OLD | NEW |
1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 part of crypto; | 5 part of crypto; |
6 | 6 |
7 /** | 7 /** |
8 * SHA256 hash function implementation. | 8 * SHA256 hash function implementation. |
9 */ | 9 */ |
10 class SHA256 extends _HashBase { | 10 class SHA256 extends _HashBase { |
| 11 final List<int> _w; |
| 12 |
11 // Construct a SHA256 hasher object. | 13 // Construct a SHA256 hasher object. |
12 SHA256() : _w = new List(64), super(16, 8, true) { | 14 SHA256() : _w = new List(64), super(16, 8, true) { |
13 // Initial value of the hash parts. First 32 bits of the fractional parts | 15 // Initial value of the hash parts. First 32 bits of the fractional parts |
14 // of the square roots of the first 8 prime numbers. | 16 // of the square roots of the first 8 prime numbers. |
15 _h[0] = 0x6a09e667; | 17 _h[0] = 0x6a09e667; |
16 _h[1] = 0xbb67ae85; | 18 _h[1] = 0xbb67ae85; |
17 _h[2] = 0x3c6ef372; | 19 _h[2] = 0x3c6ef372; |
18 _h[3] = 0xa54ff53a; | 20 _h[3] = 0xa54ff53a; |
19 _h[4] = 0x510e527f; | 21 _h[4] = 0x510e527f; |
20 _h[5] = 0x9b05688c; | 22 _h[5] = 0x9b05688c; |
(...skipping 74 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
95 // Update hash values after iteration. | 97 // Update hash values after iteration. |
96 _h[0] = _add32(a, _h[0]); | 98 _h[0] = _add32(a, _h[0]); |
97 _h[1] = _add32(b, _h[1]); | 99 _h[1] = _add32(b, _h[1]); |
98 _h[2] = _add32(c, _h[2]); | 100 _h[2] = _add32(c, _h[2]); |
99 _h[3] = _add32(d, _h[3]); | 101 _h[3] = _add32(d, _h[3]); |
100 _h[4] = _add32(e, _h[4]); | 102 _h[4] = _add32(e, _h[4]); |
101 _h[5] = _add32(f, _h[5]); | 103 _h[5] = _add32(f, _h[5]); |
102 _h[6] = _add32(g, _h[6]); | 104 _h[6] = _add32(g, _h[6]); |
103 _h[7] = _add32(h, _h[7]); | 105 _h[7] = _add32(h, _h[7]); |
104 } | 106 } |
105 | |
106 final List<int> _w; | |
107 } | 107 } |
OLD | NEW |