mnemonicToPrivateKey method

Implementation

@override
Future<Uint8List> mnemonicToPrivateKey(String mnemonic) async {
  if (setting.bip44Path != defaultDerivationPath) {
    throw ArgumentError(
      'BTCB2 only supports derivation path $defaultDerivationPath.',
    );
  }
  return HDWallet.bip32DerivePath(mnemonic, defaultDerivationPath);
}