @param hash - hash function that would be used e.g. sha256
* @param password - password from which a derived key is generated;
* JS string inputs are UTF-8 encoded first
* @param salt - cryptographic salt; JS string inputs are UTF-8 encoded first
* @param opts - PBKDF2 work factor and output settings. `dkLen`, if provided,
* must be `>= 1` per RFC 8018 §5.2. See {@link Pbkdf2Opt}.
* @returns Derived key bytes.
* @throws If the PBKDF2 iteration count or derived-key settings are invalid. {@link Error}
* @example
* PBKDF2-HMAC: RFC 2898 key derivation function.
* ```ts
* import { pbkdf2 } from '@noble/hashes/pbkdf2.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const key = pbkdf2(sha256, 'password', 'salt', { dkLen: 32, c: Math.pow(2, 18) });
* ```
*/
export function pbkdf2(hash, password, salt, opts) {
const { c, dkLen, DK, PRF, PRFSalt } = pbkdf2Init(hash, password, salt, opts);
let prfW; // Working copy
const arr = new Uint8Array(4);
const view = createView(arr);
const u = new Uint8Array(PRF.outputLen);
// DK = T1 + T2 + ⋯ + Tdklen/hlen
for (let ti = 1, pos = 0; pos < dkLen; ti++, pos += PRF.outputLen) {
// Ti = F(Password, Salt, c, i)
// The last Ti view can be shorter than hLen, which applies
// RFC 8018 §5.2 step 4's T_l<0..r-1> truncation without extra copies.
const Ti = DK.subarray(pos, pos + PRF.outputLen);
view.setInt32(0, ti, false);
// F(Password, Salt, c, i) = U1 ^ U2 ^ ⋯ ^ Uc
// U1 = PRF(Password, Salt + INT_32_BE(i))
(prfW = PRFSalt._cloneInto(prfW)).update(arr).digestInto(u);
Ti.set(u.subarray(0, Ti.length));
for (let ui = 1; ui < c; ui++) {
// Uc = PRF(Password, Uc−1)
PRF._cloneInto(prfW).update(u).digestInto(u);
for (let i = 0; i < Ti.length; i++)
Ti[i] ^= u[i];
}
}
return pbkdf2Output(PRF, PRFSalt, DK, prfW, u);
}
/**
* PBKDF2-HMAC: RFC 8018 key derivation function. Async version.
* @param hash - hash function that would be used e.g. sha256
* @param password - password from which a derived key is generated;
* JS string inputs are UTF-8 encoded first
* @param salt - cryptographic salt; JS string inputs are UTF-8 encoded first
* @param opts - PBKDF2 work factor and output settings. `dkLen`, if provided,
* must be `>= 1` per RFC 8018 §5.2. `asyncTick` is only a local
* scheduler-yield knob for this JS wrapper, not part of RFC 8018.
* See {@link Pbkdf2Opt}.
* @returns Promise resolving to derived key bytes.
* @throws If the PBKDF2 iteration count or derived-key settings are invalid. {@link Error}
* @example
* PBKDF2-HMAC: RFC 2898 key derivation function.
* ```ts
* import { pbkdf2Async } from '@noble/hashes/pbkdf2.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const key = await pbkdf2Async(sha256, 'password', 'salt', { dkLen: 32, c: 500_000 });
* ```
*/
export async function pbkdf2Async(hash, password, salt, opts) {
const { c, dkLen, asyncTick, DK, PRF, PRFSalt } = pbkdf2Init(hash, password, salt, opts);
let prfW; // Working copy
const arr = new Uint8Array(4);
const view = createView(arr);
const u = new Uint8Array(PRF.outputLen);
// DK = T1 + T2 + ⋯ + Tdklen/hlen
for (let ti = 1, pos = 0; pos < dkLen; ti++, pos += PRF.outputLen) {
// Ti = F(Password, Salt, c, i)
// The last Ti view can be shorter than hLen, which applies
// RFC 8018 §5.2 step 4's T_l<0..r-1> truncation without extra copies.
const Ti = DK.subarray(pos, pos + PRF.outputLen);
view.setInt32(0, ti, false);
// F(Password, Salt, c, i) = U1 ^ U2 ^ ⋯ ^ Uc
// U1 = PRF(Password, Salt + INT_32_BE(i))
(prfW = PRFSalt._cloneInto(prfW)).update(arr).digestInto(u);
Ti.set(u.subarray(0, Ti.length));
await asyncLoop(c - 1, asyncTick, () => {
// Uc = PRF(Password, Uc−1)
PRF._cloneInto(prfW).update(u).digestInto(u);
for (let i = 0; i < Ti.length; i++)
Ti[i] ^= u[i];
});
}
return pbkdf2Output(PRF, PRFSalt, DK, prfW, u);
}
//# sourceMappingURL=pbkdf2.js.map

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import { type KDFInput, type TArg, type TRet } from './utils.ts';
/**
* Scrypt options:
* - `N` is cpu/mem work factor (power of 2 e.g. `2**18`)
* - `r` is block size (8 is common), fine-tunes sequential memory read size and performance
* - `p` is parallelization factor (1 is common)
* - `dkLen` is output key length in bytes e.g. 32, and must be `>= 1` per RFC 7914 §2.
* - `asyncTick` - (default: 10) max time in ms for which async function can block execution
* - `maxmem` - (default: `1024 ** 3 + 1024` aka 1GB+1KB). A limit that the app could use for scrypt
* - `onProgress` - callback function that would be executed for progress report
*/
export type ScryptOpts = {
/** CPU and memory work factor. Must be a power of two. */
N: number;
/** Block size parameter. */
r: number;
/** Parallelization factor. */
p: number;
/** Desired derived key length in bytes, must be `>= 1` per RFC 7914 §2. */
dkLen?: number;
/** Max scheduler block time in milliseconds for the async variant. */
asyncTick?: number;
/** Maximum temporary memory budget in bytes. */
maxmem?: number;
/**
* Optional progress callback invoked during long-running derivations.
* param progress - completion fraction in the `0..1` range
*/
onProgress?: (progress: number) => void;
};
/**
* Scrypt KDF from RFC 7914. See {@link ScryptOpts}.
* @param password - password or key material to derive from;
* JS string inputs are UTF-8 encoded first
* @param salt - unique salt bytes or string; JS string inputs are UTF-8 encoded first
* @param opts - Scrypt cost and memory parameters. `dkLen`, if provided,
* must be `>= 1` per RFC 7914 §2. See {@link ScryptOpts}.
* @returns Derived key bytes.
* @throws If the Scrypt cost, memory, or callback options are invalid. {@link Error}
* @example
* Derive a key with scrypt.
* ```ts
* scrypt('password', 'salt', { N: 2**18, r: 8, p: 1, dkLen: 32 });
* ```
*/
export declare function scrypt(password: TArg<KDFInput>, salt: TArg<KDFInput>, opts: TArg<ScryptOpts>): TRet<Uint8Array>;
/**
* Scrypt KDF from RFC 7914. Async version. See {@link ScryptOpts}.
* @param password - password or key material to derive from;
* JS string inputs are UTF-8 encoded first
* @param salt - unique salt bytes or string; JS string inputs are UTF-8 encoded first
* @param opts - Scrypt cost and memory parameters. `dkLen`, if provided,
* must be `>= 1` per RFC 7914 §2. `asyncTick` is only a local
* scheduler-yield control for this JS wrapper, not part of RFC 7914.
* See {@link ScryptOpts}.
* @returns Promise resolving to derived key bytes.
* @throws If the Scrypt cost, memory, or callback options are invalid. {@link Error}
* @example
* Derive a key with scrypt asynchronously.
* ```ts
* await scryptAsync('password', 'salt', { N: 2**18, r: 8, p: 1, dkLen: 32 });
* ```
*/
export declare function scryptAsync(password: TArg<KDFInput>, salt: TArg<KDFInput>, opts: TArg<ScryptOpts>): Promise<TRet<Uint8Array>>;
//# sourceMappingURL=scrypt.d.ts.map

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electron/node_modules/@noble/hashes/scrypt.d.ts.map generated vendored Normal file
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257
electron/node_modules/@noble/hashes/scrypt.js generated vendored Normal file
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/**
* RFC 7914 Scrypt KDF. Can be used to create a key from password and salt.
* @module
*/
import { pbkdf2 } from "./pbkdf2.js";
import { sha256 } from "./sha2.js";
// prettier-ignore
import { anumber, asyncLoop, checkOpts, clean, rotl, swap32IfBE, u32 } from "./utils.js";
// The main Scrypt loop: uses Salsa extensively.
// Six versions of the function were tried, this is the fastest one.
// RFC 7914 §3 / §4 step 2 applies Salsa20/8 to one 16-word (64-byte) block
// after xor'ing two such blocks.
// The local `y*` snapshot keeps the xor input stable even when `out` aliases `prev` or `input`.
// prettier-ignore
function XorAndSalsa(prev, pi, input, ii, out, oi) {
// Based on https://cr.yp.to/salsa20.html and RFC 7914's Salsa20/8 core.
// Xor blocks
let y00 = prev[pi++] ^ input[ii++], y01 = prev[pi++] ^ input[ii++];
let y02 = prev[pi++] ^ input[ii++], y03 = prev[pi++] ^ input[ii++];
let y04 = prev[pi++] ^ input[ii++], y05 = prev[pi++] ^ input[ii++];
let y06 = prev[pi++] ^ input[ii++], y07 = prev[pi++] ^ input[ii++];
let y08 = prev[pi++] ^ input[ii++], y09 = prev[pi++] ^ input[ii++];
let y10 = prev[pi++] ^ input[ii++], y11 = prev[pi++] ^ input[ii++];
let y12 = prev[pi++] ^ input[ii++], y13 = prev[pi++] ^ input[ii++];
let y14 = prev[pi++] ^ input[ii++], y15 = prev[pi++] ^ input[ii++];
// Save state to temporary variables (salsa)
let x00 = y00, x01 = y01, x02 = y02, x03 = y03, x04 = y04, x05 = y05, x06 = y06, x07 = y07, x08 = y08, x09 = y09, x10 = y10, x11 = y11, x12 = y12, x13 = y13, x14 = y14, x15 = y15;
// Main loop (salsa)
for (let i = 0; i < 8; i += 2) {
x04 ^= rotl(x00 + x12 | 0, 7);
x08 ^= rotl(x04 + x00 | 0, 9);
x12 ^= rotl(x08 + x04 | 0, 13);
x00 ^= rotl(x12 + x08 | 0, 18);
x09 ^= rotl(x05 + x01 | 0, 7);
x13 ^= rotl(x09 + x05 | 0, 9);
x01 ^= rotl(x13 + x09 | 0, 13);
x05 ^= rotl(x01 + x13 | 0, 18);
x14 ^= rotl(x10 + x06 | 0, 7);
x02 ^= rotl(x14 + x10 | 0, 9);
x06 ^= rotl(x02 + x14 | 0, 13);
x10 ^= rotl(x06 + x02 | 0, 18);
x03 ^= rotl(x15 + x11 | 0, 7);
x07 ^= rotl(x03 + x15 | 0, 9);
x11 ^= rotl(x07 + x03 | 0, 13);
x15 ^= rotl(x11 + x07 | 0, 18);
x01 ^= rotl(x00 + x03 | 0, 7);
x02 ^= rotl(x01 + x00 | 0, 9);
x03 ^= rotl(x02 + x01 | 0, 13);
x00 ^= rotl(x03 + x02 | 0, 18);
x06 ^= rotl(x05 + x04 | 0, 7);
x07 ^= rotl(x06 + x05 | 0, 9);
x04 ^= rotl(x07 + x06 | 0, 13);
x05 ^= rotl(x04 + x07 | 0, 18);
x11 ^= rotl(x10 + x09 | 0, 7);
x08 ^= rotl(x11 + x10 | 0, 9);
x09 ^= rotl(x08 + x11 | 0, 13);
x10 ^= rotl(x09 + x08 | 0, 18);
x12 ^= rotl(x15 + x14 | 0, 7);
x13 ^= rotl(x12 + x15 | 0, 9);
x14 ^= rotl(x13 + x12 | 0, 13);
x15 ^= rotl(x14 + x13 | 0, 18);
}
// Write output (salsa)
out[oi++] = (y00 + x00) | 0;
out[oi++] = (y01 + x01) | 0;
out[oi++] = (y02 + x02) | 0;
out[oi++] = (y03 + x03) | 0;
out[oi++] = (y04 + x04) | 0;
out[oi++] = (y05 + x05) | 0;
out[oi++] = (y06 + x06) | 0;
out[oi++] = (y07 + x07) | 0;
out[oi++] = (y08 + x08) | 0;
out[oi++] = (y09 + x09) | 0;
out[oi++] = (y10 + x10) | 0;
out[oi++] = (y11 + x11) | 0;
out[oi++] = (y12 + x12) | 0;
out[oi++] = (y13 + x13) | 0;
out[oi++] = (y14 + x14) | 0;
out[oi++] = (y15 + x15) | 0;
}
function BlockMix(input, ii, out, oi, r) {
// The block B is `r` 128-byte chunks, i.e. `2r` 16-word (64-byte) Salsa blocks.
let head = oi + 0;
let tail = oi + 16 * r;
for (let i = 0; i < 16; i++)
out[tail + i] = input[ii + (2 * r - 1) * 16 + i]; // X ← B[2r−1]
for (let i = 0; i < r; i++, head += 16, ii += 16) {
// RFC 7914 §4 step 3 outputs `Y[0], Y[2], ...` first, then `Y[1], Y[3], ...`;
// `head` and `tail` lay out those even/odd halves in place.
XorAndSalsa(out, tail, input, ii, out, head); // head[i] = Salsa(blockIn[2*i] ^ tail[i-1])
if (i > 0)
tail += 16; // First iteration overwrites tmp value in tail
// tail[i] = Salsa(blockIn[2*i+1] ^ head[i])
XorAndSalsa(out, head, input, (ii += 16), out, tail);
}
}
// Common prologue and epilogue for sync/async functions
function scryptInit(password, salt, _opts) {
// Maxmem - 1GB+1KB by default
const opts = checkOpts({
dkLen: 32,
asyncTick: 10,
maxmem: 1024 ** 3 + 1024,
}, _opts);
const { N, r, p, dkLen, asyncTick, maxmem, onProgress } = opts;
anumber(N, 'N');
anumber(r, 'r');
anumber(p, 'p');
anumber(dkLen, 'dkLen');
anumber(asyncTick, 'asyncTick');
anumber(maxmem, 'maxmem');
if (onProgress !== undefined && typeof onProgress !== 'function')
throw new Error('progressCb must be a function');
const blockSize = 128 * r;
const blockSize32 = blockSize / 4;
// Max N is 2^32 (Integrify is 32-bit).
// Real limit can be 2^22: some JS engines limit Uint8Array to 4GB.
// Spec check `N >= 2^(blockSize / 8)` is not done for compat with popular libs,
// which used incorrect r: 1, p: 8. Also, the check seems to be a spec error:
// https://www.rfc-editor.org/errata_search.php?rfc=7914
const pow32 = Math.pow(2, 32);
if (N <= 1 || (N & (N - 1)) !== 0 || N > pow32)
throw new Error('"N" expected a power of 2, and 2^1 <= N <= 2^32');
if (p < 1 || p > ((pow32 - 1) * 32) / blockSize)
throw new Error('"p" expected integer 1..((2^32 - 1) * 32) / (128 * r)');
// RFC 7914 §2 defines `dkLen` as a positive integer.
if (dkLen < 1 || dkLen > (pow32 - 1) * 32)
throw new Error('"dkLen" expected integer 1..(2^32 - 1) * 32');
// Include the shared `tmp` scratch block so `maxmem` matches noble's actual temporary allocation.
// Node requires more headroom here, so this accounting is intentionally noble-specific.
const memUsed = blockSize * (N + p + 1);
if (memUsed > maxmem)
throw new Error('"maxmem" limit was hit: memUsed(128*r*(N+p+1))=' + memUsed + ', maxmem=' + maxmem);
// [B0...Bp−1] ← PBKDF2HMAC-SHA256(Passphrase, Salt, 1, blockSize*ParallelizationFactor)
// Since it has only one iteration there is no reason to use async variant
const B = pbkdf2(sha256, password, salt, { c: 1, dkLen: blockSize * p });
const B32 = u32(B);
// Re-used between parallel iterations. Array(iterations) of B
const V = u32(new Uint8Array(blockSize * N));
const tmp = u32(new Uint8Array(blockSize));
let blockMixCb = () => { };
if (onProgress) {
const totalBlockMix = 2 * N * p;
// Invoke callback if progress changes from 10.01 to 10.02
// Allows to draw smooth progress bar on up to 8K screen
const callbackPer = Math.max(Math.floor(totalBlockMix / 10000), 1);
let blockMixCnt = 0;
blockMixCb = () => {
blockMixCnt++;
if (onProgress && (!(blockMixCnt % callbackPer) || blockMixCnt === totalBlockMix))
onProgress(blockMixCnt / totalBlockMix);
};
}
return { N, r, p, dkLen, blockSize32, V, B32, B, tmp, blockMixCb, asyncTick };
}
function scryptOutput(password, dkLen, B, V, tmp) {
// Shared final PBKDF2-and-cleanup step: keep the derived key, wipe the scrypt workspace.
const res = pbkdf2(sha256, password, B, { c: 1, dkLen });
clean(B, V, tmp);
return res;
}
/**
* Scrypt KDF from RFC 7914. See {@link ScryptOpts}.
* @param password - password or key material to derive from;
* JS string inputs are UTF-8 encoded first
* @param salt - unique salt bytes or string; JS string inputs are UTF-8 encoded first
* @param opts - Scrypt cost and memory parameters. `dkLen`, if provided,
* must be `>= 1` per RFC 7914 §2. See {@link ScryptOpts}.
* @returns Derived key bytes.
* @throws If the Scrypt cost, memory, or callback options are invalid. {@link Error}
* @example
* Derive a key with scrypt.
* ```ts
* scrypt('password', 'salt', { N: 2**18, r: 8, p: 1, dkLen: 32 });
* ```
*/
export function scrypt(password, salt, opts) {
const { N, r, p, dkLen, blockSize32, V, B32, B, tmp, blockMixCb } = scryptInit(password, salt, opts);
swap32IfBE(B32);
for (let pi = 0; pi < p; pi++) {
const Pi = blockSize32 * pi;
for (let i = 0; i < blockSize32; i++)
V[i] = B32[Pi + i]; // V[0] = B[i]
for (let i = 0, pos = 0; i < N - 1; i++) {
BlockMix(V, pos, V, (pos += blockSize32), r); // V[i] = BlockMix(V[i-1]);
blockMixCb();
}
BlockMix(V, (N - 1) * blockSize32, B32, Pi, r); // Process last element
blockMixCb();
for (let i = 0; i < N; i++) {
// First u32 of the last 64-byte block (u32 is LE)
// RFC 7914 Integerify(X) uses the whole last 64-byte block, but mod N
// only depends on the low word here because N is a power of two and
// this implementation caps N at 2^32.
// & (N - 1) is % N as N is a power of 2, N & (N - 1) = 0 is checked
// above; >>> 0 for unsigned, input fits in u32.
const j = (B32[Pi + blockSize32 - 16] & (N - 1)) >>> 0; // j = Integrify(X) % iterations
// tmp = B ^ V[j]
for (let k = 0; k < blockSize32; k++)
tmp[k] = B32[Pi + k] ^ V[j * blockSize32 + k];
BlockMix(tmp, 0, B32, Pi, r); // B = BlockMix(B ^ V[j])
blockMixCb();
}
}
swap32IfBE(B32);
return scryptOutput(password, dkLen, B, V, tmp);
}
/**
* Scrypt KDF from RFC 7914. Async version. See {@link ScryptOpts}.
* @param password - password or key material to derive from;
* JS string inputs are UTF-8 encoded first
* @param salt - unique salt bytes or string; JS string inputs are UTF-8 encoded first
* @param opts - Scrypt cost and memory parameters. `dkLen`, if provided,
* must be `>= 1` per RFC 7914 §2. `asyncTick` is only a local
* scheduler-yield control for this JS wrapper, not part of RFC 7914.
* See {@link ScryptOpts}.
* @returns Promise resolving to derived key bytes.
* @throws If the Scrypt cost, memory, or callback options are invalid. {@link Error}
* @example
* Derive a key with scrypt asynchronously.
* ```ts
* await scryptAsync('password', 'salt', { N: 2**18, r: 8, p: 1, dkLen: 32 });
* ```
*/
export async function scryptAsync(password, salt, opts) {
const { N, r, p, dkLen, blockSize32, V, B32, B, tmp, blockMixCb, asyncTick } = scryptInit(password, salt, opts);
swap32IfBE(B32);
for (let pi = 0; pi < p; pi++) {
const Pi = blockSize32 * pi;
for (let i = 0; i < blockSize32; i++)
V[i] = B32[Pi + i]; // V[0] = B[i]
let pos = 0;
await asyncLoop(N - 1, asyncTick, () => {
BlockMix(V, pos, V, (pos += blockSize32), r); // V[i] = BlockMix(V[i-1]);
blockMixCb();
});
BlockMix(V, (N - 1) * blockSize32, B32, Pi, r); // Process last element
blockMixCb();
await asyncLoop(N, asyncTick, () => {
// First u32 of the last 64-byte block (u32 is LE)
// RFC 7914 Integerify(X) uses the whole last 64-byte block, but mod N
// only depends on the low word here because N is a power of two and
// this implementation caps N at 2^32.
// & (N - 1) is % N as N is a power of 2, N & (N - 1) = 0 is checked
// above; >>> 0 for unsigned, input fits in u32.
const j = (B32[Pi + blockSize32 - 16] & (N - 1)) >>> 0; // j = Integrify(X) % iterations
// tmp = B ^ V[j]
for (let k = 0; k < blockSize32; k++)
tmp[k] = B32[Pi + k] ^ V[j * blockSize32 + k];
BlockMix(tmp, 0, B32, Pi, r); // B = BlockMix(B ^ V[j])
blockMixCb();
});
}
swap32IfBE(B32);
return scryptOutput(password, dkLen, B, V, tmp);
}
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/**
* SHA2 hash function. A.k.a. sha256, sha384, sha512, sha512_224, sha512_256.
* SHA256 is the fastest hash implementable in JS, even faster than Blake3.
* Check out {@link https://www.rfc-editor.org/rfc/rfc4634 | RFC 4634} and
* {@link https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf | FIPS 180-4}.
* @module
*/
import { HashMD } from './_md.ts';
import { type CHash, type TRet } from './utils.ts';
/** Internal SHA-224 / SHA-256 compression engine from RFC 6234 §6.2. */
declare abstract class SHA2_32B<T extends SHA2_32B<T>> extends HashMD<T> {
protected abstract A: number;
protected abstract B: number;
protected abstract C: number;
protected abstract D: number;
protected abstract E: number;
protected abstract F: number;
protected abstract G: number;
protected abstract H: number;
constructor(outputLen: number);
protected get(): [number, number, number, number, number, number, number, number];
protected set(A: number, B: number, C: number, D: number, E: number, F: number, G: number, H: number): void;
protected process(view: DataView, offset: number): void;
protected roundClean(): void;
destroy(): void;
}
/** Internal SHA-256 hash class grounded in RFC 6234 §6.2. */
export declare class _SHA256 extends SHA2_32B<_SHA256> {
protected A: number;
protected B: number;
protected C: number;
protected D: number;
protected E: number;
protected F: number;
protected G: number;
protected H: number;
constructor();
}
/** Internal SHA-224 hash class grounded in RFC 6234 §6.2 and §8.5. */
export declare class _SHA224 extends SHA2_32B<_SHA224> {
protected A: number;
protected B: number;
protected C: number;
protected D: number;
protected E: number;
protected F: number;
protected G: number;
protected H: number;
constructor();
}
/** Internal SHA-384 / SHA-512 compression engine from RFC 6234 §6.4. */
declare abstract class SHA2_64B<T extends SHA2_64B<T>> extends HashMD<T> {
protected abstract Ah: number;
protected abstract Al: number;
protected abstract Bh: number;
protected abstract Bl: number;
protected abstract Ch: number;
protected abstract Cl: number;
protected abstract Dh: number;
protected abstract Dl: number;
protected abstract Eh: number;
protected abstract El: number;
protected abstract Fh: number;
protected abstract Fl: number;
protected abstract Gh: number;
protected abstract Gl: number;
protected abstract Hh: number;
protected abstract Hl: number;
constructor(outputLen: number);
protected get(): [
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number,
number
];
protected set(Ah: number, Al: number, Bh: number, Bl: number, Ch: number, Cl: number, Dh: number, Dl: number, Eh: number, El: number, Fh: number, Fl: number, Gh: number, Gl: number, Hh: number, Hl: number): void;
protected process(view: DataView, offset: number): void;
protected roundClean(): void;
destroy(): void;
}
/** Internal SHA-512 hash class grounded in RFC 6234 §6.3 and §6.4. */
export declare class _SHA512 extends SHA2_64B<_SHA512> {
protected Ah: number;
protected Al: number;
protected Bh: number;
protected Bl: number;
protected Ch: number;
protected Cl: number;
protected Dh: number;
protected Dl: number;
protected Eh: number;
protected El: number;
protected Fh: number;
protected Fl: number;
protected Gh: number;
protected Gl: number;
protected Hh: number;
protected Hl: number;
constructor();
}
/** Internal SHA-384 hash class grounded in RFC 6234 §6.3 and §6.4. */
export declare class _SHA384 extends SHA2_64B<_SHA384> {
protected Ah: number;
protected Al: number;
protected Bh: number;
protected Bl: number;
protected Ch: number;
protected Cl: number;
protected Dh: number;
protected Dl: number;
protected Eh: number;
protected El: number;
protected Fh: number;
protected Fl: number;
protected Gh: number;
protected Gl: number;
protected Hh: number;
protected Hl: number;
constructor();
}
/** Internal SHA-512/224 hash class using the derived `T224_IV` and the shared
* RFC 6234 §6.4 compression engine. */
export declare class _SHA512_224 extends SHA2_64B<_SHA512_224> {
protected Ah: number;
protected Al: number;
protected Bh: number;
protected Bl: number;
protected Ch: number;
protected Cl: number;
protected Dh: number;
protected Dl: number;
protected Eh: number;
protected El: number;
protected Fh: number;
protected Fl: number;
protected Gh: number;
protected Gl: number;
protected Hh: number;
protected Hl: number;
constructor();
}
/** Internal SHA-512/256 hash class using the derived `T256_IV` and the shared
* RFC 6234 §6.4 compression engine. */
export declare class _SHA512_256 extends SHA2_64B<_SHA512_256> {
protected Ah: number;
protected Al: number;
protected Bh: number;
protected Bl: number;
protected Ch: number;
protected Cl: number;
protected Dh: number;
protected Dl: number;
protected Eh: number;
protected El: number;
protected Fh: number;
protected Fl: number;
protected Gh: number;
protected Gl: number;
protected Hh: number;
protected Hl: number;
constructor();
}
/**
* SHA2-256 hash function from RFC 4634. In JS it's the fastest: even faster than Blake3. Some info:
*
* - Trying 2^128 hashes would get 50% chance of collision, using birthday attack.
* - BTC network is doing 2^70 hashes/sec (2^95 hashes/year) as per 2025.
* - Each sha256 hash is executing 2^18 bit operations.
* - Good 2024 ASICs can do 200Th/sec with 3500 watts of power, corresponding to 2^36 hashes/joule.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-256.
* ```ts
* sha256(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const sha256: TRet<CHash<_SHA256>>;
/**
* SHA2-224 hash function from RFC 4634.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-224.
* ```ts
* sha224(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const sha224: TRet<CHash<_SHA224>>;
/**
* SHA2-512 hash function from RFC 4634.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-512.
* ```ts
* sha512(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const sha512: TRet<CHash<_SHA512>>;
/**
* SHA2-384 hash function from RFC 4634.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-384.
* ```ts
* sha384(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const sha384: TRet<CHash<_SHA384>>;
/**
* SHA2-512/256 "truncated" hash function, with improved resistance to length extension attacks.
* See the paper on {@link https://eprint.iacr.org/2010/548.pdf | truncated SHA512}.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-512/256.
* ```ts
* sha512_256(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const sha512_256: TRet<CHash<_SHA512_256>>;
/**
* SHA2-512/224 "truncated" hash function, with improved resistance to length extension attacks.
* See the paper on {@link https://eprint.iacr.org/2010/548.pdf | truncated SHA512}.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-512/224.
* ```ts
* sha512_224(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const sha512_224: TRet<CHash<_SHA512_224>>;
export {};
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/**
* SHA2 hash function. A.k.a. sha256, sha384, sha512, sha512_224, sha512_256.
* SHA256 is the fastest hash implementable in JS, even faster than Blake3.
* Check out {@link https://www.rfc-editor.org/rfc/rfc4634 | RFC 4634} and
* {@link https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf | FIPS 180-4}.
* @module
*/
import { Chi, HashMD, Maj, SHA224_IV, SHA256_IV, SHA384_IV, SHA512_IV } from "./_md.js";
import * as u64 from "./_u64.js";
import { clean, createHasher, oidNist, rotr } from "./utils.js";
/**
* SHA-224 / SHA-256 round constants from RFC 6234 §5.1: the first 32 bits
* of the cube roots of the first 64 primes (2..311).
*/
// prettier-ignore
const SHA256_K = /* @__PURE__ */ Uint32Array.from([
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
]);
/** Reusable SHA-224 / SHA-256 message schedule buffer `W_t` from RFC 6234 §6.2 step 1. */
const SHA256_W = /* @__PURE__ */ new Uint32Array(64);
/** Internal SHA-224 / SHA-256 compression engine from RFC 6234 §6.2. */
class SHA2_32B extends HashMD {
constructor(outputLen) {
super(64, outputLen, 8, false);
}
get() {
const { A, B, C, D, E, F, G, H } = this;
return [A, B, C, D, E, F, G, H];
}
// prettier-ignore
set(A, B, C, D, E, F, G, H) {
this.A = A | 0;
this.B = B | 0;
this.C = C | 0;
this.D = D | 0;
this.E = E | 0;
this.F = F | 0;
this.G = G | 0;
this.H = H | 0;
}
process(view, offset) {
// Extend the first 16 words into the remaining 48 words w[16..63] of the message schedule array
for (let i = 0; i < 16; i++, offset += 4)
SHA256_W[i] = view.getUint32(offset, false);
for (let i = 16; i < 64; i++) {
const W15 = SHA256_W[i - 15];
const W2 = SHA256_W[i - 2];
const s0 = rotr(W15, 7) ^ rotr(W15, 18) ^ (W15 >>> 3);
const s1 = rotr(W2, 17) ^ rotr(W2, 19) ^ (W2 >>> 10);
SHA256_W[i] = (s1 + SHA256_W[i - 7] + s0 + SHA256_W[i - 16]) | 0;
}
// Compression function main loop, 64 rounds
let { A, B, C, D, E, F, G, H } = this;
for (let i = 0; i < 64; i++) {
const sigma1 = rotr(E, 6) ^ rotr(E, 11) ^ rotr(E, 25);
const T1 = (H + sigma1 + Chi(E, F, G) + SHA256_K[i] + SHA256_W[i]) | 0;
const sigma0 = rotr(A, 2) ^ rotr(A, 13) ^ rotr(A, 22);
const T2 = (sigma0 + Maj(A, B, C)) | 0;
H = G;
G = F;
F = E;
E = (D + T1) | 0;
D = C;
C = B;
B = A;
A = (T1 + T2) | 0;
}
// Add the compressed chunk to the current hash value
A = (A + this.A) | 0;
B = (B + this.B) | 0;
C = (C + this.C) | 0;
D = (D + this.D) | 0;
E = (E + this.E) | 0;
F = (F + this.F) | 0;
G = (G + this.G) | 0;
H = (H + this.H) | 0;
this.set(A, B, C, D, E, F, G, H);
}
roundClean() {
clean(SHA256_W);
}
destroy() {
// HashMD callers route post-destroy usability through `destroyed`; zeroizing alone still leaves
// update()/digest() callable on reused instances.
this.destroyed = true;
this.set(0, 0, 0, 0, 0, 0, 0, 0);
clean(this.buffer);
}
}
/** Internal SHA-256 hash class grounded in RFC 6234 §6.2. */
export class _SHA256 extends SHA2_32B {
// We cannot use array here since array allows indexing by variable
// which means optimizer/compiler cannot use registers.
A = SHA256_IV[0] | 0;
B = SHA256_IV[1] | 0;
C = SHA256_IV[2] | 0;
D = SHA256_IV[3] | 0;
E = SHA256_IV[4] | 0;
F = SHA256_IV[5] | 0;
G = SHA256_IV[6] | 0;
H = SHA256_IV[7] | 0;
constructor() {
super(32);
}
}
/** Internal SHA-224 hash class grounded in RFC 6234 §6.2 and §8.5. */
export class _SHA224 extends SHA2_32B {
A = SHA224_IV[0] | 0;
B = SHA224_IV[1] | 0;
C = SHA224_IV[2] | 0;
D = SHA224_IV[3] | 0;
E = SHA224_IV[4] | 0;
F = SHA224_IV[5] | 0;
G = SHA224_IV[6] | 0;
H = SHA224_IV[7] | 0;
constructor() {
super(28);
}
}
// SHA2-512 is slower than sha256 in js because u64 operations are slow.
// SHA-384 / SHA-512 round constants from RFC 6234 §5.2:
// 80 full 64-bit words split into high/low halves.
// prettier-ignore
const K512 = /* @__PURE__ */ (() => u64.split([
'0x428a2f98d728ae22', '0x7137449123ef65cd', '0xb5c0fbcfec4d3b2f', '0xe9b5dba58189dbbc',
'0x3956c25bf348b538', '0x59f111f1b605d019', '0x923f82a4af194f9b', '0xab1c5ed5da6d8118',
'0xd807aa98a3030242', '0x12835b0145706fbe', '0x243185be4ee4b28c', '0x550c7dc3d5ffb4e2',
'0x72be5d74f27b896f', '0x80deb1fe3b1696b1', '0x9bdc06a725c71235', '0xc19bf174cf692694',
'0xe49b69c19ef14ad2', '0xefbe4786384f25e3', '0x0fc19dc68b8cd5b5', '0x240ca1cc77ac9c65',
'0x2de92c6f592b0275', '0x4a7484aa6ea6e483', '0x5cb0a9dcbd41fbd4', '0x76f988da831153b5',
'0x983e5152ee66dfab', '0xa831c66d2db43210', '0xb00327c898fb213f', '0xbf597fc7beef0ee4',
'0xc6e00bf33da88fc2', '0xd5a79147930aa725', '0x06ca6351e003826f', '0x142929670a0e6e70',
'0x27b70a8546d22ffc', '0x2e1b21385c26c926', '0x4d2c6dfc5ac42aed', '0x53380d139d95b3df',
'0x650a73548baf63de', '0x766a0abb3c77b2a8', '0x81c2c92e47edaee6', '0x92722c851482353b',
'0xa2bfe8a14cf10364', '0xa81a664bbc423001', '0xc24b8b70d0f89791', '0xc76c51a30654be30',
'0xd192e819d6ef5218', '0xd69906245565a910', '0xf40e35855771202a', '0x106aa07032bbd1b8',
'0x19a4c116b8d2d0c8', '0x1e376c085141ab53', '0x2748774cdf8eeb99', '0x34b0bcb5e19b48a8',
'0x391c0cb3c5c95a63', '0x4ed8aa4ae3418acb', '0x5b9cca4f7763e373', '0x682e6ff3d6b2b8a3',
'0x748f82ee5defb2fc', '0x78a5636f43172f60', '0x84c87814a1f0ab72', '0x8cc702081a6439ec',
'0x90befffa23631e28', '0xa4506cebde82bde9', '0xbef9a3f7b2c67915', '0xc67178f2e372532b',
'0xca273eceea26619c', '0xd186b8c721c0c207', '0xeada7dd6cde0eb1e', '0xf57d4f7fee6ed178',
'0x06f067aa72176fba', '0x0a637dc5a2c898a6', '0x113f9804bef90dae', '0x1b710b35131c471b',
'0x28db77f523047d84', '0x32caab7b40c72493', '0x3c9ebe0a15c9bebc', '0x431d67c49c100d4c',
'0x4cc5d4becb3e42b6', '0x597f299cfc657e2a', '0x5fcb6fab3ad6faec', '0x6c44198c4a475817'
].map(n => BigInt(n))))();
const SHA512_Kh = /* @__PURE__ */ (() => K512[0])();
const SHA512_Kl = /* @__PURE__ */ (() => K512[1])();
// Reusable high-half schedule buffer for the RFC 6234 §6.4 64-bit `W_t` words.
const SHA512_W_H = /* @__PURE__ */ new Uint32Array(80);
// Reusable low-half schedule buffer for the RFC 6234 §6.4 64-bit `W_t` words.
const SHA512_W_L = /* @__PURE__ */ new Uint32Array(80);
/** Internal SHA-384 / SHA-512 compression engine from RFC 6234 §6.4. */
class SHA2_64B extends HashMD {
constructor(outputLen) {
super(128, outputLen, 16, false);
}
// prettier-ignore
get() {
const { Ah, Al, Bh, Bl, Ch, Cl, Dh, Dl, Eh, El, Fh, Fl, Gh, Gl, Hh, Hl } = this;
return [Ah, Al, Bh, Bl, Ch, Cl, Dh, Dl, Eh, El, Fh, Fl, Gh, Gl, Hh, Hl];
}
// prettier-ignore
set(Ah, Al, Bh, Bl, Ch, Cl, Dh, Dl, Eh, El, Fh, Fl, Gh, Gl, Hh, Hl) {
this.Ah = Ah | 0;
this.Al = Al | 0;
this.Bh = Bh | 0;
this.Bl = Bl | 0;
this.Ch = Ch | 0;
this.Cl = Cl | 0;
this.Dh = Dh | 0;
this.Dl = Dl | 0;
this.Eh = Eh | 0;
this.El = El | 0;
this.Fh = Fh | 0;
this.Fl = Fl | 0;
this.Gh = Gh | 0;
this.Gl = Gl | 0;
this.Hh = Hh | 0;
this.Hl = Hl | 0;
}
process(view, offset) {
// Extend the first 16 words into the remaining 64 words w[16..79] of the message schedule array
for (let i = 0; i < 16; i++, offset += 4) {
SHA512_W_H[i] = view.getUint32(offset);
SHA512_W_L[i] = view.getUint32((offset += 4));
}
for (let i = 16; i < 80; i++) {
// s0 := (w[i-15] rightrotate 1) xor (w[i-15] rightrotate 8) xor (w[i-15] rightshift 7)
const W15h = SHA512_W_H[i - 15] | 0;
const W15l = SHA512_W_L[i - 15] | 0;
const s0h = u64.rotrSH(W15h, W15l, 1) ^ u64.rotrSH(W15h, W15l, 8) ^ u64.shrSH(W15h, W15l, 7);
const s0l = u64.rotrSL(W15h, W15l, 1) ^ u64.rotrSL(W15h, W15l, 8) ^ u64.shrSL(W15h, W15l, 7);
// s1 := (w[i-2] rightrotate 19) xor (w[i-2] rightrotate 61) xor (w[i-2] rightshift 6)
const W2h = SHA512_W_H[i - 2] | 0;
const W2l = SHA512_W_L[i - 2] | 0;
const s1h = u64.rotrSH(W2h, W2l, 19) ^ u64.rotrBH(W2h, W2l, 61) ^ u64.shrSH(W2h, W2l, 6);
const s1l = u64.rotrSL(W2h, W2l, 19) ^ u64.rotrBL(W2h, W2l, 61) ^ u64.shrSL(W2h, W2l, 6);
// SHA512_W[i] = s0 + s1 + SHA512_W[i - 7] + SHA512_W[i - 16];
const SUMl = u64.add4L(s0l, s1l, SHA512_W_L[i - 7], SHA512_W_L[i - 16]);
const SUMh = u64.add4H(SUMl, s0h, s1h, SHA512_W_H[i - 7], SHA512_W_H[i - 16]);
SHA512_W_H[i] = SUMh | 0;
SHA512_W_L[i] = SUMl | 0;
}
let { Ah, Al, Bh, Bl, Ch, Cl, Dh, Dl, Eh, El, Fh, Fl, Gh, Gl, Hh, Hl } = this;
// Compression function main loop, 80 rounds
for (let i = 0; i < 80; i++) {
// S1 := (e rightrotate 14) xor (e rightrotate 18) xor (e rightrotate 41)
const sigma1h = u64.rotrSH(Eh, El, 14) ^ u64.rotrSH(Eh, El, 18) ^ u64.rotrBH(Eh, El, 41);
const sigma1l = u64.rotrSL(Eh, El, 14) ^ u64.rotrSL(Eh, El, 18) ^ u64.rotrBL(Eh, El, 41);
//const T1 = (H + sigma1 + Chi(E, F, G) + SHA256_K[i] + SHA256_W[i]) | 0;
const CHIh = (Eh & Fh) ^ (~Eh & Gh);
const CHIl = (El & Fl) ^ (~El & Gl);
// T1 = H + sigma1 + Chi(E, F, G) + SHA512_K[i] + SHA512_W[i]
// prettier-ignore
const T1ll = u64.add5L(Hl, sigma1l, CHIl, SHA512_Kl[i], SHA512_W_L[i]);
const T1h = u64.add5H(T1ll, Hh, sigma1h, CHIh, SHA512_Kh[i], SHA512_W_H[i]);
const T1l = T1ll | 0;
// S0 := (a rightrotate 28) xor (a rightrotate 34) xor (a rightrotate 39)
const sigma0h = u64.rotrSH(Ah, Al, 28) ^ u64.rotrBH(Ah, Al, 34) ^ u64.rotrBH(Ah, Al, 39);
const sigma0l = u64.rotrSL(Ah, Al, 28) ^ u64.rotrBL(Ah, Al, 34) ^ u64.rotrBL(Ah, Al, 39);
const MAJh = (Ah & Bh) ^ (Ah & Ch) ^ (Bh & Ch);
const MAJl = (Al & Bl) ^ (Al & Cl) ^ (Bl & Cl);
Hh = Gh | 0;
Hl = Gl | 0;
Gh = Fh | 0;
Gl = Fl | 0;
Fh = Eh | 0;
Fl = El | 0;
({ h: Eh, l: El } = u64.add(Dh | 0, Dl | 0, T1h | 0, T1l | 0));
Dh = Ch | 0;
Dl = Cl | 0;
Ch = Bh | 0;
Cl = Bl | 0;
Bh = Ah | 0;
Bl = Al | 0;
const All = u64.add3L(T1l, sigma0l, MAJl);
Ah = u64.add3H(All, T1h, sigma0h, MAJh);
Al = All | 0;
}
// Add the compressed chunk to the current hash value
({ h: Ah, l: Al } = u64.add(this.Ah | 0, this.Al | 0, Ah | 0, Al | 0));
({ h: Bh, l: Bl } = u64.add(this.Bh | 0, this.Bl | 0, Bh | 0, Bl | 0));
({ h: Ch, l: Cl } = u64.add(this.Ch | 0, this.Cl | 0, Ch | 0, Cl | 0));
({ h: Dh, l: Dl } = u64.add(this.Dh | 0, this.Dl | 0, Dh | 0, Dl | 0));
({ h: Eh, l: El } = u64.add(this.Eh | 0, this.El | 0, Eh | 0, El | 0));
({ h: Fh, l: Fl } = u64.add(this.Fh | 0, this.Fl | 0, Fh | 0, Fl | 0));
({ h: Gh, l: Gl } = u64.add(this.Gh | 0, this.Gl | 0, Gh | 0, Gl | 0));
({ h: Hh, l: Hl } = u64.add(this.Hh | 0, this.Hl | 0, Hh | 0, Hl | 0));
this.set(Ah, Al, Bh, Bl, Ch, Cl, Dh, Dl, Eh, El, Fh, Fl, Gh, Gl, Hh, Hl);
}
roundClean() {
clean(SHA512_W_H, SHA512_W_L);
}
destroy() {
// HashMD callers route post-destroy usability through `destroyed`; zeroizing alone still leaves
// update()/digest() callable on reused instances.
this.destroyed = true;
clean(this.buffer);
this.set(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
}
}
/** Internal SHA-512 hash class grounded in RFC 6234 §6.3 and §6.4. */
export class _SHA512 extends SHA2_64B {
Ah = SHA512_IV[0] | 0;
Al = SHA512_IV[1] | 0;
Bh = SHA512_IV[2] | 0;
Bl = SHA512_IV[3] | 0;
Ch = SHA512_IV[4] | 0;
Cl = SHA512_IV[5] | 0;
Dh = SHA512_IV[6] | 0;
Dl = SHA512_IV[7] | 0;
Eh = SHA512_IV[8] | 0;
El = SHA512_IV[9] | 0;
Fh = SHA512_IV[10] | 0;
Fl = SHA512_IV[11] | 0;
Gh = SHA512_IV[12] | 0;
Gl = SHA512_IV[13] | 0;
Hh = SHA512_IV[14] | 0;
Hl = SHA512_IV[15] | 0;
constructor() {
super(64);
}
}
/** Internal SHA-384 hash class grounded in RFC 6234 §6.3 and §6.4. */
export class _SHA384 extends SHA2_64B {
Ah = SHA384_IV[0] | 0;
Al = SHA384_IV[1] | 0;
Bh = SHA384_IV[2] | 0;
Bl = SHA384_IV[3] | 0;
Ch = SHA384_IV[4] | 0;
Cl = SHA384_IV[5] | 0;
Dh = SHA384_IV[6] | 0;
Dl = SHA384_IV[7] | 0;
Eh = SHA384_IV[8] | 0;
El = SHA384_IV[9] | 0;
Fh = SHA384_IV[10] | 0;
Fl = SHA384_IV[11] | 0;
Gh = SHA384_IV[12] | 0;
Gl = SHA384_IV[13] | 0;
Hh = SHA384_IV[14] | 0;
Hl = SHA384_IV[15] | 0;
constructor() {
super(48);
}
}
/**
* Truncated SHA512/256 and SHA512/224.
* SHA512_IV is XORed with 0xa5a5a5a5a5a5a5a5, then used as "intermediary" IV of SHA512/t.
* Then t hashes string to produce result IV.
* See the repo-side derivation recipe in `test/misc/sha2-gen-iv.js`.
* These IV literals are checked against that script rather than a dedicated
* local RFC section.
*/
/** SHA-512/224 IV derived by the SHA-512/t recipe in `test/misc/sha2-gen-iv.js` and
* stored as sixteen big-endian 32-bit halves. */
const T224_IV = /* @__PURE__ */ Uint32Array.from([
0x8c3d37c8, 0x19544da2, 0x73e19966, 0x89dcd4d6, 0x1dfab7ae, 0x32ff9c82, 0x679dd514, 0x582f9fcf,
0x0f6d2b69, 0x7bd44da8, 0x77e36f73, 0x04c48942, 0x3f9d85a8, 0x6a1d36c8, 0x1112e6ad, 0x91d692a1,
]);
/** SHA-512/256 IV derived by the SHA-512/t recipe in `test/misc/sha2-gen-iv.js` and
* stored as sixteen big-endian 32-bit halves. */
const T256_IV = /* @__PURE__ */ Uint32Array.from([
0x22312194, 0xfc2bf72c, 0x9f555fa3, 0xc84c64c2, 0x2393b86b, 0x6f53b151, 0x96387719, 0x5940eabd,
0x96283ee2, 0xa88effe3, 0xbe5e1e25, 0x53863992, 0x2b0199fc, 0x2c85b8aa, 0x0eb72ddc, 0x81c52ca2,
]);
/** Internal SHA-512/224 hash class using the derived `T224_IV` and the shared
* RFC 6234 §6.4 compression engine. */
export class _SHA512_224 extends SHA2_64B {
Ah = T224_IV[0] | 0;
Al = T224_IV[1] | 0;
Bh = T224_IV[2] | 0;
Bl = T224_IV[3] | 0;
Ch = T224_IV[4] | 0;
Cl = T224_IV[5] | 0;
Dh = T224_IV[6] | 0;
Dl = T224_IV[7] | 0;
Eh = T224_IV[8] | 0;
El = T224_IV[9] | 0;
Fh = T224_IV[10] | 0;
Fl = T224_IV[11] | 0;
Gh = T224_IV[12] | 0;
Gl = T224_IV[13] | 0;
Hh = T224_IV[14] | 0;
Hl = T224_IV[15] | 0;
constructor() {
super(28);
}
}
/** Internal SHA-512/256 hash class using the derived `T256_IV` and the shared
* RFC 6234 §6.4 compression engine. */
export class _SHA512_256 extends SHA2_64B {
Ah = T256_IV[0] | 0;
Al = T256_IV[1] | 0;
Bh = T256_IV[2] | 0;
Bl = T256_IV[3] | 0;
Ch = T256_IV[4] | 0;
Cl = T256_IV[5] | 0;
Dh = T256_IV[6] | 0;
Dl = T256_IV[7] | 0;
Eh = T256_IV[8] | 0;
El = T256_IV[9] | 0;
Fh = T256_IV[10] | 0;
Fl = T256_IV[11] | 0;
Gh = T256_IV[12] | 0;
Gl = T256_IV[13] | 0;
Hh = T256_IV[14] | 0;
Hl = T256_IV[15] | 0;
constructor() {
super(32);
}
}
/**
* SHA2-256 hash function from RFC 4634. In JS it's the fastest: even faster than Blake3. Some info:
*
* - Trying 2^128 hashes would get 50% chance of collision, using birthday attack.
* - BTC network is doing 2^70 hashes/sec (2^95 hashes/year) as per 2025.
* - Each sha256 hash is executing 2^18 bit operations.
* - Good 2024 ASICs can do 200Th/sec with 3500 watts of power, corresponding to 2^36 hashes/joule.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-256.
* ```ts
* sha256(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha256 = /* @__PURE__ */ createHasher(() => new _SHA256(),
/* @__PURE__ */ oidNist(0x01));
/**
* SHA2-224 hash function from RFC 4634.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-224.
* ```ts
* sha224(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha224 = /* @__PURE__ */ createHasher(() => new _SHA224(),
/* @__PURE__ */ oidNist(0x04));
/**
* SHA2-512 hash function from RFC 4634.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-512.
* ```ts
* sha512(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha512 = /* @__PURE__ */ createHasher(() => new _SHA512(),
/* @__PURE__ */ oidNist(0x03));
/**
* SHA2-384 hash function from RFC 4634.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-384.
* ```ts
* sha384(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha384 = /* @__PURE__ */ createHasher(() => new _SHA384(),
/* @__PURE__ */ oidNist(0x02));
/**
* SHA2-512/256 "truncated" hash function, with improved resistance to length extension attacks.
* See the paper on {@link https://eprint.iacr.org/2010/548.pdf | truncated SHA512}.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-512/256.
* ```ts
* sha512_256(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha512_256 = /* @__PURE__ */ createHasher(() => new _SHA512_256(),
/* @__PURE__ */ oidNist(0x06));
/**
* SHA2-512/224 "truncated" hash function, with improved resistance to length extension attacks.
* See the paper on {@link https://eprint.iacr.org/2010/548.pdf | truncated SHA512}.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-512/224.
* ```ts
* sha512_224(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha512_224 = /* @__PURE__ */ createHasher(() => new _SHA512_224(),
/* @__PURE__ */ oidNist(0x05));
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/**
* SHA3 (keccak) addons.
*
* * cSHAKE, KMAC, TupleHash, ParallelHash + XOF variants from
* {@link https://csrc.nist.gov/pubs/sp/800/185/final | NIST SP 800-185}
* * KangarooTwelve 🦘 and TurboSHAKE - reduced-round keccak from
* {@link https://datatracker.ietf.org/doc/rfc9861/ | RFC 9861}
* * KeccakPRG: Pseudo-random generator based on Keccak
* ({@link https://keccak.team/files/CSF-0.1.pdf | pdf})
* @module
*/
import { Keccak, type ShakeOpts } from './sha3.ts';
import { type CHash, type CHashXOF, type Hash, type HashXOF, type KDFInput, type PRG, type TArg, type TRet } from './utils.ts';
/** Options for cSHAKE and related SP 800-185 functions. */
export type cShakeOpts = ShakeOpts & {
/** Optional personalization string mixed into domain separation. */
personalization?: Uint8Array;
/**
* Optional NIST function-name string used for domain separation.
* SP 800-185 reserves this for standardized function names; applications
* should generally stick to `personalization`.
*/
NISTfn?: KDFInput;
};
/** TupleHash callable interface. */
export type ITupleHash = {
/**
* Hashes an ordered tuple of byte arrays.
* @param messages - Ordered byte-array tuple to hash.
* @param opts - TupleHash output and personalization options. See {@link cShakeOpts}.
* @returns Digest bytes.
*/
(messages: TArg<Uint8Array[]>, opts?: TArg<cShakeOpts>): TRet<Uint8Array>;
/**
* Creates an incremental TupleHash state.
* @param opts - TupleHash output and personalization options. See {@link cShakeOpts}.
* @returns Stateful TupleHash instance.
*/
create(opts?: cShakeOpts): _TupleHash;
};
/**
* 128-bit NIST cSHAKE XOF.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and NIST function-name
* settings. When both `NISTfn` and `personalization` are empty,
* SP 800-185 defines this as plain SHAKE128. Defaults to 16 output bytes
* when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with cSHAKE128.
* ```ts
* cshake128(new Uint8Array([1, 2, 3]), { dkLen: 32 });
* ```
*/
export declare const cshake128: TRet<CHashXOF<Keccak, cShakeOpts>>;
/**
* 256-bit NIST cSHAKE XOF.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and NIST function-name
* settings. When both `NISTfn` and `personalization` are empty,
* SP 800-185 defines this as plain SHAKE256. Defaults to 32 output bytes
* when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with cSHAKE256.
* ```ts
* cshake256(new Uint8Array([1, 2, 3]), { dkLen: 64 });
* ```
*/
export declare const cshake256: TRet<CHashXOF<Keccak, cShakeOpts>>;
/**
* Internal KMAC class.
* SP 800-185 §8.4.1 still recommends keys at least as long as the target
* security strength.
*/
export declare class _KMAC extends Keccak implements HashXOF<_KMAC> {
constructor(blockLen: number, outputLen: number, enableXOF: boolean, key: TArg<Uint8Array>, opts?: TArg<cShakeOpts>);
protected finish(): void;
_cloneInto(to?: _KMAC): _KMAC;
clone(): _KMAC;
}
/** KMAC callable interface. */
export type IKMAC = {
/**
* Computes a keyed KMAC digest for one message.
* @param key - Secret key bytes.
* @param message - Message bytes to authenticate.
* @param opts - KMAC output and personalization options. See {@link KangarooOpts}.
* @returns Authentication tag bytes.
*/
(key: TArg<Uint8Array>, message: TArg<Uint8Array>, opts?: TArg<KangarooOpts>): TRet<Uint8Array>;
/**
* Creates an incremental KMAC state.
* @param key - Secret key bytes.
* @param opts - KMAC output and personalization options. See {@link cShakeOpts}.
* @returns Stateful KMAC instance.
*/
create(key: TArg<Uint8Array>, opts?: TArg<cShakeOpts>): _KMAC;
};
/**
* 128-bit Keccak MAC.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param opts - Optional output and personalization settings. Defaults to
* 16 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with KMAC128.
* ```ts
* kmac128(new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]));
* ```
*/
export declare const kmac128: TRet<IKMAC>;
/**
* 256-bit Keccak MAC.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with KMAC256.
* ```ts
* kmac256(new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]));
* ```
*/
export declare const kmac256: TRet<IKMAC>;
/**
* 128-bit Keccak-MAC XOF.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param opts - Optional output and personalization settings. Defaults to
* 16 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with KMAC128 XOF output.
* ```ts
* kmac128xof(new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]), { dkLen: 32 });
* ```
*/
export declare const kmac128xof: TRet<IKMAC>;
/**
* 256-bit Keccak-MAC XOF.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with KMAC256 XOF output.
* ```ts
* kmac256xof(new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]), { dkLen: 64 });
* ```
*/
export declare const kmac256xof: TRet<IKMAC>;
/**
* Internal TupleHash class for byte-array tuple elements.
* This implementation relies on SP 800-185's byte-oriented encoding form
* rather than arbitrary bit strings.
