HD Wallet

A basic toolkit for Cryptocurrency wallet in Dart. This package is used to generate and manage the Hierarchical Deterministic (HD) Wallet application. Forked from https://github.com/CrystalNetwork/hd_wallet

Features

You can easily use this package to develop crypto wallets through the Dart language. The goal of this fork is to support a growing list of coin types. Please submit a pull request if you would like to contribute.

Getting started

Use this package as a library

Depend on it

Run this command:

With Dart:

dart pub add flutter_hd_wallet

With Flutter:

flutter pub add flutter_hd_wallet

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

dependencies:
  flutter_hd_wallet: ^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:flutter_hd_wallet/flutter_hd_wallet.dart';

Usage

Short and useful examples for package users. Longer examples is in /example folder.

Bip39

Generate mnemonice:

// default mnemonic is 12 english words,
final m = BIP39();
debugPrint("words: ${m.mnemonic}");
debugPrint("seed: ${m.seed}");

Bip32

Forked from bip32-dart and improve some flaws.

BIP32 node = BIP32.fromBase58(
        'xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi');
final nodePrvk = HEX.encode(node.privateKey as List<int>);
debugPrint("nodePrvk: $nodePrvk");
// => e8f32e723decf4051aefac8e2c93c9c5b214313817cdb01a1494b917c8436b35

BIP32 nodeNeutered = node.neutered();
debugPrint("isNeutered: ${nodeNeutered.isNeutered()}");
// => true

debugPrint(HEX.encode(nodeNeutered.publicKey));
// => 0339a36013301597daef41fbe593a02cc513d0b55527ec2df1050e2e8ff49c85c2

debugPrint(nodeNeutered.toBase58());
// => xpub661MyMwAqRbcFtXgS5sYJABqqG9YLmC4Q1Rdap9gSE8NqtwybGhePY2gZ29ESFjqJoCu1Rupje8YtGqsefD265TMg7usUDFdp6W1EGMcet8

BIP32 child = node.derivePath('m/0/0');
debugPrint(child.toBase58());
// => xprv9ww7sMFLzJMzur2oEQDB642fbsMS4q6JRraMVTrM9bTWBq7NDS8ZpmsKVB4YF3mZecqax1fjnsPF19xnsJNfRp4RSyexacULXMKowSACTRc

debugPrint(HEX.encode(child.privateKey as List<int>));
// => f26cf12f89ab91aeeb8d7324a22e8ba080829db15c9245414b073a8c342322aa

BIP32 childNeutered = child.neutered();
debugPrint("childNeutered isNeutered: ${childNeutered.isNeutered()}");
// => true

debugPrint(HEX.encode(childNeutered.publicKey));
// => 02756de182c5dd4b717ea87e693006da62dbb3cddaa4a5cad2ed1f5bbab755f0f5

BIP32 nodeFromSeed = BIP32.fromSeed(
    Uint8List.fromList(HEX.decode("000102030405060708090a0b0c0d0e0f")));
debugPrint(nodeFromSeed.toBase58());
// => xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi

BIP32 nodeFromPub = BIP32.fromBase58(
    "xpub661MyMwAqRbcFtXgS5sYJABqqG9YLmC4Q1Rdap9gSE8NqtwybGhePY2gZ29ESFjqJoCu1Rupje8YtGqsefD265TMg7usUDFdp6W1EGMcet8");
debugPrint(nodeFromPub.toBase58());
// => xpub661MyMwAqRbcFtXgS5sYJABqqG9YLmC4Q1Rdap9gSE8NqtwybGhePY2gZ29ESFjqJoCu1Rupje8YtGqsefD265TMg7usUDFdp6W1EGMcet8

Bip44

const coin = 60;
const account = 0;
const change = 0;
const index = 1024;
final node = BIP44.fromSeed(
    "87fbb2c47e6cb3a8c5dc0eb9c6b86ac6d78c19a3a62ee6e3b59cb92fda2c9a58df77a691f450645f78ec98584edf9c7b4c25f2e414fc9f39e97ba6788f5311a0",
    coinType: coin);

debugPrint(node.privateKeyHex());
// => 126b43a322b80d0f18bbdef0fd455fe680d78b7c038b243a5b5d40e331b032d7

debugPrint(node.privateKeyHex());
// => 02b6f32dde6031f55787fbf9d861c233526b53c56e30c854ebd61fc6ed681fc91d

debugPrint(node.privateKeyHex(hardened: true));
// => 07590f06719e5b561b2323568a668ac21c4ca327a28960534ef0b392148fa180

debugPrint(node.publicKeyHex(hardened: true));
// => 03e6dd25138127138140a0af34d214c9f006e2d6d475eed3fac0c2659ff2c1eacf

debugPrint(node.privateKeyHex(account: account, change: change, index: index));
// => f033d0f338838555d2842a33e21cbf59a49a3537cd494bff7ada534cbc118243

debugPrint(node.publicKeyHex(account: account, change: change, index: index));
// => 02d3464e4d0504a6eed97299e85975fdf5be29cb1d1c49f6d217113bc7d77181b2

debugPrint(node.privateKeyHex(
          account: account, change: change, index: index, hardened: true));
// => 155105f81999676268d15ba007aff2f8f391d7f21df2c9a50b39fd58f62de546

debugPrint(node.publicKeyHex(
          account: account, change: change, index: index, hardened: true));
// => 03e6859749a3b614748046b820fb3f3496d1116734e3e2acb67bf25f6a91fb6cc9

debugPrint(node.address(index: 1));
// => 0x2071fC489F9998d8C6674176655F18D73AFa5Aaa

debugPrint(node.address(index: 2, hardened: true));
// => 0x487d87C2aCC6272Aad9CdF2cCb98cC06a4e989ae

Additional information

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