newKeychainTransaction method

Transaction newKeychainTransaction(String seed, List<String> authorizedPublicKeys, Uint8List originPrivateKey, { String? serviceName, String? derivationPath, })

Create a new keychain and build a transaction @param {String} seed Keychain's seed @param {List

Implementation

Transaction newKeychainTransaction(
  String seed,
  List<String> authorizedPublicKeys,
  Uint8List originPrivateKey, {
  String? serviceName,
  String? derivationPath,
}) {
  final keychain = Keychain(Uint8List.fromList(hexToUint8List(seed)));
  if (serviceName!.isNotEmpty && derivationPath!.isNotEmpty) {
    keychain.addService(serviceName, derivationPath);
  }

  final aesKey = uint8ListToHex(
    Uint8List.fromList(
      List<int>.generate(32, (int i) => Random.secure().nextInt(256)),
    ),
  );

  final authorizedKeys = List<AuthorizedKey>.empty(growable: true);
  for (final key in authorizedPublicKeys) {
    authorizedKeys.add(
      AuthorizedKey(
        encryptedSecretKey: uint8ListToHex(ecEncrypt(aesKey, key)),
        publicKey: key,
      ),
    );
  }

  return Transaction(type: 'keychain', data: Transaction.initData())
      .setContent(jsonEncode(keychain.toDID()))
      .addOwnership(aesEncrypt(keychain.encode(), aesKey), authorizedKeys)
      .build(seed, 0)
      .originSign(originPrivateKey);
}