*/
export declare class _TupleHash extends Keccak implements HashXOF<_TupleHash> {
constructor(blockLen: number, outputLen: number, enableXOF: boolean, opts?: TArg<cShakeOpts>);
protected finish(): void;
_cloneInto(to?: _TupleHash): _TupleHash;
clone(): _TupleHash;
}
/**
* 128-bit TupleHASH. `tuple(['ab', 'cd']) != tuple(['a', 'bcd'])`.
* @param messages - ordered byte-array tuple
* @param opts - Optional output and personalization settings. Defaults to
* 16 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a tuple of byte arrays with TupleHash128.
* ```ts
* tuplehash128([new Uint8Array([1]), new Uint8Array([2])]);
* ```
*/
export declare const tuplehash128: TRet<ITupleHash>;
/**
* 256-bit TupleHASH. `tuple(['ab', 'cd']) != tuple(['a', 'bcd'])`.
* @param messages - ordered byte-array tuple
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a tuple of byte arrays with TupleHash256.
* ```ts
* tuplehash256([new Uint8Array([1]), new Uint8Array([2])]);
* ```
*/
export declare const tuplehash256: TRet<ITupleHash>;
/**
* 128-bit TupleHASH XOF.
* @param messages - ordered byte-array tuple
* @param opts - Optional output and personalization settings. Defaults to
* 16 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a tuple of byte arrays with TupleHash128 XOF output.
* ```ts
* tuplehash128xof([new Uint8Array([1]), new Uint8Array([2])], { dkLen: 32 });
* ```
*/
export declare const tuplehash128xof: TRet<ITupleHash>;
/**
* 256-bit TupleHASH XOF.
* @param messages - ordered byte-array tuple
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a tuple of byte arrays with TupleHash256 XOF output.
* ```ts
* tuplehash256xof([new Uint8Array([1]), new Uint8Array([2])], { dkLen: 64 });
* ```
*/
export declare const tuplehash256xof: TRet<ITupleHash>;
type ParallelOpts = KangarooOpts & {
blockLen?: number;
};
/** Internal Parallel Keccak Hash class. */
export declare class _ParallelHash extends Keccak implements HashXOF<_ParallelHash> {
private leafHash?;
protected leafCons: () => Hash<Keccak>;
private chunkPos;
private chunksDone;
private chunkLen;
constructor(blockLen: number, outputLen: number, leafCons: () => Hash<Keccak>, enableXOF: boolean, opts?: TArg<ParallelOpts>);
protected finish(): void;
_cloneInto(to?: _ParallelHash): _ParallelHash;
destroy(): void;
clone(): _ParallelHash;
}
/**
* 128-bit ParallelHash. In JS, it is not parallel.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and chunking settings.
* Defaults to 16 output bytes when `dkLen` is omitted.
* See {@link ParallelOpts}.
* @returns Digest bytes.
* @example
* Hash a message with ParallelHash128.
* ```ts
* parallelhash128(new Uint8Array([1, 2, 3]));
* ```
*/
export declare const parallelhash128: TRet<CHash<Keccak, ParallelOpts>>;
/**
* 256-bit ParallelHash. In JS, it is not parallel.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and chunking settings.
* Defaults to 32 output bytes when `dkLen` is omitted.
* See {@link ParallelOpts}.
* @returns Digest bytes.
* @example
* Hash a message with ParallelHash256.
* ```ts
* parallelhash256(new Uint8Array([1, 2, 3]));
* ```
*/
export declare const parallelhash256: TRet<CHash<Keccak, ParallelOpts>>;
/**
* 128-bit ParallelHash XOF. In JS, it is not parallel.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and chunking settings.
* Defaults to 16 output bytes when `dkLen` is omitted.
* See {@link ParallelOpts}.
* @returns Digest bytes.
* @example
* Hash a message with ParallelHash128 XOF output.
* ```ts
* parallelhash128xof(new Uint8Array([1, 2, 3]), { dkLen: 32 });
* ```
*/
export declare const parallelhash128xof: TRet<CHashXOF<Keccak, ParallelOpts>>;
/**
* 256-bit ParallelHash XOF. In JS, it is not parallel.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and chunking settings.
* Defaults to 32 output bytes when `dkLen` is omitted.
* See {@link ParallelOpts}.
* @returns Digest bytes.
* @example
* Hash a message with ParallelHash256 XOF output.
* ```ts
* parallelhash256xof(new Uint8Array([1, 2, 3]), { dkLen: 64 });
* ```
*/
export declare const parallelhash256xof: TRet<CHashXOF<Keccak, ParallelOpts>>;
/**
* TurboSHAKE options.
* `D` is the domain separation byte; RFC 9861 defines output length `L`
* as a positive integer.
*/
export type TurboshakeOpts = ShakeOpts & {
/** Optional domain separation byte in the `0x01..0x7f` range. */
D?: number;
};
/**
* TurboSHAKE 128-bit: reduced 12-round keccak.
* Should've been a simple "shake with 12 rounds", but we got a whole new
* spec about Turbo SHAKE Pro MAX.
* @param msg - message bytes to hash
* @param opts - Optional output-length and domain-separation settings.
* RFC 9861 §2.1 defaults `D` to `0x1f`. Defaults to 32 output bytes when
* `dkLen` is omitted. See {@link TurboshakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with TurboSHAKE128.
* ```ts
* turboshake128(new Uint8Array([1, 2, 3]), { dkLen: 32 });
* ```
*/
export declare const turboshake128: TRet<CHashXOF<Keccak, TurboshakeOpts>>;
/**
* TurboSHAKE 256-bit: reduced 12-round keccak.
* @param msg - message bytes to hash
* @param opts - Optional output-length and domain-separation settings.
* RFC 9861 §2.1 defaults `D` to `0x1f`. Defaults to 64 output bytes when
* `dkLen` is omitted. See {@link TurboshakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with TurboSHAKE256.
* ```ts
* turboshake256(new Uint8Array([1, 2, 3]), { dkLen: 64 });
* ```
*/
export declare const turboshake256: TRet<CHashXOF<Keccak, TurboshakeOpts>>;
/** K12 options. */
export type KangarooOpts = {
/**
* Desired digest length in bytes.
* RFC 9861 §3 defines output length `L` as a positive integer.
*/
dkLen?: number;
/**
* Optional personalization string mixed into the sponge state.
* Stateful K12 instances keep an internal copy so caller buffers can be
* wiped independently.
*/
personalization?: Uint8Array;
};
/** Internal K12 hash class. */
export declare class _KangarooTwelve extends Keccak implements HashXOF<_KangarooTwelve> {
readonly chunkLen = 8192;
private leafHash?;
protected leafLen: number;
private personalization;
private chunkPos;
private chunksDone;
constructor(blockLen: number, leafLen: number, outputLen: number, rounds: number, opts: TArg<KangarooOpts>);
update(data: TArg<Uint8Array>): this;
protected finish(): void;
destroy(): void;
_cloneInto(to?: _KangarooTwelve): _KangarooTwelve;
clone(): _KangarooTwelve;
}
/**
* 128-bit KangarooTwelve (k12): reduced 12-round keccak.
* @param msg - message bytes to hash
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link KangarooOpts}.
* @returns Digest bytes.
* @example
* Hash a message with KangarooTwelve-128.
* ```ts
* kt128(new Uint8Array([1, 2, 3]));
* ```
*/
export declare const kt128: TRet<CHash<_KangarooTwelve, KangarooOpts>>;
/**
* 256-bit KangarooTwelve (k12): reduced 12-round keccak.
* @param msg - message bytes to hash
* @param opts - Optional output and personalization settings. Defaults to
* 64 output bytes when `dkLen` is omitted. See {@link KangarooOpts}.
* @returns Digest bytes.
* @example
* Hash a message with KangarooTwelve-256.
* ```ts
* kt256(new Uint8Array([1, 2, 3]));
* ```
*/
export declare const kt256: TRet<CHash<_KangarooTwelve, KangarooOpts>>;
/** KangarooTwelve-based MAC function type. */
export type HopMAC = (key: TArg<Uint8Array>, message: TArg<Uint8Array>, personalization: TArg<Uint8Array>, dkLen?: number) => TRet<Uint8Array>;
/**
* 128-bit KangarooTwelve-based MAC.
*
* These untested (there is no test vectors or implementation available). Use at your own risk.
* HopMAC128(Key, M, C, L) = KT128(Key, KT128(M, C, 32), L)
* HopMAC256(Key, M, C, L) = KT256(Key, KT256(M, C, 64), L)
* The inner KangarooTwelve call always uses a fixed 32-byte digest here,
* regardless of the outer `dkLen`.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param personalization - personalization bytes mixed into the inner hash
* @param dkLen - optional output length in bytes
* @returns Authentication tag bytes.
* @example
* Authenticate a message with HopMAC128.
* ```ts
* HopMAC128(new Uint8Array([1]), new Uint8Array([2]), new Uint8Array([3]), 32);
* ```
*/
export declare const HopMAC128: TRet<HopMAC>;
/**
* 256-bit KangarooTwelve-based MAC.
* Like `HopMAC128`, there are no test vectors or known independent
* implementations available for cross-checking.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param personalization - personalization bytes mixed into the inner hash
* @param dkLen - optional output length in bytes. The inner KangarooTwelve
* call still uses a fixed 64-byte digest here, regardless of the outer
* `dkLen`.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with HopMAC256.
* ```ts
* HopMAC256(new Uint8Array([1]), new Uint8Array([2]), new Uint8Array([3]), 64);
* ```
*/
export declare const HopMAC256: TRet<HopMAC>;
/**
* More at
* {@link https://github.com/XKCP/XKCP/tree/master/lib/high/Keccak/PRG}.
* Accepted capacities must keep `rho = 1598 - capacity` byte-aligned, and
* `.clean()` later also requires `rate > 801`.
*/
export declare class _KeccakPRG extends Keccak implements PRG {
protected rate: number;
constructor(capacity: number);
protected keccak(): void;
update(data: TArg<Uint8Array>): this;
protected finish(): void;
digestInto(_out: TArg<Uint8Array>): void;
addEntropy(seed: TArg<Uint8Array>): void;
randomBytes(length: number): TRet<Uint8Array>;
clean(): void;
_cloneInto(to?: _KeccakPRG): _KeccakPRG;
clone(): _KeccakPRG;
}
/**
* KeccakPRG: pseudo-random generator based on Keccak.
* See {@link https://keccak.team/files/CSF-0.1.pdf}.
* @param capacity - sponge capacity in bits. Accepted values are those that
* keep `rho = 1598 - capacity` byte-aligned; the default `254` is chosen
* because it satisfies that duplex layout while leaving a wide byte-aligned
* rate.
* @returns PRG instance backed by a Keccak sponge.
* @example
* Create a Keccak-based pseudorandom generator and read bytes from it.
* ```ts
* const prg = keccakprg(254);
* prg.randomBytes(8);
* ```
*/
export declare const keccakprg: (capacity?: number) => TRet<_KeccakPRG>;
export {};
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/**
* SHA3 (keccak) addons.
*
* * cSHAKE, KMAC, TupleHash, ParallelHash + XOF variants from
* {@link https://csrc.nist.gov/pubs/sp/800/185/final | NIST SP 800-185}
* * KangarooTwelve 🦘 and TurboSHAKE - reduced-round keccak from
* {@link https://datatracker.ietf.org/doc/rfc9861/ | RFC 9861}
* * KeccakPRG: Pseudo-random generator based on Keccak
* ({@link https://keccak.team/files/CSF-0.1.pdf | pdf})
* @module
*/
import { Keccak } from "./sha3.js";
import { abytes, aexists, anumber, clean, copyBytes, createHasher, kdfInputToBytes, u32, } from "./utils.js";
// cSHAKE && KMAC (NIST SP800-185)
const _8n = /* @__PURE__ */ BigInt(8);
const _ffn = /* @__PURE__ */ BigInt(0xff);
// It is safe to use bigints here, since they used only for length encoding (not actual data).
// We use bigints in sha256 for lengths too.
// Callers are still expected to supply SP 800-185-valid lengths
// (`0 <= x < 2^2040`); this helper does not enforce that bound.
function leftEncode(n) {
n = BigInt(n);
const res = [Number(n & _ffn)];
n >>= _8n;
for (; n > 0; n >>= _8n)
res.unshift(Number(n & _ffn));
res.unshift(res.length);
return new Uint8Array(res);
}
// Same caller contract as `leftEncode(...)`: lengths must already satisfy SP 800-185 §2.3.1.
function rightEncode(n) {
n = BigInt(n);
const res = [Number(n & _ffn)];
n >>= _8n;
for (; n > 0; n >>= _8n)
res.unshift(Number(n & _ffn));
res.push(res.length);
return new Uint8Array(res);
}
// `dkLen` validation is deferred to the downstream Keccak constructor.
function chooseLen(opts, outputLen) {
return opts.dkLen === undefined ? outputLen : opts.dkLen;
}
const abytesOrZero = (buf, title = '') => {
if (buf === undefined)
return EMPTY_BUFFER;
abytes(buf, undefined, title);
return buf;
};
// NOTE: second modulo is necessary since we don't need to add padding if the
// current element takes a whole block.
// Callers only pass the fixed positive Keccak rates here (`168` or `136`);
// `block <= 0` is not validated locally.
const getPadding = (len, block) => new Uint8Array((block - (len % block)) % block);
// Personalization
function cshakePers(hash, opts = {}) {
const h = hash;
if (!opts || (opts.personalization === undefined && opts.NISTfn === undefined))
return h;
// Encode and pad inplace to avoid unneccesary memory copies/slices so we
// don't need to zero them later.
// bytepad(encode_string(N) || encode_string(S), rate), where `rate` is the
// current cSHAKE/KMAC/TupleHash/ParallelHash block length.
const blockLenBytes = leftEncode(h.blockLen);
const fn = opts.NISTfn === undefined ? EMPTY_BUFFER : kdfInputToBytes(opts.NISTfn);
const fnLen = leftEncode(_8n * BigInt(fn.length)); // length in bits
const pers = abytesOrZero(opts.personalization, 'personalization');
const persLen = leftEncode(_8n * BigInt(pers.length)); // length in bits
if (!fn.length && !pers.length)
return h;
// SP 800-185 cSHAKE appends `00` instead of SHAKE's `1111`; in this Keccak implementation
// that changes the delimited suffix byte from `0x1f` to `0x04` once N or S is non-empty.
h.suffix = 0x04;
h.update(blockLenBytes).update(fnLen).update(fn).update(persLen).update(pers);
let totalLen = blockLenBytes.length + fnLen.length + fn.length + persLen.length + pers.length;
h.update(getPadding(totalLen, h.blockLen));
return h;
}
const gencShake = (suffix, blockLen, outputLen) => createHasher((opts = {}) => cshakePers(new Keccak(blockLen, suffix, chooseLen(opts, outputLen), true), opts));
/**
* 128-bit NIST cSHAKE XOF.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and NIST function-name
* settings. When both `NISTfn` and `personalization` are empty,
* SP 800-185 defines this as plain SHAKE128. Defaults to 16 output bytes
* when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with cSHAKE128.
* ```ts
* cshake128(new Uint8Array([1, 2, 3]), { dkLen: 32 });
* ```
*/
export const cshake128 = /* @__PURE__ */ gencShake(0x1f, 168, 16);
/**
* 256-bit NIST cSHAKE XOF.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and NIST function-name
* settings. When both `NISTfn` and `personalization` are empty,
* SP 800-185 defines this as plain SHAKE256. Defaults to 32 output bytes
* when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with cSHAKE256.
* ```ts
* cshake256(new Uint8Array([1, 2, 3]), { dkLen: 64 });
* ```
*/
export const cshake256 = /* @__PURE__ */ gencShake(0x1f, 136, 32);
/**
* Internal KMAC class.
* SP 800-185 §8.4.1 still recommends keys at least as long as the target
* security strength.
*/
export class _KMAC extends Keccak {
constructor(blockLen, outputLen, enableXOF, key, opts = {}) {
super(blockLen, 0x1f, outputLen, enableXOF);
// Preload T = bytepad(encode_string("KMAC") || encode_string(S), rate); later updates append
// newX = bytepad(encode_string(K), rate) || X and `finish()` appends right_encode(L or 0).
cshakePers(this, {
NISTfn: 'KMAC',
personalization: opts.personalization,
});
abytes(key, undefined, 'key');
// 1. newX = bytepad(encode_string(K), rate) || X || right_encode(L),
// with `rate = this.blockLen`.
const blockLenBytes = leftEncode(this.blockLen);
const keyLen = leftEncode(_8n * BigInt(key.length));
this.update(blockLenBytes).update(keyLen).update(key);
const totalLen = blockLenBytes.length + keyLen.length + key.length;
this.update(getPadding(totalLen, this.blockLen));
}
finish() {
// SP 800-185 uses right_encode(L) for fixed-length KMAC and right_encode(0) for KMACXOF.
// outputLen in bits
if (!this.finished)
this.update(rightEncode(this.enableXOF ? 0 : _8n * BigInt(this.outputLen)));
super.finish();
}
_cloneInto(to) {
// Create new instance without calling constructor since the key
// is already in state and we don't know it.
// Force "to" to be instance of KMAC instead of Sha3.
if (!to) {
to = Object.create(Object.getPrototypeOf(this), {});
to.state = this.state.slice();
to.blockLen = this.blockLen;
to.state32 = u32(to.state);
}
return super._cloneInto(to);
}
clone() {
return this._cloneInto();
}
}
function genKmac(blockLen, outputLen, xof = false) {
// One-shot XOF wrappers still finalize via `.digest()` because `_KMAC`
// already bakes the requested output length into the state.
const kmac = (key, message, opts) => kmac.create(key, opts).update(message).digest();
kmac.create = (key, opts = {}) => new _KMAC(blockLen, chooseLen(opts, outputLen), xof, key, opts);
return kmac;
}
/**
* 128-bit Keccak MAC.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param opts - Optional output and personalization settings. Defaults to
* 16 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with KMAC128.
* ```ts
* kmac128(new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]));
* ```
*/
export const kmac128 = /* @__PURE__ */ genKmac(168, 16);
/**
* 256-bit Keccak MAC.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with KMAC256.
* ```ts
* kmac256(new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]));
* ```
*/
export const kmac256 = /* @__PURE__ */ genKmac(136, 32);
/**
* 128-bit Keccak-MAC XOF.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param opts - Optional output and personalization settings. Defaults to
* 16 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with KMAC128 XOF output.
* ```ts
* kmac128xof(new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]), { dkLen: 32 });
* ```
*/
export const kmac128xof = /* @__PURE__ */ genKmac(168, 16, true);
/**
* 256-bit Keccak-MAC XOF.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with KMAC256 XOF output.
* ```ts
* kmac256xof(new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]), { dkLen: 64 });
* ```
*/
export const kmac256xof = /* @__PURE__ */ genKmac(136, 32, true);
/**
* Internal TupleHash class for byte-array tuple elements.
* This implementation relies on SP 800-185's byte-oriented encoding form
* rather than arbitrary bit strings.
*/
export class _TupleHash extends Keccak {
constructor(blockLen, outputLen, enableXOF, opts = {}) {
super(blockLen, 0x1f, outputLen, enableXOF);
cshakePers(this, {
NISTfn: 'TupleHash',
personalization: opts.personalization,
});
// Change update after cshake processed
this.update = (data) => {
abytes(data);
// SP 800-185 encodes each tuple element as
// encode_string(X[i]) = left_encode(len(X[i])) || X[i].
super.update(leftEncode(_8n * BigInt(data.length)));
super.update(data);
return this;
};
}
finish() {
// SP 800-185 uses right_encode(L) for fixed-length TupleHash
// and right_encode(0) for TupleHashXOF.
if (!this.finished)
// outputLen in bits
super.update(rightEncode(this.enableXOF ? 0 : _8n * BigInt(this.outputLen)));
super.finish();
}
_cloneInto(to) {
to ||= new _TupleHash(this.blockLen, this.outputLen, this.enableXOF);
return super._cloneInto(to);
}
clone() {
return this._cloneInto();
}
}
function genTuple(blockLen, outputLen, xof = false) {
// One-shot XOF wrappers still use `.digest()` because `_TupleHash` stores
// the requested output length in the state itself.
const tuple = (messages, opts) => {
const h = tuple.create(opts);
if (!Array.isArray(messages))
throw new Error('expected array of messages');
for (const msg of messages)
h.update(msg);
return h.digest();
};
tuple.create = (opts = {}) => new _TupleHash(blockLen, chooseLen(opts, outputLen), xof, opts);
return tuple;
}
/**
* 128-bit TupleHASH. `tuple(['ab', 'cd']) != tuple(['a', 'bcd'])`.
* @param messages - ordered byte-array tuple
* @param opts - Optional output and personalization settings. Defaults to
* 16 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a tuple of byte arrays with TupleHash128.
* ```ts
* tuplehash128([new Uint8Array([1]), new Uint8Array([2])]);
* ```
*/
export const tuplehash128 = /* @__PURE__ */ genTuple(168, 16);
/**
* 256-bit TupleHASH. `tuple(['ab', 'cd']) != tuple(['a', 'bcd'])`.
* @param messages - ordered byte-array tuple
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a tuple of byte arrays with TupleHash256.
* ```ts
* tuplehash256([new Uint8Array([1]), new Uint8Array([2])]);
* ```
*/
export const tuplehash256 = /* @__PURE__ */ genTuple(136, 32);
/**
* 128-bit TupleHASH XOF.
* @param messages - ordered byte-array tuple
* @param opts - Optional output and personalization settings. Defaults to
* 16 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a tuple of byte arrays with TupleHash128 XOF output.
* ```ts
* tuplehash128xof([new Uint8Array([1]), new Uint8Array([2])], { dkLen: 32 });
* ```
*/
export const tuplehash128xof = /* @__PURE__ */ genTuple(168, 16, true);
/**
* 256-bit TupleHASH XOF.
* @param messages - ordered byte-array tuple
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a tuple of byte arrays with TupleHash256 XOF output.
* ```ts
* tuplehash256xof([new Uint8Array([1]), new Uint8Array([2])], { dkLen: 64 });
* ```
*/
export const tuplehash256xof = /* @__PURE__ */ genTuple(136, 32, true);
/** Internal Parallel Keccak Hash class. */
export class _ParallelHash extends Keccak {
leafHash;
leafCons;
chunkPos = 0; // Position of current block in chunk
chunksDone = 0; // How many chunks we already have
chunkLen;
constructor(blockLen, outputLen, leafCons, enableXOF, opts = {}) {
super(blockLen, 0x1f, outputLen, enableXOF);
cshakePers(this, {
NISTfn: 'ParallelHash',
personalization: opts.personalization,
});
this.leafCons = leafCons;
let { blockLen: B = 8 } = opts;
anumber(B);
// blockLen=0 makes take=0 in update(), so pos never advances and the hash hangs.
if (B < 1)
throw new Error('"blockLen" must be >= 1, got ' + B);
this.chunkLen = B;
// SP 800-185 initializes z = left_encode(B); each completed chunk appends
// one fixed-size cSHAKE leaf digest before finish() adds right_encode(n)
// and right_encode(L or 0).
super.update(leftEncode(B));
// Change update after cshake processed
this.update = (data) => {
abytes(data);
const { chunkLen, leafCons } = this;
for (let pos = 0, len = data.length; pos < len;) {
if (this.chunkPos == chunkLen || !this.leafHash) {
if (this.leafHash) {
super.update(this.leafHash.digest());
this.chunksDone++;
}
this.leafHash = leafCons();
this.chunkPos = 0;
}
const take = Math.min(chunkLen - this.chunkPos, len - pos);
this.leafHash.update(data.subarray(pos, pos + take));
this.chunkPos += take;
pos += take;
}
return this;
};
}
finish() {
if (this.finished)
return;
if (this.leafHash) {
super.update(this.leafHash.digest());
this.chunksDone++;
}
// SP 800-185 finishes ParallelHash as
// z || right_encode(n) || right_encode(L); XOF mode replaces
// right_encode(L) with right_encode(0).
super.update(rightEncode(this.chunksDone));
// outputLen in bits
super.update(rightEncode(this.enableXOF ? 0 : _8n * BigInt(this.outputLen)));
super.finish();
}
_cloneInto(to) {
to ||= new _ParallelHash(this.blockLen, this.outputLen, this.leafCons, this.enableXOF);
to.leafCons = this.leafCons;
// Reused destinations can carry a stale partial leaf
// when the source is still on the root sponge.
if (this.leafHash)
to.leafHash = this.leafHash._cloneInto(to.leafHash);
else if (to.leafHash) {
to.leafHash.destroy();
to.leafHash = undefined;
}
to.chunkPos = this.chunkPos;
to.chunkLen = this.chunkLen;
to.chunksDone = this.chunksDone;
return super._cloneInto(to);
}
destroy() {
super.destroy.call(this);
if (this.leafHash)
this.leafHash.destroy();
}
clone() {
return this._cloneInto();
}
}
function genPrl(blockLen, outputLen, leaf, xof = false) {
const parallel = (message, opts) => parallel.create(opts).update(message).digest();
parallel.create = (opts = {}) => new _ParallelHash(blockLen, chooseLen(opts, outputLen),
// SP 800-185 fixes leaf digests at 256 bits for ParallelHash128 and
// 512 bits for ParallelHash256; only the final cSHAKE output uses the
// caller-selected dkLen.
() => leaf.create({ dkLen: 2 * outputLen }), xof, opts);
parallel.outputLen = outputLen;
parallel.blockLen = blockLen;
parallel.canXOF = xof;
return parallel;
}
/**
* 128-bit ParallelHash. In JS, it is not parallel.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and chunking settings.
* Defaults to 16 output bytes when `dkLen` is omitted.
* See {@link ParallelOpts}.
* @returns Digest bytes.
* @example
* Hash a message with ParallelHash128.
* ```ts
* parallelhash128(new Uint8Array([1, 2, 3]));
* ```
*/
export const parallelhash128 = /* @__PURE__ */ genPrl(168, 16, cshake128);
/**
* 256-bit ParallelHash. In JS, it is not parallel.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and chunking settings.
* Defaults to 32 output bytes when `dkLen` is omitted.
* See {@link ParallelOpts}.
* @returns Digest bytes.
* @example
* Hash a message with ParallelHash256.
* ```ts
* parallelhash256(new Uint8Array([1, 2, 3]));
* ```
*/
export const parallelhash256 = /* @__PURE__ */ genPrl(136, 32, cshake256);
/**
* 128-bit ParallelHash XOF. In JS, it is not parallel.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and chunking settings.
* Defaults to 16 output bytes when `dkLen` is omitted.
* See {@link ParallelOpts}.
* @returns Digest bytes.
* @example
* Hash a message with ParallelHash128 XOF output.
* ```ts
* parallelhash128xof(new Uint8Array([1, 2, 3]), { dkLen: 32 });
* ```
*/
export const parallelhash128xof = /* @__PURE__ */ genPrl(168, 16, cshake128, true);
/**
* 256-bit ParallelHash XOF. In JS, it is not parallel.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and chunking settings.
* Defaults to 32 output bytes when `dkLen` is omitted.
* See {@link ParallelOpts}.
* @returns Digest bytes.
* @example
* Hash a message with ParallelHash256 XOF output.
* ```ts
* parallelhash256xof(new Uint8Array([1, 2, 3]), { dkLen: 64 });
* ```
*/
export const parallelhash256xof = /* @__PURE__ */ genPrl(136, 32, cshake256, true);
const genTurbo = (blockLen, outputLen) => createHasher((opts = {}) => {
const D = opts.D === undefined ? 0x1f : opts.D;
// RFC 9861 §2.1 fixes the default `D = 0x1f`; §2.2 defines the 12-round
// TurboSHAKE family selected here.
if (!Number.isSafeInteger(D) || D < 0x01 || D > 0x7f)
throw new Error('"D" (domain separation byte) must be 0x01..0x7f, got: ' + D);
const dkLen = opts.dkLen === undefined ? outputLen : opts.dkLen;
// RFC 9861 §§2.1-2.2 define output length L as a positive integer.
if (dkLen < 1)
throw new Error('"dkLen" must be >= 1');
return new Keccak(blockLen, D, dkLen, true, 12);
});
/**
* TurboSHAKE 128-bit: reduced 12-round keccak.
* Should've been a simple "shake with 12 rounds", but we got a whole new
* spec about Turbo SHAKE Pro MAX.
* @param msg - message bytes to hash
* @param opts - Optional output-length and domain-separation settings.
* RFC 9861 §2.1 defaults `D` to `0x1f`. Defaults to 32 output bytes when
* `dkLen` is omitted. See {@link TurboshakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with TurboSHAKE128.
* ```ts
* turboshake128(new Uint8Array([1, 2, 3]), { dkLen: 32 });
* ```
*/
export const turboshake128 = /* @__PURE__ */ genTurbo(168, 32);
/**
* TurboSHAKE 256-bit: reduced 12-round keccak.
* @param msg - message bytes to hash
* @param opts - Optional output-length and domain-separation settings.
* RFC 9861 §2.1 defaults `D` to `0x1f`. Defaults to 64 output bytes when
* `dkLen` is omitted. See {@link TurboshakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with TurboSHAKE256.
* ```ts
* turboshake256(new Uint8Array([1, 2, 3]), { dkLen: 64 });
* ```
*/
export const turboshake256 = /* @__PURE__ */ genTurbo(136, 64);
// Same as NIST rightEncode, but returns `[0]` for the zero string.
// Callers still need to keep `x < 256^255` per RFC 9861 §3.3.
function rightEncodeK12(n) {
n = BigInt(n);
const res = [];
for (; n > 0; n >>= _8n)
res.unshift(Number(n & _ffn));
res.push(res.length);
return Uint8Array.from(res);
}
const EMPTY_BUFFER = /* @__PURE__ */ Uint8Array.of();
/** Internal K12 hash class. */
export class _KangarooTwelve extends Keccak {
chunkLen = 8192;
leafHash;
leafLen;
personalization;
chunkPos = 0; // Position of current block in chunk
chunksDone = 0; // How many chunks we already have
constructor(blockLen, leafLen, outputLen, rounds, opts) {
super(blockLen, 0x07, outputLen, true, rounds);
// RFC 9861 §3 defines output length L as a positive integer.
if (outputLen < 1)
throw new Error('"dkLen" must be >= 1');
this.leafLen = leafLen;
this.personalization =
opts.personalization === undefined
? EMPTY_BUFFER
: copyBytes(abytes(opts.personalization, undefined, 'personalization'));
}
update(data) {
abytes(data);
const { chunkLen, blockLen, leafLen, rounds } = this;
for (let pos = 0, len = data.length; pos < len;) {
if (this.chunkPos == chunkLen) {
if (this.leafHash)
super.update(this.leafHash.digest());
else {
// RFC 9861 §3.2 switches from SingleNode (`07`) to FinalNode (`06`)
// once S exceeds 8192 bytes and prefixes S_0 with
// `03 00 00 00 00 00 00 00`.
this.suffix = 0x06; // Its safe to change suffix here since its used only in digest()
super.update(Uint8Array.from([3, 0, 0, 0, 0, 0, 0, 0]));
}
// Secondary chunks S_1..S_(n-1) become fixed-length
// CV_i = TurboSHAKE*(S_i, `0B`, 32|64) chaining values.
this.leafHash = new Keccak(blockLen, 0x0b, leafLen, false, rounds);
this.chunksDone++;
this.chunkPos = 0;
}
const take = Math.min(chunkLen - this.chunkPos, len - pos);
const chunk = data.subarray(pos, pos + take);
if (this.leafHash)
this.leafHash.update(chunk);
else
super.update(chunk);
this.chunkPos += take;
pos += take;
}
return this;
}
finish() {
if (this.finished)
return;
const { personalization } = this;
// RFC 9861 §3.2 forms S = M || C || length_encode(|C|) before any tree hashing logic.
this.update(personalization).update(rightEncodeK12(personalization.length));
// Leaf hash
if (this.leafHash) {
// Multi-chunk K12 appends
// CV_1..CV_(n-1) || length_encode(n-1) || `FF FF`
// before the final TurboSHAKE call.
super.update(this.leafHash.digest());
super.update(rightEncodeK12(this.chunksDone));
super.update(Uint8Array.from([0xff, 0xff]));
}
super.finish.call(this);
}
destroy() {
super.destroy.call(this);
if (this.leafHash)
this.leafHash.destroy();
// Personalization is copied on create/clone, so destroy can wipe it
// without touching caller input.
if (this.personalization !== EMPTY_BUFFER)
clean(this.personalization);
this.personalization = EMPTY_BUFFER;
}
_cloneInto(to) {
const { blockLen, leafLen, leafHash, outputLen, rounds } = this;
const personalization = this.personalization === EMPTY_BUFFER ? EMPTY_BUFFER : copyBytes(this.personalization);
// Personalization is absorbed only during finish(), so clones need the same pending value.
to ||= new _KangarooTwelve(blockLen, leafLen, outputLen, rounds, {
personalization,
});
super._cloneInto(to);
// Reused destinations can carry a stale leaf from an older multi-chunk state.
if (leafHash)
to.leafHash = leafHash._cloneInto(to.leafHash);
else if (to.leafHash) {
to.leafHash.destroy();
to.leafHash = undefined;
}
// Snapshot the pending personalization so clone state does not alias caller-owned input.
to.personalization = personalization;
to.leafLen = this.leafLen;
to.chunkPos = this.chunkPos;
to.chunksDone = this.chunksDone;
return to;
}
clone() {
return this._cloneInto();
}
}
/**
* 128-bit KangarooTwelve (k12): reduced 12-round keccak.
* @param msg - message bytes to hash
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link KangarooOpts}.
* @returns Digest bytes.
* @example
* Hash a message with KangarooTwelve-128.
* ```ts
* kt128(new Uint8Array([1, 2, 3]));
* ```
*/
export const kt128 = /* @__PURE__ */ createHasher((opts = {}) => new _KangarooTwelve(168, 32, chooseLen(opts, 32), 12, opts));
/**
* 256-bit KangarooTwelve (k12): reduced 12-round keccak.
* @param msg - message bytes to hash
* @param opts - Optional output and personalization settings. Defaults to
* 64 output bytes when `dkLen` is omitted. See {@link KangarooOpts}.
* @returns Digest bytes.
* @example
* Hash a message with KangarooTwelve-256.
* ```ts
* kt256(new Uint8Array([1, 2, 3]));
* ```
*/
export const kt256 = /* @__PURE__ */ createHasher((opts = {}) => new _KangarooTwelve(136, 64, chooseLen(opts, 64), 12, opts));
const genHopMAC = (hash) => (key, message, personalization, dkLen) => {
const h = hash;
return h(key, { personalization: h(message, { personalization }), dkLen });
};
/**
* 128-bit KangarooTwelve-based MAC.
*
* These untested (there is no test vectors or implementation available). Use at your own risk.
* HopMAC128(Key, M, C, L) = KT128(Key, KT128(M, C, 32), L)
* HopMAC256(Key, M, C, L) = KT256(Key, KT256(M, C, 64), L)
* The inner KangarooTwelve call always uses a fixed 32-byte digest here,
* regardless of the outer `dkLen`.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param personalization - personalization bytes mixed into the inner hash
* @param dkLen - optional output length in bytes
* @returns Authentication tag bytes.
* @example
* Authenticate a message with HopMAC128.
* ```ts
* HopMAC128(new Uint8Array([1]), new Uint8Array([2]), new Uint8Array([3]), 32);
* ```
*/
export const HopMAC128 = /* @__PURE__ */ genHopMAC(kt128);
/**
* 256-bit KangarooTwelve-based MAC.
* Like `HopMAC128`, there are no test vectors or known independent
* implementations available for cross-checking.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param personalization - personalization bytes mixed into the inner hash
* @param dkLen - optional output length in bytes. The inner KangarooTwelve
* call still uses a fixed 64-byte digest here, regardless of the outer
* `dkLen`.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with HopMAC256.
* ```ts
* HopMAC256(new Uint8Array([1]), new Uint8Array([2]), new Uint8Array([3]), 64);
* ```
*/
export const HopMAC256 = /* @__PURE__ */ genHopMAC(kt256);
/**
* More at
* {@link https://github.com/XKCP/XKCP/tree/master/lib/high/Keccak/PRG}.
* Accepted capacities must keep `rho = 1598 - capacity` byte-aligned, and
* `.clean()` later also requires `rate > 801`.
*/
export class _KeccakPRG extends Keccak {
rate;
constructor(capacity) {
anumber(capacity);
const rate = 1600 - capacity;
const rho = rate - 2;
// Rho must be full bytes
if (capacity < 0 || capacity > 1600 - 10 || rho % 8)
throw new Error('invalid capacity');
// blockLen = rho in bytes
super(rho / 8, 0, 0, true);
this.rate = rate;
this.posOut = Math.floor((rate + 7) / 8);
}
keccak() {
// Duplex padding
this.state[this.pos] ^= 0x01;
this.state[this.blockLen] ^= 0x02; // Rho is full bytes
super.keccak();
this.pos = 0;
this.posOut = 0;
}
update(data) {
super.update(data);
this.posOut = this.blockLen;
return this;
}
finish() { }
digestInto(_out) {
throw new Error('digest is not allowed, use .randomBytes() instead');
}
addEntropy(seed) {
this.update(seed);
}
randomBytes(length) {
return this.xof(length);
}
clean() {
// clean() mutates live sponge state just like randomBytes(),
// so destroyed instances must reject it.
aexists(this, false);
if (this.rate < 1600 / 2 + 1)
throw new Error('rate is too low to use .forget()');
this.keccak();
for (let i = 0; i < this.blockLen; i++)
this.state[i] = 0;
this.pos = this.blockLen;
this.keccak();
this.posOut = this.blockLen;
}
_cloneInto(to) {
const { rate } = this;
to ||= new _KeccakPRG(1600 - rate);
super._cloneInto(to);
to.rate = rate;
return to;
}
clone() {
return this._cloneInto();
}
}
/**
* KeccakPRG: pseudo-random generator based on Keccak.
* See {@link https://keccak.team/files/CSF-0.1.pdf}.
* @param capacity - sponge capacity in bits. Accepted values are those that
* keep `rho = 1598 - capacity` byte-aligned; the default `254` is chosen
* because it satisfies that duplex layout while leaving a wide byte-aligned
* rate.
* @returns PRG instance backed by a Keccak sponge.
* @example
* Create a Keccak-based pseudorandom generator and read bytes from it.
* ```ts
* const prg = keccakprg(254);
* prg.randomBytes(8);
* ```
*/
export const keccakprg = (capacity = 254) => new _KeccakPRG(capacity);
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import { type CHash, type CHashXOF, type Hash, type HashXOF, type TArg, type TRet } from './utils.ts';
/**
* `keccakf1600` internal permutation, additionally allows adjusting the round count.
* @param s - 5x5 Keccak state encoded as 25 lanes split into 50 uint32 words
* in this file's local little-endian lane-word order
* @param rounds - number of rounds to execute
* @throws If `rounds` is outside the supported `1..24` range. {@link Error}
* @example
* Permute a Keccak state with the default 24 rounds.
* ```ts
* keccakP(new Uint32Array(50));
* ```
*/
export declare function keccakP(s: TArg<Uint32Array>, rounds?: number): void;
/**
* Keccak sponge function.
* @param blockLen - absorb/squeeze rate in bytes
* @param suffix - domain separation suffix byte
* @param outputLen - default digest length in bytes. This base sponge only
* requires a non-negative integer; wrappers that need positive output
* lengths must enforce that themselves.
* @param enableXOF - whether XOF output is allowed
* @param rounds - number of Keccak-f rounds
* @example
* Build a sponge state, absorb bytes, then finalize a digest.
* ```ts
* const hash = new Keccak(136, 0x06, 32);
* hash.update(new Uint8Array([1, 2, 3]));
* hash.digest();
* ```
*/
export declare class Keccak implements Hash<Keccak>, HashXOF<Keccak> {
protected state: Uint8Array;
protected pos: number;
protected posOut: number;
protected finished: boolean;
protected state32: Uint32Array;
protected destroyed: boolean;
blockLen: number;
suffix: number;
outputLen: number;
canXOF: boolean;
protected enableXOF: boolean;
protected rounds: number;
constructor(blockLen: number, suffix: number, outputLen: number, enableXOF?: boolean, rounds?: number);
clone(): Keccak;
protected keccak(): void;
update(data: TArg<Uint8Array>): this;
protected finish(): void;
protected writeInto(out: TArg<Uint8Array>): TRet<Uint8Array>;
xofInto(out: TArg<Uint8Array>): TRet<Uint8Array>;
xof(bytes: number): TRet<Uint8Array>;
digestInto(out: TArg<Uint8Array>): void;
digest(): TRet<Uint8Array>;
destroy(): void;
_cloneInto(to?: Keccak): Keccak;
}
/**
* SHA3-224 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA3-224.
* ```ts
* sha3_224(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const sha3_224: TRet<CHash>;
/**
* SHA3-256 hash function. Different from keccak-256.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA3-256.
* ```ts
* sha3_256(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const sha3_256: TRet<CHash>;
/**
* SHA3-384 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA3-384.
* ```ts
* sha3_384(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const sha3_384: TRet<CHash>;
/**
* SHA3-512 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA3-512.
* ```ts
* sha3_512(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const sha3_512: TRet<CHash>;
/**
* Keccak-224 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with Keccak-224.
* ```ts
* keccak_224(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const keccak_224: TRet<CHash>;
/**
* Keccak-256 hash function. Different from SHA3-256.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with Keccak-256.
* ```ts
* keccak_256(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const keccak_256: TRet<CHash>;
/**
* Keccak-384 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with Keccak-384.
* ```ts
* keccak_384(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const keccak_384: TRet<CHash>;
/**
* Keccak-512 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with Keccak-512.
* ```ts
* keccak_512(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const keccak_512: TRet<CHash>;
/** Options for SHAKE XOF. */
export type ShakeOpts = {
/** Desired number of output bytes. */
dkLen?: number;
};
/**
* SHAKE128 XOF with 128-bit security and a 16-byte default output.
* @param msg - message bytes to hash
* @param opts - Optional output-length override. See {@link ShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with SHAKE128.
* ```ts
* shake128(new Uint8Array([97, 98, 99]), { dkLen: 32 });
* ```
*/
export declare const shake128: TRet<CHashXOF<Keccak, ShakeOpts>>;
/**
* SHAKE256 XOF with 256-bit security and a 32-byte default output.
* @param msg - message bytes to hash
* @param opts - Optional output-length override. See {@link ShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with SHAKE256.
* ```ts
* shake256(new Uint8Array([97, 98, 99]), { dkLen: 64 });
* ```
*/
export declare const shake256: TRet<CHashXOF<Keccak, ShakeOpts>>;
/**
* SHAKE128 XOF with 256-bit output (NIST version).
* @param msg - message bytes to hash
* @param opts - Optional output-length override. See {@link ShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with SHAKE128 using a 32-byte default output.
* ```ts
* shake128_32(new Uint8Array([97, 98, 99]), { dkLen: 32 });
* ```
*/
export declare const shake128_32: TRet<CHashXOF<Keccak, ShakeOpts>>;
/**
* SHAKE256 XOF with 512-bit output (NIST version).
* @param msg - message bytes to hash
* @param opts - Optional output-length override. See {@link ShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with SHAKE256 using a 64-byte default output.
* ```ts
* shake256_64(new Uint8Array([97, 98, 99]), { dkLen: 64 });
* ```
*/
export declare const shake256_64: TRet<CHashXOF<Keccak, ShakeOpts>>;
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/**
* SHA3 (keccak) hash function, based on a new "Sponge function" design.
* Different from older hashes, the internal state is bigger than output size.
*
* Check out
* {@link https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.202.pdf | FIPS-202},
* {@link https://keccak.team/keccak.html | Website}, and
* {@link https://crypto.stackexchange.com/q/15727 | the differences between
* SHA-3 and Keccak}.
*
* Check out `sha3-addons` module for cSHAKE, k12, and others.
* @module
*/
import { rotlBH, rotlBL, rotlSH, rotlSL, split } from "./_u64.js";
// prettier-ignore
import { abytes, aexists, anumber, aoutput, clean, createHasher, oidNist, swap32IfBE, u32 } from "./utils.js";
// No __PURE__ annotations in sha3 header:
// EVERYTHING is in fact used on every export.
// Various per round constants calculations
const _0n = BigInt(0);
const _1n = BigInt(1);
const _2n = BigInt(2);
const _7n = BigInt(7);
const _256n = BigInt(256);
// FIPS 202 Algorithm 5 rc(): when the outgoing bit is 1, the 8-bit LFSR xors
// taps 0, 4, 5, and 6, which compresses to the feedback mask `0x71`.
const _0x71n = BigInt(0x71);
const SHA3_PI = [];
const SHA3_ROTL = [];
const _SHA3_IOTA = []; // no pure annotation: var is always used
for (let round = 0, R = _1n, x = 1, y = 0; round < 24; round++) {
// Pi
[x, y] = [y, (2 * x + 3 * y) % 5];
SHA3_PI.push(2 * (5 * y + x));
// Rotational
SHA3_ROTL.push((((round + 1) * (round + 2)) / 2) % 64);
// Iota
let t = _0n;
for (let j = 0; j < 7; j++) {
R = ((R << _1n) ^ ((R >> _7n) * _0x71n)) % _256n;
if (R & _2n)
t ^= _1n << ((_1n << BigInt(j)) - _1n);
}
_SHA3_IOTA.push(t);
}
const IOTAS = split(_SHA3_IOTA, true);
// `split(..., true)` keeps the local little-endian lane-word layout used by
// `state32`, so these `H` / `L` tables follow the file's first-word /
// second-word lane slots rather than `_u64.ts`'s usual high/low naming.
const SHA3_IOTA_H = IOTAS[0];
const SHA3_IOTA_L = IOTAS[1];
// Left rotation (without 0, 32, 64)
const rotlH = (h, l, s) => (s > 32 ? rotlBH(h, l, s) : rotlSH(h, l, s));
const rotlL = (h, l, s) => (s > 32 ? rotlBL(h, l, s) : rotlSL(h, l, s));
/**
* `keccakf1600` internal permutation, additionally allows adjusting the round count.
* @param s - 5x5 Keccak state encoded as 25 lanes split into 50 uint32 words
* in this file's local little-endian lane-word order
* @param rounds - number of rounds to execute
* @throws If `rounds` is outside the supported `1..24` range. {@link Error}
* @example
* Permute a Keccak state with the default 24 rounds.
* ```ts
* keccakP(new Uint32Array(50));
* ```
*/
export function keccakP(s, rounds = 24) {
anumber(rounds, 'rounds');
// This implementation precomputes only the standard Keccak-f[1600] 24-round Iota table.
if (rounds < 1 || rounds > 24)
throw new Error('"rounds" expected integer 1..24');
const B = new Uint32Array(5 * 2);
// NOTE: all indices are x2 since we store state as u32 instead of u64 (bigints to slow in js)
for (let round = 24 - rounds; round < 24; round++) {
// Theta θ
for (let x = 0; x < 10; x++)
B[x] = s[x] ^ s[x + 10] ^ s[x + 20] ^ s[x + 30] ^ s[x + 40];
for (let x = 0; x < 10; x += 2) {
const idx1 = (x + 8) % 10;
const idx0 = (x + 2) % 10;
const B0 = B[idx0];
const B1 = B[idx0 + 1];
const Th = rotlH(B0, B1, 1) ^ B[idx1];
const Tl = rotlL(B0, B1, 1) ^ B[idx1 + 1];
for (let y = 0; y < 50; y += 10) {
s[x + y] ^= Th;
s[x + y + 1] ^= Tl;
}
}
// Rho (ρ) and Pi (π)
let curH = s[2];
let curL = s[3];
for (let t = 0; t < 24; t++) {
const shift = SHA3_ROTL[t];
const Th = rotlH(curH, curL, shift);
const Tl = rotlL(curH, curL, shift);
const PI = SHA3_PI[t];
curH = s[PI];
curL = s[PI + 1];
s[PI] = Th;
s[PI + 1] = Tl;
}
// Chi (χ)
// Same as:
// for (let x = 0; x < 10; x++) B[x] = s[y + x];
// for (let x = 0; x < 10; x++) s[y + x] ^= ~B[(x + 2) % 10] & B[(x + 4) % 10];
for (let y = 0; y < 50; y += 10) {
const b0 = s[y], b1 = s[y + 1], b2 = s[y + 2], b3 = s[y + 3];
s[y] ^= ~s[y + 2] & s[y + 4];
s[y + 1] ^= ~s[y + 3] & s[y + 5];
s[y + 2] ^= ~s[y + 4] & s[y + 6];
s[y + 3] ^= ~s[y + 5] & s[y + 7];
s[y + 4] ^= ~s[y + 6] & s[y + 8];
s[y + 5] ^= ~s[y + 7] & s[y + 9];
s[y + 6] ^= ~s[y + 8] & b0;
s[y + 7] ^= ~s[y + 9] & b1;
s[y + 8] ^= ~b0 & b2;
s[y + 9] ^= ~b1 & b3;
}
// Iota (ι)
s[0] ^= SHA3_IOTA_H[round];
s[1] ^= SHA3_IOTA_L[round];
}
clean(B);
}
/**
* Keccak sponge function.
* @param blockLen - absorb/squeeze rate in bytes
* @param suffix - domain separation suffix byte
* @param outputLen - default digest length in bytes. This base sponge only
* requires a non-negative integer; wrappers that need positive output
* lengths must enforce that themselves.
* @param enableXOF - whether XOF output is allowed
* @param rounds - number of Keccak-f rounds
* @example
* Build a sponge state, absorb bytes, then finalize a digest.
* ```ts
* const hash = new Keccak(136, 0x06, 32);
* hash.update(new Uint8Array([1, 2, 3]));
* hash.digest();
* ```
*/
export class Keccak {
state;
pos = 0;
posOut = 0;
finished = false;
state32;
destroyed = false;
blockLen;
suffix;
outputLen;
canXOF;
enableXOF = false;
rounds;
// NOTE: we accept arguments in bytes instead of bits here.
constructor(blockLen, suffix, outputLen, enableXOF = false, rounds = 24) {
this.blockLen = blockLen;
this.suffix = suffix;
this.outputLen = outputLen;
this.enableXOF = enableXOF;
this.canXOF = enableXOF;
this.rounds = rounds;
// Can be passed from user as dkLen
anumber(outputLen, 'outputLen');
// 1600 = 5x5 matrix of 64bit. 1600 bits === 200 bytes
// 0 < blockLen < 200
if (!(0 < blockLen && blockLen < 200))
throw new Error('only keccak-f1600 function is supported');
this.state = new Uint8Array(200);
this.state32 = u32(this.state);
}
clone() {
return this._cloneInto();
}
keccak() {
swap32IfBE(this.state32);
keccakP(this.state32, this.rounds);
swap32IfBE(this.state32);
this.posOut = 0;
this.pos = 0;
}
update(data) {
aexists(this);
abytes(data);
const { blockLen, state } = this;
const len = data.length;
for (let pos = 0; pos < len;) {
const take = Math.min(blockLen - this.pos, len - pos);
for (let i = 0; i < take; i++)
state[this.pos++] ^= data[pos++];
if (this.pos === blockLen)
this.keccak();
}
return this;
}
finish() {
if (this.finished)
return;
this.finished = true;
const { state, suffix, pos, blockLen } = this;
// FIPS 202 appends the SHA3/SHAKE domain-separation suffix before pad10*1.
// These byte values already include the first padding bit, while the
// final `0x80` below supplies the closing `1` bit in the last rate byte.
state[pos] ^= suffix;
// If that combined suffix lands in the last rate byte and already sets
// bit 7, absorb it first so the final pad10*1 bit can be xored into a
// fresh block.
if ((suffix & 0x80) !== 0 && pos === blockLen - 1)
this.keccak();
state[blockLen - 1] ^= 0x80;
this.keccak();
}
writeInto(out) {
aexists(this, false);
abytes(out);
this.finish();
const bufferOut = this.state;
const { blockLen } = this;
for (let pos = 0, len = out.length; pos < len;) {
if (this.posOut >= blockLen)
this.keccak();
const take = Math.min(blockLen - this.posOut, len - pos);
out.set(bufferOut.subarray(this.posOut, this.posOut + take), pos);
this.posOut += take;
pos += take;
}
return out;
}
xofInto(out) {
// Plain SHA3/Keccak usage with XOF is probably a mistake, but this base
// class is also reused by SHAKE/cSHAKE/KMAC/TupleHash/ParallelHash/
// TurboSHAKE/KangarooTwelve wrappers that intentionally enable XOF.
if (!this.enableXOF)
throw new Error('XOF is not possible for this instance');
return this.writeInto(out);
}
xof(bytes) {
anumber(bytes);
return this.xofInto(new Uint8Array(bytes));
}
digestInto(out) {
aoutput(out, this);
if (this.finished)
throw new Error('digest() was already called');
// `aoutput(...)` allows oversized buffers; digestInto() must fill only the advertised digest.
this.writeInto(out.subarray(0, this.outputLen));
this.destroy();
}
digest() {
const out = new Uint8Array(this.outputLen);
this.digestInto(out);
return out;
}
destroy() {
this.destroyed = true;
clean(this.state);
}
_cloneInto(to) {
const { blockLen, suffix, outputLen, rounds, enableXOF } = this;
to ||= new Keccak(blockLen, suffix, outputLen, enableXOF, rounds);
// Reused destinations can come from a different rate/capacity variant, so clone must rewrite
// the sponge geometry as well as the state words.
to.blockLen = blockLen;
to.state32.set(this.state32);
to.pos = this.pos;
to.posOut = this.posOut;
to.finished = this.finished;
to.rounds = rounds;
// Suffix can change in cSHAKE
to.suffix = suffix;
to.outputLen = outputLen;
to.enableXOF = enableXOF;
// Clones must preserve the public capability bit too; `_KMAC` reuses this path and deep clone
// tests compare instance fields directly, so leaving `canXOF` behind makes the clone lie.
to.canXOF = this.canXOF;
to.destroyed = this.destroyed;
return to;
}
}
const genKeccak = (suffix, blockLen, outputLen, info = {}) => createHasher(() => new Keccak(blockLen, suffix, outputLen), info);
/**
* SHA3-224 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA3-224.
* ```ts
* sha3_224(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha3_224 = /* @__PURE__ */ genKeccak(0x06, 144, 28,
/* @__PURE__ */ oidNist(0x07));
/**
* SHA3-256 hash function. Different from keccak-256.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA3-256.
* ```ts
* sha3_256(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha3_256 = /* @__PURE__ */ genKeccak(0x06, 136, 32,
/* @__PURE__ */ oidNist(0x08));
/**
* SHA3-384 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA3-384.
* ```ts
* sha3_384(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha3_384 = /* @__PURE__ */ genKeccak(0x06, 104, 48,
/* @__PURE__ */ oidNist(0x09));
/**
* SHA3-512 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA3-512.
* ```ts
* sha3_512(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha3_512 = /* @__PURE__ */ genKeccak(0x06, 72, 64,
/* @__PURE__ */ oidNist(0x0a));
/**
* Keccak-224 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with Keccak-224.
* ```ts
* keccak_224(new Uint8Array([97, 98, 99]));
* ```
*/
export const keccak_224 = /* @__PURE__ */ genKeccak(0x01, 144, 28);
/**
* Keccak-256 hash function. Different from SHA3-256.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with Keccak-256.
* ```ts
* keccak_256(new Uint8Array([97, 98, 99]));
* ```
*/
export const keccak_256 = /* @__PURE__ */ genKeccak(0x01, 136, 32);
/**
* Keccak-384 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with Keccak-384.
* ```ts
* keccak_384(new Uint8Array([97, 98, 99]));
* ```
*/
export const keccak_384 = /* @__PURE__ */ genKeccak(0x01, 104, 48);
/**
* Keccak-512 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with Keccak-512.
* ```ts
* keccak_512(new Uint8Array([97, 98, 99]));
* ```
*/
export const keccak_512 = /* @__PURE__ */ genKeccak(0x01, 72, 64);
const genShake = (suffix, blockLen, outputLen, info = {}) => createHasher((opts = {}) => new Keccak(blockLen, suffix, opts.dkLen === undefined ? outputLen : opts.dkLen, true), info);
/**
* SHAKE128 XOF with 128-bit security and a 16-byte default output.
* @param msg - message bytes to hash
* @param opts - Optional output-length override. See {@link ShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with SHAKE128.
* ```ts
* shake128(new Uint8Array([97, 98, 99]), { dkLen: 32 });
* ```
*/
export const shake128 =
/* @__PURE__ */
genShake(0x1f, 168, 16, /* @__PURE__ */ oidNist(0x0b));
/**
* SHAKE256 XOF with 256-bit security and a 32-byte default output.
