Stripped of result with not padded AES

[chinabrant]

static List<int> aes128Decode(List<int> data) {
    final key = Key.fromUtf8('15helloTCJTALK20'); 
    final iv = IV.fromLength(16);
    final encrypter = Encrypter(AES(key, iv, mode: AESMode.ecb, padding: null));
    final encrypted = Encrypted(Uint8List.fromList(data));
    print("original: $data");
    print("Uint8List: ${Uint8List.fromList(data)}");
    final result = encrypter.decrypt(encrypted);
    print('result: ${result}');

    return result.runes.toList();
}

flutter: original: [17, 224, 52, 85, 164, 137, 148, 236, 196, 53, 80, 125, 53, 13, 44, 30, 54, 190, 172, 57, 111, 245, 100, 145, 153, 69, 59, 32, 229, 59, 61, 18, 247, 169, 7, 188, 32, 186, 28, 224, 124, 71, 191, 191, 198, 79, 102, 226, 228, 94, 168, 232, 186, 75, 58, 179, 254, 22, 52, 59, 190, 242, 84, 213, 254, 110, 174, 191, 8, 229, 54, 99, 99, 156, 146, 249, 144, 238, 195, 250, 211, 209, 206, 248, 151, 35, 4, 199, 72, 163, 193, 187, 170, 133, 151, 172, 106, 226, 69, 145, 235, 20, 231, 51, 128, 35, 25, 36, 207, 178, 148, 49, 207, 44, 218, 100, 233, 120, 108, 131, 21, 166, 249, 151, 101, 233, 73, 162, 131, 107, 66, 125, 212, 22, 35, 247, 182, 222, 15, 169, 109, 67, 111, 242, 136, 189, 193, 199, 44, 200, 35, 180, 62, 71, 60, 73, 226, 59, 164, 119, 60, 231, 127, 236, 85, 98, 241, 58, 219, 30, 242, 104, 125, 4, 225, 218, 248, 215, 134, 142, 251, 242, 201, 192, 245, 21, 253, 180, 70, 243, 49, 179, 171, 73, 133, 4, 171, 187, 186, 167, 51, 194, 73, 91, 50, 141, 120, 174, 76, 74, 129, 83, 229, 246, <…>
flutter: Uint8List: [17, 224, 52, 85, 164, 137, 148, 236, 196, 53, 80, 125, 53, 13, 44, 30, 54, 190, 172, 57, 111, 245, 100, 145, 153, 69, 59, 32, 229, 59, 61, 18, 247, 169, 7, 188, 32, 186, 28, 224, 124, 71, 191, 191, 198, 79, 102, 226, 228, 94, 168, 232, 186, 75, 58, 179, 254, 22, 52, 59, 190, 242, 84, 213, 254, 110, 174, 191, 8, 229, 54, 99, 99, 156, 146, 249, 144, 238, 195, 250, 211, 209, 206, 248, 151, 35, 4, 199, 72, 163, 193, 187, 170, 133, 151, 172, 106, 226, 69, 145, 235, 20, 231, 51, 128, 35, 25, 36, 207, 178, 148, 49, 207, 44, 218, 100, 233, 120, 108, 131, 21, 166, 249, 151, 101, 233, 73, 162, 131, 107, 66, 125, 212, 22, 35, 247, 182, 222, 15, 169, 109, 67, 111, 242, 136, 189, 193, 199, 44, 200, 35, 180, 62, 71, 60, 73, 226, 59, 164, 119, 60, 231, 127, 236, 85, 98, 241, 58, 219, 30, 242, 104, 125, 4, 225, 218, 248, 215, 134, 142, 251, 242, 201, 192, 245, 21, 253, 180, 70, 243, 49, 179, 171, 73, 133, 4, 171, 187, 186, 167, 51, 194, 73, 91, 50, 141, 120, 174, 76, 74, 129, 83, 229, 246,<…>
flutter: result: {"moment":{"url"

The result just 16 characters. Should be a json string.

what's wrong?

[leocavalcante]

This is probably because of the lack of a padding. I'll dig into that asap.

[christophewang]

@leocavalcante Any update on this issue ? I'm confronted with the same problem. The result I get after I decrypt return me the first 16 bytes but I'm expecting 32 bytes in total. In my case, I don't use padding as well since my data is already a multiple of the block size.

[leocavalcante]

@chinabrant I'm really sorry about the delay, this got out of my radar.
@christophewang thanks for bringing this up!

Can you folks test https://github.com/leocavalcante/encrypt/tree/fix/32 please?

dependencies:
  encrypt:
    git:
      url: git://github.com/leocavalcante/encrypt.git
      ref: fix/32

If it works for you I make it officially 3.1.0 on pub

[christophewang]

@leocavalcante Yes, I just tried and it works for me ! Thanks 👍

[chinabrant]

It works! Thanks.

[leocavalcante]

It on 3.1.0 now https://pub.dev/packages/encrypt/versions/3.1.0
Thanks!