Invalid argument(s): Invalid or corrupted pad block

[AhmedTawfiqM]

• I can't decrypt encrypted Uint8List by below decrypt function the strange thing is it works fine with some data and not working with others my app is in production and users is crying now :( :) , any solution please ?

class EncryptDataBase {
  static final key =
      encryptLib.Key.fromUtf8('SOMEKEY');
  static final iv = encryptLib.IV.allZerosOfLength(16);
  static final Uint8List encryptionMarker =
      Uint8List.fromList('EN:'.codeUnits);

  static Uint8List encrypt(Uint8List data) {
    final encrypter = encryptLib.Encrypter(encryptLib.AES(key));
    final encrypted = encrypter.encryptBytes(data, iv: iv);
    final markerAndData =
        Uint8List(encryptionMarker.length + encrypted.bytes.length);
    markerAndData.setRange(0, encryptionMarker.length, encryptionMarker);
    markerAndData.setRange(
      encryptionMarker.length,
      markerAndData.length,
      encrypted.bytes,
    );
    return markerAndData;
  }

  static Uint8List decrypt(Uint8List data) {
    if (data.length >= encryptionMarker.length &&
        data.sublist(0, encryptionMarker.length).toString() ==
            encryptionMarker.toString()) {
      final encryptedData = data.sublist(encryptionMarker.length);
      final encrypter = encryptLib.Encrypter(encryptLib.AES(key));
      return Uint8List.fromList(
          encrypter.decryptBytes(encryptLib.Encrypted(encryptedData), iv: iv));
    }
    // If no marker, return the data as it is
    return data;
  }
}

[Mohamed1226]

the same issue is there any solution?

[apackin]

We had the same issue. Downgrading to version 5.0.1 worked for us. Looks like there is some kind of breaking change in 5.0.2

[Mr-yuwei]

same issue,need help

[neoacevedo]

We had the same issue. Downgrading to version 5.0.1 worked for us. Looks like there is some kind of breaking change in 5.0.2

I agree. I had the 5.0.3, with some code to decrypt I was receiving the same issue, but in addition to it, with the sample code in the repo but with a tiny modification to decrypt from plain text, not from an Encrypter object, it simply didn't decrypt, instead it left the same crypted value.