* @param msg - message bytes to hash
* @param opts - Optional output-length override. See {@link ShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with SHAKE256.
* ```ts
* shake256(new Uint8Array([97, 98, 99]), { dkLen: 64 });
* ```
*/
export const shake256 =
/* @__PURE__ */
genShake(0x1f, 136, 32, /* @__PURE__ */ oidNist(0x0c));
/**
* SHAKE128 XOF with 256-bit output (NIST version).
* @param msg - message bytes to hash
* @param opts - Optional output-length override. See {@link ShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with SHAKE128 using a 32-byte default output.
* ```ts
* shake128_32(new Uint8Array([97, 98, 99]), { dkLen: 32 });
* ```
*/
export const shake128_32 =
/* @__PURE__ */
genShake(0x1f, 168, 32, /* @__PURE__ */ oidNist(0x0b));
/**
* SHAKE256 XOF with 512-bit output (NIST version).
* @param msg - message bytes to hash
* @param opts - Optional output-length override. See {@link ShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with SHAKE256 using a 64-byte default output.
* ```ts
* shake256_64(new Uint8Array([97, 98, 99]), { dkLen: 64 });
* ```
*/
export const shake256_64 =
/* @__PURE__ */
genShake(0x1f, 136, 64, /* @__PURE__ */ oidNist(0x0c));
//# sourceMappingURL=sha3.js.map

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/**
* Internal helpers for blake hash.
* @module
*/
import { rotr, type TRet } from './utils.ts';
/**
* Internal blake permutation table.
* Rows `0..9` serve BLAKE2s, rows `0..11` serve BLAKE2b with `10..11 = 0..1`, and Blake1 also
* reuses the later rows shown below. Blake1 expands rounds `10..15` as `SIGMA[i % 10]`, so rows
* `10..15` intentionally repeat rows `0..5` for the 14-round (256) and 16-round (512) variants.
*/
// prettier-ignore
export const BSIGMA: TRet<Uint8Array> = /* @__PURE__ */ Uint8Array.from([
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3,
11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4,
7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8,
9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13,
2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9,
12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11,
13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10,
6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5,
10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3,
// Blake1, unused in others
11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4,
7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8,
9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13,
2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9,
]);
// prettier-ignore
export type Num4 = { a: number; b: number; c: number; d: number; };
// 32-bit / BLAKE2s first half of G, with the fixed `(16, 12)` rotation pair.
// Parameter `x` is the RFC 7693 first-half message word, or Blake1's pre-mixed
// `m[sigma[r][2i]] ^ u[sigma[r][2i+1]]` addend in the 32-bit path.
export function G1s(a: number, b: number, c: number, d: number, x: number): Num4 {
a = (a + b + x) | 0;
d = rotr(d ^ a, 16);
c = (c + d) | 0;
b = rotr(b ^ c, 12);
return { a, b, c, d };
}
// 32-bit / BLAKE2s second half of G.
// Parameter `x` is the RFC 7693 second-half (`y`) message word, or Blake1's pre-mixed
// `m[sigma[r][2i + 1]] ^ u[sigma[r][2i]]` addend in the 32-bit path.
export function G2s(a: number, b: number, c: number, d: number, x: number): Num4 {
a = (a + b + x) | 0;
d = rotr(d ^ a, 8);
c = (c + d) | 0;
b = rotr(b ^ c, 7);
return { a, b, c, d };
}

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/**
* Internal Merkle-Damgard hash utils.
* @module
*/
import {
abytes,
aexists,
aoutput,
clean,
createView,
type Hash,
type TArg,
type TRet,
} from './utils.ts';
/**
* Shared 32-bit conditional boolean primitive reused by SHA-256, SHA-1, and MD5 `F`.
* Returns bits from `b` when `a` is set, otherwise from `c`.
* The XOR form is equivalent to MD5's `F(X,Y,Z) = XY v not(X)Z` because the masked terms never
* set the same bit.
* @param a - selector word
* @param b - word chosen when selector bit is set
* @param c - word chosen when selector bit is clear
* @returns Mixed 32-bit word.
* @example
* Combine three words with the shared 32-bit choice primitive.
* ```ts
* Chi(0xffffffff, 0x12345678, 0x87654321);
* ```
*/
export function Chi(a: number, b: number, c: number): number {
return (a & b) ^ (~a & c);
}
/**
* Shared 32-bit majority primitive reused by SHA-256 and SHA-1.
* Returns bits shared by at least two inputs.
* @param a - first input word
* @param b - second input word
* @param c - third input word
* @returns Mixed 32-bit word.
* @example
* Combine three words with the shared 32-bit majority primitive.
* ```ts
* Maj(0xffffffff, 0x12345678, 0x87654321);
* ```
*/
export function Maj(a: number, b: number, c: number): number {
return (a & b) ^ (a & c) ^ (b & c);
}
/**
* Merkle-Damgard hash construction base class.
* Could be used to create MD5, RIPEMD, SHA1, SHA2.
* Accepts only byte-aligned `Uint8Array` input, even when the underlying spec describes bit
* strings with partial-byte tails.
* @param blockLen - internal block size in bytes
* @param outputLen - digest size in bytes
* @param padOffset - trailing length field size in bytes
* @param isLE - whether length and state words are encoded in little-endian
* @example
* Use a concrete subclass to get the shared Merkle-Damgard update/digest flow.
* ```ts
* import { _SHA1 } from '@noble/hashes/legacy.js';
* const hash = new _SHA1();
* hash.update(new Uint8Array([97, 98, 99]));
* hash.digest();
* ```
*/
export abstract class HashMD<T extends HashMD<T>> implements Hash<T> {
// Subclasses must treat `buf` as read-only: `update()` may pass a direct view over caller input
// when it can process whole blocks without buffering first.
protected abstract process(buf: DataView, offset: number): void;
protected abstract get(): number[];
protected abstract set(...args: number[]): void;
abstract destroy(): void;
protected abstract roundClean(): void;
readonly blockLen: number;
readonly outputLen: number;
readonly canXOF = false;
readonly padOffset: number;
readonly isLE: boolean;
// For partial updates less than block size
protected buffer: Uint8Array;
protected view: DataView;
protected finished = false;
protected length = 0;
protected pos = 0;
protected destroyed = false;
constructor(blockLen: number, outputLen: number, padOffset: number, isLE: boolean) {
this.blockLen = blockLen;
this.outputLen = outputLen;
this.padOffset = padOffset;
this.isLE = isLE;
this.buffer = new Uint8Array(blockLen);
this.view = createView(this.buffer);
}
update(data: TArg<Uint8Array>): this {
aexists(this);
abytes(data);
const { view, buffer, blockLen } = this;
const len = data.length;
for (let pos = 0; pos < len; ) {
const take = Math.min(blockLen - this.pos, len - pos);
// Fast path only when there is no buffered partial block: `take === blockLen` implies
// `this.pos === 0`, so we can process full blocks directly from the input view.
if (take === blockLen) {
const dataView = createView(data);
for (; blockLen <= len - pos; pos += blockLen) this.process(dataView, pos);
continue;
}
buffer.set(data.subarray(pos, pos + take), this.pos);
this.pos += take;
pos += take;
if (this.pos === blockLen) {
this.process(view, 0);
this.pos = 0;
}
}
this.length += data.length;
this.roundClean();
return this;
}
digestInto(out: TArg<Uint8Array>): void {
aexists(this);
aoutput(out, this);
this.finished = true;
// Padding
// We can avoid allocation of buffer for padding completely if it
// was previously not allocated here. But it won't change performance.
const { buffer, view, blockLen, isLE } = this;
let { pos } = this;
// append the bit '1' to the message
buffer[pos++] = 0b10000000;
clean(this.buffer.subarray(pos));
// we have less than padOffset left in buffer, so we cannot put length in
// current block, need process it and pad again
if (this.padOffset > blockLen - pos) {
this.process(view, 0);
pos = 0;
}
// Pad until full block byte with zeros
for (let i = pos; i < blockLen; i++) buffer[i] = 0;
// `padOffset` reserves the whole length field. For SHA-384/512 the high 64 bits stay zero from
// the padding fill above, and JS will overflow before user input can make that half non-zero.
// So we only need to write the low 64 bits here.
view.setBigUint64(blockLen - 8, BigInt(this.length * 8), isLE);
this.process(view, 0);
const oview = createView(out);
const len = this.outputLen;
// NOTE: we do division by 4 later, which must be fused in single op with modulo by JIT
if (len % 4) throw new Error('_sha2: outputLen must be aligned to 32bit');
const outLen = len / 4;
const state = this.get();
if (outLen > state.length) throw new Error('_sha2: outputLen bigger than state');
for (let i = 0; i < outLen; i++) oview.setUint32(4 * i, state[i], isLE);
}
digest(): TRet<Uint8Array> {
const { buffer, outputLen } = this;
this.digestInto(buffer);
// Copy before destroy(): subclasses wipe `buffer` during cleanup, but `digest()` must return
// fresh bytes to the caller.
const res = buffer.slice(0, outputLen);
this.destroy();
return res as TRet<Uint8Array>;
}
_cloneInto(to?: T): T {
to ||= new (this.constructor as any)() as T;
to.set(...this.get());
const { blockLen, buffer, length, finished, destroyed, pos } = this;
to.destroyed = destroyed;
to.finished = finished;
to.length = length;
to.pos = pos;
// Only partial-block bytes need copying: when `length % blockLen === 0`, `pos === 0` and
// later `update()` / `digestInto()` overwrite `to.buffer` from the start before reading it.
if (length % blockLen) to.buffer.set(buffer);
return to as unknown as any;
}
clone(): T {
return this._cloneInto();
}
}
/**
* Initial SHA-2 state: fractional parts of square roots of first 16 primes 2..53.
* Check out `test/misc/sha2-gen-iv.js` for recomputation guide.
*/
/** Initial SHA256 state from RFC 6234 §6.1: the first 32 bits of the fractional parts of the
* square roots of the first eight prime numbers. Exported as a shared table; callers must treat
* it as read-only because constructors copy words from it by index. */
export const SHA256_IV: TRet<Uint32Array> = /* @__PURE__ */ Uint32Array.from([
0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19,
]);
/** Initial SHA224 state `H(0)` from RFC 6234 §6.1. Exported as a shared table; callers must
* treat it as read-only because constructors copy words from it by index. */
export const SHA224_IV: TRet<Uint32Array> = /* @__PURE__ */ Uint32Array.from([
0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939, 0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4,
]);
/** Initial SHA384 state from RFC 6234 §6.3: eight RFC 64-bit `H(0)` words stored as sixteen
* big-endian 32-bit halves. Derived from the fractional parts of the square roots of the ninth
* through sixteenth prime numbers. Exported as a shared table; callers must treat it as read-only
* because constructors copy halves from it by index. */
export const SHA384_IV: TRet<Uint32Array> = /* @__PURE__ */ Uint32Array.from([
0xcbbb9d5d, 0xc1059ed8, 0x629a292a, 0x367cd507, 0x9159015a, 0x3070dd17, 0x152fecd8, 0xf70e5939,
0x67332667, 0xffc00b31, 0x8eb44a87, 0x68581511, 0xdb0c2e0d, 0x64f98fa7, 0x47b5481d, 0xbefa4fa4,
]);
/** Initial SHA512 state from RFC 6234 §6.3: eight RFC 64-bit `H(0)` words stored as sixteen
* big-endian 32-bit halves. Derived from the fractional parts of the square roots of the first
* eight prime numbers. Exported as a shared table; callers must treat it as read-only because
* constructors copy halves from it by index. */
export const SHA512_IV: TRet<Uint32Array> = /* @__PURE__ */ Uint32Array.from([
0x6a09e667, 0xf3bcc908, 0xbb67ae85, 0x84caa73b, 0x3c6ef372, 0xfe94f82b, 0xa54ff53a, 0x5f1d36f1,
0x510e527f, 0xade682d1, 0x9b05688c, 0x2b3e6c1f, 0x1f83d9ab, 0xfb41bd6b, 0x5be0cd19, 0x137e2179,
]);

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/**
* Internal helpers for u64.
* BigUint64Array is too slow as per 2026, so we implement it using
* Uint32Array.
* @privateRemarks TODO: re-check {@link https://issues.chromium.org/issues/42212588}
* @module
*/
import type { TRet } from './utils.ts';
const U32_MASK64 = /* @__PURE__ */ BigInt(2 ** 32 - 1);
const _32n = /* @__PURE__ */ BigInt(32);
// Split bigint into two 32-bit halves. With `le=true`, returned fields become `{ h: low, l: high
// }` to match little-endian word order rather than the property names.
function fromBig(
n: bigint,
le = false
): {
h: number;
l: number;
} {
if (le) return { h: Number(n & U32_MASK64), l: Number((n >> _32n) & U32_MASK64) };
return { h: Number((n >> _32n) & U32_MASK64) | 0, l: Number(n & U32_MASK64) | 0 };
}
// Split bigint list into `[highWords, lowWords]` when `le=false`; with `le=true`, the first array
// holds the low halves because `fromBig(...)` swaps the semantic meaning of `h` and `l`.
function split(lst: bigint[], le = false): TRet<Uint32Array[]> {
const len = lst.length;
let Ah = new Uint32Array(len);
let Al = new Uint32Array(len);
for (let i = 0; i < len; i++) {
const { h, l } = fromBig(lst[i], le);
[Ah[i], Al[i]] = [h, l];
}
return [Ah, Al] as TRet<Uint32Array[]>;
}
// Combine explicit `(high, low)` 32-bit halves into a bigint; `>>> 0` normalizes signed JS
// bitwise results back to uint32 first, and little-endian callers must swap.
const toBig = (h: number, l: number): bigint => (BigInt(h >>> 0) << _32n) | BigInt(l >>> 0);
// High 32-bit half of a 64-bit logical right shift for `s` in `0..31`.
const shrSH = (h: number, _l: number, s: number): number => h >>> s;
// Low 32-bit half of a 64-bit logical right shift, valid for `s` in `1..31`.
const shrSL = (h: number, l: number, s: number): number => (h << (32 - s)) | (l >>> s);
// High 32-bit half of a 64-bit right rotate, valid for `s` in `1..31`.
const rotrSH = (h: number, l: number, s: number): number => (h >>> s) | (l << (32 - s));
// Low 32-bit half of a 64-bit right rotate, valid for `s` in `1..31`.
const rotrSL = (h: number, l: number, s: number): number => (h << (32 - s)) | (l >>> s);
// High 32-bit half of a 64-bit right rotate, valid for `s` in `33..63`; `32` uses `rotr32*`.
const rotrBH = (h: number, l: number, s: number): number => (h << (64 - s)) | (l >>> (s - 32));
// Low 32-bit half of a 64-bit right rotate, valid for `s` in `33..63`; `32` uses `rotr32*`.
const rotrBL = (h: number, l: number, s: number): number => (h >>> (s - 32)) | (l << (64 - s));
// High 32-bit half of a 64-bit right rotate for `s === 32`; this is just the swapped low half.
const rotr32H = (_h: number, l: number): number => l;
// Low 32-bit half of a 64-bit right rotate for `s === 32`; this is just the swapped high half.
const rotr32L = (h: number, _l: number): number => h;
// High 32-bit half of a 64-bit left rotate, valid for `s` in `1..31`.
const rotlSH = (h: number, l: number, s: number): number => (h << s) | (l >>> (32 - s));
// Low 32-bit half of a 64-bit left rotate, valid for `s` in `1..31`.
const rotlSL = (h: number, l: number, s: number): number => (l << s) | (h >>> (32 - s));
// High 32-bit half of a 64-bit left rotate, valid for `s` in `33..63`; `32` uses `rotr32*`.
const rotlBH = (h: number, l: number, s: number): number => (l << (s - 32)) | (h >>> (64 - s));
// Low 32-bit half of a 64-bit left rotate, valid for `s` in `33..63`; `32` uses `rotr32*`.
const rotlBL = (h: number, l: number, s: number): number => (h << (s - 32)) | (l >>> (64 - s));
// Add two split 64-bit words and return the split `{ h, l }` sum.
// JS uses 32-bit signed integers for bitwise operations, so we cannot simply shift the carry out
// of the low sum and instead use division.
function add(
Ah: number,
Al: number,
Bh: number,
Bl: number
): {
h: number;
l: number;
} {
const l = (Al >>> 0) + (Bl >>> 0);
return { h: (Ah + Bh + ((l / 2 ** 32) | 0)) | 0, l: l | 0 };
}
// Addition with more than 2 elements
// Unmasked low-word accumulator for 3-way addition; pass the raw result into `add3H(...)`.
const add3L = (Al: number, Bl: number, Cl: number): number => (Al >>> 0) + (Bl >>> 0) + (Cl >>> 0);
// High-word finalize step for 3-way addition; `low` must be the untruncated output of `add3L(...)`.
const add3H = (low: number, Ah: number, Bh: number, Ch: number): number =>
(Ah + Bh + Ch + ((low / 2 ** 32) | 0)) | 0;
// Unmasked low-word accumulator for 4-way addition; pass the raw result into `add4H(...)`.
const add4L = (Al: number, Bl: number, Cl: number, Dl: number): number =>
(Al >>> 0) + (Bl >>> 0) + (Cl >>> 0) + (Dl >>> 0);
// High-word finalize step for 4-way addition; `low` must be the untruncated output of `add4L(...)`.
const add4H = (low: number, Ah: number, Bh: number, Ch: number, Dh: number): number =>
(Ah + Bh + Ch + Dh + ((low / 2 ** 32) | 0)) | 0;
// Unmasked low-word accumulator for 5-way addition; pass the raw result into `add5H(...)`.
const add5L = (Al: number, Bl: number, Cl: number, Dl: number, El: number): number =>
(Al >>> 0) + (Bl >>> 0) + (Cl >>> 0) + (Dl >>> 0) + (El >>> 0);
// High-word finalize step for 5-way addition; `low` must be the untruncated output of `add5L(...)`.
const add5H = (low: number, Ah: number, Bh: number, Ch: number, Dh: number, Eh: number): number =>
(Ah + Bh + Ch + Dh + Eh + ((low / 2 ** 32) | 0)) | 0;
// prettier-ignore
export {
add, add3H, add3L, add4H, add4L, add5H, add5L, fromBig, rotlBH, rotlBL, rotlSH, rotlSL, rotr32H, rotr32L, rotrBH, rotrBL, rotrSH, rotrSL, shrSH, shrSL, split, toBig
};
// Canonical grouped namespace for callers that prefer one object.
// Named exports stay for direct imports.
// prettier-ignore
const u64: { fromBig: typeof fromBig; split: typeof split; toBig: (h: number, l: number) => bigint; shrSH: (h: number, _l: number, s: number) => number; shrSL: (h: number, l: number, s: number) => number; rotrSH: (h: number, l: number, s: number) => number; rotrSL: (h: number, l: number, s: number) => number; rotrBH: (h: number, l: number, s: number) => number; rotrBL: (h: number, l: number, s: number) => number; rotr32H: (_h: number, l: number) => number; rotr32L: (h: number, _l: number) => number; rotlSH: (h: number, l: number, s: number) => number; rotlSL: (h: number, l: number, s: number) => number; rotlBH: (h: number, l: number, s: number) => number; rotlBL: (h: number, l: number, s: number) => number; add: typeof add; add3L: (Al: number, Bl: number, Cl: number) => number; add3H: (low: number, Ah: number, Bh: number, Ch: number) => number; add4L: (Al: number, Bl: number, Cl: number, Dl: number) => number; add4H: (low: number, Ah: number, Bh: number, Ch: number, Dh: number) => number; add5H: (low: number, Ah: number, Bh: number, Ch: number, Dh: number, Eh: number) => number; add5L: (Al: number, Bl: number, Cl: number, Dl: number, El: number) => number; } = {
fromBig, split, toBig,
shrSH, shrSL,
rotrSH, rotrSL, rotrBH, rotrBL,
rotr32H, rotr32L,
rotlSH, rotlSL, rotlBH, rotlBL,
add, add3L, add3H, add4L, add4H, add5H, add5L,
};
// Default export mirrors named `u64` for compatibility with object-style imports.
export default u64;

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/**
* Argon2 KDF from RFC 9106. Can be used to create a key from password and salt.
* We suggest to use Scrypt. JS Argon is 2-10x slower than native code because of 64-bitness:
* * argon uses uint64, but JS doesn't have fast uint64array
* * uint64 multiplication is 1/3 of time
* * `P` function would be very nice with u64, because most of value will be in registers,
* hovewer with u32 it will require 32 registers, which is too much.
* * JS arrays do slow bound checks, so reading from `A2_BUF` slows it down
* @module
*/
import { add3H, add3L, rotr32H, rotr32L, rotrBH, rotrBL, rotrSH, rotrSL } from './_u64.ts';
import { blake2b } from './blake2.ts';
import {
anumber,
clean,
kdfInputToBytes,
nextTick,
swap32IfBE,
swap8IfBE,
u32,
u8,
type KDFInput,
type TArg,
type TRet,
} from './utils.ts';
// RFC 9106 §3.1 type `y`: 0 = Argon2d, 1 = Argon2i, 2 = Argon2id. The numeric values are the
// spec-bound part here; the object keys are internal labels.
const AT = { Argond2d: 0, Argon2i: 1, Argon2id: 2 } as const;
type Types = (typeof AT)[keyof typeof AT];
// RFC 9106 sync points constant `SL = 4`, fixed by the design rather than exposed as a tuning knob.
const ARGON2_SYNC_POINTS = 4;
// Preserve Argon2's `LE32(len(X)) || X` encoding for omitted
// optional fields by emitting empty bytes.
const abytesOrZero = (buf?: TArg<KDFInput>, errorTitle = ''): TRet<Uint8Array> => {
if (buf === undefined) return Uint8Array.of();
return kdfInputToBytes(buf, errorTitle);
};
// Unsigned `u32 * u32 = { h, l }`, returned as split 64-bit halves.
function mul(a: number, b: number) {
// Split into 16-bit limbs so each partial product stays exact under `Math.imul`.
const aL = a & 0xffff;
const aH = a >>> 16;
const bL = b & 0xffff;
const bH = b >>> 16;
const ll = Math.imul(aL, bL);
const hl = Math.imul(aH, bL);
const lh = Math.imul(aL, bH);
const hh = Math.imul(aH, bH);
const carry = (ll >>> 16) + (hl & 0xffff) + lh;
const high = (hh + (hl >>> 16) + (carry >>> 16)) | 0;
const low = (carry << 16) | (ll & 0xffff);
return { h: high, l: low };
}
function mul2(a: number, b: number) {
// Double the split 64-bit product; carry from `l` is folded back into `h` via `l >>> 31`.
const { h, l } = mul(a, b);
return { h: ((h << 1) | (l >>> 31)) & 0xffff_ffff, l: (l << 1) & 0xffff_ffff };
}
// BlaMka permutation for Argon2
// `A + B + 2 * trunc(A) * trunc(B)`, where `trunc(...)` means the low 32-bit halves.
function blamka(Ah: number, Al: number, Bh: number, Bl: number) {
const { h: Ch, l: Cl } = mul2(Al, Bl);
// A + B + (2 * A * B)
const Rll = add3L(Al, Bl, Cl);
return { h: add3H(Rll, Ah, Bh, Ch), l: Rll | 0 };
}
// Temporary block buffer.
// 1024-byte block: 256 u32 = 128 interleaved low/high halves = RFC's
// 8x8 matrix of 16-byte registers.
const A2_BUF = new Uint32Array(256);
// Quarter-round over 64-bit word indices into `A2_BUF`; each index maps to adjacent low/high u32s.
function G(a: number, b: number, c: number, d: number) {
let Al = A2_BUF[2*a], Ah = A2_BUF[2*a + 1]; // prettier-ignore
let Bl = A2_BUF[2*b], Bh = A2_BUF[2*b + 1]; // prettier-ignore
let Cl = A2_BUF[2*c], Ch = A2_BUF[2*c + 1]; // prettier-ignore
let Dl = A2_BUF[2*d], Dh = A2_BUF[2*d + 1]; // prettier-ignore
// RFC 9106 Figure 19 GB rotates by 32, 24, 16, and 63 bits after each XOR step.
({ h: Ah, l: Al } = blamka(Ah, Al, Bh, Bl));
({ Dh, Dl } = { Dh: Dh ^ Ah, Dl: Dl ^ Al });
({ Dh, Dl } = { Dh: rotr32H(Dh, Dl), Dl: rotr32L(Dh, Dl) });
({ h: Ch, l: Cl } = blamka(Ch, Cl, Dh, Dl));
({ Bh, Bl } = { Bh: Bh ^ Ch, Bl: Bl ^ Cl });
({ Bh, Bl } = { Bh: rotrSH(Bh, Bl, 24), Bl: rotrSL(Bh, Bl, 24) });
({ h: Ah, l: Al } = blamka(Ah, Al, Bh, Bl));
({ Dh, Dl } = { Dh: Dh ^ Ah, Dl: Dl ^ Al });
({ Dh, Dl } = { Dh: rotrSH(Dh, Dl, 16), Dl: rotrSL(Dh, Dl, 16) });
({ h: Ch, l: Cl } = blamka(Ch, Cl, Dh, Dl));
({ Bh, Bl } = { Bh: Bh ^ Ch, Bl: Bl ^ Cl });
({ Bh, Bl } = { Bh: rotrBH(Bh, Bl, 63), Bl: rotrBL(Bh, Bl, 63) });
((A2_BUF[2 * a] = Al), (A2_BUF[2 * a + 1] = Ah));
((A2_BUF[2 * b] = Bl), (A2_BUF[2 * b + 1] = Bh));
((A2_BUF[2 * c] = Cl), (A2_BUF[2 * c + 1] = Ch));
((A2_BUF[2 * d] = Dl), (A2_BUF[2 * d + 1] = Dh));
}
// Argon2 permutation over 16 register indices into `A2_BUF`, not the register values themselves.
// RFC 9106 Figure 17: these arguments are the 16 `v0..v15` 64-bit word
// indices inside eight 16-byte inputs, not copied word values.
// prettier-ignore
function P(
v00: number, v01: number, v02: number, v03: number, v04: number, v05: number, v06: number, v07: number,
v08: number, v09: number, v10: number, v11: number, v12: number, v13: number, v14: number, v15: number,
) {
// RFC 9106 Figure 18: first apply GB across rows, then across columns of the 8x8 register matrix.
G(v00, v04, v08, v12);
G(v01, v05, v09, v13);
G(v02, v06, v10, v14);
G(v03, v07, v11, v15);
G(v00, v05, v10, v15);
G(v01, v06, v11, v12);
G(v02, v07, v08, v13);
G(v03, v04, v09, v14);
}
function block(x: TArg<Uint32Array>, xPos: number, yPos: number, outPos: number, needXor: boolean) {
for (let i = 0; i < 256; i++) A2_BUF[i] = x[xPos + i] ^ x[yPos + i];
// rows (8 consecutive 16-register groups)
for (let i = 0; i < 128; i += 16) {
// prettier-ignore
P(
i, i + 1, i + 2, i + 3, i + 4, i + 5, i + 6, i + 7,
i + 8, i + 9, i + 10, i + 11, i + 12, i + 13, i + 14, i + 15
);
}
// columns (8 strided 16-register groups)
for (let i = 0; i < 16; i += 2) {
// prettier-ignore
P(
i, i + 1, i + 16, i + 17, i + 32, i + 33, i + 48, i + 49,
i + 64, i + 65, i + 80, i + 81, i + 96, i + 97, i + 112, i + 113
);
}
// RFC 9106 step 6: passes after the first XOR the old destination block into the new G(X, Y).
if (needXor) for (let i = 0; i < 256; i++) x[outPos + i] ^= A2_BUF[i] ^ x[xPos + i] ^ x[yPos + i];
else for (let i = 0; i < 256; i++) x[outPos + i] = A2_BUF[i] ^ x[xPos + i] ^ x[yPos + i];
clean(A2_BUF);
}
// Variable-Length Hash Function H'
// Returns bytes, not words; 1024-byte block callers explicitly reinterpret with `u32(...)`.
function Hp(A: TArg<Uint32Array>, dkLen: number): TRet<Uint8Array> {
const A8 = u8(A);
const T = new Uint32Array(1);
const T8 = u8(T);
// Argon2 H' prefixes dkLen as LE32; native Uint32Array writes would serialize as BE on s390x.
T[0] = swap8IfBE(dkLen);
// Fast path
if (dkLen <= 64) return blake2b.create({ dkLen }).update(T8).update(A8).digest();
const out = new Uint8Array(dkLen);
let V = blake2b.create({}).update(T8).update(A8).digest();
let pos = 0;
// RFC 9106 Figure 8: each intermediate `V_i` contributes only `W_i`, its first 32 bytes; only
// `V_{r+1}` is emitted in full at the remaining length.
out.set(V.subarray(0, 32));
pos += 32;
// Rest blocks
for (; dkLen - pos > 64; pos += 32) {
const Vh = blake2b.create({}).update(V);
Vh.digestInto(V);
Vh.destroy();
out.set(V.subarray(0, 32), pos);
}
// Last block
out.set(blake2b(V, { dkLen: dkLen - pos }), pos);
clean(V, T);
// H' is byte-oriented; returning `u32(out)` would silently drop dkLen % 4 tail bytes.
return out as TRet<Uint8Array>;
}
// Used only inside process block!
function indexAlpha(
r: number,
s: number,
laneLen: number,
segmentLen: number,
index: number,
randL: number,
sameLane: boolean = false
) {
// RFC 9106 §3.4.2 Figures 12-13: map `J1` / `J2` into the current lane's reference area `W`.
let area: number;
if (r === 0) {
if (s === 0) area = index - 1;
else if (sameLane) area = s * segmentLen + index - 1;
else area = s * segmentLen + (index == 0 ? -1 : 0);
} else if (sameLane) area = laneLen - segmentLen + index - 1;
else area = laneLen - segmentLen + (index == 0 ? -1 : 0);
const startPos = r !== 0 && s !== ARGON2_SYNC_POINTS - 1 ? (s + 1) * segmentLen : 0;
// RFC 9106 Figure 13: `mul(randL, randL).h` is `floor(J_1^2 / 2^32)`, and the outer high-half
// multiply computes `floor(|W| * x / 2^32)` without floating-point math.
const rel = area - 1 - mul(area, mul(randL, randL).h).h;
return (startPos + rel) % laneLen;
}
/** Argon2 cost, output, and optional secret/personalization inputs. */
export type ArgonOpts = {
/** Time cost measured in iterations. */
t: number;
/** Memory cost in kibibytes. */
m: number;
/** Parallelization parameter. */
p: number;
/** Argon2 version number. Defaults to `0x13`. */
version?: number;
/** Optional secret key mixed into initialization. */
key?: KDFInput;
/** Optional personalization string or bytes. */
personalization?: KDFInput;
/** Desired output length in bytes. RFC 9106 §3.1 requires `T` in the 4..(2^32 - 1) range. */
dkLen?: number;
/** Max scheduler block time in milliseconds for the async variants. */
asyncTick?: number;
/** Maximum temporary memory budget in bytes. */
maxmem?: number;
/**
* Optional progress callback invoked during long-running derivations.
* param progress - completion fraction in the `0..1` range
*/
onProgress?: (progress: number) => void;
};
// Exclusive `2^32` sentinel used by `isU32(...)`, not the inclusive maximum u32 value.
const maxUint32 = Math.pow(2, 32);
// Validate safe JS integers in `[0, 2^32 - 1]`.
function isU32(num: number) {
return Number.isSafeInteger(num) && num >= 0 && num < maxUint32;
}
function argon2Opts(opts: TArg<ArgonOpts>) {
const merged: any = {
version: 0x13,
dkLen: 32,
maxmem: maxUint32 - 1,
asyncTick: 10,
};
// Unknown keys are copied through unchanged here and later ignored unless
// destructuring consumes them.
for (let [k, v] of Object.entries(opts)) if (v !== undefined) merged[k] = v;
const { dkLen, p, m, t, version, onProgress, asyncTick } = merged;
// RFC 9106 §3.1: tag length `T` MUST be an integer number of bytes from 4 to 2^32-1.
if (!isU32(dkLen) || dkLen < 4) throw new Error('"dkLen" must be 4..');
if (!isU32(p) || p < 1 || p >= Math.pow(2, 24)) throw new Error('"p" must be 1..2^24');
if (!isU32(m)) throw new Error('"m" must be 0..2^32');
if (!isU32(t) || t < 1) throw new Error('"t" (iterations) must be 1..2^32');
if (onProgress !== undefined && typeof onProgress !== 'function')
throw new Error('"progressCb" must be a function');
anumber(asyncTick, 'asyncTick');
/*
Memory size m MUST be an integer number of kibibytes from 8*p
to 2^(32)-1. The actual number of blocks is m', which is m
rounded down to the nearest multiple of 4*p.
*/
if (!isU32(m) || m < 8 * p) throw new Error('"m" (memory) must be at least 8*p bytes');
// Accept legacy `0x10` for compatibility even though RFC 9106 profiles standardize `0x13`.
if (version !== 0x10 && version !== 0x13)
throw new Error('"version" must be 0x10 or 0x13, got ' + version);
return merged;
}
function argon2Init(
password: TArg<KDFInput>,
salt: TArg<KDFInput>,
type: Types,
opts: TArg<ArgonOpts>
) {
password = kdfInputToBytes(password, 'password');
salt = kdfInputToBytes(salt, 'salt');
if (!isU32(password.length)) throw new Error('"password" must be less of length 1..4Gb');
// RFC 9106 §3.1 only requires S <= 2^32-1 bytes and says 16 bytes is RECOMMENDED for password
// hashing; this library intentionally takes the stricter common >=8-byte salt path.
if (!isU32(salt.length) || salt.length < 8) throw new Error('"salt" must be of length 8..4Gb');
if (!Object.values(AT).includes(type)) throw new Error('"type" was invalid');
let { p, dkLen, m, t, version, key, personalization, maxmem, onProgress, asyncTick } =
argon2Opts(opts);
// Validation
key = abytesOrZero(key, 'key');
personalization = abytesOrZero(personalization, 'personalization');
// H_0 = H^(64)(LE32(p) || LE32(T) || LE32(m) || LE32(t) ||
// LE32(v) || LE32(y) || LE32(length(P)) || P ||
// LE32(length(S)) || S || LE32(length(K)) || K ||
// LE32(length(X)) || X)
const h = blake2b.create();
const BUF = new Uint32Array(1);
const BUF8 = u8(BUF);
for (let item of [p, dkLen, m, t, version, type]) {
// RFC 9106 H0 encodes these scalars as LE32, so normalize the host word before exposing bytes.
BUF[0] = swap8IfBE(item);
h.update(BUF8);
}
for (let i of [password, salt, key, personalization]) {
BUF[0] = swap8IfBE(i.length); // BUF is u32 array, this is valid once normalized to LE bytes
h.update(BUF8).update(i);
}
// Reserve two extra LE32 words after the 64-byte `H_0` so Figures 3-4 can append
// `LE32(0 or 1) || LE32(i)` in place for the lane-starting blocks.
const H0 = new Uint32Array(18);
const H0_8 = u8(H0);
h.digestInto(H0_8);
// 256 u32 = 1024 (BLOCK_SIZE), fills A2_BUF on processing
// Params
const lanes = p;
// m' = 4 * p * floor (m / 4p)
const mP = 4 * p * Math.floor(m / (ARGON2_SYNC_POINTS * p));
//q = m' / p columns
const laneLen = Math.floor(mP / p);
const segmentLen = Math.floor(laneLen / ARGON2_SYNC_POINTS);
// `maxmem` is documented in bytes; compare against the actual 1024-byte block allocation.
const memUsed = mP * 1024;
if (!isU32(maxmem)) throw new Error('"maxmem" expected <2**32, got ' + maxmem);
if (memUsed > maxmem)
throw new Error('"maxmem" limit was hit: memUsed(mP*1024)=' + memUsed + ', maxmem=' + maxmem);
const B = new Uint32Array(memUsed / 4);
// Fill first blocks
for (let l = 0; l < p; l++) {
const i = 256 * laneLen * l;
// B[i][0] = H'^(1024)(H_0 || LE32(0) || LE32(i))
H0[17] = swap8IfBE(l);
H0[16] = swap8IfBE(0);
B.set(swap32IfBE(u32(Hp(H0, 1024))), i);
// B[i][1] = H'^(1024)(H_0 || LE32(1) || LE32(i))
H0[16] = swap8IfBE(1);
B.set(swap32IfBE(u32(Hp(H0, 1024))), i + 256);
}
let perBlock = () => {};
if (onProgress) {
// The first segment of the first pass skips two preinitialized blocks per lane.
const totalBlock = t * ARGON2_SYNC_POINTS * p * segmentLen - 2 * p;
// Invoke callback if progress changes from 10.01 to 10.02
// Allows to draw smooth progress bar on up to 8K screen
const callbackPer = Math.max(Math.floor(totalBlock / 10000), 1);
let blockCnt = 0;
perBlock = () => {
blockCnt++;
if (onProgress && (!(blockCnt % callbackPer) || blockCnt === totalBlock))
onProgress(blockCnt / totalBlock);
};
}
clean(BUF, H0);
return { type, mP, p, t, version, B, laneLen, lanes, segmentLen, dkLen, perBlock, asyncTick };
}
function argon2Output(
B: TArg<Uint32Array>,
p: number,
laneLen: number,
dkLen: number
): TRet<Uint8Array> {
const B_final = new Uint32Array(256);
for (let l = 0; l < p; l++)
for (let j = 0; j < 256; j++) B_final[j] ^= B[256 * (laneLen * l + laneLen - 1) + j];
// RFC 9106 steps 7-8 feed the byte string `C` into `H'^T(C)`, so normalize the xor'ed words
// back to spec byte order before `Hp(...)` reinterprets them as bytes.
const res = Hp(swap32IfBE(B_final), dkLen);
// Wipe both the xor scratch and the full working matrix once final digest bytes exist.
// JS cleanup is still only best-effort, but this local buffer is no longer needed here.
clean(B, B_final);
return res;
}
function processBlock(
B: TArg<Uint32Array>,
address: TArg<Uint32Array>,
l: number,
r: number,
s: number,
index: number,
laneLen: number,
segmentLen: number,
lanes: number,
offset: number,
prev: number,
dataIndependent: boolean,
needXor: boolean
) {
if (offset % laneLen) prev = offset - 1;
let randL, randH;
if (dataIndependent) {
let i128 = index % 128;
// RFC 9106 §3.4.1.2: each 1024-byte address block yields 128 `(J1, J2)` pairs, so regenerate
// it whenever the segment index crosses a multiple of 128.
if (i128 === 0) {
address[256 + 12]++;
block(address, 256, 2 * 256, 0, false);
block(address, 0, 2 * 256, 0, false);
}
randL = address[2 * i128];
randH = address[2 * i128 + 1];
} else {
const T = 256 * prev;
randL = B[T];
randH = B[T + 1];
}
// Address-block path selects `J1` / `J2`, then maps them to the reference
// lane/block per RFC 9106 §3.4.
const refLane = r === 0 && s === 0 ? l : randH % lanes;
const refPos = indexAlpha(r, s, laneLen, segmentLen, index, randL, refLane == l);
const refBlock = laneLen * refLane + refPos;
// B[i][j] = G(B[i][j-1], B[l][z])
block(B, 256 * prev, 256 * refBlock, offset * 256, needXor);
}
function argon2(
type: Types,
password: TArg<KDFInput>,
salt: TArg<KDFInput>,
opts: TArg<ArgonOpts>
): TRet<Uint8Array> {
const { mP, p, t, version, B, laneLen, lanes, segmentLen, dkLen, perBlock } = argon2Init(
password,
salt,
type,
opts
);
// Pre-loop setup
// [address, input, zero_block] format so we can pass single U32 to block function
const address = new Uint32Array(3 * 256);
address[256 + 6] = mP;
address[256 + 8] = t;
address[256 + 10] = type;
for (let r = 0; r < t; r++) {
// RFC 9106 step 6 applies the XOR-on-later-passes rule only for version `0x13`; legacy
// `0x10` keeps the older overwrite behavior used by the v16 test vectors.
const needXor = r !== 0 && version === 0x13;
address[256 + 0] = r;
for (let s = 0; s < ARGON2_SYNC_POINTS; s++) {
address[256 + 4] = s;
// RFC 9106 §3.4.1.3: Argon2id uses Argon2i's data-independent `J1` / `J2` generation only
// in pass 0, slices 0 and 1; Argon2i uses it in every segment.
const dataIndependent = type == AT.Argon2i || (type == AT.Argon2id && r === 0 && s < 2);
for (let l = 0; l < p; l++) {
address[256 + 2] = l;
address[256 + 12] = 0;
let startPos = 0;
if (r === 0 && s === 0) {
startPos = 2;
if (dataIndependent) {
address[256 + 12]++;
block(address, 256, 2 * 256, 0, false);
block(address, 0, 2 * 256, 0, false);
}
}
// current block postion
let offset = l * laneLen + s * segmentLen + startPos;
// previous block position
let prev = offset % laneLen ? offset - 1 : offset + laneLen - 1;
for (let index = startPos; index < segmentLen; index++, offset++, prev++) {
perBlock();
processBlock(
B,
address,
l,
r,
s,
index,
laneLen,
segmentLen,
lanes,
offset,
prev,
dataIndependent,
needXor
);
}
}
}
}
clean(address);
return argon2Output(B, p, laneLen, dkLen);
}
/**
* Argon2d GPU-resistant version.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2d.
* ```ts
* argon2d('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export const argon2d = (
password: TArg<KDFInput>,
salt: TArg<KDFInput>,
opts: TArg<ArgonOpts>
): TRet<Uint8Array> => argon2(AT.Argond2d, password, salt, opts);
/**
* Argon2i side-channel-resistant version.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2i.
* ```ts
* argon2i('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export const argon2i = (
password: TArg<KDFInput>,
salt: TArg<KDFInput>,
opts: TArg<ArgonOpts>
): TRet<Uint8Array> => argon2(AT.Argon2i, password, salt, opts);
/**
* Argon2id, combining i+d, the most popular version from RFC 9106.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2id.
* ```ts
* argon2id('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export const argon2id = (
password: TArg<KDFInput>,
salt: TArg<KDFInput>,
opts: TArg<ArgonOpts>
): TRet<Uint8Array> => argon2(AT.Argon2id, password, salt, opts);
async function argon2Async(
type: Types,
password: TArg<KDFInput>,
salt: TArg<KDFInput>,
opts: TArg<ArgonOpts>
): Promise<TRet<Uint8Array>> {
const { mP, p, t, version, B, laneLen, lanes, segmentLen, dkLen, perBlock, asyncTick } =
argon2Init(password, salt, type, opts);
// Pre-loop setup
// [address, input, zero_block] format so we can pass single U32 to block function
const address = new Uint32Array(3 * 256);
address[256 + 6] = mP;
address[256 + 8] = t;
address[256 + 10] = type;
let ts = Date.now();
for (let r = 0; r < t; r++) {
// RFC 9106 step 6 applies the XOR-on-later-passes rule only for version `0x13`; legacy
// `0x10` keeps the older overwrite behavior used by the v16 test vectors.
const needXor = r !== 0 && version === 0x13;
address[256 + 0] = r;
for (let s = 0; s < ARGON2_SYNC_POINTS; s++) {
address[256 + 4] = s;
// RFC 9106 §3.4.1.3: Argon2id uses Argon2i's data-independent `J1` / `J2` generation only
// in pass 0, slices 0 and 1; Argon2i uses it in every segment.
const dataIndependent = type == AT.Argon2i || (type == AT.Argon2id && r === 0 && s < 2);
for (let l = 0; l < p; l++) {
address[256 + 2] = l;
address[256 + 12] = 0;
let startPos = 0;
if (r === 0 && s === 0) {
startPos = 2;
if (dataIndependent) {
address[256 + 12]++;
block(address, 256, 2 * 256, 0, false);
block(address, 0, 2 * 256, 0, false);
}
}
// current block postion
let offset = l * laneLen + s * segmentLen + startPos;
// previous block position
let prev = offset % laneLen ? offset - 1 : offset + laneLen - 1;
for (let index = startPos; index < segmentLen; index++, offset++, prev++) {
perBlock();
processBlock(
B,
address,
l,
r,
s,
index,
laneLen,
segmentLen,
lanes,
offset,
prev,
dataIndependent,
needXor
);
// Date.now() is not monotonic. If the clock goes backwards,
// still yield control.
const diff = Date.now() - ts;
if (!(diff >= 0 && diff < asyncTick)) {
await nextTick();
ts += diff;
}
}
}
}
}
clean(address);
return argon2Output(B, p, laneLen, dkLen);
}
/**
* Argon2d async GPU-resistant version.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Promise resolving to derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2d asynchronously.
* ```ts
* await argon2dAsync('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export const argon2dAsync = (
password: TArg<KDFInput>,
salt: TArg<KDFInput>,
opts: TArg<ArgonOpts>
): Promise<TRet<Uint8Array>> => argon2Async(AT.Argond2d, password, salt, opts);
/**
* Argon2i async side-channel-resistant version.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Promise resolving to derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2i asynchronously.
* ```ts
* await argon2iAsync('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export const argon2iAsync = (
password: TArg<KDFInput>,
salt: TArg<KDFInput>,
opts: TArg<ArgonOpts>
): Promise<TRet<Uint8Array>> => argon2Async(AT.Argon2i, password, salt, opts);
/**
* Argon2id async, combining i+d, the most popular version from RFC 9106.
* @param password - password or input key material
* @param salt - unique salt value
* @param opts - Argon2 cost and optional tuning parameters. See {@link ArgonOpts}.
* @returns Promise resolving to derived key bytes.
* @throws If the Argon2 input or cost parameters are invalid. {@link Error}
* @example
* Derive a key with Argon2id asynchronously.
* ```ts
* await argon2idAsync('password', 'salt1234', { t: 1, m: 8, p: 1, dkLen: 32 });
* ```
*/
export const argon2idAsync = (
password: TArg<KDFInput>,
salt: TArg<KDFInput>,
opts: TArg<ArgonOpts>
): Promise<TRet<Uint8Array>> => argon2Async(AT.Argon2id, password, salt, opts);

614
electron/node_modules/@noble/hashes/src/blake1.ts generated vendored Normal file
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@ -0,0 +1,614 @@
/**
* Blake1 legacy hash function, one of SHA3 proposals.
* Rarely used. Check out blake2 or blake3 instead.
* {@link https://www.aumasson.jp/blake/blake.pdf}
*
* In the best case, there are 0 allocations.
*
* Differences from blake2:
*
* - BE instead of LE
* - Paddings, similar to MD5, RIPEMD, SHA1, SHA2, but:
* - length flag is located before actual length
* - padding block is compressed differently (no lengths)
* Instead of msg[sigma[k]], we have `msg[sigma[k]] ^ constants[sigma[k-1]]`
* (-1 for g1, g2 without -1)
* - Salt is XOR-ed into constants instead of state
* - Salt is XOR-ed with output in `compress`
* - Additional rows (+64 bytes) in SIGMA for new rounds
* - Different round count:
* - 14 / 10 rounds in blake256 / blake2s
* - 16 / 12 rounds in blake512 / blake2b
* - blake512: G1b: rotr 24 -> 25, G2b: rotr 63 -> 11
* @module
*/
import { BSIGMA, G1s, G2s } from './_blake.ts';
import { SHA224_IV, SHA256_IV, SHA384_IV, SHA512_IV } from './_md.ts';
import * as u64 from './_u64.ts';
// prettier-ignore
import {
abytes, aexists, aoutput,
clean, createHasher,
createView,
type CHash,
type Hash,
type TArg,
type TRet
} from './utils.ts';
/** Blake1 options. Basically just `salt`. */
export type BlakeOpts = {
/** Optional salt mixed into initialization. */
salt?: Uint8Array;
};
// Shared unsalted sentinel, sized for the 64-bit path and reused by the 32-bit path via prefix.
const EMPTY_SALT = /* @__PURE__ */ new Uint32Array(8);
// Base destroy logic only clears salt-derived state; the partial message buffer and length/position
// bookkeeping remain until the instance or backing buffer is reused.
abstract class BLAKE1<T extends BLAKE1<T>> implements Hash<T> {
readonly canXOF = false;
protected finished = false;
protected length = 0;
protected pos = 0;
protected destroyed = false;
// For partial updates less than block size
protected buffer: Uint8Array;
protected view: DataView;
protected salt: Uint32Array;
abstract compress(view: DataView, offset: number, withLength?: boolean): void;
protected abstract get(): number[];
protected abstract set(...args: number[]): void;
readonly blockLen: number;
readonly outputLen: number;
private lengthFlag: number;
private counterLen: number;
protected constants: Uint32Array;
constructor(
blockLen: number,
outputLen: number,
lengthFlag: number,
counterLen: number,
saltLen: number,
constants: Uint32Array,
opts: BlakeOpts = {}
) {
const { salt } = opts;
this.blockLen = blockLen;
this.outputLen = outputLen;
this.lengthFlag = lengthFlag;
this.counterLen = counterLen;
this.buffer = new Uint8Array(blockLen);
this.view = createView(this.buffer);
if (salt !== undefined) {
let slt = salt;
abytes(slt, 4 * saltLen, 'salt');
// if (slt.length !== 4 * saltLen) throw new Error('wrong salt length');
const salt32 = (this.salt = new Uint32Array(saltLen));
const sv = createView(slt);
this.constants = constants.slice();
for (let i = 0, offset = 0; i < salt32.length; i++, offset += 4) {
salt32[i] = sv.getUint32(offset, false);
this.constants[i] ^= salt32[i];
}
} else {
this.salt = EMPTY_SALT;
this.constants = constants;
}
}
update(data: TArg<Uint8Array>): this {
aexists(this);
abytes(data);
// From _md, but update length before each compress
const { view, buffer, blockLen } = this;
const len = data.length;
let dataView;
for (let pos = 0; pos < len; ) {
const take = Math.min(blockLen - this.pos, len - pos);
// Fast path only when there is no buffered partial block: `take === blockLen` implies
// `this.pos === 0`, so we can process full blocks directly from the input view.
if (take === blockLen) {
if (!dataView) dataView = createView(data);
for (; blockLen <= len - pos; pos += blockLen) {
this.length += blockLen;
this.compress(dataView, pos);
}
continue;
}
buffer.set(data.subarray(pos, pos + take), this.pos);
this.pos += take;
pos += take;
if (this.pos === blockLen) {
this.length += blockLen;
this.compress(view, 0, true);
this.pos = 0;
}
}
return this;
}
destroy(): void {
this.destroyed = true;
if (this.salt !== EMPTY_SALT) {
clean(this.salt, this.constants);
}
}
_cloneInto(to?: T): T {
to ||= new (this.constructor as any)() as T;
to.set(...this.get());
const { buffer, length, finished, destroyed, constants, salt, pos } = this;
to.buffer.set(buffer);
// Clone salt-derived arrays by value so destroying the clone cannot wipe the source instance.
to.constants = constants.slice();
to.destroyed = destroyed;
to.finished = finished;
to.length = length;
to.pos = pos;
to.salt = salt.slice();
return to;
}
clone(): T {
return this._cloneInto();
}
digestInto(out: TArg<Uint8Array>): void {
aexists(this);
aoutput(out, this);
this.finished = true;
// Padding
const { buffer, blockLen, counterLen, lengthFlag, view } = this;
clean(buffer.subarray(this.pos)); // clean buf
const counter = BigInt((this.length + this.pos) * 8);
const counterPos = blockLen - counterLen - 1;
buffer[this.pos] |= 0b1000_0000; // End block flag
this.length += this.pos; // add unwritten length
// Not enough in buffer for length: write what we have.
if (this.pos > counterPos) {
this.compress(view, 0);
clean(buffer);
this.pos = 0;
}
// Difference with md: here we have lengthFlag!
buffer[counterPos] |= lengthFlag; // Length flag
// We always set 8 byte length flag. Because length will overflow significantly sooner.
view.setBigUint64(blockLen - 8, counter, false);
// Blake1 omits the counter from the extra all-padding block; only the block that still carries
// message bytes mixes in the final bit length.
this.compress(view, 0, this.pos !== 0);
// Write output
clean(buffer);
const v = createView(out);
const state = this.get();
for (let i = 0; i < this.outputLen / 4; ++i) v.setUint32(i * 4, state[i]);
}
digest(): TRet<Uint8Array> {
const { buffer, outputLen } = this;
this.digestInto(buffer);
// Return a copy so callers do not alias the instance scratch buffer used during finalization.
const res = buffer.slice(0, outputLen);
this.destroy();
return res as TRet<Uint8Array>;
}
}
// Blake1-512 / Blake1-384 constant table `C512`.
// Stored as sixteen 64-bit constants split into `[high32, low32]` halves so
// the Blake1-64 path can reuse one layout for both `v8..v15` initialization
// and the permuted constant lookups.
const B64C = /* @__PURE__ */ Uint32Array.from([
0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c, 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
0x9216d5d9, 0x8979fb1b, 0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96,
0xba7c9045, 0xf12c7f99, 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16, 0x636920d8, 0x71574e69,
]);
// Blake1-256 / Blake1-224 constant table `C256`, derived as the first half of `C512`.
const B32C = /* @__PURE__ */ B64C.slice(0, 16);
// Blake1-256 IV cloned from SHA-256.
const B256_IV = /* @__PURE__ */ SHA256_IV.slice();
// Blake1-224 IV cloned from SHA-224.
const B224_IV = /* @__PURE__ */ SHA224_IV.slice();
// Blake1-384 IV cloned from the SHA-384 high-then-low 32-bit halves.
const B384_IV = /* @__PURE__ */ SHA384_IV.slice();
// Blake1-512 IV cloned from the SHA-512 high-then-low 32-bit halves.
const B512_IV = /* @__PURE__ */ SHA512_IV.slice();
// Precompute the odd/even companion constants used by all 14 Blake1-32 rounds.
