| // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import 'package:collection/collection.dart'; |
| import 'package:convert/convert.dart'; |
| |
| /// A message digest as computed by a `Hash` or `HMAC` function. |
| class Digest { |
| /// The message digest as an array of bytes. |
| final List<int> bytes; |
| |
| Digest(this.bytes); |
| |
| /// Returns whether this is equal to another digest. |
| /// |
| /// This should be used instead of manual comparisons to avoid leaking |
| /// information via timing. |
| @override |
| bool operator ==(Object other) => |
| other is Digest && const ListEquality().equals(bytes, other.bytes); |
| |
| @override |
| int get hashCode => const ListEquality().hash(bytes); |
| |
| /// The message digest as a string of hexadecimal digits. |
| @override |
| String toString() => hex.encode(bytes); |
| } |