dart_mnemonic

Reference implementation of BIP-0039 for the Dart language. This library is used to generate crypto wallet mnemonic phrases and derive HD wallet root seed from those phrases.

Features

Support for all existing BIP-0039 Wordlists.

Getting started

Use this package as a library

Depend on it

Run this command:

With Dart:

dart pub add dart_mnemonic

With Flutter:

flutter pub add dart_mnemonic

This will add a line like this to your package's pubspec.yaml (and run an implicit dart pub get):

dependencies:
  dart_mnemonic: ^latest

Alternatively, your editor might support dart pub get or flutter pub get. Check the docs for your editor to learn more.

Import it

Now in your Dart code, you can use:

import 'package:dart_mnemonic/dart_mnemonic.dart';

Usage

    // Generate a random mnemonic
    var mnemonic = Mnemonic();
    debugPrint("entropy: ${mnemonic.entropyHex}");
    debugPrint("words: ${mnemonic.words}");
    debugPrint("sentence: ${mnemonic.sentence}");
    debugPrint("seed: ${mnemonic.seedHex}");

    // Generate a mnemonic from a known entropy
    var m2 = Mnemonic.fromEntropy("141f7c6da5d76d453497a9f9b3bc44ca");
    debugPrint("entropy: ${m2.entropyHex}");
    // => entropy: 141f7c6da5d76d453497a9f9b3bc44ca
    debugPrint("words: ${m2.words}");
    // => words: [beef, winner, bread, entry, item, penalty, spoil, vivid, whale, over, bachelor, net]
    debugPrint("sentence: ${m2.sentence}");
    // => beef winner bread entry item penalty spoil vivid whale over bachelor net
    debugPrint("seed: ${m2.seedHex}");
    // => seed: cc9441bf020f9b45ad920404ee8a40139dc8cf1eca9ee5720743c4ae2a085c391fede2e19cd4fe345f12767ee8829f3cfb5d2e041ddbbc14d072e568ac506e69

    // Generate a mnemonic from a known mnemonic sentence
    var m3 = Mnemonic.fromMnemonic("beef winner bread entry item penalty spoil vivid whale over bachelor net");
    debugPrint("entropy: ${m3.entropyHex}");
    // => entropy: 141f7c6da5d76d453497a9f9b3bc44ca
    debugPrint("words: ${m3.words}");
    // => words: [beef, winner, bread, entry, item, penalty, spoil, vivid, whale, over, bachelor, net]
    debugPrint("sentence: ${m3.sentence}");
    // => beef winner bread entry item penalty spoil vivid whale over bachelor net
    debugPrint("seed: ${m3.seedHex}");
    // => seed: cc9441bf020f9b45ad920404ee8a40139dc8cf1eca9ee5720743c4ae2a085c391fede2e19cd4fe345f12767ee8829f3cfb5d2e041ddbbc14d072e568ac506e69

    // Generate a mnemonic in Japanese with a passphrase and a word count of 24
    var m4 = Mnemonic(language: Language.japanese, passphrase: "passphrase", length: 24);
    debugPrint("entropy: ${m4.entropyHex}");
    debugPrint("words: ${m4.words}");
    debugPrint("sentence: ${m4.sentence}");
    debugPrint("seed: ${m4.seedHex}");

Additional information

If you have any problems or bugs in use, please contact us.