// Each pair stores `u[sigma[2i + 1]]` then `u[sigma[2i]]`, matching the `G1s` / `G2s` xor order.
function generateTBL256() {
const TBL = [];
for (let i = 0, j = 0; i < 14; i++, j += 16) {
for (let offset = 1; offset < 16; offset += 2) {
TBL.push(B32C[BSIGMA[j + offset]]);
TBL.push(B32C[BSIGMA[j + offset - 1]]);
}
}
return new Uint32Array(TBL);
}
// Full 14-round companion-constant table for Blake1-32.
const TBL256 = /* @__PURE__ */ generateTBL256();
// Shared synchronous message-word scratch for the 32-bit Blake1 path.
const BLAKE256_W = /* @__PURE__ */ new Uint32Array(16);
class BLAKE1_32B extends BLAKE1<BLAKE1_32B> {
private v0: number;
private v1: number;
private v2: number;
private v3: number;
private v4: number;
private v5: number;
private v6: number;
private v7: number;
constructor(outputLen: number, IV: Uint32Array, lengthFlag: number, opts: BlakeOpts = {}) {
super(64, outputLen, lengthFlag, 8, 4, B32C, opts);
this.v0 = IV[0] | 0;
this.v1 = IV[1] | 0;
this.v2 = IV[2] | 0;
this.v3 = IV[3] | 0;
this.v4 = IV[4] | 0;
this.v5 = IV[5] | 0;
this.v6 = IV[6] | 0;
this.v7 = IV[7] | 0;
}
protected get(): [number, number, number, number, number, number, number, number] {
const { v0, v1, v2, v3, v4, v5, v6, v7 } = this;
return [v0, v1, v2, v3, v4, v5, v6, v7];
}
// prettier-ignore
protected set(
v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number
): void {
this.v0 = v0 | 0;
this.v1 = v1 | 0;
this.v2 = v2 | 0;
this.v3 = v3 | 0;
this.v4 = v4 | 0;
this.v5 = v5 | 0;
this.v6 = v6 | 0;
this.v7 = v7 | 0;
}
destroy(): void {
super.destroy();
this.set(0, 0, 0, 0, 0, 0, 0, 0);
}
compress(view: DataView, offset: number, withLength = true): void {
for (let i = 0; i < 16; i++, offset += 4) BLAKE256_W[i] = view.getUint32(offset, false);
// Cannot reuse blake2s compress: Blake1 mixes each message word with the companion constants
// precomputed in `TBL256`, rather than using the raw schedule words directly.
let v00 = this.v0 | 0;
let v01 = this.v1 | 0;
let v02 = this.v2 | 0;
let v03 = this.v3 | 0;
let v04 = this.v4 | 0;
let v05 = this.v5 | 0;
let v06 = this.v6 | 0;
let v07 = this.v7 | 0;
let v08 = this.constants[0] | 0;
let v09 = this.constants[1] | 0;
let v10 = this.constants[2] | 0;
let v11 = this.constants[3] | 0;
// Blake1-32 injects the 64-bit bit counter as `[t0, t0, t1, t1]` across `v12..v15`; the
// final all-padding block passes `withLength = false`, leaving these lanes as raw constants.
const { h, l } = u64.fromBig(BigInt(withLength ? this.length * 8 : 0));
let v12 = (this.constants[4] ^ l) >>> 0;
let v13 = (this.constants[5] ^ l) >>> 0;
let v14 = (this.constants[6] ^ h) >>> 0;
let v15 = (this.constants[7] ^ h) >>> 0;
// prettier-ignore
for (let i = 0, k = 0, j = 0; i < 14; i++) {
({ a: v00, b: v04, c: v08, d: v12 } = G1s(v00, v04, v08, v12, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v00, b: v04, c: v08, d: v12 } = G2s(v00, v04, v08, v12, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v01, b: v05, c: v09, d: v13 } = G1s(v01, v05, v09, v13, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v01, b: v05, c: v09, d: v13 } = G2s(v01, v05, v09, v13, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v02, b: v06, c: v10, d: v14 } = G1s(v02, v06, v10, v14, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v02, b: v06, c: v10, d: v14 } = G2s(v02, v06, v10, v14, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v03, b: v07, c: v11, d: v15 } = G1s(v03, v07, v11, v15, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v03, b: v07, c: v11, d: v15 } = G2s(v03, v07, v11, v15, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v00, b: v05, c: v10, d: v15 } = G1s(v00, v05, v10, v15, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v00, b: v05, c: v10, d: v15 } = G2s(v00, v05, v10, v15, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v01, b: v06, c: v11, d: v12 } = G1s(v01, v06, v11, v12, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v01, b: v06, c: v11, d: v12 } = G2s(v01, v06, v11, v12, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v02, b: v07, c: v08, d: v13 } = G1s(v02, v07, v08, v13, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v02, b: v07, c: v08, d: v13 } = G2s(v02, v07, v08, v13, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v03, b: v04, c: v09, d: v14 } = G1s(v03, v04, v09, v14, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
({ a: v03, b: v04, c: v09, d: v14 } = G2s(v03, v04, v09, v14, BLAKE256_W[BSIGMA[k++]] ^ TBL256[j++]));
}
this.v0 = (this.v0 ^ v00 ^ v08 ^ this.salt[0]) >>> 0;
this.v1 = (this.v1 ^ v01 ^ v09 ^ this.salt[1]) >>> 0;
this.v2 = (this.v2 ^ v02 ^ v10 ^ this.salt[2]) >>> 0;
this.v3 = (this.v3 ^ v03 ^ v11 ^ this.salt[3]) >>> 0;
this.v4 = (this.v4 ^ v04 ^ v12 ^ this.salt[0]) >>> 0;
this.v5 = (this.v5 ^ v05 ^ v13 ^ this.salt[1]) >>> 0;
this.v6 = (this.v6 ^ v06 ^ v14 ^ this.salt[2]) >>> 0;
this.v7 = (this.v7 ^ v07 ^ v15 ^ this.salt[3]) >>> 0;
clean(BLAKE256_W);
}
}
// Shared Blake1-64 work vector storing 16 working words as adjacent high/low 32-bit halves.
const BBUF = /* @__PURE__ */ new Uint32Array(32);
// Shared synchronous message-word scratch for the 64-bit Blake1 path.
const BLAKE512_W = /* @__PURE__ */ new Uint32Array(32);
// Precompute the high/low companion constants used by all 16 Blake1-64 rounds.
// Each quartet stores `u[sigma[2i + 1]]` high/low halves, then `u[sigma[2i]]` high/low halves.
function generateTBL512() {
const TBL = [];
for (let r = 0, k = 0; r < 16; r++, k += 16) {
for (let offset = 1; offset < 16; offset += 2) {
TBL.push(B64C[BSIGMA[k + offset] * 2 + 0]);
TBL.push(B64C[BSIGMA[k + offset] * 2 + 1]);
TBL.push(B64C[BSIGMA[k + offset - 1] * 2 + 0]);
TBL.push(B64C[BSIGMA[k + offset - 1] * 2 + 1]);
}
}
return new Uint32Array(TBL);
}
// Full 16-round companion-constant table as high/low halves.
const TBL512 = /* @__PURE__ */ generateTBL512();
// Blake1-64 first half-round with rotations `32` and `25`; `k` is the half-call schedule index.
function G1b(a: number, b: number, c: number, d: number, msg: TArg<Uint32Array>, k: number) {
const Xpos = 2 * BSIGMA[k];
const Xl = msg[Xpos + 1] ^ TBL512[k * 2 + 1], Xh = msg[Xpos] ^ TBL512[k * 2]; // prettier-ignore
let Al = BBUF[2 * a + 1], Ah = BBUF[2 * a]; // prettier-ignore
let Bl = BBUF[2 * b + 1], Bh = BBUF[2 * b]; // prettier-ignore
let Cl = BBUF[2 * c + 1], Ch = BBUF[2 * c]; // prettier-ignore
let Dl = BBUF[2 * d + 1], Dh = BBUF[2 * d]; // prettier-ignore
// v[a] = (v[a] + v[b] + x) | 0;
let ll = u64.add3L(Al, Bl, Xl);
Ah = u64.add3H(ll, Ah, Bh, Xh) >>> 0;
Al = (ll | 0) >>> 0;
// v[d] = rotr(v[d] ^ v[a], 32)
({ Dh, Dl } = { Dh: Dh ^ Ah, Dl: Dl ^ Al });
({ Dh, Dl } = { Dh: u64.rotr32H(Dh, Dl), Dl: u64.rotr32L(Dh, Dl) });
// v[c] = (v[c] + v[d]) | 0;
({ h: Ch, l: Cl } = u64.add(Ch, Cl, Dh, Dl));
// v[b] = rotr(v[b] ^ v[c], 25)
({ Bh, Bl } = { Bh: Bh ^ Ch, Bl: Bl ^ Cl });
({ Bh, Bl } = { Bh: u64.rotrSH(Bh, Bl, 25), Bl: u64.rotrSL(Bh, Bl, 25) });
((BBUF[2 * a + 1] = Al), (BBUF[2 * a] = Ah));
((BBUF[2 * b + 1] = Bl), (BBUF[2 * b] = Bh));
((BBUF[2 * c + 1] = Cl), (BBUF[2 * c] = Ch));
((BBUF[2 * d + 1] = Dl), (BBUF[2 * d] = Dh));
}
// Blake1-64 second half-round with rotations `16` and `11`; `k` is the half-call schedule index.
function G2b(a: number, b: number, c: number, d: number, msg: TArg<Uint32Array>, k: number) {
const Xpos = 2 * BSIGMA[k];
const Xl = msg[Xpos + 1] ^ TBL512[k * 2 + 1], Xh = msg[Xpos] ^ TBL512[k * 2]; // prettier-ignore
let Al = BBUF[2 * a + 1], Ah = BBUF[2 * a]; // prettier-ignore
let Bl = BBUF[2 * b + 1], Bh = BBUF[2 * b]; // prettier-ignore
let Cl = BBUF[2 * c + 1], Ch = BBUF[2 * c]; // prettier-ignore
let Dl = BBUF[2 * d + 1], Dh = BBUF[2 * d]; // prettier-ignore
// v[a] = (v[a] + v[b] + x) | 0;
let ll = u64.add3L(Al, Bl, Xl);
Ah = u64.add3H(ll, Ah, Bh, Xh);
Al = ll | 0;
// v[d] = rotr(v[d] ^ v[a], 16)
({ Dh, Dl } = { Dh: Dh ^ Ah, Dl: Dl ^ Al });
({ Dh, Dl } = { Dh: u64.rotrSH(Dh, Dl, 16), Dl: u64.rotrSL(Dh, Dl, 16) });
// v[c] = (v[c] + v[d]) | 0;
({ h: Ch, l: Cl } = u64.add(Ch, Cl, Dh, Dl));
// v[b] = rotr(v[b] ^ v[c], 11)
({ Bh, Bl } = { Bh: Bh ^ Ch, Bl: Bl ^ Cl });
({ Bh, Bl } = { Bh: u64.rotrSH(Bh, Bl, 11), Bl: u64.rotrSL(Bh, Bl, 11) });
((BBUF[2 * a + 1] = Al), (BBUF[2 * a] = Ah));
((BBUF[2 * b + 1] = Bl), (BBUF[2 * b] = Bh));
((BBUF[2 * c + 1] = Cl), (BBUF[2 * c] = Ch));
((BBUF[2 * d + 1] = Dl), (BBUF[2 * d] = Dh));
}
// Legacy field names keep the local `l/h` spelling, but array/state order stays `[high, low]` to
// match the IV tables and `BBUF` layout.
class BLAKE1_64B extends BLAKE1<BLAKE1_64B> {
private v0l: number;
private v0h: number;
private v1l: number;
private v1h: number;
private v2l: number;
private v2h: number;
private v3l: number;
private v3h: number;
private v4l: number;
private v4h: number;
private v5l: number;
private v5h: number;
private v6l: number;
private v6h: number;
private v7l: number;
private v7h: number;
constructor(outputLen: number, IV: Uint32Array, lengthFlag: number, opts: BlakeOpts = {}) {
super(128, outputLen, lengthFlag, 16, 8, B64C, opts);
this.v0l = IV[0] | 0;
this.v0h = IV[1] | 0;
this.v1l = IV[2] | 0;
this.v1h = IV[3] | 0;
this.v2l = IV[4] | 0;
this.v2h = IV[5] | 0;
this.v3l = IV[6] | 0;
this.v3h = IV[7] | 0;
this.v4l = IV[8] | 0;
this.v4h = IV[9] | 0;
this.v5l = IV[10] | 0;
this.v5h = IV[11] | 0;
this.v6l = IV[12] | 0;
this.v6h = IV[13] | 0;
this.v7l = IV[14] | 0;
this.v7h = IV[15] | 0;
}
// prettier-ignore
protected get(): [
number, number, number, number, number, number, number, number,
number, number, number, number, number, number, number, number
] {
let { v0l, v0h, v1l, v1h, v2l, v2h, v3l, v3h, v4l, v4h, v5l, v5h, v6l, v6h, v7l, v7h } = this;
return [v0l, v0h, v1l, v1h, v2l, v2h, v3l, v3h, v4l, v4h, v5l, v5h, v6l, v6h, v7l, v7h];
}
// prettier-ignore
protected set(
v0l: number, v0h: number, v1l: number, v1h: number,
v2l: number, v2h: number, v3l: number, v3h: number,
v4l: number, v4h: number, v5l: number, v5h: number,
v6l: number, v6h: number, v7l: number, v7h: number
): void {
this.v0l = v0l | 0;
this.v0h = v0h | 0;
this.v1l = v1l | 0;
this.v1h = v1h | 0;
this.v2l = v2l | 0;
this.v2h = v2h | 0;
this.v3l = v3l | 0;
this.v3h = v3h | 0;
this.v4l = v4l | 0;
this.v4h = v4h | 0;
this.v5l = v5l | 0;
this.v5h = v5h | 0;
this.v6l = v6l | 0;
this.v6h = v6h | 0;
this.v7l = v7l | 0;
this.v7h = v7h | 0;
}
destroy(): void {
super.destroy();
this.set(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
}
compress(view: DataView, offset: number, withLength = true): void {
for (let i = 0; i < 32; i++, offset += 4) BLAKE512_W[i] = view.getUint32(offset, false);
this.get().forEach((v, i) => (BBUF[i] = v)); // First half from state.
BBUF.set(this.constants.subarray(0, 16), 16);
if (withLength) {
// Blake1-64 injects the 64-bit bit counter into `v12` and `v13`; the final all-padding
// block passes `withLength = false`, leaving the trailing constant lanes untouched.
const { h, l } = u64.fromBig(BigInt(this.length * 8));
BBUF[24] = (BBUF[24] ^ h) >>> 0;
BBUF[25] = (BBUF[25] ^ l) >>> 0;
BBUF[26] = (BBUF[26] ^ h) >>> 0;
BBUF[27] = (BBUF[27] ^ l) >>> 0;
}
for (let i = 0, k = 0; i < 16; i++) {
G1b(0, 4, 8, 12, BLAKE512_W, k++);
G2b(0, 4, 8, 12, BLAKE512_W, k++);
G1b(1, 5, 9, 13, BLAKE512_W, k++);
G2b(1, 5, 9, 13, BLAKE512_W, k++);
G1b(2, 6, 10, 14, BLAKE512_W, k++);
G2b(2, 6, 10, 14, BLAKE512_W, k++);
G1b(3, 7, 11, 15, BLAKE512_W, k++);
G2b(3, 7, 11, 15, BLAKE512_W, k++);
G1b(0, 5, 10, 15, BLAKE512_W, k++);
G2b(0, 5, 10, 15, BLAKE512_W, k++);
G1b(1, 6, 11, 12, BLAKE512_W, k++);
G2b(1, 6, 11, 12, BLAKE512_W, k++);
G1b(2, 7, 8, 13, BLAKE512_W, k++);
G2b(2, 7, 8, 13, BLAKE512_W, k++);
G1b(3, 4, 9, 14, BLAKE512_W, k++);
G2b(3, 4, 9, 14, BLAKE512_W, k++);
}
this.v0l ^= BBUF[0] ^ BBUF[16] ^ this.salt[0];
this.v0h ^= BBUF[1] ^ BBUF[17] ^ this.salt[1];
this.v1l ^= BBUF[2] ^ BBUF[18] ^ this.salt[2];
this.v1h ^= BBUF[3] ^ BBUF[19] ^ this.salt[3];
this.v2l ^= BBUF[4] ^ BBUF[20] ^ this.salt[4];
this.v2h ^= BBUF[5] ^ BBUF[21] ^ this.salt[5];
this.v3l ^= BBUF[6] ^ BBUF[22] ^ this.salt[6];
this.v3h ^= BBUF[7] ^ BBUF[23] ^ this.salt[7];
this.v4l ^= BBUF[8] ^ BBUF[24] ^ this.salt[0];
this.v4h ^= BBUF[9] ^ BBUF[25] ^ this.salt[1];
this.v5l ^= BBUF[10] ^ BBUF[26] ^ this.salt[2];
this.v5h ^= BBUF[11] ^ BBUF[27] ^ this.salt[3];
this.v6l ^= BBUF[12] ^ BBUF[28] ^ this.salt[4];
this.v6h ^= BBUF[13] ^ BBUF[29] ^ this.salt[5];
this.v7l ^= BBUF[14] ^ BBUF[30] ^ this.salt[6];
this.v7h ^= BBUF[15] ^ BBUF[31] ^ this.salt[7];
clean(BBUF, BLAKE512_W);
}
}
/** Internal blake1-224 hash class. */
export class _BLAKE224 extends BLAKE1_32B {
constructor(opts: BlakeOpts = {}) {
super(28, B224_IV, 0b0000_0000, opts);
}
}
/** Internal blake1-256 hash class. */
export class _BLAKE256 extends BLAKE1_32B {
constructor(opts: BlakeOpts = {}) {
super(32, B256_IV, 0b0000_0001, opts);
}
}
/** Internal blake1-384 hash class. */
export class _BLAKE384 extends BLAKE1_64B {
constructor(opts: BlakeOpts = {}) {
super(48, B384_IV, 0b0000_0000, opts);
}
}
/** Internal blake1-512 hash class. */
export class _BLAKE512 extends BLAKE1_64B {
constructor(opts: BlakeOpts = {}) {
super(64, B512_IV, 0b0000_0001, opts);
}
}
/**
* Blake1-224 hash function.
* @param msg - message bytes to hash
* @param opts - Optional Blake1 settings. See {@link BlakeOpts}. If set,
* `opts.salt` must be exactly 16 bytes.
* @returns Digest bytes.
* @example
* Hash a message with Blake1-224.
* ```ts
* blake224(new Uint8Array([97, 98, 99]));
* ```
*/
export const blake224: TRet<CHash<_BLAKE224, BlakeOpts>> = /* @__PURE__ */ createHasher(
(opts) => new _BLAKE224(opts)
);
/**
* Blake1-256 hash function.
* @param msg - message bytes to hash
* @param opts - Optional Blake1 settings. See {@link BlakeOpts}. If set,
* `opts.salt` must be exactly 16 bytes.
* @returns Digest bytes.
* @example
* Hash a message with Blake1-256.
* ```ts
* blake256(new Uint8Array([97, 98, 99]));
* ```
*/
export const blake256: TRet<CHash<_BLAKE256, BlakeOpts>> = /* @__PURE__ */ createHasher(
(opts) => new _BLAKE256(opts)
);
/**
* Blake1-384 hash function.
* @param msg - message bytes to hash
* @param opts - Optional Blake1 settings. See {@link BlakeOpts}. If set,
* `opts.salt` must be exactly 32 bytes.
* @returns Digest bytes.
* @example
* Hash a message with Blake1-384.
* ```ts
* blake384(new Uint8Array([97, 98, 99]));
* ```
*/
export const blake384: TRet<CHash<_BLAKE384, BlakeOpts>> = /* @__PURE__ */ createHasher(
(opts) => new _BLAKE384(opts)
);
/**
* Blake1-512 hash function.
* @param msg - message bytes to hash
* @param opts - Optional Blake1 settings. See {@link BlakeOpts}. If set,
* `opts.salt` must be exactly 32 bytes.
* @returns Digest bytes.
* @example
* Hash a message with Blake1-512.
* ```ts
* blake512(new Uint8Array([97, 98, 99]));
* ```
*/
export const blake512: TRet<CHash<_BLAKE512, BlakeOpts>> = /* @__PURE__ */ createHasher(
(opts) => new _BLAKE512(opts)
);

582
electron/node_modules/@noble/hashes/src/blake2.ts generated vendored Normal file
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@ -0,0 +1,582 @@
/**
* blake2b (64-bit) & blake2s (8 to 32-bit) hash functions.
* b could have been faster, but there is no fast u64 in js, so s is 1.5x faster.
* @module
*/
import { BSIGMA, G1s, G2s } from './_blake.ts';
import { SHA256_IV } from './_md.ts';
import * as u64 from './_u64.ts';
// prettier-ignore
import {
abytes, aexists, anumber, aoutput,
clean, createHasher,
swap32IfBE, swap8IfBE,
u32,
type CHash,
type Hash,
type TArg,
type TRet
} from './utils.ts';
/**
* Blake hash options.
* `dkLen` is output length. `key` is used in MAC mode. `salt` is used in
* KDF mode.
*/
export type Blake2Opts = {
/** Desired digest length in bytes. RFC 7693 uses 1..64 for blake2b and 1..32 for blake2s. */
dkLen?: number;
/** Optional MAC key. */
key?: Uint8Array;
/** Optional salt mixed into initialization. */
salt?: Uint8Array;
/** Optional personalization bytes. */
personalization?: Uint8Array;
};
// Same IV words as `SHA512_IV`, but endian-swapped into LE u32 low/high halves
// for the BLAKE2b u64 helpers below.
const B2B_IV = /* @__PURE__ */ Uint32Array.from([
0xf3bcc908, 0x6a09e667, 0x84caa73b, 0xbb67ae85, 0xfe94f82b, 0x3c6ef372, 0x5f1d36f1, 0xa54ff53a,
0xade682d1, 0x510e527f, 0x2b3e6c1f, 0x9b05688c, 0xfb41bd6b, 0x1f83d9ab, 0x137e2179, 0x5be0cd19,
]);
// Shared synchronous BLAKE2b work vector as LE u32 low/high halves.
const BBUF = /* @__PURE__ */ new Uint32Array(32);
// BLAKE2b G mix split into two half-rounds over LE u32 low/high limbs.
function G1b(a: number, b: number, c: number, d: number, msg: TArg<Uint32Array>, x: number) {
// NOTE: V is LE here
const Xl = msg[x], Xh = msg[x + 1]; // prettier-ignore
let Al = BBUF[2 * a], Ah = BBUF[2 * a + 1]; // prettier-ignore
let Bl = BBUF[2 * b], Bh = BBUF[2 * b + 1]; // prettier-ignore
let Cl = BBUF[2 * c], Ch = BBUF[2 * c + 1]; // prettier-ignore
let Dl = BBUF[2 * d], Dh = BBUF[2 * d + 1]; // prettier-ignore
// v[a] = (v[a] + v[b] + x) | 0;
let ll = u64.add3L(Al, Bl, Xl);
Ah = u64.add3H(ll, Ah, Bh, Xh);
Al = ll | 0;
// v[d] = rotr(v[d] ^ v[a], 32)
({ Dh, Dl } = { Dh: Dh ^ Ah, Dl: Dl ^ Al });
({ Dh, Dl } = { Dh: u64.rotr32H(Dh, Dl), Dl: u64.rotr32L(Dh, Dl) });
// v[c] = (v[c] + v[d]) | 0;
({ h: Ch, l: Cl } = u64.add(Ch, Cl, Dh, Dl));
// v[b] = rotr(v[b] ^ v[c], 24)
({ Bh, Bl } = { Bh: Bh ^ Ch, Bl: Bl ^ Cl });
({ Bh, Bl } = { Bh: u64.rotrSH(Bh, Bl, 24), Bl: u64.rotrSL(Bh, Bl, 24) });
((BBUF[2 * a] = Al), (BBUF[2 * a + 1] = Ah));
((BBUF[2 * b] = Bl), (BBUF[2 * b + 1] = Bh));
((BBUF[2 * c] = Cl), (BBUF[2 * c + 1] = Ch));
((BBUF[2 * d] = Dl), (BBUF[2 * d + 1] = Dh));
}
// Second half-round of the same LE-limb BLAKE2b G mix; `x` is the message word offset.
function G2b(a: number, b: number, c: number, d: number, msg: TArg<Uint32Array>, x: number) {
// NOTE: V is LE here
const Xl = msg[x], Xh = msg[x + 1]; // prettier-ignore
let Al = BBUF[2 * a], Ah = BBUF[2 * a + 1]; // prettier-ignore
let Bl = BBUF[2 * b], Bh = BBUF[2 * b + 1]; // prettier-ignore
let Cl = BBUF[2 * c], Ch = BBUF[2 * c + 1]; // prettier-ignore
let Dl = BBUF[2 * d], Dh = BBUF[2 * d + 1]; // prettier-ignore
// v[a] = (v[a] + v[b] + x) | 0;
let ll = u64.add3L(Al, Bl, Xl);
Ah = u64.add3H(ll, Ah, Bh, Xh);
Al = ll | 0;
// v[d] = rotr(v[d] ^ v[a], 16)
({ Dh, Dl } = { Dh: Dh ^ Ah, Dl: Dl ^ Al });
({ Dh, Dl } = { Dh: u64.rotrSH(Dh, Dl, 16), Dl: u64.rotrSL(Dh, Dl, 16) });
// v[c] = (v[c] + v[d]) | 0;
({ h: Ch, l: Cl } = u64.add(Ch, Cl, Dh, Dl));
// v[b] = rotr(v[b] ^ v[c], 63)
({ Bh, Bl } = { Bh: Bh ^ Ch, Bl: Bl ^ Cl });
({ Bh, Bl } = { Bh: u64.rotrBH(Bh, Bl, 63), Bl: u64.rotrBL(Bh, Bl, 63) });
((BBUF[2 * a] = Al), (BBUF[2 * a + 1] = Ah));
((BBUF[2 * b] = Bl), (BBUF[2 * b + 1] = Bh));
((BBUF[2 * c] = Cl), (BBUF[2 * c + 1] = Ch));
((BBUF[2 * d] = Dl), (BBUF[2 * d + 1] = Dh));
}
function checkBlake2Opts(
outputLen: number,
opts: TArg<Blake2Opts | undefined> = {},
keyLen: number,
saltLen: number,
persLen: number
) {
anumber(keyLen);
// RFC 7693 §2.1 requires digest length nn in 1..keyLen.
if (outputLen <= 0 || outputLen > keyLen) throw new Error('outputLen bigger than keyLen');
const { key, salt, personalization } = opts;
// This API uses `undefined` for the RFC 7693 `kk = 0` case, so a provided key must be non-empty.
if (key !== undefined && (key.length < 1 || key.length > keyLen))
throw new Error('"key" expected to be undefined or of length=1..' + keyLen);
if (salt !== undefined) abytes(salt, saltLen, 'salt');
if (personalization !== undefined) abytes(personalization, persLen, 'personalization');
}
/** Internal base class for BLAKE2. */
export abstract class _BLAKE2<T extends _BLAKE2<T>> implements Hash<T> {
protected abstract compress(msg: Uint32Array, offset: number, isLast: boolean): void;
protected abstract get(): number[];
protected abstract set(...args: number[]): void;
abstract destroy(): void;
protected buffer: Uint8Array;
protected buffer32: Uint32Array;
protected finished = false;
protected destroyed = false;
protected length: number = 0;
protected pos: number = 0;
readonly blockLen: number;
readonly outputLen: number;
readonly canXOF: boolean = false;
constructor(blockLen: number, outputLen: number) {
anumber(blockLen);
anumber(outputLen);
this.blockLen = blockLen;
this.outputLen = outputLen;
this.buffer = new Uint8Array(blockLen);
this.buffer32 = u32(this.buffer);
}
update(data: TArg<Uint8Array>): this {
aexists(this);
abytes(data);
// Main difference with other hashes: there is flag for last block,
// so we cannot process current block before we know that there
// is the next one. This significantly complicates logic and reduces ability
// to do zero-copy processing
const { blockLen, buffer, buffer32 } = this;
const len = data.length;
const offset = data.byteOffset;
const buf = data.buffer;
for (let pos = 0; pos < len; ) {
// If buffer is full and we still have input (don't process last block, same as blake2s)
if (this.pos === blockLen) {
swap32IfBE(buffer32);
this.compress(buffer32, 0, false);
swap32IfBE(buffer32);
this.pos = 0;
}
const take = Math.min(blockLen - this.pos, len - pos);
const dataOffset = offset + pos;
// Zero-copy only for full, 4-byte-aligned, non-final blocks.
if (take === blockLen && !(dataOffset % 4) && pos + take < len) {
const data32 = new Uint32Array(buf, dataOffset, Math.floor((len - pos) / 4));
swap32IfBE(data32);
for (let pos32 = 0; pos + blockLen < len; pos32 += buffer32.length, pos += blockLen) {
this.length += blockLen;
this.compress(data32, pos32, false);
}
swap32IfBE(data32);
continue;
}
buffer.set(data.subarray(pos, pos + take), this.pos);
this.pos += take;
this.length += take;
pos += take;
}
return this;
}
digestInto(out: TArg<Uint8Array>): void {
aexists(this);
aoutput(out, this);
const { pos, buffer32 } = this;
this.finished = true;
// Padding
clean(this.buffer.subarray(pos));
swap32IfBE(buffer32);
this.compress(buffer32, 0, true);
swap32IfBE(buffer32);
// Reject unaligned views explicitly instead of hiding them behind a full scratch copy.
if (out.byteOffset & 3)
throw new RangeError(
'"digestInto() output" expected 4-byte aligned byteOffset, got ' + out.byteOffset
);
const state = this.get();
const out32 = u32(out);
const full = Math.floor(this.outputLen / 4);
for (let i = 0; i < full; i++) out32[i] = swap8IfBE(state[i]);
const tail = this.outputLen % 4;
if (!tail) return;
const off = full * 4;
const word = state[full];
for (let i = 0; i < tail; i++) out[off + i] = word >>> (8 * i);
}
digest(): TRet<Uint8Array> {
const { buffer, outputLen } = this;
this.digestInto(buffer);
// Return a copy so callers do not alias the instance scratch buffer used during finalization.
const res = buffer.slice(0, outputLen);
this.destroy();
return res as TRet<Uint8Array>;
}
_cloneInto(to?: T): T {
const { buffer, length, finished, destroyed, outputLen, pos } = this;
// Recreate only `dkLen`; key/salt/personalization are already absorbed into the copied state.
to ||= new (this.constructor as any)({ dkLen: outputLen }) as T;
to.set(...this.get());
to.buffer.set(buffer);
to.destroyed = destroyed;
to.finished = finished;
to.length = length;
to.pos = pos;
// @ts-ignore
to.outputLen = outputLen;
return to;
}
clone(): T {
return this._cloneInto();
}
}
/** Internal blake2b hash class with state stored as LE u32 low/high halves. */
export class _BLAKE2b extends _BLAKE2<_BLAKE2b> {
// Same IV words as SHA-512 / BLAKE2b, encoded as LE u32 low/high halves.
private v0l = B2B_IV[0] | 0;
private v0h = B2B_IV[1] | 0;
private v1l = B2B_IV[2] | 0;
private v1h = B2B_IV[3] | 0;
private v2l = B2B_IV[4] | 0;
private v2h = B2B_IV[5] | 0;
private v3l = B2B_IV[6] | 0;
private v3h = B2B_IV[7] | 0;
private v4l = B2B_IV[8] | 0;
private v4h = B2B_IV[9] | 0;
private v5l = B2B_IV[10] | 0;
private v5h = B2B_IV[11] | 0;
private v6l = B2B_IV[12] | 0;
private v6h = B2B_IV[13] | 0;
private v7l = B2B_IV[14] | 0;
private v7h = B2B_IV[15] | 0;
constructor(opts: Blake2Opts = {}) {
const olen = opts.dkLen === undefined ? 64 : opts.dkLen;
super(128, olen);
checkBlake2Opts(olen, opts, 64, 16, 16);
let { key, personalization, salt } = opts;
let keyLength = 0;
if (key !== undefined) {
abytes(key, undefined, 'key');
keyLength = key.length;
}
// RFC 7693 §2.5: xor `p[0] = 0x0101kknn` into the low 32 bits of `h[0]`;
// the high 32 bits stay at `IV[0]`.
this.v0l ^= this.outputLen | (keyLength << 8) | (0x01 << 16) | (0x01 << 24);
if (salt !== undefined) {
abytes(salt, undefined, 'salt');
const slt = u32(salt);
this.v4l ^= swap8IfBE(slt[0]);
this.v4h ^= swap8IfBE(slt[1]);
this.v5l ^= swap8IfBE(slt[2]);
this.v5h ^= swap8IfBE(slt[3]);
}
if (personalization !== undefined) {
abytes(personalization, undefined, 'personalization');
const pers = u32(personalization);
this.v6l ^= swap8IfBE(pers[0]);
this.v6h ^= swap8IfBE(pers[1]);
this.v7l ^= swap8IfBE(pers[2]);
this.v7h ^= swap8IfBE(pers[3]);
}
if (key !== undefined) {
// Pad to blockLen and update
const tmp = new Uint8Array(this.blockLen);
tmp.set(key);
this.update(tmp);
}
}
// prettier-ignore
protected get(): [
number, number, number, number, number, number, number, number,
number, number, number, number, number, number, number, number
] {
let { v0l, v0h, v1l, v1h, v2l, v2h, v3l, v3h, v4l, v4h, v5l, v5h, v6l, v6h, v7l, v7h } = this;
return [v0l, v0h, v1l, v1h, v2l, v2h, v3l, v3h, v4l, v4h, v5l, v5h, v6l, v6h, v7l, v7h];
}
// prettier-ignore
protected set(
v0l: number, v0h: number, v1l: number, v1h: number,
v2l: number, v2h: number, v3l: number, v3h: number,
v4l: number, v4h: number, v5l: number, v5h: number,
v6l: number, v6h: number, v7l: number, v7h: number
): void {
this.v0l = v0l | 0;
this.v0h = v0h | 0;
this.v1l = v1l | 0;
this.v1h = v1h | 0;
this.v2l = v2l | 0;
this.v2h = v2h | 0;
this.v3l = v3l | 0;
this.v3h = v3h | 0;
this.v4l = v4l | 0;
this.v4h = v4h | 0;
this.v5l = v5l | 0;
this.v5h = v5h | 0;
this.v6l = v6l | 0;
this.v6h = v6h | 0;
this.v7l = v7l | 0;
this.v7h = v7h | 0;
}
protected compress(msg: Uint32Array, offset: number, isLast: boolean): void {
this.get().forEach((v, i) => (BBUF[i] = v)); // First half from state.
BBUF.set(B2B_IV, 16); // Second half from IV.
let { h, l } = u64.fromBig(BigInt(this.length));
BBUF[24] = B2B_IV[8] ^ l; // Low word of the offset.
BBUF[25] = B2B_IV[9] ^ h; // High word.
// Invert all bits for last block
if (isLast) {
BBUF[28] = ~BBUF[28];
BBUF[29] = ~BBUF[29];
}
let j = 0;
const s = BSIGMA;
// SIGMA selects 64-bit message words; multiply by 2 because `msg` stores
// each word as [low32, high32].
for (let i = 0; i < 12; i++) {
G1b(0, 4, 8, 12, msg, offset + 2 * s[j++]);
G2b(0, 4, 8, 12, msg, offset + 2 * s[j++]);
G1b(1, 5, 9, 13, msg, offset + 2 * s[j++]);
G2b(1, 5, 9, 13, msg, offset + 2 * s[j++]);
G1b(2, 6, 10, 14, msg, offset + 2 * s[j++]);
G2b(2, 6, 10, 14, msg, offset + 2 * s[j++]);
G1b(3, 7, 11, 15, msg, offset + 2 * s[j++]);
G2b(3, 7, 11, 15, msg, offset + 2 * s[j++]);
G1b(0, 5, 10, 15, msg, offset + 2 * s[j++]);
G2b(0, 5, 10, 15, msg, offset + 2 * s[j++]);
G1b(1, 6, 11, 12, msg, offset + 2 * s[j++]);
G2b(1, 6, 11, 12, msg, offset + 2 * s[j++]);
G1b(2, 7, 8, 13, msg, offset + 2 * s[j++]);
G2b(2, 7, 8, 13, msg, offset + 2 * s[j++]);
G1b(3, 4, 9, 14, msg, offset + 2 * s[j++]);
G2b(3, 4, 9, 14, msg, offset + 2 * s[j++]);
}
this.v0l ^= BBUF[0] ^ BBUF[16];
this.v0h ^= BBUF[1] ^ BBUF[17];
this.v1l ^= BBUF[2] ^ BBUF[18];
this.v1h ^= BBUF[3] ^ BBUF[19];
this.v2l ^= BBUF[4] ^ BBUF[20];
this.v2h ^= BBUF[5] ^ BBUF[21];
this.v3l ^= BBUF[6] ^ BBUF[22];
this.v3h ^= BBUF[7] ^ BBUF[23];
this.v4l ^= BBUF[8] ^ BBUF[24];
this.v4h ^= BBUF[9] ^ BBUF[25];
this.v5l ^= BBUF[10] ^ BBUF[26];
this.v5h ^= BBUF[11] ^ BBUF[27];
this.v6l ^= BBUF[12] ^ BBUF[28];
this.v6h ^= BBUF[13] ^ BBUF[29];
this.v7l ^= BBUF[14] ^ BBUF[30];
this.v7h ^= BBUF[15] ^ BBUF[31];
clean(BBUF);
}
destroy(): void {
this.destroyed = true;
clean(this.buffer32);
this.set(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
}
}
/**
* Blake2b hash function. 64-bit. 1.5x slower than blake2s in JS.
* @param msg - message that would be hashed
* @param opts - Optional output, MAC, salt, and personalization settings.
* `dkLen` must be 1..64 bytes; `salt` and `personalization`, if present,
* must be 16 bytes each. See {@link Blake2Opts}.
* @returns Digest bytes.
* @example
* Hash a message with Blake2b.
* ```ts
* blake2b(new Uint8Array([97, 98, 99]));
* ```
*/
export const blake2b: TRet<CHash<_BLAKE2b, Blake2Opts>> = /* @__PURE__ */ createHasher(
(opts) => new _BLAKE2b(opts)
);
// =================
// Blake2S
// =================
/** Internal type, 16 numbers. */
// prettier-ignore
export type _Num16 = {
v0: number; v1: number; v2: number; v3: number;
v4: number; v5: number; v6: number; v7: number;
v8: number; v9: number; v10: number; v11: number;
v12: number; v13: number; v14: number; v15: number;
};
/**
* BLAKE2-compress core method.
* Runs only the round function over a caller-supplied local vector; callers initialize `v0..v15`
* and apply the final `h[i] ^= v[i] ^ v[i + 8]` fold themselves.
* @param s - flattened sigma schedule bytes
* @param offset - starting word offset inside `msg`, not a byte offset
* @param msg - message words
* @param rounds - round count to execute
* @param v0 - state word 0
* @param v1 - state word 1
* @param v2 - state word 2
* @param v3 - state word 3
* @param v4 - state word 4
* @param v5 - state word 5
* @param v6 - state word 6
* @param v7 - state word 7
* @param v8 - state word 8
* @param v9 - state word 9
* @param v10 - state word 10
* @param v11 - state word 11
* @param v12 - state word 12
* @param v13 - state word 13
* @param v14 - state word 14
* @param v15 - state word 15
* @returns Updated compression state words.
* @example
* Run the BLAKE2 compression core on zeroed state and message words.
* ```ts
* import { compress } from '@noble/hashes/blake2.js';
* const state = compress(
* new Uint8Array(16),
* 0,
* new Uint32Array(16),
* 1,
* 0, 0, 0, 0, 0, 0, 0, 0,
* 0, 0, 0, 0, 0, 0, 0, 0
* );
* state.v0;
* ```
*/
// prettier-ignore
export function compress(s: TArg<Uint8Array>, offset: number, msg: TArg<Uint32Array>, rounds: number,
v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number,
v8: number, v9: number, v10: number, v11: number, v12: number, v13: number, v14: number, v15: number,
): _Num16 {
let j = 0;
for (let i = 0; i < rounds; i++) {
({ a: v0, b: v4, c: v8, d: v12 } = G1s(v0, v4, v8, v12, msg[offset + s[j++]]));
({ a: v0, b: v4, c: v8, d: v12 } = G2s(v0, v4, v8, v12, msg[offset + s[j++]]));
({ a: v1, b: v5, c: v9, d: v13 } = G1s(v1, v5, v9, v13, msg[offset + s[j++]]));
({ a: v1, b: v5, c: v9, d: v13 } = G2s(v1, v5, v9, v13, msg[offset + s[j++]]));
({ a: v2, b: v6, c: v10, d: v14 } = G1s(v2, v6, v10, v14, msg[offset + s[j++]]));
({ a: v2, b: v6, c: v10, d: v14 } = G2s(v2, v6, v10, v14, msg[offset + s[j++]]));
({ a: v3, b: v7, c: v11, d: v15 } = G1s(v3, v7, v11, v15, msg[offset + s[j++]]));
({ a: v3, b: v7, c: v11, d: v15 } = G2s(v3, v7, v11, v15, msg[offset + s[j++]]));
({ a: v0, b: v5, c: v10, d: v15 } = G1s(v0, v5, v10, v15, msg[offset + s[j++]]));
({ a: v0, b: v5, c: v10, d: v15 } = G2s(v0, v5, v10, v15, msg[offset + s[j++]]));
({ a: v1, b: v6, c: v11, d: v12 } = G1s(v1, v6, v11, v12, msg[offset + s[j++]]));
({ a: v1, b: v6, c: v11, d: v12 } = G2s(v1, v6, v11, v12, msg[offset + s[j++]]));
({ a: v2, b: v7, c: v8, d: v13 } = G1s(v2, v7, v8, v13, msg[offset + s[j++]]));
({ a: v2, b: v7, c: v8, d: v13 } = G2s(v2, v7, v8, v13, msg[offset + s[j++]]));
({ a: v3, b: v4, c: v9, d: v14 } = G1s(v3, v4, v9, v14, msg[offset + s[j++]]));
({ a: v3, b: v4, c: v9, d: v14 } = G2s(v3, v4, v9, v14, msg[offset + s[j++]]));
}
return { v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15 };
}
// Blake2s reuses the SHA-256 IV words as-is.
const B2S_IV = /* @__PURE__ */ SHA256_IV.slice();
/** Internal blake2s hash class. */
export class _BLAKE2s extends _BLAKE2<_BLAKE2s> {
// Internal state, same as SHA-256
private v0 = B2S_IV[0] | 0;
private v1 = B2S_IV[1] | 0;
private v2 = B2S_IV[2] | 0;
private v3 = B2S_IV[3] | 0;
private v4 = B2S_IV[4] | 0;
private v5 = B2S_IV[5] | 0;
private v6 = B2S_IV[6] | 0;
private v7 = B2S_IV[7] | 0;
constructor(opts: Blake2Opts = {}) {
const olen = opts.dkLen === undefined ? 32 : opts.dkLen;
super(64, olen);
checkBlake2Opts(olen, opts, 32, 8, 8);
let { key, personalization, salt } = opts;
let keyLength = 0;
if (key !== undefined) {
abytes(key, undefined, 'key');
keyLength = key.length;
}
// RFC 7693 §2.5: xor `p[0] = 0x0101kknn` directly into `h[0]`, since
// BLAKE2s stores each state word as one `u32`.
this.v0 ^= this.outputLen | (keyLength << 8) | (0x01 << 16) | (0x01 << 24);
if (salt !== undefined) {
abytes(salt, undefined, 'salt');
const slt = u32(salt as Uint8Array);
this.v4 ^= swap8IfBE(slt[0]);
this.v5 ^= swap8IfBE(slt[1]);
}
if (personalization !== undefined) {
abytes(personalization, undefined, 'personalization');
const pers = u32(personalization as Uint8Array);
this.v6 ^= swap8IfBE(pers[0]);
this.v7 ^= swap8IfBE(pers[1]);
}
if (key !== undefined) {
// Pad to blockLen and update
const tmp = new Uint8Array(this.blockLen);
tmp.set(key);
this.update(tmp);
}
}
protected get(): [number, number, number, number, number, number, number, number] {
const { v0, v1, v2, v3, v4, v5, v6, v7 } = this;
return [v0, v1, v2, v3, v4, v5, v6, v7];
}
// prettier-ignore
protected set(
v0: number, v1: number, v2: number, v3: number, v4: number, v5: number, v6: number, v7: number
): void {
this.v0 = v0 | 0;
this.v1 = v1 | 0;
this.v2 = v2 | 0;
this.v3 = v3 | 0;
this.v4 = v4 | 0;
this.v5 = v5 | 0;
this.v6 = v6 | 0;
this.v7 = v7 | 0;
}
protected compress(msg: Uint32Array, offset: number, isLast: boolean): void {
const { h, l } = u64.fromBig(BigInt(this.length));
// Seed v8..v15 from the IV, xor the low/high 32-bit byte counter into
// v12/v13, and invert v14 on the final block.
// prettier-ignore
const { v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15 } =
compress(
BSIGMA, offset, msg, 10,
this.v0, this.v1, this.v2, this.v3, this.v4, this.v5, this.v6, this.v7,
B2S_IV[0], B2S_IV[1], B2S_IV[2], B2S_IV[3], l ^ B2S_IV[4], h ^ B2S_IV[5], isLast ? ~B2S_IV[6] : B2S_IV[6], B2S_IV[7]
);
this.v0 ^= v0 ^ v8;
this.v1 ^= v1 ^ v9;
this.v2 ^= v2 ^ v10;
this.v3 ^= v3 ^ v11;
this.v4 ^= v4 ^ v12;
this.v5 ^= v5 ^ v13;
this.v6 ^= v6 ^ v14;
this.v7 ^= v7 ^ v15;
}
destroy(): void {
this.destroyed = true;
clean(this.buffer32);
this.set(0, 0, 0, 0, 0, 0, 0, 0);
}
}
/**
* Blake2s hash function. Focuses on 8-bit to 32-bit platforms. 1.5x faster than blake2b in JS.
* @param msg - message that would be hashed
* @param opts - Optional output, MAC, salt, and personalization settings.
* `dkLen` must be 1..32 bytes; `salt` and `personalization`, if present,
* must be 8 bytes each. See {@link Blake2Opts}.
* @returns Digest bytes.
* @example
* Hash a message with Blake2s.
* ```ts
* blake2s(new Uint8Array([97, 98, 99]));
* ```
*/
export const blake2s: TRet<CHash<_BLAKE2s, Blake2Opts>> = /* @__PURE__ */ createHasher(
(opts) => new _BLAKE2s(opts)
);

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/**
* Blake3 fast hash is Blake2 with reduced security (round count). Can also be used as MAC & KDF.
*
* It is advertised as "the fastest cryptographic hash". However, it isn't true in JS.
* Why is this so slow? While it must be 6x faster than blake2b, perf diff is only 20%:
*
* * There is only 30% reduction in number of rounds from blake2s
* * Speed-up comes from tree structure, which is parallelized using SIMD & threading.
* These features are not present in JS, so we only get overhead from trees.
* * Parallelization only happens on 1024-byte chunks: there is no benefit for small inputs.
* * It is still possible to make it faster using: a) loop unrolling b) web workers c) wasm
* @module
*/
import { SHA256_IV } from './_md.ts';
import { fromBig } from './_u64.ts';
import { _BLAKE2, compress } from './blake2.ts';
// prettier-ignore
import {
abytes, aexists, anumber, aoutput,
clean,
copyBytes,
createHasher, swap32IfBE,
u32, u8,
type CHashXOF,
type HashXOF,
type TArg,
type TRet
} from './utils.ts';
// Constructor-time mode flags (`KEYED_HASH`, `DERIVE_*`) plus per-node tree
// flags (`CHUNK_*`, `PARENT`, `ROOT`).
const B3_Flags = {
CHUNK_START: 0b1,
CHUNK_END: 0b10,
PARENT: 0b100,
ROOT: 0b1000,
KEYED_HASH: 0b10000,
DERIVE_KEY_CONTEXT: 0b100000,
DERIVE_KEY_MATERIAL: 0b1000000,
} as const;
// Default BLAKE3 IV, cloned from the shared BLAKE2s / SHA-256 IV basis.
const B3_IV = /* @__PURE__ */ SHA256_IV.slice();
// Seven 16-word rounds of BLAKE3 message schedule, generated by repeatedly
// permuting the identity row.
const B3_SIGMA: TRet<Uint8Array> = /* @__PURE__ */ (() => {
const Id = Array.from({ length: 16 }, (_, i) => i);
const permute = (arr: number[]) =>
[2, 6, 3, 10, 7, 0, 4, 13, 1, 11, 12, 5, 9, 14, 15, 8].map((i) => arr[i]);
const res: number[] = [];
for (let i = 0, v = Id; i < 7; i++, v = permute(v)) res.push(...v);
return Uint8Array.from(res);
})();
/**
* Ensure to use EITHER `key` OR `context`, not both.
*
* * `key`: 32-byte MAC key.
* * `context`: caller-encoded KDF context bytes. If your protocol defines a
* string context, encode it before passing it here.
* A good default format for the original context string is
* "[application] [commit timestamp] [purpose]".
*/
export type Blake3Opts = {
/** Desired digest length in bytes. The BLAKE3 spec allows 0..2^64-1 bytes of output. */
dkLen?: number;
/** Optional 32-byte MAC key. */
key?: Uint8Array;
/** Optional KDF context bytes. */
context?: Uint8Array;
};
/** Blake3 hash. Can be used as MAC and KDF with caller-encoded context bytes. */
export class _BLAKE3 extends _BLAKE2<_BLAKE3> implements HashXOF<_BLAKE3> {
readonly canXOF = true;
private chunkPos = 0; // Position of current block in chunk
// How many chunks we already have; exact while this stays within
// JS's safe-integer range.
private chunksDone = 0;
private flags = 0 | 0;
private IV: Uint32Array;
private state: Uint32Array;
private stack: Uint32Array[] = [];
// Output
private posOut = 0;
private bufferOut32 = new Uint32Array(16);
private bufferOut: Uint8Array;
// Index of output chunk; exact while this stays within JS's
// safe-integer range.
private chunkOut = 0;
private enableXOF = true;
constructor(opts: Blake3Opts = {}, flags = 0) {
super(64, opts.dkLen === undefined ? 32 : opts.dkLen);
const { key, context } = opts;
const hasContext = context !== undefined;
if (key !== undefined) {
if (hasContext) throw new Error('Only "key" or "context" can be specified at same time');
abytes(key, 32, 'key');
const k = copyBytes(key);
this.IV = u32(k);
swap32IfBE(this.IV);
this.flags = flags | B3_Flags.KEYED_HASH;
} else if (hasContext) {
abytes(context, undefined, 'context');
const ctx = context;
const contextKey = new _BLAKE3({ dkLen: 32 }, B3_Flags.DERIVE_KEY_CONTEXT)
.update(ctx)
.digest();
this.IV = u32(contextKey);
swap32IfBE(this.IV);
this.flags = flags | B3_Flags.DERIVE_KEY_MATERIAL;
} else {
this.IV = B3_IV.slice();
this.flags = flags;
}
this.state = this.IV.slice();
this.bufferOut = u8(this.bufferOut32);
}
// _BLAKE2's scalar-state hooks are unused here: BLAKE3 keeps its tree/XOF state in arrays and
// copies it directly in _cloneInto().
protected get(): [] {
return [];
}
protected set(): void {}
// Truncated chunk/parent compression: seed v8..v15 as IV[0..3], t0, t1,
// block length, and flags, then keep only the first 8 output words.
private b2Compress(counter: number, flags: number, buf: Uint32Array, bufPos: number = 0) {
const { state: s, pos } = this;
const { h, l } = fromBig(BigInt(counter), true);
// prettier-ignore
const { v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15 } =
compress(
B3_SIGMA, bufPos, buf, 7,
s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7],
B3_IV[0], B3_IV[1], B3_IV[2], B3_IV[3], h, l, pos, flags
);
s[0] = v0 ^ v8;
s[1] = v1 ^ v9;
s[2] = v2 ^ v10;
s[3] = v3 ^ v11;
s[4] = v4 ^ v12;
s[5] = v5 ^ v13;
s[6] = v6 ^ v14;
s[7] = v7 ^ v15;
}
protected compress(buf: Uint32Array, bufPos: number = 0, isLast: boolean = false): void {
// Compress last block
let flags = this.flags;
if (!this.chunkPos) flags |= B3_Flags.CHUNK_START;
if (this.chunkPos === 15 || isLast) flags |= B3_Flags.CHUNK_END;
if (!isLast) this.pos = this.blockLen;
this.b2Compress(this.chunksDone, flags, buf, bufPos);
this.chunkPos += 1;
// If current block is last in chunk (16 blocks), then compress chunks
if (this.chunkPos === 16 || isLast) {
let chunk = this.state;
this.state = this.IV.slice();
// If not the last one, compress only when there are trailing zeros in chunk counter
// Chunks are used as a binary tree where the current stack is the path.
// Zero means the current leaf is finished and can be compressed.
// 1 (001) - leaf not finished (just push current chunk to stack)
// 2 (010) - leaf finished at depth=1 (merge with last elm on stack and push back)
// 3 (011) - last leaf not finished
// 4 (100) - leafs finished at depth=1 and depth=2
for (let last, chunks = this.chunksDone + 1; isLast || !(chunks & 1); chunks >>= 1) {
if (!(last = this.stack.pop())) break;
this.buffer32.set(last, 0);
this.buffer32.set(chunk, 8);
this.pos = this.blockLen;
this.b2Compress(0, this.flags | B3_Flags.PARENT, this.buffer32, 0);
chunk = this.state;
this.state = this.IV.slice();
}
this.chunksDone++;
this.chunkPos = 0;
this.stack.push(chunk);
}
this.pos = 0;
}
_cloneInto(to?: _BLAKE3): _BLAKE3 {
to = super._cloneInto(to) as _BLAKE3;
const { IV, flags, state, chunkPos, posOut, chunkOut, stack, chunksDone } = this;
to.state.set(state.slice());
// Clone each CV stack entry by value so extending or destroying the clone
// cannot alias the source tree state.
to.stack = stack.map((i) => Uint32Array.from(i));
to.IV.set(IV);
to.flags = flags;
to.chunkPos = chunkPos;
to.chunksDone = chunksDone;
to.posOut = posOut;
to.chunkOut = chunkOut;
to.enableXOF = this.enableXOF;
to.bufferOut32.set(this.bufferOut32);
return to;
}
destroy(): void {
this.destroyed = true;
clean(this.state, this.buffer32, this.IV, this.bufferOut32);
clean(...this.stack);
}
// Root/XOF compression: rerun the same ROOT inputs with incrementing output
// counter `t` and materialize all 16 output words.
// Same as b2Compress, but doesn't modify state and returns 16 u32 array (instead of 8)
private b2CompressOut() {
const { state: s, pos, flags, buffer32, bufferOut32: out32 } = this;
const { h, l } = fromBig(BigInt(this.chunkOut++));
swap32IfBE(buffer32);
// prettier-ignore
const { v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15 } =
compress(
B3_SIGMA, 0, buffer32, 7,
s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7],
B3_IV[0], B3_IV[1], B3_IV[2], B3_IV[3], l, h, pos, flags
);
out32[0] = v0 ^ v8;
out32[1] = v1 ^ v9;
out32[2] = v2 ^ v10;
out32[3] = v3 ^ v11;
out32[4] = v4 ^ v12;
out32[5] = v5 ^ v13;
out32[6] = v6 ^ v14;
out32[7] = v7 ^ v15;
out32[8] = s[0] ^ v8;
out32[9] = s[1] ^ v9;
out32[10] = s[2] ^ v10;
out32[11] = s[3] ^ v11;
out32[12] = s[4] ^ v12;
out32[13] = s[5] ^ v13;
out32[14] = s[6] ^ v14;
out32[15] = s[7] ^ v15;
swap32IfBE(buffer32);
swap32IfBE(out32);
this.posOut = 0;
}
protected finish(): void {
if (this.finished) return;
this.finished = true;
// Padding
clean(this.buffer.subarray(this.pos));
// Process last chunk
let flags = this.flags | B3_Flags.ROOT;
if (this.stack.length) {
// Finalize the current chunk first, then rerun the last parent
// compression as ROOT with t = 0 and b = 64.
flags |= B3_Flags.PARENT;
swap32IfBE(this.buffer32);
this.compress(this.buffer32, 0, true);
swap32IfBE(this.buffer32);
this.chunksDone = 0;
this.pos = this.blockLen;
} else {
flags |= (!this.chunkPos ? B3_Flags.CHUNK_START : 0) | B3_Flags.CHUNK_END;
}
this.flags = flags;
this.b2CompressOut();
}
private writeInto(out: TArg<Uint8Array>): TRet<Uint8Array> {
aexists(this, false);
abytes(out);
this.finish();
const { blockLen, bufferOut } = this;
for (let pos = 0, len = out.length; pos < len; ) {
if (this.posOut >= blockLen) this.b2CompressOut();
const take = Math.min(blockLen - this.posOut, len - pos);
out.set(bufferOut.subarray(this.posOut, this.posOut + take), pos);
this.posOut += take;
pos += take;
}
return out as TRet<Uint8Array>;
}
xofInto(out: TArg<Uint8Array>): TRet<Uint8Array> {
if (!this.enableXOF) throw new Error('XOF is not possible after digest call');
return this.writeInto(out);
}
xof(bytes: number): TRet<Uint8Array> {
anumber(bytes);
return this.xofInto(new Uint8Array(bytes));
}
digestInto(out: TArg<Uint8Array>): void {
aoutput(out, this);
if (this.finished) throw new Error('digest() was already called');
this.enableXOF = false;
// `aoutput(...)` allows oversized buffers; digestInto() must fill only the configured digest.
this.writeInto(out.subarray(0, this.outputLen));
this.destroy();
}
digest(): TRet<Uint8Array> {
const out = new Uint8Array(this.outputLen);
this.digestInto(out);
return out as TRet<Uint8Array>;
}
}
/**
* BLAKE3 hash function. Can be used as MAC and KDF.
* @param msg - message that would be hashed
* @param opts - Optional output, MAC, or KDF configuration. `key` must be
* exactly 32 bytes, `context` is caller-encoded bytes, and `dkLen` can be
* 0..2^64-1 via the XOF-backed output path. See {@link Blake3Opts}.
* @returns Digest bytes.
* @example
* Hash, MAC, or derive key material with BLAKE3.
* ```ts
* import { blake3 } from '@noble/hashes/blake3.js';
* import { utf8ToBytes } from '@noble/hashes/utils.js';
* const data = new Uint8Array(32);
* const hash = blake3(data);
* const mac = blake3(data, { key: new Uint8Array(32) });
* const kdf = blake3(data, { context: utf8ToBytes('application name') });
* ```
*/
export const blake3: TRet<CHashXOF<_BLAKE3, Blake3Opts>> = /* @__PURE__ */ createHasher(
(opts = {}) => new _BLAKE3(opts)
);

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/**
* Experimental KDF for AES.
