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Overview

Ledger Nano devices provide secure hardware wallet solutions for managing your cryptocurrencies. This Flutter package is a plugin for the ledger_flutter package that enables interaction with the Zilliqa blockchain, allowing you to retrieve accounts and sign transactions using your Ledger hardware wallet.

Features

• 🔑 Get public keys and addresses
• 📝 Sign transactions
• 🔐 Sign message hashes
• 📱 Cross-platform support (iOS & Android)
• ⚡️ Fast and efficient BLE communication
• 🔒 Secure transaction signing

Getting Started

Installation

Add the latest version of this package to your pubspec.yaml:

dependencies:
  zilliqa_ledger_flutter: ^latest-version

For integration with the Ledger Flutter package, check out the documentation here.

Setup

Create a new instance of a ZilliqaLedgerApp and pass an instance of your Ledger object:

final app = ZilliqaLedgerApp(ledger);

Usage

Get Public Key and Address

You can retrieve the public key and address for a specific account index:

// Get public key
final publicKey = await app.getPublicKey(device, accountIndex);

// Get public address
final addressInfo = await app.getPublicAddress(device, accountIndex);
print('Address: ${addressInfo.address}');
print('Public Key: ${addressInfo.publicKey}');

Sign Transactions

Sign Zilliqa transactions using your Ledger device:

// Prepare your transaction bytes
final transaction = // Your encoded transaction bytes

final signature = await app.signZilliqaTransaction(
    device,
    transaction,
    accountIndex,
);

// Use the signature with your transaction
print('Transaction signature: $signature');

Sign Message Hash

Sign message hashes for verification:

final hash = // Your message hash bytes
final signature = await app.signHash(
    device,
    hash,
    accountIndex,
);

print('Message signature: $signature');

Error Handling

The plugin includes comprehensive error handling for common Ledger operations:

try {
  final publicKey = await app.getPublicKey(device, accountIndex);
} catch (e) {
  if (e is LedgerException) {
    // Handle Ledger-specific errors
    print('Ledger error: ${e.message}');
  } else {
    // Handle other errors
    print('Error: $e');
  }
}

Contributing

Contributions are what make the open source community such an amazing place to learn, inspire, and create. Any contributions you make are greatly appreciated.

If you have a suggestion that would make this better, please fork the repo and create a pull request. You can also simply open an issue with the tag enhancement.

1. Fork the Project
2. Create your Feature Branch (git checkout -b feature/amazing-feature)
3. Commit your Changes (git commit -m 'feat: add some amazing feature')
4. Push to the Branch (git push origin feature/amazing-feature)
5. Open a Pull Request

License

The zilliqa_ledger_flutter package is released under the MIT License. See LICENSE for details.

Support

If you like this package, consider supporting it by:

• ⭐️ Starring the repository
• 🐛 Reporting bugs
• 📝 Contributing to the codebase
• 💡 Suggesting new featuresrom the package authors, and more.