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import native from './native.js';
import { defaultHashLength } from '../base/hash-fn.js';
/**
* @hidden
*/
export const normalizeInput = (input, encoding) => {
if (input instanceof Buffer) {
return input;
}
if (typeof input === 'string') {
return Buffer.from(input, encoding);
}
return Buffer.from(input);
};
/**
* Returns a blake3 hash of the input, returning the binary hash data.
*/
export function hash(input, { length = defaultHashLength } = {}) {
return native.hash(normalizeInput(input), length);
}
/**
* 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 hasher = new native.Hasher(undefined, context);
hasher.update(normalizeInput(material));
const result = Buffer.alloc(length);
hasher.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 } = {}) {
const hasher = new native.Hasher(key);
hasher.update(normalizeInput(input));
const result = Buffer.alloc(length);
hasher.digest(result);
return result;
}
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