* @module
*/
import { hkdf } from './hkdf.ts';
import { pbkdf2 as _pbkdf2 } from './pbkdf2.ts';
import { scrypt as _scrypt } from './scrypt.ts';
import { sha256 } from './sha2.ts';
import {
abytes,
bytesToHex,
clean,
createView,
hexToBytes,
kdfInputToBytes,
type TArg,
type TRet,
} from './utils.ts';
// A tiny KDF for various applications like AES key-gen.
// Uses HKDF in a non-standard way, so it's not "KDF-secure", only "PRF-secure".
// Which is good enough: assume sha2-256 retained preimage resistance.
// Fixed ESKDF scrypt work factor: interactive-latency target with about 512 MiB RAM per derivation.
const SCRYPT_FACTOR = /* @__PURE__ */ (() => 2 ** 19)();
// Fixed ESKDF PBKDF2 work factor: CPU-only companion branch in the same rough
// interactive-latency range.
const PBKDF2_FACTOR = /* @__PURE__ */ (() => 2 ** 17)();
/**
* Scrypt KDF with the fixed ESKDF policy tuple `{ N: 2^19, r: 8, p: 1, dkLen: 32 }`.
* @param password - user password string, UTF-8 encoded before entering RFC 7914
* @param salt - unique salt string, UTF-8 encoded before entering RFC 7914
* @returns Derived 32-byte key.
* @example
* Derive the 32-byte scrypt key used by ESKDF.
* ```ts
* scrypt('password123', 'user@example.com');
* ```
*/
export function scrypt(password: string, salt: string): TRet<Uint8Array> {
return _scrypt(password, salt, { N: SCRYPT_FACTOR, r: 8, p: 1, dkLen: 32 });
}
/**
* PBKDF2-HMAC-SHA256 with the fixed ESKDF policy tuple `{ sha256, c: 2^17, dkLen: 32 }`.
* @param password - user password string, UTF-8 encoded before entering PBKDF2-HMAC-SHA-256
* @param salt - unique salt string, UTF-8 encoded before entering PBKDF2-HMAC-SHA-256
* @returns Derived 32-byte key.
* @example
* Derive the 32-byte PBKDF2 key used by ESKDF.
* ```ts
* pbkdf2('password123', 'user@example.com');
* ```
*/
export function pbkdf2(password: string, salt: string): TRet<Uint8Array> {
return _pbkdf2(sha256, password, salt, { c: PBKDF2_FACTOR, dkLen: 32 });
}
// Combines two 32-byte byte arrays into a fresh 32-byte result without aliasing either input.
function xor32(a: TArg<Uint8Array>, b: TArg<Uint8Array>): TRet<Uint8Array> {
abytes(a, 32);
abytes(b, 32);
const arr = new Uint8Array(32);
for (let i = 0; i < 32; i++) {
arr[i] = a[i] ^ b[i];
}
return arr as TRet<Uint8Array>;
}
// All local string length checks are in JS UTF-16 code units, not UTF-8 bytes.
function strHasLength(str: string, min: number, max: number): boolean {
return typeof str === 'string' && str.length >= min && str.length <= max;
}
/**
* Derives main seed. Takes a lot of time; prefer the higher-level `eskdf(...)`
* flow unless you specifically need the raw main seed.
* Derives the main seed by xor'ing two branches:
* the scrypt branch uses a `0x01` separator byte on username/password,
* and the PBKDF2 branch uses `0x02`.
* Username and password strings are encoded by the underlying KDFs after the
* local separator bytes are appended.
* @param username - account identifier used as public salt
* @param password - user password string
* @returns Main 32-byte seed for the account.
* @throws If the username or password length is invalid. {@link Error}
* @example
* Derive the main ESKDF seed from username and password.
* ```ts
* deriveMainSeed('example-user', 'example-password');
* ```
*/
export function deriveMainSeed(username: string, password: string): TRet<Uint8Array> {
if (!strHasLength(username, 8, 255)) throw new Error('invalid username');
if (!strHasLength(password, 8, 255)) throw new Error('invalid password');
// Keep the protocol separators as the literal bytes 0x01 / 0x02 even after minification.
// Embedding them as non-printable characters directly can be awkward across
// JS tooling and environments.
const codes = { _1: 1, _2: 2 };
const sep = { s: String.fromCharCode(codes._1), p: String.fromCharCode(codes._2) };
const scr = scrypt(password + sep.s, username + sep.s);
const pbk = pbkdf2(password + sep.p, username + sep.p);
const res = xor32(scr, pbk);
clean(scr, pbk);
return res;
}
type AccountID = number | string;
/**
* Converts protocol & accountId pair to HKDF params:
* `info` is UTF-8 protocol bytes, numeric ids become 4-byte BE `salt`,
* and string ids become UTF-8 `salt` bytes.
*/
function getSaltInfo(protocol: string, accountId: AccountID = 0) {
// Note that length here also repeats two lines below
// We do an additional length check here to reduce the scope of DoS attacks
if (!(strHasLength(protocol, 3, 15) && /^[a-z0-9]{3,15}$/.test(protocol))) {
throw new Error('invalid protocol');
}
// Exact-match only: substring matches like `assh` / `mentor` must not widen the public whitelist.
const allowsStr = /^(password\d{0,3}|ssh|tor|file)$/.test(protocol);
let salt: Uint8Array; // Assigned below: either 4-byte BE account bytes or UTF-8 account bytes.
if (typeof accountId === 'string') {
if (!allowsStr) throw new Error('accountId must be a number');
if (!strHasLength(accountId, 1, 255))
throw new Error('accountId must be string of length 1..255');
salt = kdfInputToBytes(accountId);
} else if (Number.isSafeInteger(accountId)) {
if (accountId < 0 || accountId > Math.pow(2, 32) - 1) throw new Error('invalid accountId');
// Convert to Big Endian Uint32
salt = new Uint8Array(4);
createView(salt).setUint32(0, accountId, false);
} else {
throw new Error('accountId must be a number' + (allowsStr ? ' or string' : ''));
}
const info = kdfInputToBytes(protocol);
return { salt, info };
}
type OptsLength = { keyLength: number };
type OptsMod = { modulus: bigint };
type KeyOpts = undefined | OptsLength | OptsMod;
// Local modulus-size helper, not a general bigint-byte-length primitive:
// `<= 128n` is rejected by ESKDF policy.
function countBytes(num: bigint): number {
if (typeof num !== 'bigint' || num <= BigInt(128)) throw new Error('invalid number');
return Math.ceil(num.toString(2).length / 8);
}
/**
* Parses keyLength and modulus options to extract length of result key.
* If modulus is used, adds 64 bits to it per the FIPS 186-5 Appendix A.3.1 /
* A.4.1 extra-bits guidance.
*/
function getKeyLength(options: KeyOpts): number {
if (!options || typeof options !== 'object') return 32;
const hasLen = 'keyLength' in options;
const hasMod = 'modulus' in options;
if (hasLen && hasMod) throw new Error('cannot combine keyLength and modulus options');
if (!hasLen && !hasMod) throw new Error('must have either keyLength or modulus option');
// FIPS 186-5 Appendix A.3.1 / A.4.1 calls for at least 64 extra bits.
const l = hasMod ? countBytes(options.modulus) + 8 : options.keyLength;
if (!(typeof l === 'number' && l >= 16 && l <= 8192)) throw new Error('invalid keyLength');
return l;
}
/**
* Converts key to bigint and divides it by modulus. Big Endian.
* Adapts FIPS 186-5 Appendix A.4.1: `getKeyLength()` already requested the
* extra 64-bit margin, and this step maps the result into `1..modulus-1`.
*/
function modReduceKey(key: TArg<Uint8Array>, modulus: bigint): TRet<Uint8Array> {
const _1 = BigInt(1);
const num = BigInt('0x' + bytesToHex(key)); // check for ui8a, then bytesToNumber()
const res = (num % (modulus - _1)) + _1; // Remove 0 from output
if (res < _1) throw new Error('expected positive number'); // Guard against bad values
// Strip the extra 64-bit margin that `getKeyLength()` requested
// for bias reduction.
const len = key.length - 8;
const hex = res.toString(16).padStart(len * 2, '0'); // numberToHex()
const bytes = hexToBytes(hex);
if (bytes.length !== len) throw new Error('invalid length of result key');
return bytes;
}
/** Not using classes because constructor cannot be async. */
export interface ESKDF {
/**
* Derives a child key. Child key will not be associated with any
* other child key because of properties of underlying KDF.
*
* @param protocol - 3-15 character protocol name
* @param accountId - numeric account identifier, or a string id for
* `password\d{0,3}`, `ssh`, `tor`, or `file`
* @param options - Optional child-key shaping parameters. See {@link KeyOpts}.
* @returns Derived child key bytes.
*/
deriveChildKey: (protocol: string, accountId: AccountID, options?: KeyOpts) => TRet<Uint8Array>;
/** Deletes the main seed from the ESKDF instance. */
expire: () => void;
/**
* Human-readable fingerprint: first 6 bytes of
* `deriveChildKey('fingerprint', 0)`, formatted as uppercase
* colon-separated hex.
*/
fingerprint: string;
}
/**
* ESKDF
* @param username - username, email, or identifier, min: 8 characters, should have enough entropy
* @param password - password, min: 8 characters, should have enough entropy
* @returns Frozen API that derives child keys and exposes the account fingerprint.
* @throws If the username or password length is invalid. {@link Error}
* @example
* Derive account-specific child keys from the main ESKDF seed.
* ```ts
* const kdf = await eskdf('example-university', 'beginning-new-example');
* const key = kdf.deriveChildKey('aes', 0);
* const fingerprint = kdf.fingerprint;
* kdf.expire();
* ```
*/
export async function eskdf(username: string, password: string): Promise<TRet<ESKDF>> {
// We are using closure + object instead of class because
// we want to make `seed` non-accessible for any external function.
let seed: Uint8Array | undefined = deriveMainSeed(username, password);
function deriveCK(
protocol: string,
accountId: AccountID = 0,
options?: KeyOpts
): TRet<Uint8Array> {
// Reject expired instances before deriving any HKDF inputs from the closure-held seed.
abytes(seed!, 32);
const { salt, info } = getSaltInfo(protocol, accountId); // validate protocol & accountId
// Validate option shape and coarse length bounds;
// `hkdf()` still rejects non-integer lengths.
const keyLength = getKeyLength(options);
const key = hkdf(sha256, seed!, salt, info, keyLength);
// Modulus has already been validated
return options && 'modulus' in options ? modReduceKey(key, options.modulus) : key;
}
function expire() {
// Overwrite the closure-held seed before dropping the reference.
if (seed) seed.fill(1);
seed = undefined;
}
// prettier-ignore
const fingerprint = Array.from(deriveCK('fingerprint', 0))
.slice(0, 6)
.map((char) => char.toString(16).padStart(2, '0').toUpperCase())
.join(':');
return Object.freeze({ deriveChildKey: deriveCK, expire, fingerprint });
}

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/**
* HKDF (RFC 5869): extract + expand in one step.
* See {@link https://soatok.blog/2021/11/17/understanding-hkdf/}.
* @module
*/
import { hmac } from './hmac.ts';
import { abytes, ahash, anumber, type CHash, clean, type TArg, type TRet } from './utils.ts';
/**
* HKDF-extract from spec. Less important part. `HKDF-Extract(IKM, salt) -> PRK`
* Arguments position differs from spec (IKM is first one, since it is not optional)
* Local validation only checks `hash`; `ikm` / `salt` byte validation is delegated to `hmac()`.
* @param hash - hash function that would be used (e.g. sha256)
* @param ikm - input keying material, the initial key
* @param salt - optional salt value (a non-secret random value)
* @returns Pseudorandom key derived from input keying material.
* @example
* Run the HKDF extract step.
* ```ts
* import { extract } from '@noble/hashes/hkdf.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* extract(sha256, new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]));
* ```
*/
export function extract(
hash: TArg<CHash>,
ikm: TArg<Uint8Array>,
salt?: TArg<Uint8Array>
): TRet<Uint8Array> {
ahash(hash);
// NOTE: some libraries treat zero-length array as 'not provided';
// we don't, since we have undefined as 'not provided'
// https://github.com/RustCrypto/KDFs/issues/15
if (salt === undefined) salt = new Uint8Array(hash.outputLen);
return hmac(hash, salt, ikm);
}
// Shared mutable scratch byte for the RFC 5869 block counter `N`.
// Safe to reuse because `expand()` is synchronous and resets it with `clean(...)` before returning.
const HKDF_COUNTER = /* @__PURE__ */ Uint8Array.of(0);
// Shared RFC 5869 empty string for both `info === undefined` and the first-block `T(0)` input.
const EMPTY_BUFFER = /* @__PURE__ */ Uint8Array.of();
/**
* HKDF-expand from the spec. The most important part. `HKDF-Expand(PRK, info, L) -> OKM`
* @param hash - hash function that would be used (e.g. sha256)
* @param prk - a pseudorandom key of at least HashLen octets
* (usually, the output from the extract step)
* @param info - optional context and application specific information (can be a zero-length string)
* @param length - length of output keying material in bytes.
* RFC 5869 §2.3 allows `0..255*HashLen`, so `0` returns an empty OKM.
* @returns Output keying material with the requested length.
* @throws If the requested output length exceeds the HKDF limit
* for the selected hash. {@link Error}
* @example
* Run the HKDF expand step.
* ```ts
* import { expand } from '@noble/hashes/hkdf.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* expand(sha256, new Uint8Array(32), new Uint8Array([1, 2, 3]), 16);
* ```
*/
export function expand(
hash: TArg<CHash>,
prk: TArg<Uint8Array>,
info?: TArg<Uint8Array>,
length: number = 32
): TRet<Uint8Array> {
ahash(hash);
anumber(length, 'length');
abytes(prk, undefined, 'prk');
const olen = hash.outputLen;
// RFC 5869 §2.3: PRK is "a pseudorandom key of at least HashLen octets".
if (prk.length < olen) throw new Error('"prk" must be at least HashLen octets');
// RFC 5869 §2.3 only bounds `L` by `<= 255*HashLen`; `L=0` is valid and yields empty OKM.
if (length > 255 * olen) throw new Error('Length must be <= 255*HashLen');
const blocks = Math.ceil(length / olen);
if (info === undefined) info = EMPTY_BUFFER;
else abytes(info, undefined, 'info');
// first L(ength) octets of T
const okm = new Uint8Array(blocks * olen);
// Re-use HMAC instance between blocks
const HMAC = hmac.create(hash, prk);
const HMACTmp = HMAC._cloneInto();
const T = new Uint8Array(HMAC.outputLen);
for (let counter = 0; counter < blocks; counter++) {
HKDF_COUNTER[0] = counter + 1;
// T(0) = empty string (zero length)
// T(N) = HMAC-Hash(PRK, T(N-1) | info | N)
HMACTmp.update(counter === 0 ? EMPTY_BUFFER : T)
.update(info)
.update(HKDF_COUNTER)
.digestInto(T);
okm.set(T, olen * counter);
HMAC._cloneInto(HMACTmp);
}
HMAC.destroy();
HMACTmp.destroy();
clean(T, HKDF_COUNTER);
return okm.slice(0, length) as TRet<Uint8Array>;
}
/**
* HKDF (RFC 5869): derive keys from an initial input.
* Combines hkdf_extract + hkdf_expand in one step
* @param hash - hash function that would be used (e.g. sha256)
* @param ikm - input keying material, the initial key
* @param salt - optional salt value (a non-secret random value)
* @param info - optional context and application specific information bytes
* @param length - length of output keying material in bytes.
* RFC 5869 §2.3 allows `0..255*HashLen`, so `0` returns an empty OKM.
* @returns Output keying material derived from the input key.
* @throws If the requested output length exceeds the HKDF limit
* for the selected hash. {@link Error}
* @example
* HKDF (RFC 5869): derive keys from an initial input.
* ```ts
* import { hkdf } from '@noble/hashes/hkdf.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* import { randomBytes, utf8ToBytes } from '@noble/hashes/utils.js';
* const inputKey = randomBytes(32);
* const salt = randomBytes(32);
* const info = utf8ToBytes('application-key');
* const okm = hkdf(sha256, inputKey, salt, info, 32);
* ```
*/
export const hkdf = (
hash: TArg<CHash>,
ikm: TArg<Uint8Array>,
salt: TArg<Uint8Array | undefined>,
info: TArg<Uint8Array | undefined>,
length: number
): TRet<Uint8Array> => expand(hash, extract(hash, ikm, salt), info, length);

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/**
* HMAC: RFC2104 message authentication code.
* @module
*/
import {
abytes,
aexists,
ahash,
aoutput,
clean,
type CHash,
type Hash,
type TArg,
type TRet,
} from './utils.ts';
/**
* Internal class for HMAC.
* Accepts any byte key, although RFC 2104 §3 recommends keys at least
* `HashLen` bytes long.
*/
export class _HMAC<T extends Hash<T>> implements Hash<_HMAC<T>> {
oHash: T;
iHash: T;
blockLen: number;
outputLen: number;
canXOF = false;
private finished = false;
private destroyed = false;
constructor(hash: TArg<CHash>, key: TArg<Uint8Array>) {
ahash(hash);
abytes(key, undefined, 'key');
this.iHash = hash.create() as T;
if (typeof this.iHash.update !== 'function')
throw new Error('Expected instance of class which extends utils.Hash');
this.blockLen = this.iHash.blockLen;
this.outputLen = this.iHash.outputLen;
const blockLen = this.blockLen;
const pad = new Uint8Array(blockLen);
// blockLen can be bigger than outputLen
pad.set(key.length > blockLen ? hash.create().update(key).digest() : key);
for (let i = 0; i < pad.length; i++) pad[i] ^= 0x36;
this.iHash.update(pad);
// By doing update (processing of the first block) of the outer hash here,
// we can re-use it between multiple calls via clone.
this.oHash = hash.create() as T;
// Undo internal XOR && apply outer XOR
for (let i = 0; i < pad.length; i++) pad[i] ^= 0x36 ^ 0x5c;
this.oHash.update(pad);
clean(pad);
}
update(buf: TArg<Uint8Array>): this {
aexists(this);
this.iHash.update(buf);
return this;
}
digestInto(out: TArg<Uint8Array>): void {
aexists(this);
aoutput(out, this);
this.finished = true;
const buf = out.subarray(0, this.outputLen);
// Reuse the first outputLen bytes for the inner digest; the outer hash consumes them before
// overwriting that same prefix with the final tag, leaving any oversized tail untouched.
this.iHash.digestInto(buf);
this.oHash.update(buf);
this.oHash.digestInto(buf);
this.destroy();
}
digest(): TRet<Uint8Array> {
const out = new Uint8Array(this.oHash.outputLen);
this.digestInto(out);
return out as TRet<Uint8Array>;
}
_cloneInto(to?: _HMAC<T>): _HMAC<T> {
// Create new instance without calling constructor since the key
// is already in state and we don't know it.
to ||= Object.create(Object.getPrototypeOf(this), {});
const { oHash, iHash, finished, destroyed, blockLen, outputLen } = this;
to = to as this;
to.finished = finished;
to.destroyed = destroyed;
to.blockLen = blockLen;
to.outputLen = outputLen;
to.oHash = oHash._cloneInto(to.oHash);
to.iHash = iHash._cloneInto(to.iHash);
return to;
}
clone(): _HMAC<T> {
return this._cloneInto();
}
destroy(): void {
this.destroyed = true;
this.oHash.destroy();
this.iHash.destroy();
}
}
/**
* HMAC: RFC2104 message authentication code.
* @param hash - function that would be used e.g. sha256
* @param key - authentication key bytes
* @param message - message bytes to authenticate
* @returns Authentication tag bytes.
* @example
* Compute an RFC 2104 HMAC.
* ```ts
* import { hmac } from '@noble/hashes/hmac.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const mac = hmac(sha256, new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]));
* ```
*/
type HmacFn = {
(hash: TArg<CHash>, key: TArg<Uint8Array>, message: TArg<Uint8Array>): TRet<Uint8Array>;
create(hash: TArg<CHash>, key: TArg<Uint8Array>): TRet<_HMAC<any>>;
};
export const hmac: TRet<HmacFn> = /* @__PURE__ */ (() => {
const hmac_ = ((
hash: TArg<CHash>,
key: TArg<Uint8Array>,
message: TArg<Uint8Array>
): TRet<Uint8Array> => new _HMAC<any>(hash, key).update(message).digest()) as TRet<HmacFn>;
hmac_.create = (hash: TArg<CHash>, key: TArg<Uint8Array>): TRet<_HMAC<any>> =>
new _HMAC<any>(hash, key) as TRet<_HMAC<any>>;
return hmac_;
})();

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/**
* Audited & minimal JS implementation of hash functions, MACs, and KDFs.
* Check out individual modules.
* @module
* @example
```js
import {
sha256, sha384, sha512, sha224, sha512_224, sha512_256
} from '@noble/hashes/sha2.js';
import {
sha3_224, sha3_256, sha3_384, sha3_512,
keccak_224, keccak_256, keccak_384, keccak_512,
shake128, shake256
} from '@noble/hashes/sha3.js';
import {
cshake128, cshake256,
turboshake128, turboshake256,
kt128, kt256,
kmac128, kmac256,
tuplehash256, parallelhash256,
keccakprg
} from '@noble/hashes/sha3-addons.js';
import { blake3 } from '@noble/hashes/blake3.js';
import { blake2b, blake2s } from '@noble/hashes/blake2.js';
import { hmac } from '@noble/hashes/hmac.js';
import { hkdf } from '@noble/hashes/hkdf.js';
import { pbkdf2, pbkdf2Async } from '@noble/hashes/pbkdf2.js';
import { scrypt, scryptAsync } from '@noble/hashes/scrypt.js';
import { md5, ripemd160, sha1 } from '@noble/hashes/legacy.js';
import * as utils from '@noble/hashes/utils.js';
```
*/
throw new Error('root module cannot be imported: import submodules instead. Check out README');

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/**
SHA1 (RFC 3174), MD5 (RFC 1321), and RIPEMD160 legacy, weak hash functions.
RFC 2286 only covers HMAC-RIPEMD160 wrapper material and test vectors,
not the base RIPEMD-160 compression spec.
Don't use them in a new protocol. What "weak" means:
- Collisions can be made with 2^18 effort in MD5, 2^60 in SHA1, 2^80 in RIPEMD160.
- No practical pre-image attacks (only theoretical, 2^123.4)
- HMAC seems kinda ok: https://www.rfc-editor.org/rfc/rfc6151
* @module
*/
import { Chi, HashMD, Maj } from './_md.ts';
import { type CHash, clean, createHasher, rotl, type TRet } from './utils.ts';
/** Initial SHA-1 state from RFC 3174 §6.1. */
const SHA1_IV = /* @__PURE__ */ Uint32Array.from([
0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0,
]);
// Reusable 80-word SHA-1 message schedule buffer.
const SHA1_W = /* @__PURE__ */ new Uint32Array(80);
/** Internal SHA1 legacy hash class. */
export class _SHA1 extends HashMD<_SHA1> {
private A = SHA1_IV[0] | 0;
private B = SHA1_IV[1] | 0;
private C = SHA1_IV[2] | 0;
private D = SHA1_IV[3] | 0;
private E = SHA1_IV[4] | 0;
constructor() {
super(64, 20, 8, false);
}
protected get(): [number, number, number, number, number] {
const { A, B, C, D, E } = this;
return [A, B, C, D, E];
}
protected set(A: number, B: number, C: number, D: number, E: number): void {
this.A = A | 0;
this.B = B | 0;
this.C = C | 0;
this.D = D | 0;
this.E = E | 0;
}
protected process(view: DataView, offset: number): void {
for (let i = 0; i < 16; i++, offset += 4) SHA1_W[i] = view.getUint32(offset, false);
for (let i = 16; i < 80; i++)
SHA1_W[i] = rotl(SHA1_W[i - 3] ^ SHA1_W[i - 8] ^ SHA1_W[i - 14] ^ SHA1_W[i - 16], 1);
// Compression function main loop, 80 rounds
let { A, B, C, D, E } = this;
for (let i = 0; i < 80; i++) {
let F, K;
if (i < 20) {
F = Chi(B, C, D);
K = 0x5a827999;
} else if (i < 40) {
F = B ^ C ^ D;
K = 0x6ed9eba1;
} else if (i < 60) {
F = Maj(B, C, D);
K = 0x8f1bbcdc;
} else {
F = B ^ C ^ D;
K = 0xca62c1d6;
}
const T = (rotl(A, 5) + F + E + K + SHA1_W[i]) | 0;
E = D;
D = C;
C = rotl(B, 30);
B = A;
A = T;
}
// Add the compressed chunk to the current hash value
A = (A + this.A) | 0;
B = (B + this.B) | 0;
C = (C + this.C) | 0;
D = (D + this.D) | 0;
E = (E + this.E) | 0;
this.set(A, B, C, D, E);
}
protected roundClean(): void {
clean(SHA1_W);
}
destroy(): void {
// HashMD callers route post-destroy usability through `destroyed`; zeroizing alone still leaves
// update()/digest() callable on reused instances.
this.destroyed = true;
this.set(0, 0, 0, 0, 0);
clean(this.buffer);
}
}
/**
* SHA1 (RFC 3174) legacy hash function. It was cryptographically broken.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA1.
* ```ts
* sha1(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha1: TRet<CHash> = /* @__PURE__ */ createHasher(() => new _SHA1());
/** RFC 1321 `T[i]` uses `floor(2^32 * abs(sin(i)))`; this is the shared `2^32` scale factor. */
const p32 = /* @__PURE__ */ Math.pow(2, 32);
/** RFC 1321 `T[1..64]` table. */
const K = /* @__PURE__ */ Array.from({ length: 64 }, (_, i) =>
Math.floor(p32 * Math.abs(Math.sin(i + 1)))
);
/** MD5 initial state from RFC 1321, stored as 4 u32 words. */
const MD5_IV = /* @__PURE__ */ SHA1_IV.slice(0, 4);
// Reusable 16-word MD5 message block buffer.
const MD5_W = /* @__PURE__ */ new Uint32Array(16);
/** Internal MD5 legacy hash class. */
export class _MD5 extends HashMD<_MD5> {
private A = MD5_IV[0] | 0;
private B = MD5_IV[1] | 0;
private C = MD5_IV[2] | 0;
private D = MD5_IV[3] | 0;
constructor() {
super(64, 16, 8, true);
}
protected get(): [number, number, number, number] {
const { A, B, C, D } = this;
return [A, B, C, D];
}
protected set(A: number, B: number, C: number, D: number): void {
this.A = A | 0;
this.B = B | 0;
this.C = C | 0;
this.D = D | 0;
}
protected process(view: DataView, offset: number): void {
for (let i = 0; i < 16; i++, offset += 4) MD5_W[i] = view.getUint32(offset, true);
// Compression function main loop, 64 rounds
let { A, B, C, D } = this;
for (let i = 0; i < 64; i++) {
let F, g, s;
if (i < 16) {
F = Chi(B, C, D);
g = i;
s = [7, 12, 17, 22];
} else if (i < 32) {
// RFC 1321 round 2 uses G(B,C,D) = (B & D) | (C & ~D), which is `Chi(D, B, C)`.
F = Chi(D, B, C);
g = (5 * i + 1) % 16;
s = [5, 9, 14, 20];
} else if (i < 48) {
F = B ^ C ^ D;
g = (3 * i + 5) % 16;
s = [4, 11, 16, 23];
} else {
F = C ^ (B | ~D);
g = (7 * i) % 16;
s = [6, 10, 15, 21];
}
F = F + A + K[i] + MD5_W[g];
A = D;
D = C;
C = B;
B = B + rotl(F, s[i % 4]);
}
// Add the compressed chunk to the current hash value
A = (A + this.A) | 0;
B = (B + this.B) | 0;
C = (C + this.C) | 0;
D = (D + this.D) | 0;
this.set(A, B, C, D);
}
protected roundClean(): void {
clean(MD5_W);
}
destroy(): void {
// HashMD callers route post-destroy usability through `destroyed`; zeroizing alone still leaves
// update()/digest() callable on reused instances.
this.destroyed = true;
this.set(0, 0, 0, 0);
clean(this.buffer);
}
}
/**
* MD5 (RFC 1321) legacy hash function. It was cryptographically broken.
* MD5 architecture is similar to SHA1, with some differences:
* - Reduced output length: 16 bytes (128 bit) instead of 20
* - 64 rounds, instead of 80
* - Little-endian: could be faster, but will require more code
* - Non-linear index selection: huge speed-up for unroll
* - Per round constants: more memory accesses, additional speed-up for unroll
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with MD5.
* ```ts
* md5(new Uint8Array([97, 98, 99]));
* ```
*/
export const md5: TRet<CHash> = /* @__PURE__ */ createHasher(() => new _MD5());
// RIPEMD-160
// Permutation repeatedly applied to derive the later RIPEMD-160 message-order tables.
const Rho160 = /* @__PURE__ */ Uint8Array.from([
7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
]);
const Id160 = /* @__PURE__ */ (() => Uint8Array.from(new Array(16).fill(0).map((_, i) => i)))();
const Pi160 = /* @__PURE__ */ (() => Id160.map((i) => (9 * i + 5) % 16))();
// Five left/right message-word orderings for the RIPEMD-160 dual-lane rounds.
const idxLR = /* @__PURE__ */ (() => {
const L = [Id160];
const R = [Pi160];
const res = [L, R];
for (let i = 0; i < 4; i++) for (let j of res) j.push(j[i].map((k) => Rho160[k]));
return res;
})();
const idxL = /* @__PURE__ */ (() => idxLR[0])();
const idxR = /* @__PURE__ */ (() => idxLR[1])();
// const [idxL, idxR] = idxLR;
// Base per-group shift table before the left/right message-order permutations are applied.
const shifts160 = /* @__PURE__ */ [
[11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8],
[12, 13, 11, 15, 6, 9, 9, 7, 12, 15, 11, 13, 7, 8, 7, 7],
[13, 15, 14, 11, 7, 7, 6, 8, 13, 14, 13, 12, 5, 5, 6, 9],
[14, 11, 12, 14, 8, 6, 5, 5, 15, 12, 15, 14, 9, 9, 8, 6],
[15, 12, 13, 13, 9, 5, 8, 6, 14, 11, 12, 11, 8, 6, 5, 5],
].map((i) => Uint8Array.from(i));
const shiftsL160 = /* @__PURE__ */ idxL.map((idx, i) => idx.map((j) => shifts160[i][j]));
const shiftsR160 = /* @__PURE__ */ idxR.map((idx, i) => idx.map((j) => shifts160[i][j]));
// Five left-lane additive constants for RIPEMD-160.
const Kl160 = /* @__PURE__ */ Uint32Array.from([
0x00000000, 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xa953fd4e,
]);
// Five right-lane additive constants for RIPEMD-160.
const Kr160 = /* @__PURE__ */ Uint32Array.from([
0x50a28be6, 0x5c4dd124, 0x6d703ef3, 0x7a6d76e9, 0x00000000,
]);
// Called `f()` in the spec; valid `group` values are 0..4, and out-of-range
// inputs currently fall through to the group-4 branch.
function ripemd_f(group: number, x: number, y: number, z: number): number {
if (group === 0) return x ^ y ^ z;
if (group === 1) return (x & y) | (~x & z);
if (group === 2) return (x | ~y) ^ z;
if (group === 3) return (x & z) | (y & ~z);
return x ^ (y | ~z);
}
// Reusable 16-word RIPEMD-160 message block buffer.
const BUF_160 = /* @__PURE__ */ new Uint32Array(16);
/**
* Internal RIPEMD-160 legacy hash class.
* RFC 2286 only adds HMAC-RIPEMD160 material, not the core hash specification.
*/
export class _RIPEMD160 extends HashMD<_RIPEMD160> {
private h0 = 0x67452301 | 0;
private h1 = 0xefcdab89 | 0;
private h2 = 0x98badcfe | 0;
private h3 = 0x10325476 | 0;
private h4 = 0xc3d2e1f0 | 0;
constructor() {
super(64, 20, 8, true);
}
protected get(): [number, number, number, number, number] {
const { h0, h1, h2, h3, h4 } = this;
return [h0, h1, h2, h3, h4];
}
protected set(h0: number, h1: number, h2: number, h3: number, h4: number): void {
this.h0 = h0 | 0;
this.h1 = h1 | 0;
this.h2 = h2 | 0;
this.h3 = h3 | 0;
this.h4 = h4 | 0;
}
protected process(view: DataView, offset: number): void {
for (let i = 0; i < 16; i++, offset += 4) BUF_160[i] = view.getUint32(offset, true);
// prettier-ignore
let al = this.h0 | 0, ar = al,
bl = this.h1 | 0, br = bl,
cl = this.h2 | 0, cr = cl,
dl = this.h3 | 0, dr = dl,
el = this.h4 | 0, er = el;
// Instead of iterating 0 to 80, we split it into 5 groups
// And use the groups in constants, functions, etc. Much simpler
for (let group = 0; group < 5; group++) {
const rGroup = 4 - group;
const hbl = Kl160[group], hbr = Kr160[group]; // prettier-ignore
const rl = idxL[group], rr = idxR[group]; // prettier-ignore
const sl = shiftsL160[group], sr = shiftsR160[group]; // prettier-ignore
for (let i = 0; i < 16; i++) {
const tl = (rotl(al + ripemd_f(group, bl, cl, dl) + BUF_160[rl[i]] + hbl, sl[i]) + el) | 0;
al = el, el = dl, dl = rotl(cl, 10) | 0, cl = bl, bl = tl; // prettier-ignore
}
// 2 loops are 10% faster
for (let i = 0; i < 16; i++) {
const tr = (rotl(ar + ripemd_f(rGroup, br, cr, dr) + BUF_160[rr[i]] + hbr, sr[i]) + er) | 0;
ar = er, er = dr, dr = rotl(cr, 10) | 0, cr = br, br = tr; // prettier-ignore
}
}
// Add the compressed chunk to the current hash value
// Final recombination cross-adds the left/right lane accumulators into the next h0..h4 order.
this.set(
(this.h1 + cl + dr) | 0,
(this.h2 + dl + er) | 0,
(this.h3 + el + ar) | 0,
(this.h4 + al + br) | 0,
(this.h0 + bl + cr) | 0
);
}
protected roundClean(): void {
clean(BUF_160);
}
destroy(): void {
this.destroyed = true;
clean(this.buffer);
this.set(0, 0, 0, 0, 0);
}
}
/**
* RIPEMD-160 - a legacy hash function from 1990s.
* RFC 2286 only covers HMAC-RIPEMD160 test material; the links below point
* at the base RIPEMD-160 references.
* * {@link https://homes.esat.kuleuven.be/~bosselae/ripemd160.html}
* * {@link https://homes.esat.kuleuven.be/~bosselae/ripemd160/pdf/AB-9601/AB-9601.pdf}
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with RIPEMD-160.
* ```ts
* ripemd160(new Uint8Array([97, 98, 99]));
* ```
*/
export const ripemd160: TRet<CHash> = /* @__PURE__ */ createHasher(() => new _RIPEMD160());

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/**
* PBKDF (RFC 2898). Can be used to create a key from password and salt.
* @module
*/
import { hmac } from './hmac.ts';
// prettier-ignore
import {
ahash, anumber,
asyncLoop, checkOpts, clean, createView, kdfInputToBytes,
type CHash,
type Hash,
type KDFInput,
type TArg,
type TRet
} from './utils.ts';
/**
* PBKDF2 options:
* * c: iterations, should probably be higher than 100_000
* * dkLen: desired length of derived key in bytes, must be `>= 1` per RFC 8018 §5.2
* * asyncTick: max time in ms for which async function can block execution
*/
export type Pbkdf2Opt = {
/** Iteration count. Higher values increase CPU cost. */
c: number;
/** Desired derived key length in bytes, must be `>= 1` per RFC 8018 §5.2. */
dkLen?: number;
/** Max scheduler block time in milliseconds for the async variant. */
asyncTick?: number;
};
// Common start and end for sync/async functions
function pbkdf2Init(
hash: TArg<CHash>,
_password: TArg<KDFInput>,
_salt: TArg<KDFInput>,
_opts: TArg<Pbkdf2Opt>
) {
ahash(hash);
const opts = checkOpts({ dkLen: 32, asyncTick: 10 }, _opts);
const { c, dkLen, asyncTick } = opts;
anumber(c, 'c');
anumber(dkLen, 'dkLen');
anumber(asyncTick, 'asyncTick');
if (c < 1) throw new Error('iterations (c) must be >= 1');
// RFC 8018 §5.2 defines `dkLen` as "a positive integer".
if (dkLen < 1) throw new Error('"dkLen" must be >= 1');
// RFC 8018 §5.2 step 1 requires rejecting oversize `dkLen`
// before allocating the destination buffer.
if (dkLen > (2 ** 32 - 1) * hash.outputLen) throw new Error('derived key too long');
const password = kdfInputToBytes(_password, 'password');
const salt = kdfInputToBytes(_salt, 'salt');
// DK = PBKDF2(PRF, Password, Salt, c, dkLen);
const DK = new Uint8Array(dkLen);
// U1 = PRF(Password, Salt + INT_32_BE(i))
const PRF = hmac.create(hash, password);
// Cache PRF(P, S || ...) prefix state so each block only appends INT_32_BE(i).
const PRFSalt = PRF._cloneInto().update(salt);
return { c, dkLen, asyncTick, DK, PRF, PRFSalt };
}
function pbkdf2Output<T extends Hash<T>>(
PRF: TArg<Hash<T>>,
PRFSalt: TArg<Hash<T>>,
DK: TArg<Uint8Array>,
prfW: TArg<Hash<T> | undefined>,
u: TArg<Uint8Array>
): TRet<Uint8Array> {
// Shared sync/async cleanup point: wipe transient PRF state
// while preserving the derived key buffer.
PRF.destroy();
PRFSalt.destroy();
if (prfW) prfW.destroy();
clean(u);
return DK as TRet<Uint8Array>;
}
/**
* PBKDF2-HMAC: RFC 8018 key derivation function.
* @param hash - hash function that would be used e.g. sha256
* @param password - password from which a derived key is generated;
* JS string inputs are UTF-8 encoded first
* @param salt - cryptographic salt; JS string inputs are UTF-8 encoded first
* @param opts - PBKDF2 work factor and output settings. `dkLen`, if provided,
* must be `>= 1` per RFC 8018 §5.2. See {@link Pbkdf2Opt}.
* @returns Derived key bytes.
* @throws If the PBKDF2 iteration count or derived-key settings are invalid. {@link Error}
* @example
* PBKDF2-HMAC: RFC 2898 key derivation function.
* ```ts
* import { pbkdf2 } from '@noble/hashes/pbkdf2.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const key = pbkdf2(sha256, 'password', 'salt', { dkLen: 32, c: Math.pow(2, 18) });
* ```
*/
export function pbkdf2(
hash: TArg<CHash>,
password: TArg<KDFInput>,
salt: TArg<KDFInput>,
opts: TArg<Pbkdf2Opt>
): TRet<Uint8Array> {
const { c, dkLen, DK, PRF, PRFSalt } = pbkdf2Init(hash, password, salt, opts);
let prfW: any; // Working copy
const arr = new Uint8Array(4);
const view = createView(arr);
const u = new Uint8Array(PRF.outputLen);
// DK = T1 + T2 + ⋯ + Tdklen/hlen
for (let ti = 1, pos = 0; pos < dkLen; ti++, pos += PRF.outputLen) {
// Ti = F(Password, Salt, c, i)
// The last Ti view can be shorter than hLen, which applies
// RFC 8018 §5.2 step 4's T_l<0..r-1> truncation without extra copies.
const Ti = DK.subarray(pos, pos + PRF.outputLen);
view.setInt32(0, ti, false);
// F(Password, Salt, c, i) = U1 ^ U2 ^ ⋯ ^ Uc
// U1 = PRF(Password, Salt + INT_32_BE(i))
(prfW = PRFSalt._cloneInto(prfW)).update(arr).digestInto(u);
Ti.set(u.subarray(0, Ti.length));
for (let ui = 1; ui < c; ui++) {
// Uc = PRF(Password, Uc−1)
PRF._cloneInto(prfW).update(u).digestInto(u);
for (let i = 0; i < Ti.length; i++) Ti[i] ^= u[i];
}
}
return pbkdf2Output(PRF, PRFSalt, DK, prfW, u);
}
/**
* PBKDF2-HMAC: RFC 8018 key derivation function. Async version.
* @param hash - hash function that would be used e.g. sha256
* @param password - password from which a derived key is generated;
* JS string inputs are UTF-8 encoded first
* @param salt - cryptographic salt; JS string inputs are UTF-8 encoded first
* @param opts - PBKDF2 work factor and output settings. `dkLen`, if provided,
* must be `>= 1` per RFC 8018 §5.2. `asyncTick` is only a local
* scheduler-yield knob for this JS wrapper, not part of RFC 8018.
* See {@link Pbkdf2Opt}.
* @returns Promise resolving to derived key bytes.
* @throws If the PBKDF2 iteration count or derived-key settings are invalid. {@link Error}
* @example
* PBKDF2-HMAC: RFC 2898 key derivation function.
* ```ts
* import { pbkdf2Async } from '@noble/hashes/pbkdf2.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const key = await pbkdf2Async(sha256, 'password', 'salt', { dkLen: 32, c: 500_000 });
* ```
*/
export async function pbkdf2Async(
hash: TArg<CHash>,
password: TArg<KDFInput>,
salt: TArg<KDFInput>,
opts: TArg<Pbkdf2Opt>
): Promise<TRet<Uint8Array>> {
const { c, dkLen, asyncTick, DK, PRF, PRFSalt } = pbkdf2Init(hash, password, salt, opts);
let prfW: any; // Working copy
const arr = new Uint8Array(4);
const view = createView(arr);
const u = new Uint8Array(PRF.outputLen);
// DK = T1 + T2 + ⋯ + Tdklen/hlen
for (let ti = 1, pos = 0; pos < dkLen; ti++, pos += PRF.outputLen) {
// Ti = F(Password, Salt, c, i)
// The last Ti view can be shorter than hLen, which applies
// RFC 8018 §5.2 step 4's T_l<0..r-1> truncation without extra copies.
const Ti = DK.subarray(pos, pos + PRF.outputLen);
view.setInt32(0, ti, false);
// F(Password, Salt, c, i) = U1 ^ U2 ^ ⋯ ^ Uc
// U1 = PRF(Password, Salt + INT_32_BE(i))
(prfW = PRFSalt._cloneInto(prfW)).update(arr).digestInto(u);
Ti.set(u.subarray(0, Ti.length));
await asyncLoop(c - 1, asyncTick, () => {
// Uc = PRF(Password, Uc−1)
PRF._cloneInto(prfW).update(u).digestInto(u);
for (let i = 0; i < Ti.length; i++) Ti[i] ^= u[i];
});
}
return pbkdf2Output(PRF, PRFSalt, DK, prfW, u);
}

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/**
* RFC 7914 Scrypt KDF. Can be used to create a key from password and salt.
* @module
*/
import { pbkdf2 } from './pbkdf2.ts';
import { sha256 } from './sha2.ts';
// prettier-ignore
import {
anumber, asyncLoop,
checkOpts, clean,
rotl,
swap32IfBE,
u32,
type KDFInput,
type TArg,
type TRet
} from './utils.ts';
// The main Scrypt loop: uses Salsa extensively.
// Six versions of the function were tried, this is the fastest one.
// RFC 7914 §3 / §4 step 2 applies Salsa20/8 to one 16-word (64-byte) block
// after xor'ing two such blocks.
// The local `y*` snapshot keeps the xor input stable even when `out` aliases `prev` or `input`.
// prettier-ignore
function XorAndSalsa(
prev: TArg<Uint32Array>,
pi: number,
input: TArg<Uint32Array>,
ii: number,
out: TArg<Uint32Array>,
oi: number
) {
// Based on https://cr.yp.to/salsa20.html and RFC 7914's Salsa20/8 core.
// Xor blocks
let y00 = prev[pi++] ^ input[ii++], y01 = prev[pi++] ^ input[ii++];
let y02 = prev[pi++] ^ input[ii++], y03 = prev[pi++] ^ input[ii++];
let y04 = prev[pi++] ^ input[ii++], y05 = prev[pi++] ^ input[ii++];
let y06 = prev[pi++] ^ input[ii++], y07 = prev[pi++] ^ input[ii++];
let y08 = prev[pi++] ^ input[ii++], y09 = prev[pi++] ^ input[ii++];
let y10 = prev[pi++] ^ input[ii++], y11 = prev[pi++] ^ input[ii++];
let y12 = prev[pi++] ^ input[ii++], y13 = prev[pi++] ^ input[ii++];
let y14 = prev[pi++] ^ input[ii++], y15 = prev[pi++] ^ input[ii++];
// Save state to temporary variables (salsa)
let x00 = y00, x01 = y01, x02 = y02, x03 = y03,
x04 = y04, x05 = y05, x06 = y06, x07 = y07,
x08 = y08, x09 = y09, x10 = y10, x11 = y11,
x12 = y12, x13 = y13, x14 = y14, x15 = y15;
// Main loop (salsa)
for (let i = 0; i < 8; i += 2) {
x04 ^= rotl(x00 + x12 | 0, 7); x08 ^= rotl(x04 + x00 | 0, 9);
x12 ^= rotl(x08 + x04 | 0, 13); x00 ^= rotl(x12 + x08 | 0, 18);
x09 ^= rotl(x05 + x01 | 0, 7); x13 ^= rotl(x09 + x05 | 0, 9);
x01 ^= rotl(x13 + x09 | 0, 13); x05 ^= rotl(x01 + x13 | 0, 18);
x14 ^= rotl(x10 + x06 | 0, 7); x02 ^= rotl(x14 + x10 | 0, 9);
x06 ^= rotl(x02 + x14 | 0, 13); x10 ^= rotl(x06 + x02 | 0, 18);
x03 ^= rotl(x15 + x11 | 0, 7); x07 ^= rotl(x03 + x15 | 0, 9);
x11 ^= rotl(x07 + x03 | 0, 13); x15 ^= rotl(x11 + x07 | 0, 18);
x01 ^= rotl(x00 + x03 | 0, 7); x02 ^= rotl(x01 + x00 | 0, 9);
x03 ^= rotl(x02 + x01 | 0, 13); x00 ^= rotl(x03 + x02 | 0, 18);
x06 ^= rotl(x05 + x04 | 0, 7); x07 ^= rotl(x06 + x05 | 0, 9);
x04 ^= rotl(x07 + x06 | 0, 13); x05 ^= rotl(x04 + x07 | 0, 18);
x11 ^= rotl(x10 + x09 | 0, 7); x08 ^= rotl(x11 + x10 | 0, 9);
x09 ^= rotl(x08 + x11 | 0, 13); x10 ^= rotl(x09 + x08 | 0, 18);
x12 ^= rotl(x15 + x14 | 0, 7); x13 ^= rotl(x12 + x15 | 0, 9);
x14 ^= rotl(x13 + x12 | 0, 13); x15 ^= rotl(x14 + x13 | 0, 18);
}
// Write output (salsa)
out[oi++] = (y00 + x00) | 0; out[oi++] = (y01 + x01) | 0;
out[oi++] = (y02 + x02) | 0; out[oi++] = (y03 + x03) | 0;
out[oi++] = (y04 + x04) | 0; out[oi++] = (y05 + x05) | 0;
out[oi++] = (y06 + x06) | 0; out[oi++] = (y07 + x07) | 0;
out[oi++] = (y08 + x08) | 0; out[oi++] = (y09 + x09) | 0;
out[oi++] = (y10 + x10) | 0; out[oi++] = (y11 + x11) | 0;
out[oi++] = (y12 + x12) | 0; out[oi++] = (y13 + x13) | 0;
out[oi++] = (y14 + x14) | 0; out[oi++] = (y15 + x15) | 0;
}
function BlockMix(
input: TArg<Uint32Array>,
ii: number,
out: TArg<Uint32Array>,
oi: number,
r: number
) {
// The block B is `r` 128-byte chunks, i.e. `2r` 16-word (64-byte) Salsa blocks.
let head = oi + 0;
let tail = oi + 16 * r;
for (let i = 0; i < 16; i++) out[tail + i] = input[ii + (2 * r - 1) * 16 + i]; // X ← B[2r−1]
for (let i = 0; i < r; i++, head += 16, ii += 16) {
// RFC 7914 §4 step 3 outputs `Y[0], Y[2], ...` first, then `Y[1], Y[3], ...`;
// `head` and `tail` lay out those even/odd halves in place.
XorAndSalsa(out, tail, input, ii, out, head); // head[i] = Salsa(blockIn[2*i] ^ tail[i-1])
if (i > 0) tail += 16; // First iteration overwrites tmp value in tail
// tail[i] = Salsa(blockIn[2*i+1] ^ head[i])
XorAndSalsa(out, head, input, (ii += 16), out, tail);
}
}
/**
* Scrypt options:
* - `N` is cpu/mem work factor (power of 2 e.g. `2**18`)
* - `r` is block size (8 is common), fine-tunes sequential memory read size and performance
* - `p` is parallelization factor (1 is common)
* - `dkLen` is output key length in bytes e.g. 32, and must be `>= 1` per RFC 7914 §2.
* - `asyncTick` - (default: 10) max time in ms for which async function can block execution
* - `maxmem` - (default: `1024 ** 3 + 1024` aka 1GB+1KB). A limit that the app could use for scrypt
* - `onProgress` - callback function that would be executed for progress report
*/
export type ScryptOpts = {
/** CPU and memory work factor. Must be a power of two. */
N: number;
/** Block size parameter. */
r: number;
/** Parallelization factor. */
p: number;
/** Desired derived key length in bytes, must be `>= 1` per RFC 7914 §2. */
dkLen?: number;
/** Max scheduler block time in milliseconds for the async variant. */
asyncTick?: number;
/** Maximum temporary memory budget in bytes. */
maxmem?: number;
/**
* Optional progress callback invoked during long-running derivations.
* param progress - completion fraction in the `0..1` range
*/
onProgress?: (progress: number) => void;
};
// Common prologue and epilogue for sync/async functions
function scryptInit(password: TArg<KDFInput>, salt: TArg<KDFInput>, _opts?: TArg<ScryptOpts>) {
// Maxmem - 1GB+1KB by default
const opts = checkOpts(
{
dkLen: 32,
asyncTick: 10,
maxmem: 1024 ** 3 + 1024,
},
_opts
);
const { N, r, p, dkLen, asyncTick, maxmem, onProgress } = opts;
anumber(N, 'N');
anumber(r, 'r');
anumber(p, 'p');
anumber(dkLen, 'dkLen');
anumber(asyncTick, 'asyncTick');
anumber(maxmem, 'maxmem');
if (onProgress !== undefined && typeof onProgress !== 'function')
throw new Error('progressCb must be a function');
const blockSize = 128 * r;
const blockSize32 = blockSize / 4;
// Max N is 2^32 (Integrify is 32-bit).
// Real limit can be 2^22: some JS engines limit Uint8Array to 4GB.
// Spec check `N >= 2^(blockSize / 8)` is not done for compat with popular libs,
// which used incorrect r: 1, p: 8. Also, the check seems to be a spec error:
// https://www.rfc-editor.org/errata_search.php?rfc=7914
const pow32 = Math.pow(2, 32);
if (N <= 1 || (N & (N - 1)) !== 0 || N > pow32)
throw new Error('"N" expected a power of 2, and 2^1 <= N <= 2^32');
if (p < 1 || p > ((pow32 - 1) * 32) / blockSize)
throw new Error('"p" expected integer 1..((2^32 - 1) * 32) / (128 * r)');
// RFC 7914 §2 defines `dkLen` as a positive integer.
if (dkLen < 1 || dkLen > (pow32 - 1) * 32)
throw new Error('"dkLen" expected integer 1..(2^32 - 1) * 32');
// Include the shared `tmp` scratch block so `maxmem` matches noble's actual temporary allocation.
// Node requires more headroom here, so this accounting is intentionally noble-specific.
const memUsed = blockSize * (N + p + 1);
if (memUsed > maxmem)
throw new Error(
'"maxmem" limit was hit: memUsed(128*r*(N+p+1))=' + memUsed + ', maxmem=' + maxmem
);
// [B0...Bp−1] ← PBKDF2HMAC-SHA256(Passphrase, Salt, 1, blockSize*ParallelizationFactor)
// Since it has only one iteration there is no reason to use async variant
const B = pbkdf2(sha256, password, salt, { c: 1, dkLen: blockSize * p });
const B32 = u32(B);
// Re-used between parallel iterations. Array(iterations) of B
const V = u32(new Uint8Array(blockSize * N));
const tmp = u32(new Uint8Array(blockSize));
let blockMixCb = () => {};
if (onProgress) {
const totalBlockMix = 2 * N * p;
// Invoke callback if progress changes from 10.01 to 10.02
// Allows to draw smooth progress bar on up to 8K screen
const callbackPer = Math.max(Math.floor(totalBlockMix / 10000), 1);
let blockMixCnt = 0;
blockMixCb = () => {
blockMixCnt++;
if (onProgress && (!(blockMixCnt % callbackPer) || blockMixCnt === totalBlockMix))
onProgress(blockMixCnt / totalBlockMix);
};
}
return { N, r, p, dkLen, blockSize32, V, B32, B, tmp, blockMixCb, asyncTick };
}
function scryptOutput(
password: TArg<KDFInput>,
dkLen: number,
B: TArg<Uint8Array>,
V: TArg<Uint32Array>,
tmp: TArg<Uint32Array>
): TRet<Uint8Array> {
// Shared final PBKDF2-and-cleanup step: keep the derived key, wipe the scrypt workspace.
const res = pbkdf2(sha256, password, B, { c: 1, dkLen });
clean(B, V, tmp);
return res;
}
/**
* Scrypt KDF from RFC 7914. See {@link ScryptOpts}.
* @param password - password or key material to derive from;
* JS string inputs are UTF-8 encoded first
* @param salt - unique salt bytes or string; JS string inputs are UTF-8 encoded first
* @param opts - Scrypt cost and memory parameters. `dkLen`, if provided,
* must be `>= 1` per RFC 7914 §2. See {@link ScryptOpts}.
* @returns Derived key bytes.
* @throws If the Scrypt cost, memory, or callback options are invalid. {@link Error}
* @example
* Derive a key with scrypt.
* ```ts
* scrypt('password', 'salt', { N: 2**18, r: 8, p: 1, dkLen: 32 });
* ```
*/
export function scrypt(
password: TArg<KDFInput>,
salt: TArg<KDFInput>,
opts: TArg<ScryptOpts>
): TRet<Uint8Array> {
const { N, r, p, dkLen, blockSize32, V, B32, B, tmp, blockMixCb } = scryptInit(
password,
salt,
opts
);
swap32IfBE(B32);
for (let pi = 0; pi < p; pi++) {
const Pi = blockSize32 * pi;
for (let i = 0; i < blockSize32; i++) V[i] = B32[Pi + i]; // V[0] = B[i]
for (let i = 0, pos = 0; i < N - 1; i++) {
BlockMix(V, pos, V, (pos += blockSize32), r); // V[i] = BlockMix(V[i-1]);
blockMixCb();
}
BlockMix(V, (N - 1) * blockSize32, B32, Pi, r); // Process last element
blockMixCb();
for (let i = 0; i < N; i++) {
// First u32 of the last 64-byte block (u32 is LE)
// RFC 7914 Integerify(X) uses the whole last 64-byte block, but mod N
// only depends on the low word here because N is a power of two and
// this implementation caps N at 2^32.
// & (N - 1) is % N as N is a power of 2, N & (N - 1) = 0 is checked
// above; >>> 0 for unsigned, input fits in u32.
const j = (B32[Pi + blockSize32 - 16] & (N - 1)) >>> 0; // j = Integrify(X) % iterations
// tmp = B ^ V[j]
for (let k = 0; k < blockSize32; k++) tmp[k] = B32[Pi + k] ^ V[j * blockSize32 + k];
BlockMix(tmp, 0, B32, Pi, r); // B = BlockMix(B ^ V[j])
blockMixCb();
}
}
swap32IfBE(B32);
return scryptOutput(password, dkLen, B, V, tmp);
}
/**
* Scrypt KDF from RFC 7914. Async version. See {@link ScryptOpts}.
