hd_wallet_kit

A Flutter HD Wallet package which provides implementation of:

• Hierarchical Deterministic Wallets BIP32,
• Mnemonic code for generating deterministic keys BIP39,
• and Multi-Account Hierarchy for Deterministic Wallets BIP44.

Inspired by hd-wallet-kit-android

Features

Mnemonic

• Generate mnemonic
• From mnemonic to seed
• From mnemonic to entropy
• Validate mnemonic

HD Wallet

• Create HD wallet from seed
• Key derivation by path
• Key derivation by purpose, coinType, account, change, and index.
• Key serialization

Support wordlists

• English
• Japanese
• Korean
• Spanish
• Chinese (Simplified)
• Chinese (Traditional)
• French
• Italian
• Czech
• Portuguese

Getting started

To use this plugin, add hd_wallet_kit as a dependency in your pubspec.yaml file.

Usage

Generate mnemonic:

final mnemonic = Mnemonic.generate();

From mnemonic to seed:

final seed = Mnemonic.toSeed(mnemonic);

Create hd wallet from seed:

final hdWallet = HDWallet.fromSeed(seed: seed);

Key derivation:

final key = hdWallet.deriveChildKeyByPath("m/0");
final bip44Key = hdWallet.deriveChildKey(purpose: Purpose.BIP44, coinType: 0, account: 0, change: 0, index: 0);

Key serialization:

final key = hdWallet.deriveChildKey(purpose: Purpose.BIP44, coinType: 0, account: 0, change: 0, index: 0);
final accountExtendedPubKey = key.serializePublic(HDExtendedKeyVersion.xpub);
final accountExtendedPrivKey = key.serializePublic(HDExtendedKeyVersion.xprv);

Encode address:

final key = hdWallet.deriveChildKey(purpose: Purpose.BIP44, coinType: 0, account: 0, change: 0, index: 0);
final address = key.encodeAddress();