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import { inputToArray, defaultHashLength } from '../base/hash-fn.js'; | |
import { Hash } from './hash.js'; | |
import { getWasm } from './wasm.js'; | |
const textEncoder = new TextEncoder(); | |
/** | |
* @hidden | |
*/ | |
export const normalizeInput = (input) => inputToArray(typeof input === 'string' ? textEncoder.encode(input) : input); | |
/** | |
* Returns a blake3 hash of the input. | |
*/ | |
export function hash(input, { length = defaultHashLength } = {}) { | |
const result = new Hash(length); | |
getWasm().hash(normalizeInput(input), result); | |
return result; | |
} | |
/** | |
* Given cryptographic key material and a context string, services a subkey of | |
* any length. See {@link https://docs.rs/blake3/0.1.3/blake3/fn.derive_key.html} | |
* for more information. | |
*/ | |
export function deriveKey(context, material, { length = defaultHashLength } = {}) { | |
const derive = getWasm().create_derive(context); | |
derive.update(normalizeInput(material)); | |
const result = new Hash(length); | |
derive.digest(result); | |
return result; | |
} | |
/** | |
* The keyed hash function. See {@link https://docs.rs/blake3/0.1.3/blake3/fn.keyed_hash.html}. | |
*/ | |
export function keyedHash(key, input, { length = defaultHashLength } = {}) { | |
if (key.length !== 32) { | |
throw new Error(`key provided to keyedHash must be 32 bytes, got ${key.length}`); | |
} | |
const derive = getWasm().create_keyed(key); | |
derive.update(normalizeInput(input)); | |
const result = new Hash(length); | |
derive.digest(result); | |
return result; | |
} | |
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