* @param password - password or key material to derive from;
* JS string inputs are UTF-8 encoded first
* @param salt - unique salt bytes or string; JS string inputs are UTF-8 encoded first
* @param opts - Scrypt cost and memory parameters. `dkLen`, if provided,
* must be `>= 1` per RFC 7914 §2. `asyncTick` is only a local
* scheduler-yield control for this JS wrapper, not part of RFC 7914.
* See {@link ScryptOpts}.
* @returns Promise resolving to derived key bytes.
* @throws If the Scrypt cost, memory, or callback options are invalid. {@link Error}
* @example
* Derive a key with scrypt asynchronously.
* ```ts
* await scryptAsync('password', 'salt', { N: 2**18, r: 8, p: 1, dkLen: 32 });
* ```
*/
export async function scryptAsync(
password: TArg<KDFInput>,
salt: TArg<KDFInput>,
opts: TArg<ScryptOpts>
): Promise<TRet<Uint8Array>> {
const { N, r, p, dkLen, blockSize32, V, B32, B, tmp, blockMixCb, asyncTick } = scryptInit(
password,
salt,
opts
);
swap32IfBE(B32);
for (let pi = 0; pi < p; pi++) {
const Pi = blockSize32 * pi;
for (let i = 0; i < blockSize32; i++) V[i] = B32[Pi + i]; // V[0] = B[i]
let pos = 0;
await asyncLoop(N - 1, asyncTick, () => {
BlockMix(V, pos, V, (pos += blockSize32), r); // V[i] = BlockMix(V[i-1]);
blockMixCb();
});
BlockMix(V, (N - 1) * blockSize32, B32, Pi, r); // Process last element
blockMixCb();
await asyncLoop(N, asyncTick, () => {
// First u32 of the last 64-byte block (u32 is LE)
// RFC 7914 Integerify(X) uses the whole last 64-byte block, but mod N
// only depends on the low word here because N is a power of two and
// this implementation caps N at 2^32.
// & (N - 1) is % N as N is a power of 2, N & (N - 1) = 0 is checked
// above; >>> 0 for unsigned, input fits in u32.
const j = (B32[Pi + blockSize32 - 16] & (N - 1)) >>> 0; // j = Integrify(X) % iterations
// tmp = B ^ V[j]
for (let k = 0; k < blockSize32; k++) tmp[k] = B32[Pi + k] ^ V[j * blockSize32 + k];
BlockMix(tmp, 0, B32, Pi, r); // B = BlockMix(B ^ V[j])
blockMixCb();
});
}
swap32IfBE(B32);
return scryptOutput(password, dkLen, B, V, tmp);
}

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electron/node_modules/@noble/hashes/src/sha2.ts generated vendored Normal file
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/**
* SHA2 hash function. A.k.a. sha256, sha384, sha512, sha512_224, sha512_256.
* SHA256 is the fastest hash implementable in JS, even faster than Blake3.
* Check out {@link https://www.rfc-editor.org/rfc/rfc4634 | RFC 4634} and
* {@link https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf | FIPS 180-4}.
* @module
*/
import { Chi, HashMD, Maj, SHA224_IV, SHA256_IV, SHA384_IV, SHA512_IV } from './_md.ts';
import * as u64 from './_u64.ts';
import { type CHash, clean, createHasher, oidNist, rotr, type TRet } from './utils.ts';
/**
* SHA-224 / SHA-256 round constants from RFC 6234 §5.1: the first 32 bits
* of the cube roots of the first 64 primes (2..311).
*/
// prettier-ignore
const SHA256_K = /* @__PURE__ */ Uint32Array.from([
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
]);
/** Reusable SHA-224 / SHA-256 message schedule buffer `W_t` from RFC 6234 §6.2 step 1. */
const SHA256_W = /* @__PURE__ */ new Uint32Array(64);
/** Internal SHA-224 / SHA-256 compression engine from RFC 6234 §6.2. */
abstract class SHA2_32B<T extends SHA2_32B<T>> extends HashMD<T> {
// We cannot use array here since array allows indexing by variable
// which means optimizer/compiler cannot use registers.
protected abstract A: number;
protected abstract B: number;
protected abstract C: number;
protected abstract D: number;
protected abstract E: number;
protected abstract F: number;
protected abstract G: number;
protected abstract H: number;
constructor(outputLen: number) {
super(64, outputLen, 8, false);
}
protected get(): [number, number, number, number, number, number, number, number] {
const { A, B, C, D, E, F, G, H } = this;
return [A, B, C, D, E, F, G, H];
}
// prettier-ignore
protected set(
A: number, B: number, C: number, D: number, E: number, F: number, G: number, H: number
): void {
this.A = A | 0;
this.B = B | 0;
this.C = C | 0;
this.D = D | 0;
this.E = E | 0;
this.F = F | 0;
this.G = G | 0;
this.H = H | 0;
}
protected process(view: DataView, offset: number): void {
// Extend the first 16 words into the remaining 48 words w[16..63] of the message schedule array
for (let i = 0; i < 16; i++, offset += 4) SHA256_W[i] = view.getUint32(offset, false);
for (let i = 16; i < 64; i++) {
const W15 = SHA256_W[i - 15];
const W2 = SHA256_W[i - 2];
const s0 = rotr(W15, 7) ^ rotr(W15, 18) ^ (W15 >>> 3);
const s1 = rotr(W2, 17) ^ rotr(W2, 19) ^ (W2 >>> 10);
SHA256_W[i] = (s1 + SHA256_W[i - 7] + s0 + SHA256_W[i - 16]) | 0;
}
// Compression function main loop, 64 rounds
let { A, B, C, D, E, F, G, H } = this;
for (let i = 0; i < 64; i++) {
const sigma1 = rotr(E, 6) ^ rotr(E, 11) ^ rotr(E, 25);
const T1 = (H + sigma1 + Chi(E, F, G) + SHA256_K[i] + SHA256_W[i]) | 0;
const sigma0 = rotr(A, 2) ^ rotr(A, 13) ^ rotr(A, 22);
const T2 = (sigma0 + Maj(A, B, C)) | 0;
H = G;
G = F;
F = E;
E = (D + T1) | 0;
D = C;
C = B;
B = A;
A = (T1 + T2) | 0;
}
// Add the compressed chunk to the current hash value
A = (A + this.A) | 0;
B = (B + this.B) | 0;
C = (C + this.C) | 0;
D = (D + this.D) | 0;
E = (E + this.E) | 0;
F = (F + this.F) | 0;
G = (G + this.G) | 0;
H = (H + this.H) | 0;
this.set(A, B, C, D, E, F, G, H);
}
protected roundClean(): void {
clean(SHA256_W);
}
destroy(): void {
// HashMD callers route post-destroy usability through `destroyed`; zeroizing alone still leaves
// update()/digest() callable on reused instances.
this.destroyed = true;
this.set(0, 0, 0, 0, 0, 0, 0, 0);
clean(this.buffer);
}
}
/** Internal SHA-256 hash class grounded in RFC 6234 §6.2. */
export class _SHA256 extends SHA2_32B<_SHA256> {
// We cannot use array here since array allows indexing by variable
// which means optimizer/compiler cannot use registers.
protected A: number = SHA256_IV[0] | 0;
protected B: number = SHA256_IV[1] | 0;
protected C: number = SHA256_IV[2] | 0;
protected D: number = SHA256_IV[3] | 0;
protected E: number = SHA256_IV[4] | 0;
protected F: number = SHA256_IV[5] | 0;
protected G: number = SHA256_IV[6] | 0;
protected H: number = SHA256_IV[7] | 0;
constructor() {
super(32);
}
}
/** Internal SHA-224 hash class grounded in RFC 6234 §6.2 and §8.5. */
export class _SHA224 extends SHA2_32B<_SHA224> {
protected A: number = SHA224_IV[0] | 0;
protected B: number = SHA224_IV[1] | 0;
protected C: number = SHA224_IV[2] | 0;
protected D: number = SHA224_IV[3] | 0;
protected E: number = SHA224_IV[4] | 0;
protected F: number = SHA224_IV[5] | 0;
protected G: number = SHA224_IV[6] | 0;
protected H: number = SHA224_IV[7] | 0;
constructor() {
super(28);
}
}
// SHA2-512 is slower than sha256 in js because u64 operations are slow.
// SHA-384 / SHA-512 round constants from RFC 6234 §5.2:
// 80 full 64-bit words split into high/low halves.
// prettier-ignore
const K512 = /* @__PURE__ */ (() => u64.split([
'0x428a2f98d728ae22', '0x7137449123ef65cd', '0xb5c0fbcfec4d3b2f', '0xe9b5dba58189dbbc',
'0x3956c25bf348b538', '0x59f111f1b605d019', '0x923f82a4af194f9b', '0xab1c5ed5da6d8118',
'0xd807aa98a3030242', '0x12835b0145706fbe', '0x243185be4ee4b28c', '0x550c7dc3d5ffb4e2',
'0x72be5d74f27b896f', '0x80deb1fe3b1696b1', '0x9bdc06a725c71235', '0xc19bf174cf692694',
'0xe49b69c19ef14ad2', '0xefbe4786384f25e3', '0x0fc19dc68b8cd5b5', '0x240ca1cc77ac9c65',
'0x2de92c6f592b0275', '0x4a7484aa6ea6e483', '0x5cb0a9dcbd41fbd4', '0x76f988da831153b5',
'0x983e5152ee66dfab', '0xa831c66d2db43210', '0xb00327c898fb213f', '0xbf597fc7beef0ee4',
'0xc6e00bf33da88fc2', '0xd5a79147930aa725', '0x06ca6351e003826f', '0x142929670a0e6e70',
'0x27b70a8546d22ffc', '0x2e1b21385c26c926', '0x4d2c6dfc5ac42aed', '0x53380d139d95b3df',
'0x650a73548baf63de', '0x766a0abb3c77b2a8', '0x81c2c92e47edaee6', '0x92722c851482353b',
'0xa2bfe8a14cf10364', '0xa81a664bbc423001', '0xc24b8b70d0f89791', '0xc76c51a30654be30',
'0xd192e819d6ef5218', '0xd69906245565a910', '0xf40e35855771202a', '0x106aa07032bbd1b8',
'0x19a4c116b8d2d0c8', '0x1e376c085141ab53', '0x2748774cdf8eeb99', '0x34b0bcb5e19b48a8',
'0x391c0cb3c5c95a63', '0x4ed8aa4ae3418acb', '0x5b9cca4f7763e373', '0x682e6ff3d6b2b8a3',
'0x748f82ee5defb2fc', '0x78a5636f43172f60', '0x84c87814a1f0ab72', '0x8cc702081a6439ec',
'0x90befffa23631e28', '0xa4506cebde82bde9', '0xbef9a3f7b2c67915', '0xc67178f2e372532b',
'0xca273eceea26619c', '0xd186b8c721c0c207', '0xeada7dd6cde0eb1e', '0xf57d4f7fee6ed178',
'0x06f067aa72176fba', '0x0a637dc5a2c898a6', '0x113f9804bef90dae', '0x1b710b35131c471b',
'0x28db77f523047d84', '0x32caab7b40c72493', '0x3c9ebe0a15c9bebc', '0x431d67c49c100d4c',
'0x4cc5d4becb3e42b6', '0x597f299cfc657e2a', '0x5fcb6fab3ad6faec', '0x6c44198c4a475817'
].map(n => BigInt(n))))();
const SHA512_Kh = /* @__PURE__ */ (() => K512[0])();
const SHA512_Kl = /* @__PURE__ */ (() => K512[1])();
// Reusable high-half schedule buffer for the RFC 6234 §6.4 64-bit `W_t` words.
const SHA512_W_H = /* @__PURE__ */ new Uint32Array(80);
// Reusable low-half schedule buffer for the RFC 6234 §6.4 64-bit `W_t` words.
const SHA512_W_L = /* @__PURE__ */ new Uint32Array(80);
/** Internal SHA-384 / SHA-512 compression engine from RFC 6234 §6.4. */
abstract class SHA2_64B<T extends SHA2_64B<T>> extends HashMD<T> {
// We cannot use array here since array allows indexing by variable
// which means optimizer/compiler cannot use registers.
// h -- high 32 bits, l -- low 32 bits
protected abstract Ah: number;
protected abstract Al: number;
protected abstract Bh: number;
protected abstract Bl: number;
protected abstract Ch: number;
protected abstract Cl: number;
protected abstract Dh: number;
protected abstract Dl: number;
protected abstract Eh: number;
protected abstract El: number;
protected abstract Fh: number;
protected abstract Fl: number;
protected abstract Gh: number;
protected abstract Gl: number;
protected abstract Hh: number;
protected abstract Hl: number;
constructor(outputLen: number) {
super(128, outputLen, 16, false);
}
// prettier-ignore
protected get(): [
number, number, number, number, number, number, number, number,
number, number, number, number, number, number, number, number
] {
const { Ah, Al, Bh, Bl, Ch, Cl, Dh, Dl, Eh, El, Fh, Fl, Gh, Gl, Hh, Hl } = this;
return [Ah, Al, Bh, Bl, Ch, Cl, Dh, Dl, Eh, El, Fh, Fl, Gh, Gl, Hh, Hl];
}
// prettier-ignore
protected set(
Ah: number, Al: number, Bh: number, Bl: number, Ch: number, Cl: number, Dh: number, Dl: number,
Eh: number, El: number, Fh: number, Fl: number, Gh: number, Gl: number, Hh: number, Hl: number
): void {
this.Ah = Ah | 0;
this.Al = Al | 0;
this.Bh = Bh | 0;
this.Bl = Bl | 0;
this.Ch = Ch | 0;
this.Cl = Cl | 0;
this.Dh = Dh | 0;
this.Dl = Dl | 0;
this.Eh = Eh | 0;
this.El = El | 0;
this.Fh = Fh | 0;
this.Fl = Fl | 0;
this.Gh = Gh | 0;
this.Gl = Gl | 0;
this.Hh = Hh | 0;
this.Hl = Hl | 0;
}
protected process(view: DataView, offset: number): void {
// Extend the first 16 words into the remaining 64 words w[16..79] of the message schedule array
for (let i = 0; i < 16; i++, offset += 4) {
SHA512_W_H[i] = view.getUint32(offset);
SHA512_W_L[i] = view.getUint32((offset += 4));
}
for (let i = 16; i < 80; i++) {
// s0 := (w[i-15] rightrotate 1) xor (w[i-15] rightrotate 8) xor (w[i-15] rightshift 7)
const W15h = SHA512_W_H[i - 15] | 0;
const W15l = SHA512_W_L[i - 15] | 0;
const s0h = u64.rotrSH(W15h, W15l, 1) ^ u64.rotrSH(W15h, W15l, 8) ^ u64.shrSH(W15h, W15l, 7);
const s0l = u64.rotrSL(W15h, W15l, 1) ^ u64.rotrSL(W15h, W15l, 8) ^ u64.shrSL(W15h, W15l, 7);
// s1 := (w[i-2] rightrotate 19) xor (w[i-2] rightrotate 61) xor (w[i-2] rightshift 6)
const W2h = SHA512_W_H[i - 2] | 0;
const W2l = SHA512_W_L[i - 2] | 0;
const s1h = u64.rotrSH(W2h, W2l, 19) ^ u64.rotrBH(W2h, W2l, 61) ^ u64.shrSH(W2h, W2l, 6);
const s1l = u64.rotrSL(W2h, W2l, 19) ^ u64.rotrBL(W2h, W2l, 61) ^ u64.shrSL(W2h, W2l, 6);
// SHA512_W[i] = s0 + s1 + SHA512_W[i - 7] + SHA512_W[i - 16];
const SUMl = u64.add4L(s0l, s1l, SHA512_W_L[i - 7], SHA512_W_L[i - 16]);
const SUMh = u64.add4H(SUMl, s0h, s1h, SHA512_W_H[i - 7], SHA512_W_H[i - 16]);
SHA512_W_H[i] = SUMh | 0;
SHA512_W_L[i] = SUMl | 0;
}
let { Ah, Al, Bh, Bl, Ch, Cl, Dh, Dl, Eh, El, Fh, Fl, Gh, Gl, Hh, Hl } = this;
// Compression function main loop, 80 rounds
for (let i = 0; i < 80; i++) {
// S1 := (e rightrotate 14) xor (e rightrotate 18) xor (e rightrotate 41)
const sigma1h = u64.rotrSH(Eh, El, 14) ^ u64.rotrSH(Eh, El, 18) ^ u64.rotrBH(Eh, El, 41);
const sigma1l = u64.rotrSL(Eh, El, 14) ^ u64.rotrSL(Eh, El, 18) ^ u64.rotrBL(Eh, El, 41);
//const T1 = (H + sigma1 + Chi(E, F, G) + SHA256_K[i] + SHA256_W[i]) | 0;
const CHIh = (Eh & Fh) ^ (~Eh & Gh);
const CHIl = (El & Fl) ^ (~El & Gl);
// T1 = H + sigma1 + Chi(E, F, G) + SHA512_K[i] + SHA512_W[i]
// prettier-ignore
const T1ll = u64.add5L(Hl, sigma1l, CHIl, SHA512_Kl[i], SHA512_W_L[i]);
const T1h = u64.add5H(T1ll, Hh, sigma1h, CHIh, SHA512_Kh[i], SHA512_W_H[i]);
const T1l = T1ll | 0;
// S0 := (a rightrotate 28) xor (a rightrotate 34) xor (a rightrotate 39)
const sigma0h = u64.rotrSH(Ah, Al, 28) ^ u64.rotrBH(Ah, Al, 34) ^ u64.rotrBH(Ah, Al, 39);
const sigma0l = u64.rotrSL(Ah, Al, 28) ^ u64.rotrBL(Ah, Al, 34) ^ u64.rotrBL(Ah, Al, 39);
const MAJh = (Ah & Bh) ^ (Ah & Ch) ^ (Bh & Ch);
const MAJl = (Al & Bl) ^ (Al & Cl) ^ (Bl & Cl);
Hh = Gh | 0;
Hl = Gl | 0;
Gh = Fh | 0;
Gl = Fl | 0;
Fh = Eh | 0;
Fl = El | 0;
({ h: Eh, l: El } = u64.add(Dh | 0, Dl | 0, T1h | 0, T1l | 0));
Dh = Ch | 0;
Dl = Cl | 0;
Ch = Bh | 0;
Cl = Bl | 0;
Bh = Ah | 0;
Bl = Al | 0;
const All = u64.add3L(T1l, sigma0l, MAJl);
Ah = u64.add3H(All, T1h, sigma0h, MAJh);
Al = All | 0;
}
// Add the compressed chunk to the current hash value
({ h: Ah, l: Al } = u64.add(this.Ah | 0, this.Al | 0, Ah | 0, Al | 0));
({ h: Bh, l: Bl } = u64.add(this.Bh | 0, this.Bl | 0, Bh | 0, Bl | 0));
({ h: Ch, l: Cl } = u64.add(this.Ch | 0, this.Cl | 0, Ch | 0, Cl | 0));
({ h: Dh, l: Dl } = u64.add(this.Dh | 0, this.Dl | 0, Dh | 0, Dl | 0));
({ h: Eh, l: El } = u64.add(this.Eh | 0, this.El | 0, Eh | 0, El | 0));
({ h: Fh, l: Fl } = u64.add(this.Fh | 0, this.Fl | 0, Fh | 0, Fl | 0));
({ h: Gh, l: Gl } = u64.add(this.Gh | 0, this.Gl | 0, Gh | 0, Gl | 0));
({ h: Hh, l: Hl } = u64.add(this.Hh | 0, this.Hl | 0, Hh | 0, Hl | 0));
this.set(Ah, Al, Bh, Bl, Ch, Cl, Dh, Dl, Eh, El, Fh, Fl, Gh, Gl, Hh, Hl);
}
protected roundClean(): void {
clean(SHA512_W_H, SHA512_W_L);
}
destroy(): void {
// HashMD callers route post-destroy usability through `destroyed`; zeroizing alone still leaves
// update()/digest() callable on reused instances.
this.destroyed = true;
clean(this.buffer);
this.set(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
}
}
/** Internal SHA-512 hash class grounded in RFC 6234 §6.3 and §6.4. */
export class _SHA512 extends SHA2_64B<_SHA512> {
protected Ah: number = SHA512_IV[0] | 0;
protected Al: number = SHA512_IV[1] | 0;
protected Bh: number = SHA512_IV[2] | 0;
protected Bl: number = SHA512_IV[3] | 0;
protected Ch: number = SHA512_IV[4] | 0;
protected Cl: number = SHA512_IV[5] | 0;
protected Dh: number = SHA512_IV[6] | 0;
protected Dl: number = SHA512_IV[7] | 0;
protected Eh: number = SHA512_IV[8] | 0;
protected El: number = SHA512_IV[9] | 0;
protected Fh: number = SHA512_IV[10] | 0;
protected Fl: number = SHA512_IV[11] | 0;
protected Gh: number = SHA512_IV[12] | 0;
protected Gl: number = SHA512_IV[13] | 0;
protected Hh: number = SHA512_IV[14] | 0;
protected Hl: number = SHA512_IV[15] | 0;
constructor() {
super(64);
}
}
/** Internal SHA-384 hash class grounded in RFC 6234 §6.3 and §6.4. */
export class _SHA384 extends SHA2_64B<_SHA384> {
protected Ah: number = SHA384_IV[0] | 0;
protected Al: number = SHA384_IV[1] | 0;
protected Bh: number = SHA384_IV[2] | 0;
protected Bl: number = SHA384_IV[3] | 0;
protected Ch: number = SHA384_IV[4] | 0;
protected Cl: number = SHA384_IV[5] | 0;
protected Dh: number = SHA384_IV[6] | 0;
protected Dl: number = SHA384_IV[7] | 0;
protected Eh: number = SHA384_IV[8] | 0;
protected El: number = SHA384_IV[9] | 0;
protected Fh: number = SHA384_IV[10] | 0;
protected Fl: number = SHA384_IV[11] | 0;
protected Gh: number = SHA384_IV[12] | 0;
protected Gl: number = SHA384_IV[13] | 0;
protected Hh: number = SHA384_IV[14] | 0;
protected Hl: number = SHA384_IV[15] | 0;
constructor() {
super(48);
}
}
/**
* Truncated SHA512/256 and SHA512/224.
* SHA512_IV is XORed with 0xa5a5a5a5a5a5a5a5, then used as "intermediary" IV of SHA512/t.
* Then t hashes string to produce result IV.
* See the repo-side derivation recipe in `test/misc/sha2-gen-iv.js`.
* These IV literals are checked against that script rather than a dedicated
* local RFC section.
*/
/** SHA-512/224 IV derived by the SHA-512/t recipe in `test/misc/sha2-gen-iv.js` and
* stored as sixteen big-endian 32-bit halves. */
const T224_IV = /* @__PURE__ */ Uint32Array.from([
0x8c3d37c8, 0x19544da2, 0x73e19966, 0x89dcd4d6, 0x1dfab7ae, 0x32ff9c82, 0x679dd514, 0x582f9fcf,
0x0f6d2b69, 0x7bd44da8, 0x77e36f73, 0x04c48942, 0x3f9d85a8, 0x6a1d36c8, 0x1112e6ad, 0x91d692a1,
]);
/** SHA-512/256 IV derived by the SHA-512/t recipe in `test/misc/sha2-gen-iv.js` and
* stored as sixteen big-endian 32-bit halves. */
const T256_IV = /* @__PURE__ */ Uint32Array.from([
0x22312194, 0xfc2bf72c, 0x9f555fa3, 0xc84c64c2, 0x2393b86b, 0x6f53b151, 0x96387719, 0x5940eabd,
0x96283ee2, 0xa88effe3, 0xbe5e1e25, 0x53863992, 0x2b0199fc, 0x2c85b8aa, 0x0eb72ddc, 0x81c52ca2,
]);
/** Internal SHA-512/224 hash class using the derived `T224_IV` and the shared
* RFC 6234 §6.4 compression engine. */
export class _SHA512_224 extends SHA2_64B<_SHA512_224> {
protected Ah: number = T224_IV[0] | 0;
protected Al: number = T224_IV[1] | 0;
protected Bh: number = T224_IV[2] | 0;
protected Bl: number = T224_IV[3] | 0;
protected Ch: number = T224_IV[4] | 0;
protected Cl: number = T224_IV[5] | 0;
protected Dh: number = T224_IV[6] | 0;
protected Dl: number = T224_IV[7] | 0;
protected Eh: number = T224_IV[8] | 0;
protected El: number = T224_IV[9] | 0;
protected Fh: number = T224_IV[10] | 0;
protected Fl: number = T224_IV[11] | 0;
protected Gh: number = T224_IV[12] | 0;
protected Gl: number = T224_IV[13] | 0;
protected Hh: number = T224_IV[14] | 0;
protected Hl: number = T224_IV[15] | 0;
constructor() {
super(28);
}
}
/** Internal SHA-512/256 hash class using the derived `T256_IV` and the shared
* RFC 6234 §6.4 compression engine. */
export class _SHA512_256 extends SHA2_64B<_SHA512_256> {
protected Ah: number = T256_IV[0] | 0;
protected Al: number = T256_IV[1] | 0;
protected Bh: number = T256_IV[2] | 0;
protected Bl: number = T256_IV[3] | 0;
protected Ch: number = T256_IV[4] | 0;
protected Cl: number = T256_IV[5] | 0;
protected Dh: number = T256_IV[6] | 0;
protected Dl: number = T256_IV[7] | 0;
protected Eh: number = T256_IV[8] | 0;
protected El: number = T256_IV[9] | 0;
protected Fh: number = T256_IV[10] | 0;
protected Fl: number = T256_IV[11] | 0;
protected Gh: number = T256_IV[12] | 0;
protected Gl: number = T256_IV[13] | 0;
protected Hh: number = T256_IV[14] | 0;
protected Hl: number = T256_IV[15] | 0;
constructor() {
super(32);
}
}
/**
* SHA2-256 hash function from RFC 4634. In JS it's the fastest: even faster than Blake3. Some info:
*
* - Trying 2^128 hashes would get 50% chance of collision, using birthday attack.
* - BTC network is doing 2^70 hashes/sec (2^95 hashes/year) as per 2025.
* - Each sha256 hash is executing 2^18 bit operations.
* - Good 2024 ASICs can do 200Th/sec with 3500 watts of power, corresponding to 2^36 hashes/joule.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-256.
* ```ts
* sha256(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha256: TRet<CHash<_SHA256>> = /* @__PURE__ */ createHasher(
() => new _SHA256(),
/* @__PURE__ */ oidNist(0x01)
);
/**
* SHA2-224 hash function from RFC 4634.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-224.
* ```ts
* sha224(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha224: TRet<CHash<_SHA224>> = /* @__PURE__ */ createHasher(
() => new _SHA224(),
/* @__PURE__ */ oidNist(0x04)
);
/**
* SHA2-512 hash function from RFC 4634.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-512.
* ```ts
* sha512(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha512: TRet<CHash<_SHA512>> = /* @__PURE__ */ createHasher(
() => new _SHA512(),
/* @__PURE__ */ oidNist(0x03)
);
/**
* SHA2-384 hash function from RFC 4634.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-384.
* ```ts
* sha384(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha384: TRet<CHash<_SHA384>> = /* @__PURE__ */ createHasher(
() => new _SHA384(),
/* @__PURE__ */ oidNist(0x02)
);
/**
* SHA2-512/256 "truncated" hash function, with improved resistance to length extension attacks.
* See the paper on {@link https://eprint.iacr.org/2010/548.pdf | truncated SHA512}.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-512/256.
* ```ts
* sha512_256(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha512_256: TRet<CHash<_SHA512_256>> = /* @__PURE__ */ createHasher(
() => new _SHA512_256(),
/* @__PURE__ */ oidNist(0x06)
);
/**
* SHA2-512/224 "truncated" hash function, with improved resistance to length extension attacks.
* See the paper on {@link https://eprint.iacr.org/2010/548.pdf | truncated SHA512}.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA2-512/224.
* ```ts
* sha512_224(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha512_224: TRet<CHash<_SHA512_224>> = /* @__PURE__ */ createHasher(
() => new _SHA512_224(),
/* @__PURE__ */ oidNist(0x05)
);

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@ -0,0 +1,983 @@
/**
* SHA3 (keccak) addons.
*
* * cSHAKE, KMAC, TupleHash, ParallelHash + XOF variants from
* {@link https://csrc.nist.gov/pubs/sp/800/185/final | NIST SP 800-185}
* * KangarooTwelve 🦘 and TurboSHAKE - reduced-round keccak from
* {@link https://datatracker.ietf.org/doc/rfc9861/ | RFC 9861}
* * KeccakPRG: Pseudo-random generator based on Keccak
* ({@link https://keccak.team/files/CSF-0.1.pdf | pdf})
* @module
*/
import { Keccak, type ShakeOpts } from './sha3.ts';
import {
abytes,
aexists,
anumber,
type CHash,
type CHashXOF,
clean,
copyBytes,
createHasher,
type Hash,
type HashXOF,
type KDFInput,
kdfInputToBytes,
type PRG,
type TArg,
type TRet,
u32,
} from './utils.ts';
// cSHAKE && KMAC (NIST SP800-185)
const _8n = /* @__PURE__ */ BigInt(8);
const _ffn = /* @__PURE__ */ BigInt(0xff);
// It is safe to use bigints here, since they used only for length encoding (not actual data).
// We use bigints in sha256 for lengths too.
// Callers are still expected to supply SP 800-185-valid lengths
// (`0 <= x < 2^2040`); this helper does not enforce that bound.
function leftEncode(n: number | bigint): TRet<Uint8Array> {
n = BigInt(n);
const res = [Number(n & _ffn)];
n >>= _8n;
for (; n > 0; n >>= _8n) res.unshift(Number(n & _ffn));
res.unshift(res.length);
return new Uint8Array(res) as TRet<Uint8Array>;
}
// Same caller contract as `leftEncode(...)`: lengths must already satisfy SP 800-185 §2.3.1.
function rightEncode(n: number | bigint): TRet<Uint8Array> {
n = BigInt(n);
const res = [Number(n & _ffn)];
n >>= _8n;
for (; n > 0; n >>= _8n) res.unshift(Number(n & _ffn));
res.push(res.length);
return new Uint8Array(res) as TRet<Uint8Array>;
}
// `dkLen` validation is deferred to the downstream Keccak constructor.
function chooseLen(opts: ShakeOpts, outputLen: number): number {
return opts.dkLen === undefined ? outputLen : opts.dkLen;
}
const abytesOrZero = (buf?: TArg<Uint8Array>, title = '') => {
if (buf === undefined) return EMPTY_BUFFER;
abytes(buf, undefined, title);
return buf;
};
// NOTE: second modulo is necessary since we don't need to add padding if the
// current element takes a whole block.
// Callers only pass the fixed positive Keccak rates here (`168` or `136`);
// `block <= 0` is not validated locally.
const getPadding = (len: number, block: number) => new Uint8Array((block - (len % block)) % block);
/** Options for cSHAKE and related SP 800-185 functions. */
export type cShakeOpts = ShakeOpts & {
/** Optional personalization string mixed into domain separation. */
personalization?: Uint8Array;
/**
* Optional NIST function-name string used for domain separation.
* SP 800-185 reserves this for standardized function names; applications
* should generally stick to `personalization`.
*/
NISTfn?: KDFInput;
};
// Personalization
function cshakePers(hash: TArg<Keccak>, opts: TArg<cShakeOpts> = {}): TRet<Keccak> {
const h = hash as unknown as Keccak;
if (!opts || (opts.personalization === undefined && opts.NISTfn === undefined))
return h as TRet<Keccak>;
// Encode and pad inplace to avoid unneccesary memory copies/slices so we
// don't need to zero them later.
// bytepad(encode_string(N) || encode_string(S), rate), where `rate` is the
// current cSHAKE/KMAC/TupleHash/ParallelHash block length.
const blockLenBytes = leftEncode(h.blockLen);
const fn = opts.NISTfn === undefined ? EMPTY_BUFFER : kdfInputToBytes(opts.NISTfn);
const fnLen = leftEncode(_8n * BigInt(fn.length)); // length in bits
const pers = abytesOrZero(opts.personalization, 'personalization');
const persLen = leftEncode(_8n * BigInt(pers.length)); // length in bits
if (!fn.length && !pers.length) return h as TRet<Keccak>;
// SP 800-185 cSHAKE appends `00` instead of SHAKE's `1111`; in this Keccak implementation
// that changes the delimited suffix byte from `0x1f` to `0x04` once N or S is non-empty.
h.suffix = 0x04;
h.update(blockLenBytes).update(fnLen).update(fn).update(persLen).update(pers);
let totalLen = blockLenBytes.length + fnLen.length + fn.length + persLen.length + pers.length;
h.update(getPadding(totalLen, h.blockLen));
return h as TRet<Keccak>;
}
const gencShake = (
suffix: number,
blockLen: number,
outputLen: number
): TRet<CHashXOF<Keccak, cShakeOpts>> =>
createHasher<Keccak, cShakeOpts>(
(opts: TArg<cShakeOpts> = {}) =>
cshakePers(
new Keccak(blockLen, suffix, chooseLen(opts, outputLen), true) as unknown as TArg<Keccak>,
opts
) as Keccak
);
/** TupleHash callable interface. */
export type ITupleHash = {
/**
* Hashes an ordered tuple of byte arrays.
* @param messages - Ordered byte-array tuple to hash.
* @param opts - TupleHash output and personalization options. See {@link cShakeOpts}.
* @returns Digest bytes.
*/
(messages: TArg<Uint8Array[]>, opts?: TArg<cShakeOpts>): TRet<Uint8Array>;
/**
* Creates an incremental TupleHash state.
* @param opts - TupleHash output and personalization options. See {@link cShakeOpts}.
* @returns Stateful TupleHash instance.
*/
create(opts?: cShakeOpts): _TupleHash;
};
/**
* 128-bit NIST cSHAKE XOF.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and NIST function-name
* settings. When both `NISTfn` and `personalization` are empty,
* SP 800-185 defines this as plain SHAKE128. Defaults to 16 output bytes
* when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with cSHAKE128.
* ```ts
* cshake128(new Uint8Array([1, 2, 3]), { dkLen: 32 });
* ```
*/
export const cshake128: TRet<CHashXOF<Keccak, cShakeOpts>> = /* @__PURE__ */ gencShake(
0x1f,
168,
16
);
/**
* 256-bit NIST cSHAKE XOF.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and NIST function-name
* settings. When both `NISTfn` and `personalization` are empty,
* SP 800-185 defines this as plain SHAKE256. Defaults to 32 output bytes
* when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with cSHAKE256.
* ```ts
* cshake256(new Uint8Array([1, 2, 3]), { dkLen: 64 });
* ```
*/
export const cshake256: TRet<CHashXOF<Keccak, cShakeOpts>> = /* @__PURE__ */ gencShake(
0x1f,
136,
32
);
/**
* Internal KMAC class.
* SP 800-185 §8.4.1 still recommends keys at least as long as the target
* security strength.
*/
export class _KMAC extends Keccak implements HashXOF<_KMAC> {
constructor(
blockLen: number,
outputLen: number,
enableXOF: boolean,
key: TArg<Uint8Array>,
opts: TArg<cShakeOpts> = {}
) {
super(blockLen, 0x1f, outputLen, enableXOF);
// Preload T = bytepad(encode_string("KMAC") || encode_string(S), rate); later updates append
// newX = bytepad(encode_string(K), rate) || X and `finish()` appends right_encode(L or 0).
cshakePers(this as unknown as TArg<Keccak>, {
NISTfn: 'KMAC',
personalization: opts.personalization,
});
abytes(key, undefined, 'key');
// 1. newX = bytepad(encode_string(K), rate) || X || right_encode(L),
// with `rate = this.blockLen`.
const blockLenBytes = leftEncode(this.blockLen);
const keyLen = leftEncode(_8n * BigInt(key.length));
this.update(blockLenBytes).update(keyLen).update(key);
const totalLen = blockLenBytes.length + keyLen.length + key.length;
this.update(getPadding(totalLen, this.blockLen));
}
protected finish(): void {
// SP 800-185 uses right_encode(L) for fixed-length KMAC and right_encode(0) for KMACXOF.
// outputLen in bits
if (!this.finished) this.update(rightEncode(this.enableXOF ? 0 : _8n * BigInt(this.outputLen)));
super.finish();
}
_cloneInto(to?: _KMAC): _KMAC {
// Create new instance without calling constructor since the key
// is already in state and we don't know it.
// Force "to" to be instance of KMAC instead of Sha3.
if (!to) {
to = Object.create(Object.getPrototypeOf(this), {}) as _KMAC;
to.state = this.state.slice();
to.blockLen = this.blockLen;
to.state32 = u32(to.state);
}
return super._cloneInto(to) as _KMAC;
}
clone(): _KMAC {
return this._cloneInto();
}
}
function genKmac(blockLen: number, outputLen: number, xof = false): TRet<IKMAC> {
// One-shot XOF wrappers still finalize via `.digest()` because `_KMAC`
// already bakes the requested output length into the state.
const kmac = (
key: TArg<Uint8Array>,
message: TArg<Uint8Array>,
opts?: TArg<cShakeOpts>
): TRet<Uint8Array> => kmac.create(key, opts).update(message).digest();
kmac.create = (key: TArg<Uint8Array>, opts: TArg<cShakeOpts> = {}) =>
new _KMAC(blockLen, chooseLen(opts, outputLen), xof, key, opts);
return kmac as TRet<IKMAC>;
}
/** KMAC callable interface. */
export type IKMAC = {
/**
* Computes a keyed KMAC digest for one message.
* @param key - Secret key bytes.
* @param message - Message bytes to authenticate.
* @param opts - KMAC output and personalization options. See {@link KangarooOpts}.
* @returns Authentication tag bytes.
*/
(key: TArg<Uint8Array>, message: TArg<Uint8Array>, opts?: TArg<KangarooOpts>): TRet<Uint8Array>;
/**
* Creates an incremental KMAC state.
* @param key - Secret key bytes.
* @param opts - KMAC output and personalization options. See {@link cShakeOpts}.
* @returns Stateful KMAC instance.
*/
create(key: TArg<Uint8Array>, opts?: TArg<cShakeOpts>): _KMAC;
};
/**
* 128-bit Keccak MAC.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param opts - Optional output and personalization settings. Defaults to
* 16 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with KMAC128.
* ```ts
* kmac128(new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]));
* ```
*/
export const kmac128: TRet<IKMAC> = /* @__PURE__ */ genKmac(168, 16);
/**
* 256-bit Keccak MAC.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with KMAC256.
* ```ts
* kmac256(new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]));
* ```
*/
export const kmac256: TRet<IKMAC> = /* @__PURE__ */ genKmac(136, 32);
/**
* 128-bit Keccak-MAC XOF.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param opts - Optional output and personalization settings. Defaults to
* 16 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with KMAC128 XOF output.
* ```ts
* kmac128xof(new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]), { dkLen: 32 });
* ```
*/
export const kmac128xof: TRet<IKMAC> = /* @__PURE__ */ genKmac(168, 16, true);
/**
* 256-bit Keccak-MAC XOF.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with KMAC256 XOF output.
* ```ts
* kmac256xof(new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]), { dkLen: 64 });
* ```
*/
export const kmac256xof: TRet<IKMAC> = /* @__PURE__ */ genKmac(136, 32, true);
/**
* Internal TupleHash class for byte-array tuple elements.
* This implementation relies on SP 800-185's byte-oriented encoding form
* rather than arbitrary bit strings.
*/
export class _TupleHash extends Keccak implements HashXOF<_TupleHash> {
constructor(
blockLen: number,
outputLen: number,
enableXOF: boolean,
opts: TArg<cShakeOpts> = {}
) {
super(blockLen, 0x1f, outputLen, enableXOF);
cshakePers(this as unknown as TArg<Keccak>, {
NISTfn: 'TupleHash',
personalization: opts.personalization,
});
// Change update after cshake processed
this.update = (data: TArg<Uint8Array>) => {
abytes(data);
// SP 800-185 encodes each tuple element as
// encode_string(X[i]) = left_encode(len(X[i])) || X[i].
super.update(leftEncode(_8n * BigInt(data.length)));
super.update(data);
return this;
};
}
protected finish(): void {
// SP 800-185 uses right_encode(L) for fixed-length TupleHash
// and right_encode(0) for TupleHashXOF.
if (!this.finished)
// outputLen in bits
super.update(rightEncode(this.enableXOF ? 0 : _8n * BigInt(this.outputLen)));
super.finish();
}
_cloneInto(to?: _TupleHash): _TupleHash {
to ||= new _TupleHash(this.blockLen, this.outputLen, this.enableXOF);
return super._cloneInto(to) as _TupleHash;
}
clone(): _TupleHash {
return this._cloneInto();
}
}
function genTuple(blockLen: number, outputLen: number, xof = false): TRet<ITupleHash> {
// One-shot XOF wrappers still use `.digest()` because `_TupleHash` stores
// the requested output length in the state itself.
const tuple = (messages: TArg<Uint8Array[]>, opts?: TArg<cShakeOpts>): TRet<Uint8Array> => {
const h = tuple.create(opts);
if (!Array.isArray(messages)) throw new Error('expected array of messages');
for (const msg of messages) h.update(msg);
return h.digest();
};
tuple.create = (opts: TArg<cShakeOpts> = {}) =>
new _TupleHash(blockLen, chooseLen(opts, outputLen), xof, opts);
return tuple as TRet<ITupleHash>;
}
/**
* 128-bit TupleHASH. `tuple(['ab', 'cd']) != tuple(['a', 'bcd'])`.
* @param messages - ordered byte-array tuple
* @param opts - Optional output and personalization settings. Defaults to
* 16 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a tuple of byte arrays with TupleHash128.
* ```ts
* tuplehash128([new Uint8Array([1]), new Uint8Array([2])]);
* ```
*/
export const tuplehash128: TRet<ITupleHash> = /* @__PURE__ */ genTuple(168, 16);
/**
* 256-bit TupleHASH. `tuple(['ab', 'cd']) != tuple(['a', 'bcd'])`.
* @param messages - ordered byte-array tuple
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a tuple of byte arrays with TupleHash256.
* ```ts
* tuplehash256([new Uint8Array([1]), new Uint8Array([2])]);
* ```
*/
export const tuplehash256: TRet<ITupleHash> = /* @__PURE__ */ genTuple(136, 32);
/**
* 128-bit TupleHASH XOF.
* @param messages - ordered byte-array tuple
* @param opts - Optional output and personalization settings. Defaults to
* 16 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a tuple of byte arrays with TupleHash128 XOF output.
* ```ts
* tuplehash128xof([new Uint8Array([1]), new Uint8Array([2])], { dkLen: 32 });
* ```
*/
export const tuplehash128xof: TRet<ITupleHash> = /* @__PURE__ */ genTuple(168, 16, true);
/**
* 256-bit TupleHASH XOF.
* @param messages - ordered byte-array tuple
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link cShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a tuple of byte arrays with TupleHash256 XOF output.
* ```ts
* tuplehash256xof([new Uint8Array([1]), new Uint8Array([2])], { dkLen: 64 });
* ```
*/
export const tuplehash256xof: TRet<ITupleHash> = /* @__PURE__ */ genTuple(136, 32, true);
// Same as K12/M14, but without speedup for inputs less 8kb,
// reduced number of rounds and simpler.
type ParallelOpts = KangarooOpts & { blockLen?: number };
/** Internal Parallel Keccak Hash class. */
export class _ParallelHash extends Keccak implements HashXOF<_ParallelHash> {
private leafHash?: Hash<Keccak>;
protected leafCons: () => Hash<Keccak>;
private chunkPos = 0; // Position of current block in chunk
private chunksDone = 0; // How many chunks we already have
private chunkLen: number;
constructor(
blockLen: number,
outputLen: number,
leafCons: () => Hash<Keccak>,
enableXOF: boolean,
opts: TArg<ParallelOpts> = {}
) {
super(blockLen, 0x1f, outputLen, enableXOF);
cshakePers(this as unknown as TArg<Keccak>, {
NISTfn: 'ParallelHash',
personalization: opts.personalization,
});
this.leafCons = leafCons;
let { blockLen: B = 8 } = opts;
anumber(B);
// blockLen=0 makes take=0 in update(), so pos never advances and the hash hangs.
if (B < 1) throw new Error('"blockLen" must be >= 1, got ' + B);
this.chunkLen = B;
// SP 800-185 initializes z = left_encode(B); each completed chunk appends
// one fixed-size cSHAKE leaf digest before finish() adds right_encode(n)
// and right_encode(L or 0).
super.update(leftEncode(B));
// Change update after cshake processed
this.update = (data: TArg<Uint8Array>) => {
abytes(data);
const { chunkLen, leafCons } = this;
for (let pos = 0, len = data.length; pos < len; ) {
if (this.chunkPos == chunkLen || !this.leafHash) {
if (this.leafHash) {
super.update(this.leafHash.digest());
this.chunksDone++;
}
this.leafHash = leafCons();
this.chunkPos = 0;
}
const take = Math.min(chunkLen - this.chunkPos, len - pos);
this.leafHash.update(data.subarray(pos, pos + take));
this.chunkPos += take;
pos += take;
}
return this;
};
}
protected finish(): void {
if (this.finished) return;
if (this.leafHash) {
super.update(this.leafHash.digest());
this.chunksDone++;
}
// SP 800-185 finishes ParallelHash as
// z || right_encode(n) || right_encode(L); XOF mode replaces
// right_encode(L) with right_encode(0).
super.update(rightEncode(this.chunksDone));
// outputLen in bits
super.update(rightEncode(this.enableXOF ? 0 : _8n * BigInt(this.outputLen)));
super.finish();
}
_cloneInto(to?: _ParallelHash): _ParallelHash {
to ||= new _ParallelHash(this.blockLen, this.outputLen, this.leafCons, this.enableXOF);
to.leafCons = this.leafCons;
// Reused destinations can carry a stale partial leaf
// when the source is still on the root sponge.
if (this.leafHash) to.leafHash = this.leafHash._cloneInto(to.leafHash as Keccak);
else if (to.leafHash) {
to.leafHash.destroy();
to.leafHash = undefined;
}
to.chunkPos = this.chunkPos;
to.chunkLen = this.chunkLen;
to.chunksDone = this.chunksDone;
return super._cloneInto(to) as _ParallelHash;
}
destroy(): void {
super.destroy.call(this);
if (this.leafHash) this.leafHash.destroy();
}
clone(): _ParallelHash {
return this._cloneInto();
}
}
function genPrl(
blockLen: number,
outputLen: number,
leaf: ReturnType<typeof gencShake>,
xof = false
): TRet<CHashXOF<Keccak, ParallelOpts>> {
const parallel = (message: TArg<Uint8Array>, opts?: TArg<ParallelOpts>): TRet<Uint8Array> =>
parallel.create(opts).update(message).digest();
parallel.create = (opts: TArg<ParallelOpts> = {}) =>
new _ParallelHash(
blockLen,
chooseLen(opts, outputLen),
// SP 800-185 fixes leaf digests at 256 bits for ParallelHash128 and
// 512 bits for ParallelHash256; only the final cSHAKE output uses the
// caller-selected dkLen.
() => leaf.create({ dkLen: 2 * outputLen }),
xof,
opts
);
parallel.outputLen = outputLen;
parallel.blockLen = blockLen;
parallel.canXOF = xof;
return parallel as TRet<CHashXOF<Keccak, ParallelOpts>>;
}
/**
* 128-bit ParallelHash. In JS, it is not parallel.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and chunking settings.
* Defaults to 16 output bytes when `dkLen` is omitted.
* See {@link ParallelOpts}.
* @returns Digest bytes.
* @example
* Hash a message with ParallelHash128.
* ```ts
* parallelhash128(new Uint8Array([1, 2, 3]));
* ```
*/
export const parallelhash128: TRet<CHash<Keccak, ParallelOpts>> = /* @__PURE__ */ genPrl(
168,
16,
cshake128
);
/**
* 256-bit ParallelHash. In JS, it is not parallel.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and chunking settings.
* Defaults to 32 output bytes when `dkLen` is omitted.
* See {@link ParallelOpts}.
* @returns Digest bytes.
* @example
* Hash a message with ParallelHash256.
* ```ts
* parallelhash256(new Uint8Array([1, 2, 3]));
* ```
*/
export const parallelhash256: TRet<CHash<Keccak, ParallelOpts>> = /* @__PURE__ */ genPrl(
136,
32,
cshake256
);
/**
* 128-bit ParallelHash XOF. In JS, it is not parallel.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and chunking settings.
* Defaults to 16 output bytes when `dkLen` is omitted.
* See {@link ParallelOpts}.
* @returns Digest bytes.
* @example
* Hash a message with ParallelHash128 XOF output.
* ```ts
* parallelhash128xof(new Uint8Array([1, 2, 3]), { dkLen: 32 });
* ```
*/
export const parallelhash128xof: TRet<CHashXOF<Keccak, ParallelOpts>> = /* @__PURE__ */ genPrl(
168,
16,
cshake128,
true
);
/**
* 256-bit ParallelHash XOF. In JS, it is not parallel.
* @param msg - message bytes to hash
* @param opts - Optional output, personalization, and chunking settings.
* Defaults to 32 output bytes when `dkLen` is omitted.
* See {@link ParallelOpts}.
* @returns Digest bytes.
* @example
* Hash a message with ParallelHash256 XOF output.
* ```ts
* parallelhash256xof(new Uint8Array([1, 2, 3]), { dkLen: 64 });
* ```
*/
export const parallelhash256xof: TRet<CHashXOF<Keccak, ParallelOpts>> = /* @__PURE__ */ genPrl(
136,
32,
cshake256,
true
);
/**
* TurboSHAKE options.
* `D` is the domain separation byte; RFC 9861 defines output length `L`
* as a positive integer.
*/
export type TurboshakeOpts = ShakeOpts & {
/** Optional domain separation byte in the `0x01..0x7f` range. */
D?: number;
};
const genTurbo = (blockLen: number, outputLen: number) =>
createHasher<Keccak, TurboshakeOpts>((opts: TArg<TurboshakeOpts> = {}) => {
const D = opts.D === undefined ? 0x1f : opts.D;
// RFC 9861 §2.1 fixes the default `D = 0x1f`; §2.2 defines the 12-round
// TurboSHAKE family selected here.
if (!Number.isSafeInteger(D) || D < 0x01 || D > 0x7f)
throw new Error('"D" (domain separation byte) must be 0x01..0x7f, got: ' + D);
const dkLen = opts.dkLen === undefined ? outputLen : opts.dkLen;
// RFC 9861 §§2.1-2.2 define output length L as a positive integer.
if (dkLen < 1) throw new Error('"dkLen" must be >= 1');
return new Keccak(blockLen, D, dkLen, true, 12);
});
/**
* TurboSHAKE 128-bit: reduced 12-round keccak.
* Should've been a simple "shake with 12 rounds", but we got a whole new
* spec about Turbo SHAKE Pro MAX.
* @param msg - message bytes to hash
* @param opts - Optional output-length and domain-separation settings.
* RFC 9861 §2.1 defaults `D` to `0x1f`. Defaults to 32 output bytes when
* `dkLen` is omitted. See {@link TurboshakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with TurboSHAKE128.
* ```ts
* turboshake128(new Uint8Array([1, 2, 3]), { dkLen: 32 });
* ```
*/
export const turboshake128: TRet<CHashXOF<Keccak, TurboshakeOpts>> = /* @__PURE__ */ genTurbo(
168,
32
);
/**
* TurboSHAKE 256-bit: reduced 12-round keccak.
* @param msg - message bytes to hash
* @param opts - Optional output-length and domain-separation settings.
* RFC 9861 §2.1 defaults `D` to `0x1f`. Defaults to 64 output bytes when
* `dkLen` is omitted. See {@link TurboshakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with TurboSHAKE256.
* ```ts
* turboshake256(new Uint8Array([1, 2, 3]), { dkLen: 64 });
* ```
*/
export const turboshake256: TRet<CHashXOF<Keccak, TurboshakeOpts>> = /* @__PURE__ */ genTurbo(
136,
64
);
// Same as NIST rightEncode, but returns `[0]` for the zero string.
// Callers still need to keep `x < 256^255` per RFC 9861 §3.3.
function rightEncodeK12(n: number | bigint): TRet<Uint8Array> {
n = BigInt(n);
const res: number[] = [];
for (; n > 0; n >>= _8n) res.unshift(Number(n & _ffn));
res.push(res.length);
return Uint8Array.from(res);
}
/** K12 options. */
export type KangarooOpts = {
/**
* Desired digest length in bytes.
* RFC 9861 §3 defines output length `L` as a positive integer.
*/
dkLen?: number;
/**
* Optional personalization string mixed into the sponge state.
* Stateful K12 instances keep an internal copy so caller buffers can be
* wiped independently.
*/
personalization?: Uint8Array;
};
const EMPTY_BUFFER = /* @__PURE__ */ Uint8Array.of();
/** Internal K12 hash class. */
export class _KangarooTwelve extends Keccak implements HashXOF<_KangarooTwelve> {
readonly chunkLen = 8192;
private leafHash?: Keccak;
protected leafLen: number;
private personalization: Uint8Array;
private chunkPos = 0; // Position of current block in chunk
private chunksDone = 0; // How many chunks we already have
constructor(
blockLen: number,
leafLen: number,
outputLen: number,
rounds: number,
opts: TArg<KangarooOpts>
) {
super(blockLen, 0x07, outputLen, true, rounds);
// RFC 9861 §3 defines output length L as a positive integer.
if (outputLen < 1) throw new Error('"dkLen" must be >= 1');
this.leafLen = leafLen;
this.personalization =
opts.personalization === undefined
? EMPTY_BUFFER
: copyBytes(abytes(opts.personalization, undefined, 'personalization'));
}
update(data: TArg<Uint8Array>): this {
abytes(data);
const { chunkLen, blockLen, leafLen, rounds } = this;
for (let pos = 0, len = data.length; pos < len; ) {
if (this.chunkPos == chunkLen) {
if (this.leafHash) super.update(this.leafHash.digest());
else {
// RFC 9861 §3.2 switches from SingleNode (`07`) to FinalNode (`06`)
// once S exceeds 8192 bytes and prefixes S_0 with
// `03 00 00 00 00 00 00 00`.
this.suffix = 0x06; // Its safe to change suffix here since its used only in digest()
super.update(Uint8Array.from([3, 0, 0, 0, 0, 0, 0, 0]));
}
// Secondary chunks S_1..S_(n-1) become fixed-length
// CV_i = TurboSHAKE*(S_i, `0B`, 32|64) chaining values.
this.leafHash = new Keccak(blockLen, 0x0b, leafLen, false, rounds);
this.chunksDone++;
this.chunkPos = 0;
}
const take = Math.min(chunkLen - this.chunkPos, len - pos);
const chunk = data.subarray(pos, pos + take);
if (this.leafHash) this.leafHash.update(chunk);
else super.update(chunk);
this.chunkPos += take;
pos += take;
}
return this;
}
protected finish(): void {
if (this.finished) return;
const { personalization } = this;
// RFC 9861 §3.2 forms S = M || C || length_encode(|C|) before any tree hashing logic.
this.update(personalization).update(rightEncodeK12(personalization.length));
// Leaf hash
if (this.leafHash) {
// Multi-chunk K12 appends
// CV_1..CV_(n-1) || length_encode(n-1) || `FF FF`
// before the final TurboSHAKE call.
super.update(this.leafHash.digest());
super.update(rightEncodeK12(this.chunksDone));
super.update(Uint8Array.from([0xff, 0xff]));
}
super.finish.call(this);
}
destroy(): void {
super.destroy.call(this);
if (this.leafHash) this.leafHash.destroy();
// Personalization is copied on create/clone, so destroy can wipe it
// without touching caller input.
if (this.personalization !== EMPTY_BUFFER) clean(this.personalization);
this.personalization = EMPTY_BUFFER;
}
_cloneInto(to?: _KangarooTwelve): _KangarooTwelve {
const { blockLen, leafLen, leafHash, outputLen, rounds } = this;
const personalization =
this.personalization === EMPTY_BUFFER ? EMPTY_BUFFER : copyBytes(this.personalization);
// Personalization is absorbed only during finish(), so clones need the same pending value.
to ||= new _KangarooTwelve(blockLen, leafLen, outputLen, rounds, {
personalization,
});
super._cloneInto(to);
// Reused destinations can carry a stale leaf from an older multi-chunk state.
if (leafHash) to.leafHash = leafHash._cloneInto(to.leafHash);
else if (to.leafHash) {
to.leafHash.destroy();
to.leafHash = undefined;
}
// Snapshot the pending personalization so clone state does not alias caller-owned input.
to.personalization = personalization;
to.leafLen = this.leafLen;
to.chunkPos = this.chunkPos;
to.chunksDone = this.chunksDone;
return to;
}
clone(): _KangarooTwelve {
return this._cloneInto();
}
}
/**
* 128-bit KangarooTwelve (k12): reduced 12-round keccak.
