Flutter Web上不支持Uint64List

qv7cva1a 于 2022-11-25 发布在 Flutter

关注(0)|答案(2)|浏览(164)

flutter Web中的Uint64List有错误（在pointycastle库中）

var length = Uint8List.view((Uint64List(2)..[0] = iv.length * 8).buffer);

"Error: Unsupported operation: Uint64List not supported on the web.
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 266:49  throw_
dart-sdk/lib/_internal/js_dev_runtime/patch/typed_data_patch.dart 115:5       new
packages/pointycastle/block/modes/gcm.dart 81:36                              [_computeInitialCounter]
packages/pointycastle/block/modes/gcm.dart 61:16                              prepare
packages/pointycastle/src/impl/base_aead_block_cipher.dart 217:5              reset
packages/pointycastle/block/modes/gcm.dart 47:11                              reset
packages/pointycastle/src/impl/base_aead_block_cipher.dart 117:5              init
packages/pointycastle/block/modes/gcm.dart 40:11                              init
packages/crypto_keys/src/symmetric_operator.dart 71:16                        encrypt

你知道怎么修吗？谢谢

flutter

来源：https://stackoverflow.com/questions/74523047/uint64list-not-supported-on-flutter-web

2条答案

按热度按时间

yzckvree1#

对于IV长度的所有实际值，您可以将该值拟合为32位int。以下等效代码在Dartpad中运行良好，并给出与VM中上述代码相同的结果。

import 'dart:typed_data';

void main() {
  final iv = Uint8List(12);

  final length = Uint8List.view((Uint32List(4)..[0] = iv.length * 8).buffer);

  print(length);
}

赞(0）回复(0）举报 2022-11-25

0dxa2lsx2#

谢谢，请问怎么样？

@override
  int doFinal(Uint8List out, int outOff) {
    var result = remainingInput.isNotEmpty
        ? processBlock(remainingInput, 0, out, outOff)
        : 0;

    var len = Uint8List.view((Uint64List(2)
          ..[1] = aad!.length * 8
          ..[0] = _processedBytes * 8)
        .buffer);
    len = Uint8List.fromList(len.reversed.toList());

    _gHASHBlock(_x, len);

    _xor(_x, _e0);

    if (forEncryption) {
      out.setAll(outOff + result, _x);
      result += _x.length;
    }

    validateMac();

    return result;
  }

赞(0）回复(0）举报 2022-11-25

我来回答

Flutter Web上不支持Uint64List

2条答案

相关问题

热门标签

最新问答