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@scure/bip39
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Audited & minimal JS implementation of BIP39 mnemonic phrases.
Check out scure-bip32 if you need hierarchical deterministic wallets ("HD Wallets").
scure — audited micro-libraries.
npm install @scure/bip39
import * as bip39 from '@scure/bip39';
import { wordlist } from '@scure/bip39/wordlists/english';
// Generate x random words. Uses Cryptographically-Secure Random Number Generator.
const mn = bip39.generateMnemonic(wordlist);
console.log(mn);
// Reversible: Converts mnemonic string to raw entropy in form of byte array.
const ent = bip39.mnemonicToEntropy(mn, wordlist)
// Reversible: Converts raw entropy in form of byte array to mnemonic string.
bip39.entropyToMnemonic(ent, wordlist);
// Validates mnemonic for being 12-24 words contained in `wordlist`.
bip39.validateMnemonic(mn, wordlist);
// Irreversible: Uses KDF to derive 64 bytes of key data from mnemonic + optional password.
await bip39.mnemonicToSeed(mn, 'password');
bip39.mnemonicToSeedSync(mn, 'password');
This submodule contains the word lists defined by BIP39 for Czech, English, French, Italian, Japanese, Korean, Portuguese, Simplified and Traditional Chinese, and Spanish. These are not imported by default, as that would increase bundle sizes too much. Instead, you should import and use them explicitly.
function generateMnemonic(wordlist: string[], strength?: number): string;
function mnemonicToEntropy(mnemonic: string, wordlist: string[]): Uint8Array;
function entropyToMnemonic(entropy: Uint8Array, wordlist: string[]): string;
function validateMnemonic(mnemonic: string, wordlist: string[]): boolean;
function mnemonicToSeed(mnemonic: string, passphrase?: string): Promise<Uint8Array>;
function mnemonicToSeedSync(mnemonic: string, passphrase?: string): Uint8Array;
All wordlists:
import { wordlist as czech } from '@scure/bip39/wordlists/czech';
import { wordlist as english } from '@scure/bip39/wordlists/english';
import { wordlist as french } from '@scure/bip39/wordlists/french';
import { wordlist as italian } from '@scure/bip39/wordlists/italian';
import { wordlist as japanese } from '@scure/bip39/wordlists/japanese';
import { wordlist as korean } from '@scure/bip39/wordlists/korean';
import { wordlist as portuguese } from '@scure/bip39/wordlists/portuguese';
import { wordlist as simplifiedChinese } from '@scure/bip39/wordlists/simplified-chinese';
import { wordlist as spanish } from '@scure/bip39/wordlists/spanish';
import { wordlist as traditionalChinese } from '@scure/bip39/wordlists/traditional-chinese';
To audit wordlist content, run node scripts/fetch-wordlist.js
.
The library has been independently audited:
The library was initially developed for js-ethereum-cryptography.
At commit ae00e6d7,
it was extracted to a separate package called micro-bip39
.
After the audit we've decided to use @scure
NPM namespace for security.
Copyright (c) 2022 Patricio Palladino, Paul Miller (paulmillr.com)
FAQs
Secure, audited & minimal implementation of BIP39 mnemonic phrases
The npm package @scure/bip39 receives a total of 1,008,411 weekly downloads. As such, @scure/bip39 popularity was classified as popular.
We found that @scure/bip39 demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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