* @param msg - message bytes to hash
* @param opts - Optional output and personalization settings. Defaults to
* 32 output bytes when `dkLen` is omitted. See {@link KangarooOpts}.
* @returns Digest bytes.
* @example
* Hash a message with KangarooTwelve-128.
* ```ts
* kt128(new Uint8Array([1, 2, 3]));
* ```
*/
export const kt128: TRet<CHash<_KangarooTwelve, KangarooOpts>> = /* @__PURE__ */ createHasher(
(opts: TArg<KangarooOpts> = {}) => new _KangarooTwelve(168, 32, chooseLen(opts, 32), 12, opts)
);
/**
* 256-bit KangarooTwelve (k12): reduced 12-round keccak.
* @param msg - message bytes to hash
* @param opts - Optional output and personalization settings. Defaults to
* 64 output bytes when `dkLen` is omitted. See {@link KangarooOpts}.
* @returns Digest bytes.
* @example
* Hash a message with KangarooTwelve-256.
* ```ts
* kt256(new Uint8Array([1, 2, 3]));
* ```
*/
export const kt256: TRet<CHash<_KangarooTwelve, KangarooOpts>> = /* @__PURE__ */ createHasher(
(opts: TArg<KangarooOpts> = {}) => new _KangarooTwelve(136, 64, chooseLen(opts, 64), 12, opts)
);
// MarsupilamiFourteen (14-rounds) can be defined as:
// `new KangarooTwelve(136, 64, chooseLen(opts, 64), 14, opts)`
/** KangarooTwelve-based MAC function type. */
export type HopMAC = (
key: TArg<Uint8Array>,
message: TArg<Uint8Array>,
personalization: TArg<Uint8Array>,
dkLen?: number
) => TRet<Uint8Array>;
const genHopMAC =
(hash: TArg<CHash<_KangarooTwelve, KangarooOpts>>): TRet<HopMAC> =>
(
key: TArg<Uint8Array>,
message: TArg<Uint8Array>,
personalization: TArg<Uint8Array>,
dkLen?: number
) => {
const h = hash as unknown as CHash<_KangarooTwelve, KangarooOpts>;
return h(key, { personalization: h(message, { personalization }), dkLen }) as TRet<Uint8Array>;
};
/**
* 128-bit KangarooTwelve-based MAC.
*
* These untested (there is no test vectors or implementation available). Use at your own risk.
* HopMAC128(Key, M, C, L) = KT128(Key, KT128(M, C, 32), L)
* HopMAC256(Key, M, C, L) = KT256(Key, KT256(M, C, 64), L)
* The inner KangarooTwelve call always uses a fixed 32-byte digest here,
* regardless of the outer `dkLen`.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param personalization - personalization bytes mixed into the inner hash
* @param dkLen - optional output length in bytes
* @returns Authentication tag bytes.
* @example
* Authenticate a message with HopMAC128.
* ```ts
* HopMAC128(new Uint8Array([1]), new Uint8Array([2]), new Uint8Array([3]), 32);
* ```
*/
export const HopMAC128: TRet<HopMAC> = /* @__PURE__ */ genHopMAC(kt128);
/**
* 256-bit KangarooTwelve-based MAC.
* Like `HopMAC128`, there are no test vectors or known independent
* implementations available for cross-checking.
* @param key - MAC key bytes
* @param message - message bytes to authenticate
* @param personalization - personalization bytes mixed into the inner hash
* @param dkLen - optional output length in bytes. The inner KangarooTwelve
* call still uses a fixed 64-byte digest here, regardless of the outer
* `dkLen`.
* @returns Authentication tag bytes.
* @example
* Authenticate a message with HopMAC256.
* ```ts
* HopMAC256(new Uint8Array([1]), new Uint8Array([2]), new Uint8Array([3]), 64);
* ```
*/
export const HopMAC256: TRet<HopMAC> = /* @__PURE__ */ genHopMAC(kt256);
/**
* More at
* {@link https://github.com/XKCP/XKCP/tree/master/lib/high/Keccak/PRG}.
* Accepted capacities must keep `rho = 1598 - capacity` byte-aligned, and
* `.clean()` later also requires `rate > 801`.
*/
export class _KeccakPRG extends Keccak implements PRG {
protected rate: number;
constructor(capacity: number) {
anumber(capacity);
const rate = 1600 - capacity;
const rho = rate - 2;
// Rho must be full bytes
if (capacity < 0 || capacity > 1600 - 10 || rho % 8) throw new Error('invalid capacity');
// blockLen = rho in bytes
super(rho / 8, 0, 0, true);
this.rate = rate;
this.posOut = Math.floor((rate + 7) / 8);
}
protected keccak(): void {
// Duplex padding
this.state[this.pos] ^= 0x01;
this.state[this.blockLen] ^= 0x02; // Rho is full bytes
super.keccak();
this.pos = 0;
this.posOut = 0;
}
update(data: TArg<Uint8Array>): this {
super.update(data);
this.posOut = this.blockLen;
return this;
}
protected finish(): void {}
digestInto(_out: TArg<Uint8Array>): void {
throw new Error('digest is not allowed, use .randomBytes() instead');
}
addEntropy(seed: TArg<Uint8Array>): void {
this.update(seed);
}
randomBytes(length: number): TRet<Uint8Array> {
return this.xof(length);
}
clean(): void {
// clean() mutates live sponge state just like randomBytes(),
// so destroyed instances must reject it.
aexists(this, false);
if (this.rate < 1600 / 2 + 1) throw new Error('rate is too low to use .forget()');
this.keccak();
for (let i = 0; i < this.blockLen; i++) this.state[i] = 0;
this.pos = this.blockLen;
this.keccak();
this.posOut = this.blockLen;
}
_cloneInto(to?: _KeccakPRG): _KeccakPRG {
const { rate } = this;
to ||= new _KeccakPRG(1600 - rate);
super._cloneInto(to);
to.rate = rate;
return to;
}
clone(): _KeccakPRG {
return this._cloneInto();
}
}
/**
* KeccakPRG: pseudo-random generator based on Keccak.
* See {@link https://keccak.team/files/CSF-0.1.pdf}.
* @param capacity - sponge capacity in bits. Accepted values are those that
* keep `rho = 1598 - capacity` byte-aligned; the default `254` is chosen
* because it satisfies that duplex layout while leaving a wide byte-aligned
* rate.
* @returns PRG instance backed by a Keccak sponge.
* @example
* Create a Keccak-based pseudorandom generator and read bytes from it.
* ```ts
* const prg = keccakprg(254);
* prg.randomBytes(8);
* ```
*/
export const keccakprg = (capacity = 254): TRet<_KeccakPRG> =>
new _KeccakPRG(capacity) as TRet<_KeccakPRG>;

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@ -0,0 +1,485 @@
/**
* SHA3 (keccak) hash function, based on a new "Sponge function" design.
* Different from older hashes, the internal state is bigger than output size.
*
* Check out
* {@link https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.202.pdf | FIPS-202},
* {@link https://keccak.team/keccak.html | Website}, and
* {@link https://crypto.stackexchange.com/q/15727 | the differences between
* SHA-3 and Keccak}.
*
* Check out `sha3-addons` module for cSHAKE, k12, and others.
* @module
*/
import { rotlBH, rotlBL, rotlSH, rotlSL, split } from './_u64.ts';
// prettier-ignore
import {
abytes, aexists, anumber, aoutput,
clean, createHasher,
oidNist,
swap32IfBE,
u32,
type CHash, type CHashXOF,
type Hash,
type HashInfo,
type HashXOF,
type TArg,
type TRet
} from './utils.ts';
// No __PURE__ annotations in sha3 header:
// EVERYTHING is in fact used on every export.
// Various per round constants calculations
const _0n = BigInt(0);
const _1n = BigInt(1);
const _2n = BigInt(2);
const _7n = BigInt(7);
const _256n = BigInt(256);
// FIPS 202 Algorithm 5 rc(): when the outgoing bit is 1, the 8-bit LFSR xors
// taps 0, 4, 5, and 6, which compresses to the feedback mask `0x71`.
const _0x71n = BigInt(0x71);
const SHA3_PI: number[] = [];
const SHA3_ROTL: number[] = [];
const _SHA3_IOTA: bigint[] = []; // no pure annotation: var is always used
for (let round = 0, R = _1n, x = 1, y = 0; round < 24; round++) {
// Pi
[x, y] = [y, (2 * x + 3 * y) % 5];
SHA3_PI.push(2 * (5 * y + x));
// Rotational
SHA3_ROTL.push((((round + 1) * (round + 2)) / 2) % 64);
// Iota
let t = _0n;
for (let j = 0; j < 7; j++) {
R = ((R << _1n) ^ ((R >> _7n) * _0x71n)) % _256n;
if (R & _2n) t ^= _1n << ((_1n << BigInt(j)) - _1n);
}
_SHA3_IOTA.push(t);
}
const IOTAS = split(_SHA3_IOTA, true);
// `split(..., true)` keeps the local little-endian lane-word layout used by
// `state32`, so these `H` / `L` tables follow the file's first-word /
// second-word lane slots rather than `_u64.ts`'s usual high/low naming.
const SHA3_IOTA_H = IOTAS[0];
const SHA3_IOTA_L = IOTAS[1];
// Left rotation (without 0, 32, 64)
const rotlH = (h: number, l: number, s: number) => (s > 32 ? rotlBH(h, l, s) : rotlSH(h, l, s));
const rotlL = (h: number, l: number, s: number) => (s > 32 ? rotlBL(h, l, s) : rotlSL(h, l, s));
/**
* `keccakf1600` internal permutation, additionally allows adjusting the round count.
* @param s - 5x5 Keccak state encoded as 25 lanes split into 50 uint32 words
* in this file's local little-endian lane-word order
* @param rounds - number of rounds to execute
* @throws If `rounds` is outside the supported `1..24` range. {@link Error}
* @example
* Permute a Keccak state with the default 24 rounds.
* ```ts
* keccakP(new Uint32Array(50));
* ```
*/
export function keccakP(s: TArg<Uint32Array>, rounds: number = 24): void {
anumber(rounds, 'rounds');
// This implementation precomputes only the standard Keccak-f[1600] 24-round Iota table.
if (rounds < 1 || rounds > 24) throw new Error('"rounds" expected integer 1..24');
const B = new Uint32Array(5 * 2);
// NOTE: all indices are x2 since we store state as u32 instead of u64 (bigints to slow in js)
for (let round = 24 - rounds; round < 24; round++) {
// Theta θ
for (let x = 0; x < 10; x++) B[x] = s[x] ^ s[x + 10] ^ s[x + 20] ^ s[x + 30] ^ s[x + 40];
for (let x = 0; x < 10; x += 2) {
const idx1 = (x + 8) % 10;
const idx0 = (x + 2) % 10;
const B0 = B[idx0];
const B1 = B[idx0 + 1];
const Th = rotlH(B0, B1, 1) ^ B[idx1];
const Tl = rotlL(B0, B1, 1) ^ B[idx1 + 1];
for (let y = 0; y < 50; y += 10) {
s[x + y] ^= Th;
s[x + y + 1] ^= Tl;
}
}
// Rho (ρ) and Pi (π)
let curH = s[2];
let curL = s[3];
for (let t = 0; t < 24; t++) {
const shift = SHA3_ROTL[t];
const Th = rotlH(curH, curL, shift);
const Tl = rotlL(curH, curL, shift);
const PI = SHA3_PI[t];
curH = s[PI];
curL = s[PI + 1];
s[PI] = Th;
s[PI + 1] = Tl;
}
// Chi (χ)
// Same as:
// for (let x = 0; x < 10; x++) B[x] = s[y + x];
// for (let x = 0; x < 10; x++) s[y + x] ^= ~B[(x + 2) % 10] & B[(x + 4) % 10];
for (let y = 0; y < 50; y += 10) {
const b0 = s[y],
b1 = s[y + 1],
b2 = s[y + 2],
b3 = s[y + 3];
s[y] ^= ~s[y + 2] & s[y + 4];
s[y + 1] ^= ~s[y + 3] & s[y + 5];
s[y + 2] ^= ~s[y + 4] & s[y + 6];
s[y + 3] ^= ~s[y + 5] & s[y + 7];
s[y + 4] ^= ~s[y + 6] & s[y + 8];
s[y + 5] ^= ~s[y + 7] & s[y + 9];
s[y + 6] ^= ~s[y + 8] & b0;
s[y + 7] ^= ~s[y + 9] & b1;
s[y + 8] ^= ~b0 & b2;
s[y + 9] ^= ~b1 & b3;
}
// Iota (ι)
s[0] ^= SHA3_IOTA_H[round];
s[1] ^= SHA3_IOTA_L[round];
}
clean(B);
}
/**
* Keccak sponge function.
* @param blockLen - absorb/squeeze rate in bytes
* @param suffix - domain separation suffix byte
* @param outputLen - default digest length in bytes. This base sponge only
* requires a non-negative integer; wrappers that need positive output
* lengths must enforce that themselves.
* @param enableXOF - whether XOF output is allowed
* @param rounds - number of Keccak-f rounds
* @example
* Build a sponge state, absorb bytes, then finalize a digest.
* ```ts
* const hash = new Keccak(136, 0x06, 32);
* hash.update(new Uint8Array([1, 2, 3]));
* hash.digest();
* ```
*/
export class Keccak implements Hash<Keccak>, HashXOF<Keccak> {
protected state: Uint8Array;
protected pos = 0;
protected posOut = 0;
protected finished = false;
protected state32: Uint32Array;
protected destroyed = false;
public blockLen: number;
public suffix: number;
public outputLen: number;
public canXOF: boolean;
protected enableXOF = false;
protected rounds: number;
// NOTE: we accept arguments in bytes instead of bits here.
constructor(
blockLen: number,
suffix: number,
outputLen: number,
enableXOF = false,
rounds: number = 24
) {
this.blockLen = blockLen;
this.suffix = suffix;
this.outputLen = outputLen;
this.enableXOF = enableXOF;
this.canXOF = enableXOF;
this.rounds = rounds;
// Can be passed from user as dkLen
anumber(outputLen, 'outputLen');
// 1600 = 5x5 matrix of 64bit. 1600 bits === 200 bytes
// 0 < blockLen < 200
if (!(0 < blockLen && blockLen < 200))
throw new Error('only keccak-f1600 function is supported');
this.state = new Uint8Array(200);
this.state32 = u32(this.state);
}
clone(): Keccak {
return this._cloneInto();
}
protected keccak(): void {
swap32IfBE(this.state32);
keccakP(this.state32, this.rounds);
swap32IfBE(this.state32);
this.posOut = 0;
this.pos = 0;
}
update(data: TArg<Uint8Array>): this {
aexists(this);
abytes(data);
const { blockLen, state } = this;
const len = data.length;
for (let pos = 0; pos < len; ) {
const take = Math.min(blockLen - this.pos, len - pos);
for (let i = 0; i < take; i++) state[this.pos++] ^= data[pos++];
if (this.pos === blockLen) this.keccak();
}
return this;
}
protected finish(): void {
if (this.finished) return;
this.finished = true;
const { state, suffix, pos, blockLen } = this;
// FIPS 202 appends the SHA3/SHAKE domain-separation suffix before pad10*1.
// These byte values already include the first padding bit, while the
// final `0x80` below supplies the closing `1` bit in the last rate byte.
state[pos] ^= suffix;
// If that combined suffix lands in the last rate byte and already sets
// bit 7, absorb it first so the final pad10*1 bit can be xored into a
// fresh block.
if ((suffix & 0x80) !== 0 && pos === blockLen - 1) this.keccak();
state[blockLen - 1] ^= 0x80;
this.keccak();
}
protected writeInto(out: TArg<Uint8Array>): TRet<Uint8Array> {
aexists(this, false);
abytes(out);
this.finish();
const bufferOut = this.state;
const { blockLen } = this;
for (let pos = 0, len = out.length; pos < len; ) {
if (this.posOut >= blockLen) this.keccak();
const take = Math.min(blockLen - this.posOut, len - pos);
out.set(bufferOut.subarray(this.posOut, this.posOut + take), pos);
this.posOut += take;
pos += take;
}
return out as TRet<Uint8Array>;
}
xofInto(out: TArg<Uint8Array>): TRet<Uint8Array> {
// Plain SHA3/Keccak usage with XOF is probably a mistake, but this base
// class is also reused by SHAKE/cSHAKE/KMAC/TupleHash/ParallelHash/
// TurboSHAKE/KangarooTwelve wrappers that intentionally enable XOF.
if (!this.enableXOF) throw new Error('XOF is not possible for this instance');
return this.writeInto(out);
}
xof(bytes: number): TRet<Uint8Array> {
anumber(bytes);
return this.xofInto(new Uint8Array(bytes));
}
digestInto(out: TArg<Uint8Array>): void {
aoutput(out, this);
if (this.finished) throw new Error('digest() was already called');
// `aoutput(...)` allows oversized buffers; digestInto() must fill only the advertised digest.
this.writeInto(out.subarray(0, this.outputLen));
this.destroy();
}
digest(): TRet<Uint8Array> {
const out = new Uint8Array(this.outputLen);
this.digestInto(out);
return out as TRet<Uint8Array>;
}
destroy(): void {
this.destroyed = true;
clean(this.state);
}
_cloneInto(to?: Keccak): Keccak {
const { blockLen, suffix, outputLen, rounds, enableXOF } = this;
to ||= new Keccak(blockLen, suffix, outputLen, enableXOF, rounds);
// Reused destinations can come from a different rate/capacity variant, so clone must rewrite
// the sponge geometry as well as the state words.
to.blockLen = blockLen;
to.state32.set(this.state32);
to.pos = this.pos;
to.posOut = this.posOut;
to.finished = this.finished;
to.rounds = rounds;
// Suffix can change in cSHAKE
to.suffix = suffix;
to.outputLen = outputLen;
to.enableXOF = enableXOF;
// Clones must preserve the public capability bit too; `_KMAC` reuses this path and deep clone
// tests compare instance fields directly, so leaving `canXOF` behind makes the clone lie.
to.canXOF = this.canXOF;
to.destroyed = this.destroyed;
return to;
}
}
const genKeccak = (
suffix: number,
blockLen: number,
outputLen: number,
info: TArg<HashInfo> = {}
) => createHasher(() => new Keccak(blockLen, suffix, outputLen), info);
/**
* SHA3-224 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA3-224.
* ```ts
* sha3_224(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha3_224: TRet<CHash> = /* @__PURE__ */ genKeccak(
0x06,
144,
28,
/* @__PURE__ */ oidNist(0x07)
);
/**
* SHA3-256 hash function. Different from keccak-256.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA3-256.
* ```ts
* sha3_256(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha3_256: TRet<CHash> = /* @__PURE__ */ genKeccak(
0x06,
136,
32,
/* @__PURE__ */ oidNist(0x08)
);
/**
* SHA3-384 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA3-384.
* ```ts
* sha3_384(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha3_384: TRet<CHash> = /* @__PURE__ */ genKeccak(
0x06,
104,
48,
/* @__PURE__ */ oidNist(0x09)
);
/**
* SHA3-512 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with SHA3-512.
* ```ts
* sha3_512(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha3_512: TRet<CHash> = /* @__PURE__ */ genKeccak(
0x06,
72,
64,
/* @__PURE__ */ oidNist(0x0a)
);
/**
* Keccak-224 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with Keccak-224.
* ```ts
* keccak_224(new Uint8Array([97, 98, 99]));
* ```
*/
export const keccak_224: TRet<CHash> = /* @__PURE__ */ genKeccak(0x01, 144, 28);
/**
* Keccak-256 hash function. Different from SHA3-256.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with Keccak-256.
* ```ts
* keccak_256(new Uint8Array([97, 98, 99]));
* ```
*/
export const keccak_256: TRet<CHash> = /* @__PURE__ */ genKeccak(0x01, 136, 32);
/**
* Keccak-384 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with Keccak-384.
* ```ts
* keccak_384(new Uint8Array([97, 98, 99]));
* ```
*/
export const keccak_384: TRet<CHash> = /* @__PURE__ */ genKeccak(0x01, 104, 48);
/**
* Keccak-512 hash function.
* @param msg - message bytes to hash
* @returns Digest bytes.
* @example
* Hash a message with Keccak-512.
* ```ts
* keccak_512(new Uint8Array([97, 98, 99]));
* ```
*/
export const keccak_512: TRet<CHash> = /* @__PURE__ */ genKeccak(0x01, 72, 64);
/** Options for SHAKE XOF. */
export type ShakeOpts = {
/** Desired number of output bytes. */
dkLen?: number;
};
const genShake = (suffix: number, blockLen: number, outputLen: number, info: TArg<HashInfo> = {}) =>
createHasher<Keccak, ShakeOpts>(
(opts: ShakeOpts = {}) =>
new Keccak(blockLen, suffix, opts.dkLen === undefined ? outputLen : opts.dkLen, true),
info
);
/**
* SHAKE128 XOF with 128-bit security and a 16-byte default output.
* @param msg - message bytes to hash
* @param opts - Optional output-length override. See {@link ShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with SHAKE128.
* ```ts
* shake128(new Uint8Array([97, 98, 99]), { dkLen: 32 });
* ```
*/
export const shake128: TRet<CHashXOF<Keccak, ShakeOpts>> =
/* @__PURE__ */
genShake(0x1f, 168, 16, /* @__PURE__ */ oidNist(0x0b));
/**
* SHAKE256 XOF with 256-bit security and a 32-byte default output.
* @param msg - message bytes to hash
* @param opts - Optional output-length override. See {@link ShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with SHAKE256.
* ```ts
* shake256(new Uint8Array([97, 98, 99]), { dkLen: 64 });
* ```
*/
export const shake256: TRet<CHashXOF<Keccak, ShakeOpts>> =
/* @__PURE__ */
genShake(0x1f, 136, 32, /* @__PURE__ */ oidNist(0x0c));
/**
* SHAKE128 XOF with 256-bit output (NIST version).
* @param msg - message bytes to hash
* @param opts - Optional output-length override. See {@link ShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with SHAKE128 using a 32-byte default output.
* ```ts
* shake128_32(new Uint8Array([97, 98, 99]), { dkLen: 32 });
* ```
*/
export const shake128_32: TRet<CHashXOF<Keccak, ShakeOpts>> =
/* @__PURE__ */
genShake(0x1f, 168, 32, /* @__PURE__ */ oidNist(0x0b));
/**
* SHAKE256 XOF with 512-bit output (NIST version).
* @param msg - message bytes to hash
* @param opts - Optional output-length override. See {@link ShakeOpts}.
* @returns Digest bytes.
* @example
* Hash a message with SHAKE256 using a 64-byte default output.
* ```ts
* shake256_64(new Uint8Array([97, 98, 99]), { dkLen: 64 });
* ```
*/
export const shake256_64: TRet<CHashXOF<Keccak, ShakeOpts>> =
/* @__PURE__ */
genShake(0x1f, 136, 64, /* @__PURE__ */ oidNist(0x0c));

848
electron/node_modules/@noble/hashes/src/utils.ts generated vendored Normal file
View file

@ -0,0 +1,848 @@
/**
* Utilities for hex, bytes, CSPRNG.
* @module
*/
/*! noble-hashes - MIT License (c) 2022 Paul Miller (paulmillr.com) */
/**
* Bytes API type helpers for old + new TypeScript.
*
* TS 5.6 has `Uint8Array`, while TS 5.9+ made it generic `Uint8Array<ArrayBuffer>`.
* We can't use specific return type, because TS 5.6 will error.
* We can't use generic return type, because most TS 5.9 software will expect specific type.
*
* Maps typed-array input leaves to broad forms.
* These are compatibility adapters, not ownership guarantees.
*
* - `TArg` keeps byte inputs broad.
* - `TRet` marks byte outputs for TS 5.6 and TS 5.9+ compatibility.
*/
export type TypedArg<T> = T extends BigInt64Array
? BigInt64Array
: T extends BigUint64Array
? BigUint64Array
: T extends Float32Array
? Float32Array
: T extends Float64Array
? Float64Array
: T extends Int16Array
? Int16Array
: T extends Int32Array
? Int32Array
: T extends Int8Array
? Int8Array
: T extends Uint16Array
? Uint16Array
: T extends Uint32Array
? Uint32Array
: T extends Uint8ClampedArray
? Uint8ClampedArray
: T extends Uint8Array
? Uint8Array
: never;
/** Maps typed-array output leaves to narrow TS-compatible forms. */
export type TypedRet<T> = T extends BigInt64Array
? ReturnType<typeof BigInt64Array.of>
: T extends BigUint64Array
? ReturnType<typeof BigUint64Array.of>
: T extends Float32Array
? ReturnType<typeof Float32Array.of>
: T extends Float64Array
? ReturnType<typeof Float64Array.of>
: T extends Int16Array
? ReturnType<typeof Int16Array.of>
: T extends Int32Array
? ReturnType<typeof Int32Array.of>
: T extends Int8Array
? ReturnType<typeof Int8Array.of>
: T extends Uint16Array
? ReturnType<typeof Uint16Array.of>
: T extends Uint32Array
? ReturnType<typeof Uint32Array.of>
: T extends Uint8ClampedArray
? ReturnType<typeof Uint8ClampedArray.of>
: T extends Uint8Array
? ReturnType<typeof Uint8Array.of>
: never;
/** Recursively adapts byte-carrying API input types. See {@link TypedArg}. */
export type TArg<T> =
| T
| ([TypedArg<T>] extends [never]
? T extends (...args: infer A) => infer R
? ((...args: { [K in keyof A]: TRet<A[K]> }) => TArg<R>) & {
[K in keyof T]: T[K] extends (...args: any) => any ? T[K] : TArg<T[K]>;
}
: T extends [infer A, ...infer R]
? [TArg<A>, ...{ [K in keyof R]: TArg<R[K]> }]
: T extends readonly [infer A, ...infer R]
? readonly [TArg<A>, ...{ [K in keyof R]: TArg<R[K]> }]
: T extends (infer A)[]
? TArg<A>[]
: T extends readonly (infer A)[]
? readonly TArg<A>[]
: T extends Promise<infer A>
? Promise<TArg<A>>
: T extends object
? { [K in keyof T]: TArg<T[K]> }
: T
: TypedArg<T>);
/** Recursively adapts byte-carrying API output types. See {@link TypedArg}. */
export type TRet<T> = T extends unknown
? T &
([TypedRet<T>] extends [never]
? T extends (...args: infer A) => infer R
? ((...args: { [K in keyof A]: TArg<A[K]> }) => TRet<R>) & {
[K in keyof T]: T[K] extends (...args: any) => any ? T[K] : TRet<T[K]>;
}
: T extends [infer A, ...infer R]
? [TRet<A>, ...{ [K in keyof R]: TRet<R[K]> }]
: T extends readonly [infer A, ...infer R]
? readonly [TRet<A>, ...{ [K in keyof R]: TRet<R[K]> }]
: T extends (infer A)[]
? TRet<A>[]
: T extends readonly (infer A)[]
? readonly TRet<A>[]
: T extends Promise<infer A>
? Promise<TRet<A>>
: T extends object
? { [K in keyof T]: TRet<T[K]> }
: T
: TypedRet<T>)
: never;
/**
* Checks if something is Uint8Array. Be careful: nodejs Buffer will return true.
* @param a - value to test
* @returns `true` when the value is a Uint8Array-compatible view.
* @example
* Check whether a value is a Uint8Array-compatible view.
* ```ts
* isBytes(new Uint8Array([1, 2, 3]));
* ```
*/
export function isBytes(a: unknown): a is Uint8Array {
// Plain `instanceof Uint8Array` is too strict for some Buffer / proxy / cross-realm cases.
// The fallback still requires a real ArrayBuffer view, so plain
// JSON-deserialized `{ constructor: ... }` spoofing is rejected, and
// `BYTES_PER_ELEMENT === 1` keeps the fallback on byte-oriented views.
return (
a instanceof Uint8Array ||
(ArrayBuffer.isView(a) &&
a.constructor.name === 'Uint8Array' &&
'BYTES_PER_ELEMENT' in a &&
a.BYTES_PER_ELEMENT === 1)
);
}
/**
* Asserts something is a non-negative integer.
* @param n - number to validate
* @param title - label included in thrown errors
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @example
* Validate a non-negative integer option.
* ```ts
* anumber(32, 'length');
* ```
*/
export function anumber(n: number, title: string = ''): void {
if (typeof n !== 'number') {
const prefix = title && `"${title}" `;
throw new TypeError(`${prefix}expected number, got ${typeof n}`);
}
if (!Number.isSafeInteger(n) || n < 0) {
const prefix = title && `"${title}" `;
throw new RangeError(`${prefix}expected integer >= 0, got ${n}`);
}
}
/**
* Asserts something is Uint8Array.
* @param value - value to validate
* @param length - optional exact length constraint
* @param title - label included in thrown errors
* @returns The validated byte array.
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @example
* Validate that a value is a byte array.
* ```ts
* abytes(new Uint8Array([1, 2, 3]));
* ```
*/
export function abytes(
value: TArg<Uint8Array>,
length?: number,
title: string = ''
): TRet<Uint8Array> {
const bytes = isBytes(value);
const len = value?.length;
const needsLen = length !== undefined;
if (!bytes || (needsLen && len !== length)) {
const prefix = title && `"${title}" `;
const ofLen = needsLen ? ` of length ${length}` : '';
const got = bytes ? `length=${len}` : `type=${typeof value}`;
const message = prefix + 'expected Uint8Array' + ofLen + ', got ' + got;
if (!bytes) throw new TypeError(message);
throw new RangeError(message);
}
return value as TRet<Uint8Array>;
}
/**
* Copies bytes into a fresh Uint8Array.
* Buffer-style slices can alias the same backing store, so callers that need ownership should copy.
* @param bytes - source bytes to clone
* @returns Freshly allocated copy of `bytes`.
* @throws On wrong argument types. {@link TypeError}
* @example
* Clone a byte array before mutating it.
* ```ts
* const copy = copyBytes(new Uint8Array([1, 2, 3]));
* ```
*/
export function copyBytes(bytes: TArg<Uint8Array>): TRet<Uint8Array> {
// `Uint8Array.from(...)` would also accept arrays / other typed arrays. Keep this helper strict
// because callers use it at byte-validation boundaries before mutating the detached copy.
return Uint8Array.from(abytes(bytes)) as TRet<Uint8Array>;
}
/**
* Asserts something is a wrapped hash constructor.
* @param h - hash constructor to validate
* @throws On wrong argument types or invalid hash wrapper shape. {@link TypeError}
* @throws On invalid hash metadata ranges or values. {@link RangeError}
* @throws If the hash metadata allows empty outputs or block sizes. {@link Error}
* @example
* Validate a callable hash wrapper.
* ```ts
* import { ahash } from '@noble/hashes/utils.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* ahash(sha256);
* ```
*/
export function ahash(h: TArg<CHash>): void {
if (typeof h !== 'function' || typeof h.create !== 'function')
throw new TypeError('Hash must wrapped by utils.createHasher');
anumber(h.outputLen);
anumber(h.blockLen);
// HMAC and KDF callers treat these as real byte lengths; allowing zero lets fake wrappers pass
// validation and can produce empty outputs instead of failing fast.
if (h.outputLen < 1) throw new Error('"outputLen" must be >= 1');
if (h.blockLen < 1) throw new Error('"blockLen" must be >= 1');
}
/**
* Asserts a hash instance has not been destroyed or finished.
* @param instance - hash instance to validate
* @param checkFinished - whether to reject finalized instances
* @throws If the hash instance has already been destroyed or finalized. {@link Error}
* @example
* Validate that a hash instance is still usable.
* ```ts
* import { aexists } from '@noble/hashes/utils.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const hash = sha256.create();
* aexists(hash);
* ```
*/
export function aexists(instance: any, checkFinished = true): void {
if (instance.destroyed) throw new Error('Hash instance has been destroyed');
if (checkFinished && instance.finished) throw new Error('Hash#digest() has already been called');
}
/**
* Asserts output is a sufficiently-sized byte array.
* @param out - destination buffer
* @param instance - hash instance providing output length
* Oversized buffers are allowed; downstream code only promises to fill the first `outputLen` bytes.
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @example
* Validate a caller-provided digest buffer.
* ```ts
* import { aoutput } from '@noble/hashes/utils.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const hash = sha256.create();
* aoutput(new Uint8Array(hash.outputLen), hash);
* ```
*/
export function aoutput(out: any, instance: any): void {
abytes(out, undefined, 'digestInto() output');
const min = instance.outputLen;
if (out.length < min) {
throw new RangeError('"digestInto() output" expected to be of length >=' + min);
}
}
/** Generic type encompassing 8/16/32-byte array views, but not 64-bit variants. */
// prettier-ignore
export type TypedArray = Int8Array | Uint8ClampedArray | Uint8Array |
Uint16Array | Int16Array | Uint32Array | Int32Array;
/**
* Casts a typed array view to Uint8Array.
* @param arr - source typed array
* @returns Uint8Array view over the same buffer.
* @example
* Reinterpret a typed array as bytes.
* ```ts
* u8(new Uint32Array([1, 2]));
* ```
*/
export function u8(arr: TArg<TypedArray>): TRet<Uint8Array> {
return new Uint8Array(arr.buffer, arr.byteOffset, arr.byteLength) as TRet<Uint8Array>;
}
/**
* Casts a typed array view to Uint32Array.
* `arr.byteOffset` must already be 4-byte aligned or the platform
* Uint32Array constructor will throw.
* @param arr - source typed array
* @returns Uint32Array view over the same buffer.
* @example
* Reinterpret a byte array as 32-bit words.
* ```ts
* u32(new Uint8Array(8));
* ```
*/
export function u32(arr: TArg<TypedArray>): TRet<Uint32Array> {
return new Uint32Array(
arr.buffer,
arr.byteOffset,
Math.floor(arr.byteLength / 4)
) as TRet<Uint32Array>;
}
/**
* Zeroizes typed arrays in place. Warning: JS provides no guarantees.
* @param arrays - arrays to overwrite with zeros
* @example
* Zeroize sensitive buffers in place.
* ```ts
* clean(new Uint8Array([1, 2, 3]));
* ```
*/
export function clean(...arrays: TArg<TypedArray[]>): void {
for (let i = 0; i < arrays.length; i++) {
arrays[i].fill(0);
}
}
/**
* Creates a DataView for byte-level manipulation.
* @param arr - source typed array
* @returns DataView over the same buffer region.
* @example
* Create a DataView over an existing buffer.
* ```ts
* createView(new Uint8Array(4));
* ```
*/
export function createView(arr: TArg<TypedArray>): DataView {
return new DataView(arr.buffer, arr.byteOffset, arr.byteLength);
}
/**
* Rotate-right operation for uint32 values.
* @param word - source word
* @param shift - shift amount in bits
* @returns Rotated word.
* @example
* Rotate a 32-bit word to the right.
* ```ts
* rotr(0x12345678, 8);
* ```
*/
export function rotr(word: number, shift: number): number {
return (word << (32 - shift)) | (word >>> shift);
}
/**
* Rotate-left operation for uint32 values.
* @param word - source word
* @param shift - shift amount in bits
* @returns Rotated word.
* @example
* Rotate a 32-bit word to the left.
* ```ts
* rotl(0x12345678, 8);
* ```
*/
export function rotl(word: number, shift: number): number {
return (word << shift) | ((word >>> (32 - shift)) >>> 0);
}
/** Whether the current platform is little-endian. */
export const isLE: boolean = /* @__PURE__ */ (() =>
new Uint8Array(new Uint32Array([0x11223344]).buffer)[0] === 0x44)();
/**
* Byte-swap operation for uint32 values.
* @param word - source word
* @returns Word with reversed byte order.
* @example
* Reverse the byte order of a 32-bit word.
* ```ts
* byteSwap(0x11223344);
* ```
*/
export function byteSwap(word: number): number {
return (
((word << 24) & 0xff000000) |
((word << 8) & 0xff0000) |
((word >>> 8) & 0xff00) |
((word >>> 24) & 0xff)
);
}
/**
* Conditionally byte-swaps one 32-bit word on big-endian platforms.
* @param n - source word
* @returns Original or byte-swapped word depending on platform endianness.
* @example
* Normalize a 32-bit word for host endianness.
* ```ts
* swap8IfBE(0x11223344);
* ```
*/
export const swap8IfBE: (n: number) => number = isLE
? (n: number) => n
: (n: number) => byteSwap(n) >>> 0;
/**
* Byte-swaps every word of a Uint32Array in place.
* @param arr - array to mutate
* @returns The same array after mutation; callers pass live state arrays here.
* @example
* Reverse the byte order of every word in place.
* ```ts
* byteSwap32(new Uint32Array([0x11223344]));
* ```
*/
export function byteSwap32(arr: TArg<Uint32Array>): TRet<Uint32Array> {
for (let i = 0; i < arr.length; i++) {
arr[i] = byteSwap(arr[i]);
}
return arr as TRet<Uint32Array>;
}
/**
* Conditionally byte-swaps a Uint32Array on big-endian platforms.
* @param u - array to normalize for host endianness
* @returns Original or byte-swapped array depending on platform endianness.
* On big-endian runtimes this mutates `u` in place via `byteSwap32(...)`.
* @example
* Normalize a word array for host endianness.
* ```ts
* swap32IfBE(new Uint32Array([0x11223344]));
* ```
*/
export const swap32IfBE: (u: TArg<Uint32Array>) => TRet<Uint32Array> = isLE
? (u: TArg<Uint32Array>) => u as TRet<Uint32Array>
: byteSwap32;
// Built-in hex conversion https://caniuse.com/mdn-javascript_builtins_uint8array_fromhex
const hasHexBuiltin: boolean = /* @__PURE__ */ (() =>
// @ts-ignore
typeof Uint8Array.from([]).toHex === 'function' && typeof Uint8Array.fromHex === 'function')();
// Array where index 0xf0 (240) is mapped to string 'f0'
const hexes = /* @__PURE__ */ Array.from({ length: 256 }, (_, i) =>
i.toString(16).padStart(2, '0')
);
/**
* Convert byte array to hex string.
* Uses the built-in function when available and assumes it matches the tested
* fallback semantics.
* @param bytes - bytes to encode
* @returns Lowercase hexadecimal string.
* @throws On wrong argument types. {@link TypeError}
* @example
* Convert bytes to lowercase hexadecimal.
* ```ts
* bytesToHex(Uint8Array.from([0xca, 0xfe, 0x01, 0x23])); // 'cafe0123'
* ```
*/
export function bytesToHex(bytes: TArg<Uint8Array>): string {
abytes(bytes);
// @ts-ignore
if (hasHexBuiltin) return bytes.toHex();
// pre-caching improves the speed 6x
let hex = '';
for (let i = 0; i < bytes.length; i++) {
hex += hexes[bytes[i]];
}
return hex;
}
// We use optimized technique to convert hex string to byte array
const asciis = { _0: 48, _9: 57, A: 65, F: 70, a: 97, f: 102 } as const;
function asciiToBase16(ch: number): number | undefined {
if (ch >= asciis._0 && ch <= asciis._9) return ch - asciis._0; // '2' => 50-48
if (ch >= asciis.A && ch <= asciis.F) return ch - (asciis.A - 10); // 'B' => 66-(65-10)
if (ch >= asciis.a && ch <= asciis.f) return ch - (asciis.a - 10); // 'b' => 98-(97-10)
return;
}
/**
* Convert hex string to byte array. Uses built-in function, when available.
* @param hex - hexadecimal string to decode
* @returns Decoded bytes.
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @example
* Decode lowercase hexadecimal into bytes.
* ```ts
* hexToBytes('cafe0123'); // Uint8Array.from([0xca, 0xfe, 0x01, 0x23])
* ```
*/
export function hexToBytes(hex: string): TRet<Uint8Array> {
if (typeof hex !== 'string') throw new TypeError('hex string expected, got ' + typeof hex);
if (hasHexBuiltin) {
try {
return (Uint8Array as any).fromHex(hex);
} catch (error) {
if (error instanceof SyntaxError) throw new RangeError(error.message);
throw error;
}
}
const hl = hex.length;
const al = hl / 2;
if (hl % 2) throw new RangeError('hex string expected, got unpadded hex of length ' + hl);
const array = new Uint8Array(al);
for (let ai = 0, hi = 0; ai < al; ai++, hi += 2) {
const n1 = asciiToBase16(hex.charCodeAt(hi));
const n2 = asciiToBase16(hex.charCodeAt(hi + 1));
if (n1 === undefined || n2 === undefined) {
const char = hex[hi] + hex[hi + 1];
throw new RangeError(
'hex string expected, got non-hex character "' + char + '" at index ' + hi
);
}
array[ai] = n1 * 16 + n2; // multiply first octet, e.g. 'a3' => 10*16+3 => 160 + 3 => 163
}
return array;
}
/**
* There is no setImmediate in browser and setTimeout is slow.
* This yields to the Promise/microtask scheduler queue, not to timers or the
* full macrotask event loop.
* @example
* Yield to the next scheduler tick.
* ```ts
* await nextTick();
* ```
*/
export const nextTick = async (): Promise<void> => {};
/**
* Returns control to the Promise/microtask scheduler every `tick`
* milliseconds to avoid blocking long loops.
* @param iters - number of loop iterations to run
* @param tick - maximum time slice in milliseconds
* @param cb - callback executed on each iteration
* @example
* Run a loop that periodically yields back to the event loop.
* ```ts
* await asyncLoop(2, 0, () => {});
* ```
*/
export async function asyncLoop(
iters: number,
tick: number,
cb: (i: number) => void
): Promise<void> {
let ts = Date.now();
for (let i = 0; i < iters; i++) {
cb(i);
// Date.now() is not monotonic, so in case if clock goes backwards we return return control too
const diff = Date.now() - ts;
if (diff >= 0 && diff < tick) continue;
await nextTick();
ts += diff;
}
}
// Global symbols, but ts doesn't see them: https://github.com/microsoft/TypeScript/issues/31535
declare const TextEncoder: any;
/**
* Converts string to bytes using UTF8 encoding.
* Built-in doesn't validate input to be string: we do the check.
* Non-ASCII details are delegated to the platform `TextEncoder`.
* @param str - string to encode
* @returns UTF-8 encoded bytes.
* @throws On wrong argument types. {@link TypeError}
* @example
* Encode a string as UTF-8 bytes.
* ```ts
* utf8ToBytes('abc'); // Uint8Array.from([97, 98, 99])
* ```
*/
export function utf8ToBytes(str: string): TRet<Uint8Array> {
if (typeof str !== 'string') throw new TypeError('string expected');
return new Uint8Array(new TextEncoder().encode(str)); // https://bugzil.la/1681809
}
/** KDFs can accept string or Uint8Array for user convenience. */
export type KDFInput = string | Uint8Array;
/**
* Helper for KDFs: consumes Uint8Array or string.
* String inputs are UTF-8 encoded; byte-array inputs stay aliased to the caller buffer.
* @param data - user-provided KDF input
* @param errorTitle - label included in thrown errors
* @returns Byte representation of the input.
* @throws On wrong argument types. {@link TypeError}
* @example
* Normalize KDF input to bytes.
* ```ts
* kdfInputToBytes('password');
* ```
*/
export function kdfInputToBytes(data: TArg<KDFInput>, errorTitle = ''): TRet<Uint8Array> {
if (typeof data === 'string') return utf8ToBytes(data);
return abytes(data, undefined, errorTitle);
}
/**
* Copies several Uint8Arrays into one.
* @param arrays - arrays to concatenate
* @returns Concatenated byte array.
* @throws On wrong argument types. {@link TypeError}
* @example
* Concatenate multiple byte arrays.
* ```ts
* concatBytes(new Uint8Array([1]), new Uint8Array([2]));
* ```
*/
export function concatBytes(...arrays: TArg<Uint8Array[]>): TRet<Uint8Array> {
let sum = 0;
for (let i = 0; i < arrays.length; i++) {
const a = arrays[i];
abytes(a);
sum += a.length;
}
const res = new Uint8Array(sum);
for (let i = 0, pad = 0; i < arrays.length; i++) {
const a = arrays[i];
res.set(a, pad);
pad += a.length;
}
return res;
}
type EmptyObj = {};
/**
* Merges default options and passed options.
* @param defaults - base option object
* @param opts - user overrides
* @returns Merged option object. The merge mutates `defaults` in place.
* @throws On wrong argument types. {@link TypeError}
* @example
* Merge user overrides onto default options.
* ```ts
* checkOpts({ dkLen: 32 }, { asyncTick: 10 });
* ```
*/
export function checkOpts<T1 extends EmptyObj, T2 extends EmptyObj>(
defaults: T1,
opts?: T2
): T1 & T2 {
if (opts !== undefined && {}.toString.call(opts) !== '[object Object]')
throw new TypeError('options must be object or undefined');
const merged = Object.assign(defaults, opts);
return merged as T1 & T2;
}
/** Common interface for all hash instances. */
export interface Hash<T> {
/** Bytes processed per compression block. */
blockLen: number;
/** Bytes produced by `digest()`. */
outputLen: number;
/** Whether the instance supports XOF-style variable-length output via `xof()` / `xofInto()`. */
canXOF: boolean;
/**
* Absorbs more message bytes into the running hash state.
* @param buf - message chunk to absorb
* @returns The same hash instance for chaining.
*/
update(buf: TArg<Uint8Array>): this;
/**
* Finalizes the hash into a caller-provided buffer.
* @param buf - destination buffer
* @returns Nothing. Implementations write into `buf` in place.
*/
digestInto(buf: TArg<Uint8Array>): void;
/**
* Finalizes the hash and returns a freshly allocated digest.
* @returns Digest bytes.
*/
digest(): TRet<Uint8Array>;
/** Wipes internal state and makes the instance unusable. */
destroy(): void;
/**
* Copies the current hash state into an existing or new instance.
* @param to - Optional destination instance to reuse.
* @returns Cloned hash state.
*/
_cloneInto(to?: T): T;
/**
* Creates an independent copy of the current hash state.
* @returns Cloned hash instance.
*/
clone(): T;
}
/** Pseudorandom generator interface. */
export interface PRG {
/**
* Mixes more entropy into the generator state.
* @param seed - fresh entropy bytes
* @returns Nothing. Implementations update internal state in place.
*/
addEntropy(seed: TArg<Uint8Array>): void;
/**
* Generates pseudorandom output bytes.
* @param length - number of bytes to generate
* @returns Generated pseudorandom bytes.
*/
randomBytes(length: number): TRet<Uint8Array>;
/** Wipes generator state and makes the instance unusable. */
clean(): void;
}
/**
* XOF: streaming API to read digest in chunks.
* Same as 'squeeze' in keccak/k12 and 'seek' in blake3, but more generic name.
* When hash used in XOF mode it is up to user to call '.destroy' afterwards, since we cannot
* destroy state, next call can require more bytes.
*/
export type HashXOF<T extends Hash<T>> = Hash<T> & {
/**
* Reads more bytes from the XOF stream.
* @param bytes - number of bytes to read
* @returns Requested digest bytes.
*/
xof(bytes: number): TRet<Uint8Array>;
/**
* Reads more bytes from the XOF stream into a caller-provided buffer.
* @param buf - destination buffer
* @returns Filled output buffer.
*/
xofInto(buf: TArg<Uint8Array>): TRet<Uint8Array>;
};
/** Hash constructor or factory type. */
export type HasherCons<T, Opts = undefined> = Opts extends undefined ? () => T : (opts?: Opts) => T;
/** Optional hash metadata. */
export type HashInfo = {
/** DER-encoded object identifier bytes for the hash algorithm. */
oid?: TRet<Uint8Array>;
};
/** Callable hash function type. */
export type CHash<T extends Hash<T> = Hash<any>, Opts = undefined> = {
/** Digest size in bytes. */
outputLen: number;
/** Input block size in bytes. */
blockLen: number;
/** Whether `.create()` returns a hash instance that can be used as an XOF stream. */
canXOF: boolean;
} & HashInfo &
(Opts extends undefined
? {
(msg: TArg<Uint8Array>): TRet<Uint8Array>;
create(): T;
}
: {
(msg: TArg<Uint8Array>, opts?: TArg<Opts>): TRet<Uint8Array>;
create(opts?: Opts): T;
});
/** Callable extendable-output hash function type. */
export type CHashXOF<T extends HashXOF<T> = HashXOF<any>, Opts = undefined> = CHash<T, Opts>;
/**
* Creates a callable hash function from a stateful class constructor.
* @param hashCons - hash constructor or factory
* @param info - optional metadata such as DER OID
* @returns Frozen callable hash wrapper with `.create()`.
* Wrapper construction eagerly calls `hashCons(undefined)` once to read
* `outputLen` / `blockLen`, so constructor side effects happen at module
* init time.
* @example
* Wrap a stateful hash constructor into a callable helper.
* ```ts
* import { createHasher } from '@noble/hashes/utils.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const wrapped = createHasher(sha256.create, { oid: sha256.oid });
* wrapped(new Uint8Array([1]));
* ```
*/
export function createHasher<T extends Hash<T>, Opts = undefined>(
hashCons: HasherCons<T, Opts>,
info: TArg<HashInfo> = {}
): TRet<CHash<T, Opts>> {
const hashC: any = (msg: TArg<Uint8Array>, opts?: TArg<Opts>) =>
hashCons(opts as Opts)
.update(msg)
.digest();
const tmp = hashCons(undefined);
hashC.outputLen = tmp.outputLen;
hashC.blockLen = tmp.blockLen;
hashC.canXOF = tmp.canXOF;
hashC.create = (opts?: Opts) => hashCons(opts);
Object.assign(hashC, info);
return Object.freeze(hashC) as TRet<CHash<T, Opts>>;
}
/**
* Cryptographically secure PRNG backed by `crypto.getRandomValues`.
* @param bytesLength - number of random bytes to generate
* @returns Random bytes.
* The platform `getRandomValues()` implementation still defines any
* single-call length cap, and this helper rejects oversize requests
* with a stable library `RangeError` instead of host-specific errors.
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @throws If the current runtime does not provide `crypto.getRandomValues`. {@link Error}
* @example
* Generate a fresh random key or nonce.
* ```ts
* const key = randomBytes(16);
* ```
*/
export function randomBytes(bytesLength = 32): TRet<Uint8Array> {
// Match the repo's other length-taking helpers instead of relying on Uint8Array coercion.
anumber(bytesLength, 'bytesLength');
const cr = typeof globalThis === 'object' ? (globalThis as any).crypto : null;
if (typeof cr?.getRandomValues !== 'function')
throw new Error('crypto.getRandomValues must be defined');
// Web Cryptography API Level 2 §10.1.1:
// if `byteLength > 65536`, throw `QuotaExceededError`.
// Keep the guard explicit so callers can see the quota in code
// instead of discovering it by reading the spec or host errors.
// This wrapper surfaces the same quota as a stable library RangeError.
if (bytesLength > 65536)
throw new RangeError(`"bytesLength" expected <= 65536, got ${bytesLength}`);
return cr.getRandomValues(new Uint8Array(bytesLength));
}
/**
* Creates OID metadata for NIST hashes with prefix `06 09 60 86 48 01 65 03 04 02`.
* @param suffix - final OID byte for the selected hash.
* The helper accepts any byte even though only the documented NIST hash
* suffixes are meaningful downstream.
* @returns Object containing the DER-encoded OID.
* @example
* Build OID metadata for a NIST hash.
* ```ts
* oidNist(0x01);
* ```
*/
export const oidNist = (suffix: number): TRet<Required<HashInfo>> => ({
// Current NIST hashAlgs suffixes used here fit in one DER subidentifier octet.
// Larger suffix values would need base-128 OID encoding and a different length byte.
oid: Uint8Array.from([0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, suffix]),
});

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import { type Pbkdf2Opt } from './pbkdf2.ts';
import {
abytes,
ahash,
anumber,
checkOpts,
kdfInputToBytes,
type CHash,
type KDFInput,
type TArg,
type TRet,
} from './utils.ts';
function _subtle(): typeof crypto.subtle {
const cr = typeof globalThis === 'object' ? (globalThis as any).crypto : null;
const sb = cr?.subtle;
if (typeof sb === 'object' && sb != null) return sb;
throw new Error('crypto.subtle must be defined');
}
/** Callable WebCrypto hash function descriptor. */
export type WebHash = {
/**
* Hashes one message with the selected WebCrypto digest.
* @param msg - message bytes to hash
* @returns Promise resolving to digest bytes.
*/
(msg: TArg<Uint8Array>): Promise<TRet<Uint8Array>>;
/** WebCrypto algorithm name passed to `crypto.subtle`. */
webCryptoName: string;
/** Digest size in bytes. */
outputLen: number;
/** Input block size in bytes. */
blockLen: number;
};
function createWebHash(name: string, blockLen: number, outputLen: number): TRet<WebHash> {
const hashC: any = async (msg: TArg<Uint8Array>): Promise<TRet<Uint8Array>> => {
abytes(msg);
const crypto = _subtle();
return new Uint8Array(await crypto.digest(name, msg as BufferSource)) as TRet<Uint8Array>;
};
hashC.webCryptoName = name; // make sure it won't interfere with function name
hashC.outputLen = outputLen;
hashC.blockLen = blockLen;
hashC.create = () => {
// Present only so this async wrapper satisfies the shared
// hash-wrapper shape checked by `ahashWeb()`.
throw new Error('not implemented');
};
// Later WebCrypto HMAC/HKDF/PBKDF2 calls read descriptor metadata directly, so freezing prevents
// callers from retargeting a `sha256` wrapper into a different backend digest by mutation.
return Object.freeze(hashC) as TRet<WebHash>;
}
function ahashWeb(hash: TArg<WebHash>) {
ahash(hash as unknown as TArg<CHash>);
if (typeof hash.webCryptoName !== 'string') throw new Error('non-web hash');
}
/** WebCrypto SHA1 (RFC 3174) legacy hash function. It was cryptographically broken. */
// export const sha1: WebHash = createHash('SHA-1', 64, 20);
/**
* WebCrypto SHA2-256 hash function from RFC 6234.
* @param msg - message bytes to hash
* @returns Promise resolving to digest bytes.
* @example
* Hash a message with WebCrypto SHA2-256.
* ```ts
* await sha256(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha256: TRet<WebHash> = /* @__PURE__ */ createWebHash('SHA-256', 64, 32);
/**
* WebCrypto SHA2-384 hash function from RFC 6234.
* @param msg - message bytes to hash
* @returns Promise resolving to digest bytes.
* @example
* Hash a message with WebCrypto SHA2-384.
* ```ts
* await sha384(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha384: TRet<WebHash> = /* @__PURE__ */ createWebHash('SHA-384', 128, 48);
/**
* WebCrypto SHA2-512 hash function from RFC 6234.
* @param msg - message bytes to hash
* @returns Promise resolving to digest bytes.
* @example
* Hash a message with WebCrypto SHA2-512.
* ```ts
* await sha512(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha512: TRet<WebHash> = /* @__PURE__ */ createWebHash('SHA-512', 128, 64);
/**
* WebCrypto HMAC: RFC2104 message authentication code.
* @param hash - function that would be used e.g. sha256. Webcrypto version.
* @param key - authentication key bytes
* @param message - message bytes to authenticate
* @returns Promise resolving to authentication tag bytes.
* `.create()` exists only to mirror the synchronous API surface
* and always throws `not implemented`.
* @example
* Compute an RFC 2104 HMAC with WebCrypto.
