hd_wallet 0.0.3

A basic toolkit for Cryptocurrency wallet in Dart. This package is used to generate and manage the Hierarchical Deterministic (HD) Wallet application.

HD Wallet

A basic toolkit for Cryptocurrency wallet in Dart. This package is used to generate and manage the Hierarchical Deterministic (HD) Wallet application.

Features

You can easily use this package to develop crypto wallets through the Dart language.

Getting started

Use this package as a library

Depend on it

Run this command:

With Dart:

dart pub add hd_wallet

With Flutter:

flutter pub add hd_wallet

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

dependencies:
  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:hd_wallet/hd_wallet.dart';

Usage

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

Bip39

Generate 24 Japanese words mnemonice:

// default strength is 128 bits (12 words),
// 160(15), 192(18), 224(21), 256(24)
final mnemonic = bip39.generateMnemonic(language: Language.japanese, strength: 256);

Bip32

Forked from bip32-dart and improve some flaws.

bip32.BIP32 node = bip32.BIP32.fromBase58(
        'xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi');
final nodePrvk = HEX.encode(node.privateKey as List<int>);
debugPrint("nodePrvk: $nodePrvk");
// => e8f32e723decf4051aefac8e2c93c9c5b214313817cdb01a1494b917c8436b35

bip32.BIP32 nodeNeutered = node.neutered();
debugPrint("isNeutered: ${nodeNeutered.isNeutered()}");
// => true

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

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

bip32.BIP32 child = node.derivePath('m/0/0');
debugPrint(child.toBase58());
// => xprv9ww7sMFLzJMzur2oEQDB642fbsMS4q6JRraMVTrM9bTWBq7NDS8ZpmsKVB4YF3mZecqax1fjnsPF19xnsJNfRp4RSyexacULXMKowSACTRc

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

bip32.BIP32 childNeutered = child.neutered();
debugPrint("childNeutered isNeutered: ${childNeutered.isNeutered()}");
// => true

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

bip32.BIP32 nodeFromSeed = bip32.BIP32.fromSeed(
    Uint8List.fromList(HEX.decode("000102030405060708090a0b0c0d0e0f")));
debugPrint(nodeFromSeed.toBase58());
// => xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi

bip32.BIP32 nodeFromPub = bip32.BIP32.fromBase58(
    "xpub661MyMwAqRbcFtXgS5sYJABqqG9YLmC4Q1Rdap9gSE8NqtwybGhePY2gZ29ESFjqJoCu1Rupje8YtGqsefD265TMg7usUDFdp6W1EGMcet8");
debugPrint(nodeFromPub.toBase58());
// => xpub661MyMwAqRbcFtXgS5sYJABqqG9YLmC4Q1Rdap9gSE8NqtwybGhePY2gZ29ESFjqJoCu1Rupje8YtGqsefD265TMg7usUDFdp6W1EGMcet8

Additional information

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