Flutter Bitcoin & Dogecoin Wallet Generator

A modern, reliable Flutter implementation for generating Bitcoin and Dogecoin wallets. This project addresses the challenges of obsolete cryptocurrency libraries in the Flutter ecosystem by providing an up-to-date solution for creating hierarchical deterministic (HD) wallets using BIP32, BIP39, and BIP44 standards.

🔑 Key Features

• Secure Mnemonic Generation: Create BIP39 compliant seed phrases
• HD Wallet Support: Implements BIP32/44 standards for deterministic key derivation
• Multi-Coin Support: Currently generates Bitcoin and Dogecoin wallets
• Offline Capability: Generate wallets without an internet connection
• Open Source: Transparent security for cryptocurrency wallet generation
• Current Libraries: Uses updated dependencies to avoid obsolete Flutter crypto libraries
• Maintainable Implementation: Clean architecture that's easy to extend and maintain

Screenshot

Here is a screenshot of the wallet generation result:

🚀 Getting Started

Prerequisites

• Flutter 3.0 or higher
• Dart 3.0 or higher

Installation

1. Clone the repository:

git clone https://github.com/yourusername/flutter_bitcoin_doge_walletgen.git

2. Navigate to the project directory:

cd flutter_bitcoin_doge_walletgen

3. Install dependencies:

flutter pub get

4. Run the application:

flutter run

💻 Usage

// Create a new wallet service instance
final WalletService service = WalletServiceImpl();

// Generate a new mnemonic phrase
final String mnemonic = await service.generateMnemonic();

// Create a Bitcoin wallet
final bitcoinWallet = await service.createWalletFromMnemonic('bitcoin', mnemonic);

// Create a Dogecoin wallet
final dogeWallet = await service.createWalletFromMnemonic('doge', mnemonic);

// Access wallet information
print('Bitcoin Address: ${bitcoinWallet["address"]}');
print('Bitcoin Private Key: ${bitcoinWallet["privateKey"]}');

🛠️ Technical Details

The wallet generator implements the following cryptographic standards:

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

Derivation Paths

• Bitcoin: m/44'/0'/0'/0/0
• Dogecoin: m/44'/3'/0'/0/0

Dependencies

• bip32: For HD wallet generation
• bip39: For mnemonic phrase generation
• bs58check: For Base58Check encoding
• crypto: For cryptographic functions
• pointycastle: For RIPEMD160 digest

🔄 Extending the Project

To add support for additional cryptocurrencies:

1. Implement a new method in the WalletServiceImpl class
2. Add the appropriate derivation path for the cryptocurrency
3. Configure the correct address prefixes for the desired network

Example for adding Litecoin support:

Future<Map<String, dynamic>> _generateLitecoinToken(Uint8List seed) async {
  final hdWallet = bip32.BIP32.fromSeed(seed);
  final derivationPath = "m/44'/2'/0'/0/0"; // Litecoin path
  
  // Implementation details...
}

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

Made with ❤️ for the flutter community