* ```ts
* import { hmac, sha256 } from '@noble/hashes/webcrypto.js';
* await hmac(sha256, new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]));
* ```
*/
type WebHmacFn = {
(
hash: TArg<WebHash>,
key: TArg<Uint8Array>,
message: TArg<Uint8Array>
): Promise<TRet<Uint8Array>>;
create(hash: TArg<WebHash>, key: TArg<Uint8Array>): any;
};
export const hmac: TRet<WebHmacFn> = /* @__PURE__ */ (() => {
const hmac_ = async (
hash: TArg<WebHash>,
key: TArg<Uint8Array>,
message: TArg<Uint8Array>
): Promise<TRet<Uint8Array>> => {
const crypto = _subtle();
abytes(key, undefined, 'key');
abytes(message, undefined, 'message');
ahashWeb(hash);
// WebCrypto keys can't be zeroized
// prettier-ignore
const wkey = await crypto.importKey(
'raw',
key as BufferSource,
{ name: 'HMAC', hash: hash.webCryptoName },
false,
['sign']
);
return new Uint8Array(
await crypto.sign('HMAC', wkey, message as BufferSource)
) as TRet<Uint8Array>;
};
hmac_.create = (_hash: TArg<WebHash>, _key: TArg<Uint8Array>) => {
throw new Error('not implemented');
};
return hmac_ as TRet<WebHmacFn>;
})();
/**
* WebCrypto HKDF (RFC 5869): derive keys from an initial input.
* Combines hkdf_extract + hkdf_expand in one step
* @param hash - hash function that would be used (e.g. sha256). Webcrypto version.
* @param ikm - input keying material, the initial key
* @param salt - optional salt value (a non-secret random value)
* @param info - optional context and application specific information bytes
* @param length - length of output keying material in bytes.
* RFC 5869 §2.3 allows `0..255*HashLen`, so `0` requests an empty OKM.
* @returns Promise resolving to derived key bytes.
* The RFC `L <= 255 * HashLen` bound is currently enforced only by backend
* `deriveBits()` rejection, not by an explicit library-side guard.
* @throws If the current runtime does not provide `crypto.subtle`. {@link Error}
* @example
* WebCrypto HKDF (RFC 5869): derive keys from an initial input.
* ```ts
* import { hkdf, sha256 } from '@noble/hashes/webcrypto.js';
* import { randomBytes, utf8ToBytes } from '@noble/hashes/utils.js';
* const inputKey = randomBytes(32);
* const salt = randomBytes(32);
* const info = utf8ToBytes('application-key');
* const okm = await hkdf(sha256, inputKey, salt, info, 32);
* ```
*/
export async function hkdf(
hash: TArg<WebHash>,
ikm: TArg<Uint8Array>,
salt: TArg<Uint8Array | undefined>,
info: TArg<Uint8Array | undefined>,
length: number
): Promise<TRet<Uint8Array>> {
const crypto = _subtle();
ahashWeb(hash);
abytes(ikm, undefined, 'ikm');
anumber(length, 'length');
if (salt !== undefined) abytes(salt, undefined, 'salt');
if (info !== undefined) abytes(info, undefined, 'info');
const wkey = await crypto.importKey('raw', ikm as BufferSource, 'HKDF', false, ['deriveBits']);
const opts = {
name: 'HKDF',
hash: hash.webCryptoName,
salt: salt === undefined ? new Uint8Array(0) : salt,
info: info === undefined ? new Uint8Array(0) : info,
};
return new Uint8Array(await crypto.deriveBits(opts, wkey, 8 * length)) as TRet<Uint8Array>;
}
/**
* WebCrypto PBKDF2-HMAC: RFC 8018 key derivation function.
* @param hash - hash function that would be used e.g. sha256. Webcrypto version.
* @param password - password from which a derived key is generated; string
* inputs are normalized through `kdfInputToBytes()`, i.e. UTF-8
* @param salt - cryptographic salt; string inputs are normalized through
* `kdfInputToBytes()`, i.e. UTF-8
* @param opts - PBKDF2 work factor and output settings. `dkLen`, if provided,
* must be `>= 1` per RFC 8018 §5.2. See {@link Pbkdf2Opt}.
* @returns Promise resolving to derived key bytes.
* Positive-iteration enforcement is currently delegated to backend
* `deriveBits()` rejection (for example `c = 0`), not a dedicated
* library-side guard.
* @throws If the current runtime does not provide `crypto.subtle`. {@link Error}
* @example
* WebCrypto PBKDF2-HMAC: RFC 2898 key derivation function.
* ```ts
* import { pbkdf2, sha256 } from '@noble/hashes/webcrypto.js';
* const key = await pbkdf2(sha256, 'password', 'salt', { dkLen: 32, c: Math.pow(2, 18) });
* ```
*/
export async function pbkdf2(
hash: TArg<WebHash>,
password: TArg<KDFInput>,
salt: TArg<KDFInput>,
opts: Pbkdf2Opt
): Promise<TRet<Uint8Array>> {
const crypto = _subtle();
ahashWeb(hash);
const _opts = checkOpts({ dkLen: 32 }, opts);
const { c, dkLen } = _opts;
anumber(c, 'c');
anumber(dkLen, 'dkLen');
// RFC 8018 §5.2 defines dkLen as a positive integer.
if (dkLen < 1) throw new Error('"dkLen" must be >= 1');
const _password = kdfInputToBytes(password, 'password');
const _salt = kdfInputToBytes(salt, 'salt');
const key = await crypto.importKey('raw', _password as BufferSource, 'PBKDF2', false, [
'deriveBits',
]);
const deriveOpts = { name: 'PBKDF2', salt: _salt, iterations: c, hash: hash.webCryptoName };
return new Uint8Array(await crypto.deriveBits(deriveOpts, key, 8 * dkLen)) as TRet<Uint8Array>;
}

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/**
* Utilities for hex, bytes, CSPRNG.
* @module
*/
/*! noble-hashes - MIT License (c) 2022 Paul Miller (paulmillr.com) */
/**
* Bytes API type helpers for old + new TypeScript.
*
* TS 5.6 has `Uint8Array`, while TS 5.9+ made it generic `Uint8Array<ArrayBuffer>`.
* We can't use specific return type, because TS 5.6 will error.
* We can't use generic return type, because most TS 5.9 software will expect specific type.
*
* Maps typed-array input leaves to broad forms.
* These are compatibility adapters, not ownership guarantees.
*
* - `TArg` keeps byte inputs broad.
* - `TRet` marks byte outputs for TS 5.6 and TS 5.9+ compatibility.
*/
export type TypedArg<T> = T extends BigInt64Array ? BigInt64Array : T extends BigUint64Array ? BigUint64Array : T extends Float32Array ? Float32Array : T extends Float64Array ? Float64Array : T extends Int16Array ? Int16Array : T extends Int32Array ? Int32Array : T extends Int8Array ? Int8Array : T extends Uint16Array ? Uint16Array : T extends Uint32Array ? Uint32Array : T extends Uint8ClampedArray ? Uint8ClampedArray : T extends Uint8Array ? Uint8Array : never;
/** Maps typed-array output leaves to narrow TS-compatible forms. */
export type TypedRet<T> = T extends BigInt64Array ? ReturnType<typeof BigInt64Array.of> : T extends BigUint64Array ? ReturnType<typeof BigUint64Array.of> : T extends Float32Array ? ReturnType<typeof Float32Array.of> : T extends Float64Array ? ReturnType<typeof Float64Array.of> : T extends Int16Array ? ReturnType<typeof Int16Array.of> : T extends Int32Array ? ReturnType<typeof Int32Array.of> : T extends Int8Array ? ReturnType<typeof Int8Array.of> : T extends Uint16Array ? ReturnType<typeof Uint16Array.of> : T extends Uint32Array ? ReturnType<typeof Uint32Array.of> : T extends Uint8ClampedArray ? ReturnType<typeof Uint8ClampedArray.of> : T extends Uint8Array ? ReturnType<typeof Uint8Array.of> : never;
/** Recursively adapts byte-carrying API input types. See {@link TypedArg}. */
export type TArg<T> = T | ([TypedArg<T>] extends [never] ? T extends (...args: infer A) => infer R ? ((...args: {
[K in keyof A]: TRet<A[K]>;
}) => TArg<R>) & {
[K in keyof T]: T[K] extends (...args: any) => any ? T[K] : TArg<T[K]>;
} : T extends [infer A, ...infer R] ? [TArg<A>, ...{
[K in keyof R]: TArg<R[K]>;
}] : T extends readonly [infer A, ...infer R] ? readonly [TArg<A>, ...{
[K in keyof R]: TArg<R[K]>;
}] : T extends (infer A)[] ? TArg<A>[] : T extends readonly (infer A)[] ? readonly TArg<A>[] : T extends Promise<infer A> ? Promise<TArg<A>> : T extends object ? {
[K in keyof T]: TArg<T[K]>;
} : T : TypedArg<T>);
/** Recursively adapts byte-carrying API output types. See {@link TypedArg}. */
export type TRet<T> = T extends unknown ? T & ([TypedRet<T>] extends [never] ? T extends (...args: infer A) => infer R ? ((...args: {
[K in keyof A]: TArg<A[K]>;
}) => TRet<R>) & {
[K in keyof T]: T[K] extends (...args: any) => any ? T[K] : TRet<T[K]>;
} : T extends [infer A, ...infer R] ? [TRet<A>, ...{
[K in keyof R]: TRet<R[K]>;
}] : T extends readonly [infer A, ...infer R] ? readonly [TRet<A>, ...{
[K in keyof R]: TRet<R[K]>;
}] : T extends (infer A)[] ? TRet<A>[] : T extends readonly (infer A)[] ? readonly TRet<A>[] : T extends Promise<infer A> ? Promise<TRet<A>> : T extends object ? {
[K in keyof T]: TRet<T[K]>;
} : T : TypedRet<T>) : never;
/**
* Checks if something is Uint8Array. Be careful: nodejs Buffer will return true.
* @param a - value to test
* @returns `true` when the value is a Uint8Array-compatible view.
* @example
* Check whether a value is a Uint8Array-compatible view.
* ```ts
* isBytes(new Uint8Array([1, 2, 3]));
* ```
*/
export declare function isBytes(a: unknown): a is Uint8Array;
/**
* Asserts something is a non-negative integer.
* @param n - number to validate
* @param title - label included in thrown errors
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @example
* Validate a non-negative integer option.
* ```ts
* anumber(32, 'length');
* ```
*/
export declare function anumber(n: number, title?: string): void;
/**
* Asserts something is Uint8Array.
* @param value - value to validate
* @param length - optional exact length constraint
* @param title - label included in thrown errors
* @returns The validated byte array.
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @example
* Validate that a value is a byte array.
* ```ts
* abytes(new Uint8Array([1, 2, 3]));
* ```
*/
export declare function abytes(value: TArg<Uint8Array>, length?: number, title?: string): TRet<Uint8Array>;
/**
* Copies bytes into a fresh Uint8Array.
* Buffer-style slices can alias the same backing store, so callers that need ownership should copy.
* @param bytes - source bytes to clone
* @returns Freshly allocated copy of `bytes`.
* @throws On wrong argument types. {@link TypeError}
* @example
* Clone a byte array before mutating it.
* ```ts
* const copy = copyBytes(new Uint8Array([1, 2, 3]));
* ```
*/
export declare function copyBytes(bytes: TArg<Uint8Array>): TRet<Uint8Array>;
/**
* Asserts something is a wrapped hash constructor.
* @param h - hash constructor to validate
* @throws On wrong argument types or invalid hash wrapper shape. {@link TypeError}
* @throws On invalid hash metadata ranges or values. {@link RangeError}
* @throws If the hash metadata allows empty outputs or block sizes. {@link Error}
* @example
* Validate a callable hash wrapper.
* ```ts
* import { ahash } from '@noble/hashes/utils.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* ahash(sha256);
* ```
*/
export declare function ahash(h: TArg<CHash>): void;
/**
* Asserts a hash instance has not been destroyed or finished.
* @param instance - hash instance to validate
* @param checkFinished - whether to reject finalized instances
* @throws If the hash instance has already been destroyed or finalized. {@link Error}
* @example
* Validate that a hash instance is still usable.
* ```ts
* import { aexists } from '@noble/hashes/utils.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const hash = sha256.create();
* aexists(hash);
* ```
*/
export declare function aexists(instance: any, checkFinished?: boolean): void;
/**
* Asserts output is a sufficiently-sized byte array.
* @param out - destination buffer
* @param instance - hash instance providing output length
* Oversized buffers are allowed; downstream code only promises to fill the first `outputLen` bytes.
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @example
* Validate a caller-provided digest buffer.
* ```ts
* import { aoutput } from '@noble/hashes/utils.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const hash = sha256.create();
* aoutput(new Uint8Array(hash.outputLen), hash);
* ```
*/
export declare function aoutput(out: any, instance: any): void;
/** Generic type encompassing 8/16/32-byte array views, but not 64-bit variants. */
export type TypedArray = Int8Array | Uint8ClampedArray | Uint8Array | Uint16Array | Int16Array | Uint32Array | Int32Array;
/**
* Casts a typed array view to Uint8Array.
* @param arr - source typed array
* @returns Uint8Array view over the same buffer.
* @example
* Reinterpret a typed array as bytes.
* ```ts
* u8(new Uint32Array([1, 2]));
* ```
*/
export declare function u8(arr: TArg<TypedArray>): TRet<Uint8Array>;
/**
* Casts a typed array view to Uint32Array.
* `arr.byteOffset` must already be 4-byte aligned or the platform
* Uint32Array constructor will throw.
* @param arr - source typed array
* @returns Uint32Array view over the same buffer.
* @example
* Reinterpret a byte array as 32-bit words.
* ```ts
* u32(new Uint8Array(8));
* ```
*/
export declare function u32(arr: TArg<TypedArray>): TRet<Uint32Array>;
/**
* Zeroizes typed arrays in place. Warning: JS provides no guarantees.
* @param arrays - arrays to overwrite with zeros
* @example
* Zeroize sensitive buffers in place.
* ```ts
* clean(new Uint8Array([1, 2, 3]));
* ```
*/
export declare function clean(...arrays: TArg<TypedArray[]>): void;
/**
* Creates a DataView for byte-level manipulation.
* @param arr - source typed array
* @returns DataView over the same buffer region.
* @example
* Create a DataView over an existing buffer.
* ```ts
* createView(new Uint8Array(4));
* ```
*/
export declare function createView(arr: TArg<TypedArray>): DataView;
/**
* Rotate-right operation for uint32 values.
* @param word - source word
* @param shift - shift amount in bits
* @returns Rotated word.
* @example
* Rotate a 32-bit word to the right.
* ```ts
* rotr(0x12345678, 8);
* ```
*/
export declare function rotr(word: number, shift: number): number;
/**
* Rotate-left operation for uint32 values.
* @param word - source word
* @param shift - shift amount in bits
* @returns Rotated word.
* @example
* Rotate a 32-bit word to the left.
* ```ts
* rotl(0x12345678, 8);
* ```
*/
export declare function rotl(word: number, shift: number): number;
/** Whether the current platform is little-endian. */
export declare const isLE: boolean;
/**
* Byte-swap operation for uint32 values.
* @param word - source word
* @returns Word with reversed byte order.
* @example
* Reverse the byte order of a 32-bit word.
* ```ts
* byteSwap(0x11223344);
* ```
*/
export declare function byteSwap(word: number): number;
/**
* Conditionally byte-swaps one 32-bit word on big-endian platforms.
* @param n - source word
* @returns Original or byte-swapped word depending on platform endianness.
* @example
* Normalize a 32-bit word for host endianness.
* ```ts
* swap8IfBE(0x11223344);
* ```
*/
export declare const swap8IfBE: (n: number) => number;
/**
* Byte-swaps every word of a Uint32Array in place.
* @param arr - array to mutate
* @returns The same array after mutation; callers pass live state arrays here.
* @example
* Reverse the byte order of every word in place.
* ```ts
* byteSwap32(new Uint32Array([0x11223344]));
* ```
*/
export declare function byteSwap32(arr: TArg<Uint32Array>): TRet<Uint32Array>;
/**
* Conditionally byte-swaps a Uint32Array on big-endian platforms.
* @param u - array to normalize for host endianness
* @returns Original or byte-swapped array depending on platform endianness.
* On big-endian runtimes this mutates `u` in place via `byteSwap32(...)`.
* @example
* Normalize a word array for host endianness.
* ```ts
* swap32IfBE(new Uint32Array([0x11223344]));
* ```
*/
export declare const swap32IfBE: (u: TArg<Uint32Array>) => TRet<Uint32Array>;
/**
* Convert byte array to hex string.
* Uses the built-in function when available and assumes it matches the tested
* fallback semantics.
* @param bytes - bytes to encode
* @returns Lowercase hexadecimal string.
* @throws On wrong argument types. {@link TypeError}
* @example
* Convert bytes to lowercase hexadecimal.
* ```ts
* bytesToHex(Uint8Array.from([0xca, 0xfe, 0x01, 0x23])); // 'cafe0123'
* ```
*/
export declare function bytesToHex(bytes: TArg<Uint8Array>): string;
/**
* Convert hex string to byte array. Uses built-in function, when available.
* @param hex - hexadecimal string to decode
* @returns Decoded bytes.
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @example
* Decode lowercase hexadecimal into bytes.
* ```ts
* hexToBytes('cafe0123'); // Uint8Array.from([0xca, 0xfe, 0x01, 0x23])
* ```
*/
export declare function hexToBytes(hex: string): TRet<Uint8Array>;
/**
* There is no setImmediate in browser and setTimeout is slow.
* This yields to the Promise/microtask scheduler queue, not to timers or the
* full macrotask event loop.
* @example
* Yield to the next scheduler tick.
* ```ts
* await nextTick();
* ```
*/
export declare const nextTick: () => Promise<void>;
/**
* Returns control to the Promise/microtask scheduler every `tick`
* milliseconds to avoid blocking long loops.
* @param iters - number of loop iterations to run
* @param tick - maximum time slice in milliseconds
* @param cb - callback executed on each iteration
* @example
* Run a loop that periodically yields back to the event loop.
* ```ts
* await asyncLoop(2, 0, () => {});
* ```
*/
export declare function asyncLoop(iters: number, tick: number, cb: (i: number) => void): Promise<void>;
/**
* Converts string to bytes using UTF8 encoding.
* Built-in doesn't validate input to be string: we do the check.
* Non-ASCII details are delegated to the platform `TextEncoder`.
* @param str - string to encode
* @returns UTF-8 encoded bytes.
* @throws On wrong argument types. {@link TypeError}
* @example
* Encode a string as UTF-8 bytes.
* ```ts
* utf8ToBytes('abc'); // Uint8Array.from([97, 98, 99])
* ```
*/
export declare function utf8ToBytes(str: string): TRet<Uint8Array>;
/** KDFs can accept string or Uint8Array for user convenience. */
export type KDFInput = string | Uint8Array;
/**
* Helper for KDFs: consumes Uint8Array or string.
* String inputs are UTF-8 encoded; byte-array inputs stay aliased to the caller buffer.
* @param data - user-provided KDF input
* @param errorTitle - label included in thrown errors
* @returns Byte representation of the input.
* @throws On wrong argument types. {@link TypeError}
* @example
* Normalize KDF input to bytes.
* ```ts
* kdfInputToBytes('password');
* ```
*/
export declare function kdfInputToBytes(data: TArg<KDFInput>, errorTitle?: string): TRet<Uint8Array>;
/**
* Copies several Uint8Arrays into one.
* @param arrays - arrays to concatenate
* @returns Concatenated byte array.
* @throws On wrong argument types. {@link TypeError}
* @example
* Concatenate multiple byte arrays.
* ```ts
* concatBytes(new Uint8Array([1]), new Uint8Array([2]));
* ```
*/
export declare function concatBytes(...arrays: TArg<Uint8Array[]>): TRet<Uint8Array>;
type EmptyObj = {};
/**
* Merges default options and passed options.
* @param defaults - base option object
* @param opts - user overrides
* @returns Merged option object. The merge mutates `defaults` in place.
* @throws On wrong argument types. {@link TypeError}
* @example
* Merge user overrides onto default options.
* ```ts
* checkOpts({ dkLen: 32 }, { asyncTick: 10 });
* ```
*/
export declare function checkOpts<T1 extends EmptyObj, T2 extends EmptyObj>(defaults: T1, opts?: T2): T1 & T2;
/** Common interface for all hash instances. */
export interface Hash<T> {
/** Bytes processed per compression block. */
blockLen: number;
/** Bytes produced by `digest()`. */
outputLen: number;
/** Whether the instance supports XOF-style variable-length output via `xof()` / `xofInto()`. */
canXOF: boolean;
/**
* Absorbs more message bytes into the running hash state.
* @param buf - message chunk to absorb
* @returns The same hash instance for chaining.
*/
update(buf: TArg<Uint8Array>): this;
/**
* Finalizes the hash into a caller-provided buffer.
* @param buf - destination buffer
* @returns Nothing. Implementations write into `buf` in place.
*/
digestInto(buf: TArg<Uint8Array>): void;
/**
* Finalizes the hash and returns a freshly allocated digest.
* @returns Digest bytes.
*/
digest(): TRet<Uint8Array>;
/** Wipes internal state and makes the instance unusable. */
destroy(): void;
/**
* Copies the current hash state into an existing or new instance.
* @param to - Optional destination instance to reuse.
* @returns Cloned hash state.
*/
_cloneInto(to?: T): T;
/**
* Creates an independent copy of the current hash state.
* @returns Cloned hash instance.
*/
clone(): T;
}
/** Pseudorandom generator interface. */
export interface PRG {
/**
* Mixes more entropy into the generator state.
* @param seed - fresh entropy bytes
* @returns Nothing. Implementations update internal state in place.
*/
addEntropy(seed: TArg<Uint8Array>): void;
/**
* Generates pseudorandom output bytes.
* @param length - number of bytes to generate
* @returns Generated pseudorandom bytes.
*/
randomBytes(length: number): TRet<Uint8Array>;
/** Wipes generator state and makes the instance unusable. */
clean(): void;
}
/**
* XOF: streaming API to read digest in chunks.
* Same as 'squeeze' in keccak/k12 and 'seek' in blake3, but more generic name.
* When hash used in XOF mode it is up to user to call '.destroy' afterwards, since we cannot
* destroy state, next call can require more bytes.
*/
export type HashXOF<T extends Hash<T>> = Hash<T> & {
/**
* Reads more bytes from the XOF stream.
* @param bytes - number of bytes to read
* @returns Requested digest bytes.
*/
xof(bytes: number): TRet<Uint8Array>;
/**
* Reads more bytes from the XOF stream into a caller-provided buffer.
* @param buf - destination buffer
* @returns Filled output buffer.
*/
xofInto(buf: TArg<Uint8Array>): TRet<Uint8Array>;
};
/** Hash constructor or factory type. */
export type HasherCons<T, Opts = undefined> = Opts extends undefined ? () => T : (opts?: Opts) => T;
/** Optional hash metadata. */
export type HashInfo = {
/** DER-encoded object identifier bytes for the hash algorithm. */
oid?: TRet<Uint8Array>;
};
/** Callable hash function type. */
export type CHash<T extends Hash<T> = Hash<any>, Opts = undefined> = {
/** Digest size in bytes. */
outputLen: number;
/** Input block size in bytes. */
blockLen: number;
/** Whether `.create()` returns a hash instance that can be used as an XOF stream. */
canXOF: boolean;
} & HashInfo & (Opts extends undefined ? {
(msg: TArg<Uint8Array>): TRet<Uint8Array>;
create(): T;
} : {
(msg: TArg<Uint8Array>, opts?: TArg<Opts>): TRet<Uint8Array>;
create(opts?: Opts): T;
});
/** Callable extendable-output hash function type. */
export type CHashXOF<T extends HashXOF<T> = HashXOF<any>, Opts = undefined> = CHash<T, Opts>;
/**
* Creates a callable hash function from a stateful class constructor.
* @param hashCons - hash constructor or factory
* @param info - optional metadata such as DER OID
* @returns Frozen callable hash wrapper with `.create()`.
* Wrapper construction eagerly calls `hashCons(undefined)` once to read
* `outputLen` / `blockLen`, so constructor side effects happen at module
* init time.
* @example
* Wrap a stateful hash constructor into a callable helper.
* ```ts
* import { createHasher } from '@noble/hashes/utils.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const wrapped = createHasher(sha256.create, { oid: sha256.oid });
* wrapped(new Uint8Array([1]));
* ```
*/
export declare function createHasher<T extends Hash<T>, Opts = undefined>(hashCons: HasherCons<T, Opts>, info?: TArg<HashInfo>): TRet<CHash<T, Opts>>;
/**
* Cryptographically secure PRNG backed by `crypto.getRandomValues`.
* @param bytesLength - number of random bytes to generate
* @returns Random bytes.
* The platform `getRandomValues()` implementation still defines any
* single-call length cap, and this helper rejects oversize requests
* with a stable library `RangeError` instead of host-specific errors.
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @throws If the current runtime does not provide `crypto.getRandomValues`. {@link Error}
* @example
* Generate a fresh random key or nonce.
* ```ts
* const key = randomBytes(16);
* ```
*/
export declare function randomBytes(bytesLength?: number): TRet<Uint8Array>;
/**
* Creates OID metadata for NIST hashes with prefix `06 09 60 86 48 01 65 03 04 02`.
* @param suffix - final OID byte for the selected hash.
* The helper accepts any byte even though only the documented NIST hash
* suffixes are meaningful downstream.
* @returns Object containing the DER-encoded OID.
* @example
* Build OID metadata for a NIST hash.
* ```ts
* oidNist(0x01);
* ```
*/
export declare const oidNist: (suffix: number) => TRet<Required<HashInfo>>;
export {};
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/**
* Checks if something is Uint8Array. Be careful: nodejs Buffer will return true.
* @param a - value to test
* @returns `true` when the value is a Uint8Array-compatible view.
* @example
* Check whether a value is a Uint8Array-compatible view.
* ```ts
* isBytes(new Uint8Array([1, 2, 3]));
* ```
*/
export function isBytes(a) {
// Plain `instanceof Uint8Array` is too strict for some Buffer / proxy / cross-realm cases.
// The fallback still requires a real ArrayBuffer view, so plain
// JSON-deserialized `{ constructor: ... }` spoofing is rejected, and
// `BYTES_PER_ELEMENT === 1` keeps the fallback on byte-oriented views.
return (a instanceof Uint8Array ||
(ArrayBuffer.isView(a) &&
a.constructor.name === 'Uint8Array' &&
'BYTES_PER_ELEMENT' in a &&
a.BYTES_PER_ELEMENT === 1));
}
/**
* Asserts something is a non-negative integer.
* @param n - number to validate
* @param title - label included in thrown errors
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @example
* Validate a non-negative integer option.
* ```ts
* anumber(32, 'length');
* ```
*/
export function anumber(n, title = '') {
if (typeof n !== 'number') {
const prefix = title && `"${title}" `;
throw new TypeError(`${prefix}expected number, got ${typeof n}`);
}
if (!Number.isSafeInteger(n) || n < 0) {
const prefix = title && `"${title}" `;
throw new RangeError(`${prefix}expected integer >= 0, got ${n}`);
}
}
/**
* Asserts something is Uint8Array.
* @param value - value to validate
* @param length - optional exact length constraint
* @param title - label included in thrown errors
* @returns The validated byte array.
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @example
* Validate that a value is a byte array.
* ```ts
* abytes(new Uint8Array([1, 2, 3]));
* ```
*/
export function abytes(value, length, title = '') {
const bytes = isBytes(value);
const len = value?.length;
const needsLen = length !== undefined;
if (!bytes || (needsLen && len !== length)) {
const prefix = title && `"${title}" `;
const ofLen = needsLen ? ` of length ${length}` : '';
const got = bytes ? `length=${len}` : `type=${typeof value}`;
const message = prefix + 'expected Uint8Array' + ofLen + ', got ' + got;
if (!bytes)
throw new TypeError(message);
throw new RangeError(message);
}
return value;
}
/**
* Copies bytes into a fresh Uint8Array.
* Buffer-style slices can alias the same backing store, so callers that need ownership should copy.
* @param bytes - source bytes to clone
* @returns Freshly allocated copy of `bytes`.
* @throws On wrong argument types. {@link TypeError}
* @example
* Clone a byte array before mutating it.
* ```ts
* const copy = copyBytes(new Uint8Array([1, 2, 3]));
* ```
*/
export function copyBytes(bytes) {
// `Uint8Array.from(...)` would also accept arrays / other typed arrays. Keep this helper strict
// because callers use it at byte-validation boundaries before mutating the detached copy.
return Uint8Array.from(abytes(bytes));
}
/**
* Asserts something is a wrapped hash constructor.
* @param h - hash constructor to validate
* @throws On wrong argument types or invalid hash wrapper shape. {@link TypeError}
* @throws On invalid hash metadata ranges or values. {@link RangeError}
* @throws If the hash metadata allows empty outputs or block sizes. {@link Error}
* @example
* Validate a callable hash wrapper.
* ```ts
* import { ahash } from '@noble/hashes/utils.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* ahash(sha256);
* ```
*/
export function ahash(h) {
if (typeof h !== 'function' || typeof h.create !== 'function')
throw new TypeError('Hash must wrapped by utils.createHasher');
anumber(h.outputLen);
anumber(h.blockLen);
// HMAC and KDF callers treat these as real byte lengths; allowing zero lets fake wrappers pass
// validation and can produce empty outputs instead of failing fast.
if (h.outputLen < 1)
throw new Error('"outputLen" must be >= 1');
if (h.blockLen < 1)
throw new Error('"blockLen" must be >= 1');
}
/**
* Asserts a hash instance has not been destroyed or finished.
* @param instance - hash instance to validate
* @param checkFinished - whether to reject finalized instances
* @throws If the hash instance has already been destroyed or finalized. {@link Error}
* @example
* Validate that a hash instance is still usable.
* ```ts
* import { aexists } from '@noble/hashes/utils.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const hash = sha256.create();
* aexists(hash);
* ```
*/
export function aexists(instance, checkFinished = true) {
if (instance.destroyed)
throw new Error('Hash instance has been destroyed');
if (checkFinished && instance.finished)
throw new Error('Hash#digest() has already been called');
}
/**
* Asserts output is a sufficiently-sized byte array.
* @param out - destination buffer
* @param instance - hash instance providing output length
* Oversized buffers are allowed; downstream code only promises to fill the first `outputLen` bytes.
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @example
* Validate a caller-provided digest buffer.
* ```ts
* import { aoutput } from '@noble/hashes/utils.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const hash = sha256.create();
* aoutput(new Uint8Array(hash.outputLen), hash);
* ```
*/
export function aoutput(out, instance) {
abytes(out, undefined, 'digestInto() output');
const min = instance.outputLen;
if (out.length < min) {
throw new RangeError('"digestInto() output" expected to be of length >=' + min);
}
}
/**
* Casts a typed array view to Uint8Array.
* @param arr - source typed array
* @returns Uint8Array view over the same buffer.
* @example
* Reinterpret a typed array as bytes.
* ```ts
* u8(new Uint32Array([1, 2]));
* ```
*/
export function u8(arr) {
return new Uint8Array(arr.buffer, arr.byteOffset, arr.byteLength);
}
/**
* Casts a typed array view to Uint32Array.
* `arr.byteOffset` must already be 4-byte aligned or the platform
* Uint32Array constructor will throw.
* @param arr - source typed array
* @returns Uint32Array view over the same buffer.
* @example
* Reinterpret a byte array as 32-bit words.
* ```ts
* u32(new Uint8Array(8));
* ```
*/
export function u32(arr) {
return new Uint32Array(arr.buffer, arr.byteOffset, Math.floor(arr.byteLength / 4));
}
/**
* Zeroizes typed arrays in place. Warning: JS provides no guarantees.
* @param arrays - arrays to overwrite with zeros
* @example
* Zeroize sensitive buffers in place.
* ```ts
* clean(new Uint8Array([1, 2, 3]));
* ```
*/
export function clean(...arrays) {
for (let i = 0; i < arrays.length; i++) {
arrays[i].fill(0);
}
}
/**
* Creates a DataView for byte-level manipulation.
* @param arr - source typed array
* @returns DataView over the same buffer region.
* @example
* Create a DataView over an existing buffer.
* ```ts
* createView(new Uint8Array(4));
* ```
*/
export function createView(arr) {
return new DataView(arr.buffer, arr.byteOffset, arr.byteLength);
}
/**
* Rotate-right operation for uint32 values.
* @param word - source word
* @param shift - shift amount in bits
* @returns Rotated word.
* @example
* Rotate a 32-bit word to the right.
* ```ts
* rotr(0x12345678, 8);
* ```
*/
export function rotr(word, shift) {
return (word << (32 - shift)) | (word >>> shift);
}
/**
* Rotate-left operation for uint32 values.
* @param word - source word
* @param shift - shift amount in bits
* @returns Rotated word.
* @example
* Rotate a 32-bit word to the left.
* ```ts
* rotl(0x12345678, 8);
* ```
*/
export function rotl(word, shift) {
return (word << shift) | ((word >>> (32 - shift)) >>> 0);
}
/** Whether the current platform is little-endian. */
export const isLE = /* @__PURE__ */ (() => new Uint8Array(new Uint32Array([0x11223344]).buffer)[0] === 0x44)();
/**
* Byte-swap operation for uint32 values.
* @param word - source word
* @returns Word with reversed byte order.
* @example
* Reverse the byte order of a 32-bit word.
* ```ts
* byteSwap(0x11223344);
* ```
*/
export function byteSwap(word) {
return (((word << 24) & 0xff000000) |
((word << 8) & 0xff0000) |
((word >>> 8) & 0xff00) |
((word >>> 24) & 0xff));
}
/**
* Conditionally byte-swaps one 32-bit word on big-endian platforms.
* @param n - source word
* @returns Original or byte-swapped word depending on platform endianness.
* @example
* Normalize a 32-bit word for host endianness.
* ```ts
* swap8IfBE(0x11223344);
* ```
*/
export const swap8IfBE = isLE
? (n) => n
: (n) => byteSwap(n) >>> 0;
/**
* Byte-swaps every word of a Uint32Array in place.
* @param arr - array to mutate
* @returns The same array after mutation; callers pass live state arrays here.
* @example
* Reverse the byte order of every word in place.
* ```ts
* byteSwap32(new Uint32Array([0x11223344]));
* ```
*/
export function byteSwap32(arr) {
for (let i = 0; i < arr.length; i++) {
arr[i] = byteSwap(arr[i]);
}
return arr;
}
/**
* Conditionally byte-swaps a Uint32Array on big-endian platforms.
* @param u - array to normalize for host endianness
* @returns Original or byte-swapped array depending on platform endianness.
* On big-endian runtimes this mutates `u` in place via `byteSwap32(...)`.
* @example
* Normalize a word array for host endianness.
* ```ts
* swap32IfBE(new Uint32Array([0x11223344]));
* ```
*/
export const swap32IfBE = isLE
? (u) => u
: byteSwap32;
// Built-in hex conversion https://caniuse.com/mdn-javascript_builtins_uint8array_fromhex
const hasHexBuiltin = /* @__PURE__ */ (() =>
// @ts-ignore
typeof Uint8Array.from([]).toHex === 'function' && typeof Uint8Array.fromHex === 'function')();
// Array where index 0xf0 (240) is mapped to string 'f0'
const hexes = /* @__PURE__ */ Array.from({ length: 256 }, (_, i) => i.toString(16).padStart(2, '0'));
/**
* Convert byte array to hex string.
* Uses the built-in function when available and assumes it matches the tested
* fallback semantics.
* @param bytes - bytes to encode
* @returns Lowercase hexadecimal string.
* @throws On wrong argument types. {@link TypeError}
* @example
* Convert bytes to lowercase hexadecimal.
* ```ts
* bytesToHex(Uint8Array.from([0xca, 0xfe, 0x01, 0x23])); // 'cafe0123'
* ```
*/
export function bytesToHex(bytes) {
abytes(bytes);
// @ts-ignore
if (hasHexBuiltin)
return bytes.toHex();
// pre-caching improves the speed 6x
let hex = '';
for (let i = 0; i < bytes.length; i++) {
hex += hexes[bytes[i]];
}
return hex;
}
// We use optimized technique to convert hex string to byte array
const asciis = { _0: 48, _9: 57, A: 65, F: 70, a: 97, f: 102 };
function asciiToBase16(ch) {
if (ch >= asciis._0 && ch <= asciis._9)
return ch - asciis._0; // '2' => 50-48
if (ch >= asciis.A && ch <= asciis.F)
return ch - (asciis.A - 10); // 'B' => 66-(65-10)
if (ch >= asciis.a && ch <= asciis.f)
return ch - (asciis.a - 10); // 'b' => 98-(97-10)
return;
}
/**
* Convert hex string to byte array. Uses built-in function, when available.
* @param hex - hexadecimal string to decode
* @returns Decoded bytes.
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @example
* Decode lowercase hexadecimal into bytes.
* ```ts
* hexToBytes('cafe0123'); // Uint8Array.from([0xca, 0xfe, 0x01, 0x23])
* ```
*/
export function hexToBytes(hex) {
if (typeof hex !== 'string')
throw new TypeError('hex string expected, got ' + typeof hex);
if (hasHexBuiltin) {
try {
return Uint8Array.fromHex(hex);
}
catch (error) {
if (error instanceof SyntaxError)
throw new RangeError(error.message);
throw error;
}
}
const hl = hex.length;
const al = hl / 2;
if (hl % 2)
throw new RangeError('hex string expected, got unpadded hex of length ' + hl);
const array = new Uint8Array(al);
for (let ai = 0, hi = 0; ai < al; ai++, hi += 2) {
const n1 = asciiToBase16(hex.charCodeAt(hi));
const n2 = asciiToBase16(hex.charCodeAt(hi + 1));
if (n1 === undefined || n2 === undefined) {
const char = hex[hi] + hex[hi + 1];
throw new RangeError('hex string expected, got non-hex character "' + char + '" at index ' + hi);
}
array[ai] = n1 * 16 + n2; // multiply first octet, e.g. 'a3' => 10*16+3 => 160 + 3 => 163
}
return array;
}
/**
* There is no setImmediate in browser and setTimeout is slow.
* This yields to the Promise/microtask scheduler queue, not to timers or the
* full macrotask event loop.
* @example
* Yield to the next scheduler tick.
* ```ts
* await nextTick();
* ```
*/
export const nextTick = async () => { };
/**
* Returns control to the Promise/microtask scheduler every `tick`
* milliseconds to avoid blocking long loops.
* @param iters - number of loop iterations to run
* @param tick - maximum time slice in milliseconds
* @param cb - callback executed on each iteration
* @example
* Run a loop that periodically yields back to the event loop.
* ```ts
* await asyncLoop(2, 0, () => {});
* ```
*/
export async function asyncLoop(iters, tick, cb) {
let ts = Date.now();
for (let i = 0; i < iters; i++) {
cb(i);
// Date.now() is not monotonic, so in case if clock goes backwards we return return control too
const diff = Date.now() - ts;
if (diff >= 0 && diff < tick)
continue;
await nextTick();
ts += diff;
}
}
/**
* Converts string to bytes using UTF8 encoding.
* Built-in doesn't validate input to be string: we do the check.
* Non-ASCII details are delegated to the platform `TextEncoder`.
* @param str - string to encode
* @returns UTF-8 encoded bytes.
* @throws On wrong argument types. {@link TypeError}
* @example
* Encode a string as UTF-8 bytes.
* ```ts
* utf8ToBytes('abc'); // Uint8Array.from([97, 98, 99])
* ```
*/
export function utf8ToBytes(str) {
if (typeof str !== 'string')
throw new TypeError('string expected');
return new Uint8Array(new TextEncoder().encode(str)); // https://bugzil.la/1681809
}
/**
* Helper for KDFs: consumes Uint8Array or string.
* String inputs are UTF-8 encoded; byte-array inputs stay aliased to the caller buffer.
* @param data - user-provided KDF input
* @param errorTitle - label included in thrown errors
* @returns Byte representation of the input.
* @throws On wrong argument types. {@link TypeError}
* @example
* Normalize KDF input to bytes.
* ```ts
* kdfInputToBytes('password');
* ```
*/
export function kdfInputToBytes(data, errorTitle = '') {
if (typeof data === 'string')
return utf8ToBytes(data);
return abytes(data, undefined, errorTitle);
}
/**
* Copies several Uint8Arrays into one.
* @param arrays - arrays to concatenate
* @returns Concatenated byte array.
* @throws On wrong argument types. {@link TypeError}
* @example
* Concatenate multiple byte arrays.
* ```ts
* concatBytes(new Uint8Array([1]), new Uint8Array([2]));
* ```
*/
export function concatBytes(...arrays) {
let sum = 0;
for (let i = 0; i < arrays.length; i++) {
const a = arrays[i];
abytes(a);
sum += a.length;
}
const res = new Uint8Array(sum);
for (let i = 0, pad = 0; i < arrays.length; i++) {
const a = arrays[i];
res.set(a, pad);
pad += a.length;
}
return res;
}
/**
* Merges default options and passed options.
* @param defaults - base option object
* @param opts - user overrides
* @returns Merged option object. The merge mutates `defaults` in place.
* @throws On wrong argument types. {@link TypeError}
* @example
* Merge user overrides onto default options.
* ```ts
* checkOpts({ dkLen: 32 }, { asyncTick: 10 });
* ```
*/
export function checkOpts(defaults, opts) {
if (opts !== undefined && {}.toString.call(opts) !== '[object Object]')
throw new TypeError('options must be object or undefined');
const merged = Object.assign(defaults, opts);
return merged;
}
/**
* Creates a callable hash function from a stateful class constructor.
* @param hashCons - hash constructor or factory
* @param info - optional metadata such as DER OID
* @returns Frozen callable hash wrapper with `.create()`.
* Wrapper construction eagerly calls `hashCons(undefined)` once to read
* `outputLen` / `blockLen`, so constructor side effects happen at module
* init time.
* @example
* Wrap a stateful hash constructor into a callable helper.
* ```ts
* import { createHasher } from '@noble/hashes/utils.js';
* import { sha256 } from '@noble/hashes/sha2.js';
* const wrapped = createHasher(sha256.create, { oid: sha256.oid });
* wrapped(new Uint8Array([1]));
* ```
*/
export function createHasher(hashCons, info = {}) {
const hashC = (msg, opts) => hashCons(opts)
.update(msg)
.digest();
const tmp = hashCons(undefined);
hashC.outputLen = tmp.outputLen;
hashC.blockLen = tmp.blockLen;
hashC.canXOF = tmp.canXOF;
hashC.create = (opts) => hashCons(opts);
Object.assign(hashC, info);
return Object.freeze(hashC);
}
/**
* Cryptographically secure PRNG backed by `crypto.getRandomValues`.
* @param bytesLength - number of random bytes to generate
* @returns Random bytes.
* The platform `getRandomValues()` implementation still defines any
* single-call length cap, and this helper rejects oversize requests
* with a stable library `RangeError` instead of host-specific errors.
* @throws On wrong argument types. {@link TypeError}
* @throws On wrong argument ranges or values. {@link RangeError}
* @throws If the current runtime does not provide `crypto.getRandomValues`. {@link Error}
* @example
* Generate a fresh random key or nonce.
* ```ts
* const key = randomBytes(16);
* ```
*/
export function randomBytes(bytesLength = 32) {
// Match the repo's other length-taking helpers instead of relying on Uint8Array coercion.
anumber(bytesLength, 'bytesLength');
const cr = typeof globalThis === 'object' ? globalThis.crypto : null;
if (typeof cr?.getRandomValues !== 'function')
throw new Error('crypto.getRandomValues must be defined');
// Web Cryptography API Level 2 §10.1.1:
// if `byteLength > 65536`, throw `QuotaExceededError`.
// Keep the guard explicit so callers can see the quota in code
// instead of discovering it by reading the spec or host errors.
// This wrapper surfaces the same quota as a stable library RangeError.
if (bytesLength > 65536)
throw new RangeError(`"bytesLength" expected <= 65536, got ${bytesLength}`);
return cr.getRandomValues(new Uint8Array(bytesLength));
}
/**
* Creates OID metadata for NIST hashes with prefix `06 09 60 86 48 01 65 03 04 02`.
* @param suffix - final OID byte for the selected hash.
* The helper accepts any byte even though only the documented NIST hash
* suffixes are meaningful downstream.
* @returns Object containing the DER-encoded OID.
* @example
* Build OID metadata for a NIST hash.
* ```ts
* oidNist(0x01);
* ```
*/
export const oidNist = (suffix) => ({
// Current NIST hashAlgs suffixes used here fit in one DER subidentifier octet.
// Larger suffix values would need base-128 OID encoding and a different length byte.
oid: Uint8Array.from([0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, suffix]),
});
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import { type Pbkdf2Opt } from './pbkdf2.ts';
import { type KDFInput, type TArg, type TRet } from './utils.ts';
/** Callable WebCrypto hash function descriptor. */
export type WebHash = {
/**
* Hashes one message with the selected WebCrypto digest.
* @param msg - message bytes to hash
* @returns Promise resolving to digest bytes.
*/
(msg: TArg<Uint8Array>): Promise<TRet<Uint8Array>>;
/** WebCrypto algorithm name passed to `crypto.subtle`. */
webCryptoName: string;
/** Digest size in bytes. */
outputLen: number;
/** Input block size in bytes. */
blockLen: number;
};
/** WebCrypto SHA1 (RFC 3174) legacy hash function. It was cryptographically broken. */
/**
* WebCrypto SHA2-256 hash function from RFC 6234.
* @param msg - message bytes to hash
* @returns Promise resolving to digest bytes.
* @example
* Hash a message with WebCrypto SHA2-256.
* ```ts
* await sha256(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const sha256: TRet<WebHash>;
/**
* WebCrypto SHA2-384 hash function from RFC 6234.
* @param msg - message bytes to hash
* @returns Promise resolving to digest bytes.
* @example
* Hash a message with WebCrypto SHA2-384.
* ```ts
* await sha384(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const sha384: TRet<WebHash>;
/**
* WebCrypto SHA2-512 hash function from RFC 6234.
* @param msg - message bytes to hash
* @returns Promise resolving to digest bytes.
* @example
* Hash a message with WebCrypto SHA2-512.
* ```ts
* await sha512(new Uint8Array([97, 98, 99]));
* ```
*/
export declare const sha512: TRet<WebHash>;
/**
* WebCrypto HMAC: RFC2104 message authentication code.
* @param hash - function that would be used e.g. sha256. Webcrypto version.
* @param key - authentication key bytes
* @param message - message bytes to authenticate
* @returns Promise resolving to authentication tag bytes.
* `.create()` exists only to mirror the synchronous API surface
* and always throws `not implemented`.
* @example
* Compute an RFC 2104 HMAC with WebCrypto.
* ```ts
* import { hmac, sha256 } from '@noble/hashes/webcrypto.js';
* await hmac(sha256, new Uint8Array([1, 2, 3]), new Uint8Array([4, 5, 6]));
* ```
*/
type WebHmacFn = {
(hash: TArg<WebHash>, key: TArg<Uint8Array>, message: TArg<Uint8Array>): Promise<TRet<Uint8Array>>;
create(hash: TArg<WebHash>, key: TArg<Uint8Array>): any;
};
export declare const hmac: TRet<WebHmacFn>;
/**
* WebCrypto HKDF (RFC 5869): derive keys from an initial input.
* Combines hkdf_extract + hkdf_expand in one step
* @param hash - hash function that would be used (e.g. sha256). Webcrypto version.
* @param ikm - input keying material, the initial key
* @param salt - optional salt value (a non-secret random value)
* @param info - optional context and application specific information bytes
* @param length - length of output keying material in bytes.
* RFC 5869 §2.3 allows `0..255*HashLen`, so `0` requests an empty OKM.
* @returns Promise resolving to derived key bytes.
* The RFC `L <= 255 * HashLen` bound is currently enforced only by backend
* `deriveBits()` rejection, not by an explicit library-side guard.
* @throws If the current runtime does not provide `crypto.subtle`. {@link Error}
* @example
* WebCrypto HKDF (RFC 5869): derive keys from an initial input.
* ```ts
* import { hkdf, sha256 } from '@noble/hashes/webcrypto.js';
* import { randomBytes, utf8ToBytes } from '@noble/hashes/utils.js';
* const inputKey = randomBytes(32);
* const salt = randomBytes(32);
* const info = utf8ToBytes('application-key');
* const okm = await hkdf(sha256, inputKey, salt, info, 32);
* ```
*/
export declare function hkdf(hash: TArg<WebHash>, ikm: TArg<Uint8Array>, salt: TArg<Uint8Array | undefined>, info: TArg<Uint8Array | undefined>, length: number): Promise<TRet<Uint8Array>>;
/**
* WebCrypto PBKDF2-HMAC: RFC 8018 key derivation function.
* @param hash - hash function that would be used e.g. sha256. Webcrypto version.
* @param password - password from which a derived key is generated; string
* inputs are normalized through `kdfInputToBytes()`, i.e. UTF-8
* @param salt - cryptographic salt; string inputs are normalized through
* `kdfInputToBytes()`, i.e. UTF-8
* @param opts - PBKDF2 work factor and output settings. `dkLen`, if provided,
* must be `>= 1` per RFC 8018 §5.2. See {@link Pbkdf2Opt}.
* @returns Promise resolving to derived key bytes.
* Positive-iteration enforcement is currently delegated to backend
* `deriveBits()` rejection (for example `c = 0`), not a dedicated
* library-side guard.
* @throws If the current runtime does not provide `crypto.subtle`. {@link Error}
* @example
* WebCrypto PBKDF2-HMAC: RFC 2898 key derivation function.
* ```ts
* import { pbkdf2, sha256 } from '@noble/hashes/webcrypto.js';
* const key = await pbkdf2(sha256, 'password', 'salt', { dkLen: 32, c: Math.pow(2, 18) });
* ```
*/
export declare function pbkdf2(hash: TArg<WebHash>, password: TArg<KDFInput>, salt: TArg<KDFInput>, opts: Pbkdf2Opt): Promise<TRet<Uint8Array>>;
export {};
//# sourceMappingURL=webcrypto.d.ts.map

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import {} from "./pbkdf2.js";
import { abytes, ahash, anumber, checkOpts, kdfInputToBytes, } from "./utils.js";
function _subtle() {
const cr = typeof globalThis === 'object' ? globalThis.crypto : null;
const sb = cr?.subtle;
if (typeof sb === 'object' && sb != null)
return sb;
throw new Error('crypto.subtle must be defined');
}
function createWebHash(name, blockLen, outputLen) {
const hashC = async (msg) => {
abytes(msg);
const crypto = _subtle();
return new Uint8Array(await crypto.digest(name, msg));
};
hashC.webCryptoName = name; // make sure it won't interfere with function name
hashC.outputLen = outputLen;
hashC.blockLen = blockLen;
hashC.create = () => {
// Present only so this async wrapper satisfies the shared
// hash-wrapper shape checked by `ahashWeb()`.
throw new Error('not implemented');
};
// Later WebCrypto HMAC/HKDF/PBKDF2 calls read descriptor metadata directly, so freezing prevents
// callers from retargeting a `sha256` wrapper into a different backend digest by mutation.
return Object.freeze(hashC);
}
function ahashWeb(hash) {
ahash(hash);
if (typeof hash.webCryptoName !== 'string')
throw new Error('non-web hash');
}
/** WebCrypto SHA1 (RFC 3174) legacy hash function. It was cryptographically broken. */
// export const sha1: WebHash = createHash('SHA-1', 64, 20);
/**
* WebCrypto SHA2-256 hash function from RFC 6234.
* @param msg - message bytes to hash
* @returns Promise resolving to digest bytes.
* @example
* Hash a message with WebCrypto SHA2-256.
* ```ts
* await sha256(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha256 = /* @__PURE__ */ createWebHash('SHA-256', 64, 32);
/**
* WebCrypto SHA2-384 hash function from RFC 6234.
* @param msg - message bytes to hash
* @returns Promise resolving to digest bytes.
* @example
* Hash a message with WebCrypto SHA2-384.
* ```ts
* await sha384(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha384 = /* @__PURE__ */ createWebHash('SHA-384', 128, 48);
/**
* WebCrypto SHA2-512 hash function from RFC 6234.
* @param msg - message bytes to hash
* @returns Promise resolving to digest bytes.
* @example
* Hash a message with WebCrypto SHA2-512.
* ```ts
* await sha512(new Uint8Array([97, 98, 99]));
* ```
*/
export const sha512 = /* @__PURE__ */ createWebHash('SHA-512', 128, 64);
export const hmac = /* @__PURE__ */ (() => {
const hmac_ = async (hash, key, message) => {
const crypto = _subtle();
abytes(key, undefined, 'key');
abytes(message, undefined, 'message');
ahashWeb(hash);
// WebCrypto keys can't be zeroized
// prettier-ignore
const wkey = await crypto.importKey('raw', key, { name: 'HMAC', hash: hash.webCryptoName }, false, ['sign']);
return new Uint8Array(await crypto.sign('HMAC', wkey, message));
};
hmac_.create = (_hash, _key) => {
throw new Error('not implemented');
};
return hmac_;
})();
/**
* WebCrypto HKDF (RFC 5869): derive keys from an initial input.
* Combines hkdf_extract + hkdf_expand in one step
* @param hash - hash function that would be used (e.g. sha256). Webcrypto version.
* @param ikm - input keying material, the initial key
* @param salt - optional salt value (a non-secret random value)
* @param info - optional context and application specific information bytes
* @param length - length of output keying material in bytes.
* RFC 5869 §2.3 allows `0..255*HashLen`, so `0` requests an empty OKM.
* @returns Promise resolving to derived key bytes.
* The RFC `L <= 255 * HashLen` bound is currently enforced only by backend
* `deriveBits()` rejection, not by an explicit library-side guard.
* @throws If the current runtime does not provide `crypto.subtle`. {@link Error}
* @example
* WebCrypto HKDF (RFC 5869): derive keys from an initial input.
* ```ts
* import { hkdf, sha256 } from '@noble/hashes/webcrypto.js';
* import { randomBytes, utf8ToBytes } from '@noble/hashes/utils.js';
* const inputKey = randomBytes(32);
* const salt = randomBytes(32);
* const info = utf8ToBytes('application-key');
* const okm = await hkdf(sha256, inputKey, salt, info, 32);
* ```
*/
export async function hkdf(hash, ikm, salt, info, length) {
const crypto = _subtle();
ahashWeb(hash);
abytes(ikm, undefined, 'ikm');
anumber(length, 'length');
if (salt !== undefined)
abytes(salt, undefined, 'salt');
if (info !== undefined)
abytes(info, undefined, 'info');
const wkey = await crypto.importKey('raw', ikm, 'HKDF', false, ['deriveBits']);
const opts = {
name: 'HKDF',
hash: hash.webCryptoName,
salt: salt === undefined ? new Uint8Array(0) : salt,
info: info === undefined ? new Uint8Array(0) : info,
};
return new Uint8Array(await crypto.deriveBits(opts, wkey, 8 * length));
}
/**
* WebCrypto PBKDF2-HMAC: RFC 8018 key derivation function.
* @param hash - hash function that would be used e.g. sha256. Webcrypto version.
* @param password - password from which a derived key is generated; string
* inputs are normalized through `kdfInputToBytes()`, i.e. UTF-8
* @param salt - cryptographic salt; string inputs are normalized through
* `kdfInputToBytes()`, i.e. UTF-8
* @param opts - PBKDF2 work factor and output settings. `dkLen`, if provided,
* must be `>= 1` per RFC 8018 §5.2. See {@link Pbkdf2Opt}.
* @returns Promise resolving to derived key bytes.
* Positive-iteration enforcement is currently delegated to backend
* `deriveBits()` rejection (for example `c = 0`), not a dedicated
* library-side guard.
* @throws If the current runtime does not provide `crypto.subtle`. {@link Error}
* @example
* WebCrypto PBKDF2-HMAC: RFC 2898 key derivation function.
* ```ts
* import { pbkdf2, sha256 } from '@noble/hashes/webcrypto.js';
* const key = await pbkdf2(sha256, 'password', 'salt', { dkLen: 32, c: Math.pow(2, 18) });
* ```
*/
export async function pbkdf2(hash, password, salt, opts) {
const crypto = _subtle();
ahashWeb(hash);
const _opts = checkOpts({ dkLen: 32 }, opts);
const { c, dkLen } = _opts;
anumber(c, 'c');
anumber(dkLen, 'dkLen');
// RFC 8018 §5.2 defines dkLen as a positive integer.
if (dkLen < 1)
throw new Error('"dkLen" must be >= 1');
const _password = kdfInputToBytes(password, 'password');
const _salt = kdfInputToBytes(salt, 'salt');
const key = await crypto.importKey('raw', _password, 'PBKDF2', false, [
'deriveBits',
]);
const deriveOpts = { name: 'PBKDF2', salt: _salt, iterations: c, hash: hash.webCryptoName };
return new Uint8Array(await crypto.deriveBits(deriveOpts, key, 8 * dkLen));
}
//# sourceMappingURL=webcrypto.js.map

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