@polkadot/util-crypto/pbkdf2/encode.js

A collection of useful crypto utilities for @polkadot

import { pbkdf2 as pbkdf2Js } from '@noble/hashes/pbkdf2';
import { sha512 } from '@noble/hashes/sha512';
import { hasBigInt, u8aToU8a } from '@polkadot/util';
import { isReady, pbkdf2 } from '@polkadot/wasm-crypto';
import { randomAsU8a } from '../random/asU8a.js';
export function pbkdf2Encode(passphrase, salt = randomAsU8a(), rounds = 210000, onlyJs) {
    // When using the JS implementation (pbkdf2Js), large iteration counts can
    // cause excessive computation time or memory usage. In that case, we cap
    // the number of rounds to 2048 to ensure reliable performance.
    if (onlyJs && rounds > 2048) {
        rounds = 2048;
    }
    const u8aPass = u8aToU8a(passphrase);
    const u8aSalt = u8aToU8a(salt);
    return {
        password: !hasBigInt || (!onlyJs && isReady())
            ? pbkdf2(u8aPass, u8aSalt, rounds)
            : pbkdf2Js(sha512, u8aPass, u8aSalt, { c: rounds, dkLen: 64 }),
        rounds,
        salt
    };
}