deriveAccountPrivateKey function

Implementation

Map<String, Object?> deriveAccountPrivateKey(
    {required Map<String, Object?> source,
    String chain = 'bitcoin',
    String? scriptType,
    int account = 0,
    String? format,
    String? path}) {
  final info = _chain(chain);
  if (info.curve == 'ed25519') {
    final resolvedPath =
        _path(path ?? "m/44'/${info.coinType}'/$account'", ed25519: true);
    final node = Bip32Slip10Ed25519.fromSeed(_sourceSeed(source))
        .derivePath(resolvedPath);
    return {
      'schemaVersion': 1,
      'chain': chain,
      'curve': info.curve,
      'path': resolvedPath,
      'format': null,
      'extendedPrivateKey': null,
      'privateKeyHex': BytesUtils.toHexString(node.privateKey.raw),
      'publicKeyHex':
          BytesUtils.toHexString(node.publicKey.compressed.sublist(1))
    };
  }
  final fmt = _format(info, format, scriptType);
  final resolvedPath =
      _path(path ?? _accountPath(info, account, scriptType, fmt));
  final node =
      Bip32Slip10Secp256k1.fromSeed(_sourceSeed(source), _versions(fmt))
          .derivePath(resolvedPath);
  return {
    'schemaVersion': 1,
    'chain': chain,
    'curve': info.curve,
    'path': resolvedPath,
    'format': fmt.name,
    'extendedPrivateKey': node.privateKey.toExtended,
    'privateKeyHex': BytesUtils.toHexString(node.privateKey.raw),
    'publicKeyHex': BytesUtils.toHexString(node.publicKey.compressed)
  };
}