Look for help, the compression of KeyOptions does not work.

[itlwy]

hello @jerson , when I use this library, I hope to specify the compression and cipher field of the KeyOptions class, but it doesn't work. How can i fix it? The example code is as follow:

class TestOpenPGP extends StatefulWidget {
  const TestOpenPGP({super.key});

  @override
  State<TestOpenPGP> createState() => _TestOpenPGPState();
}

class _TestOpenPGPState extends State<TestOpenPGP> {
  String _encryptData = '';
  KeyPair? _keyPair;

  Future<KeyPair> get keyPair async {
    _keyPair ??= await OpenPGP.generate();
    return _keyPair!;
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        body: SizedBox(
      width: double.infinity,
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        crossAxisAlignment: CrossAxisAlignment.center,
        children: [
          ElevatedButton(
              onPressed: _testEncryptPerformance, child: Text('test encrypt')),
          ElevatedButton(
              onPressed: _testDecryptPerformance, child: Text('test decrypt')),
        ],
      ),
    ));
  }

  void _testEncryptPerformance() async {
    final keyOptions = KeyOptions()
      ..compression = Compression.ZLIB
      ..cipher = Cipher.AES128
      ..compressionLevel = 1;
    final publicKey = (await keyPair).publicKey;
    _encryptData = await OpenPGP.encrypt(
        '[{"title":"hello", "content":"world"},{"title":"hello", "content":"world"},{"title":"hello", "content":"world"},{"title":"hello", "content":"world"}]',
        publicKey,
        options: keyOptions);
    print('====> encryptData: $_encryptData');
  }

  void _testDecryptPerformance() async {
    final keyOptions = KeyOptions()
      ..compression = Compression.NONE
      ..cipher = Cipher.CAST5
      ..compressionLevel = 1;
    final privateKey = (await keyPair).privateKey;
    final decryptData = await OpenPGP.decrypt(
        _encryptData, privateKey, "password",
        options: keyOptions);
    print('====> decryptData: $decryptData');
  }
}

My Flutter SDK info is as follow:

% flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.16.9, on macOS 14.1.1 23B81 darwin-arm64, locale zh-Hans-CN)
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 15.0.1)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2023.3)
[✓] VS Code (version 1.89.0)
[✓] Connected device (4 available)
[✓] Network resources

The version of openpgp is 3.7.2