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comparison: mfbt/SHA1.h
mfbt/SHA1.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:1bbbbf70c8bc |
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 /* Simple class for computing SHA1. */ | |
| 8 | |
| 9 #ifndef mozilla_SHA1_h | |
| 10 #define mozilla_SHA1_h | |
| 11 | |
| 12 #include "mozilla/Types.h" | |
| 13 | |
| 14 #include <stddef.h> | |
| 15 #include <stdint.h> | |
| 16 | |
| 17 namespace mozilla { | |
| 18 | |
| 19 /** | |
| 20 * This class computes the SHA1 hash of a byte sequence, or of the concatenation | |
| 21 * of multiple sequences. For example, computing the SHA1 of two sequences of | |
| 22 * bytes could be done as follows: | |
| 23 * | |
| 24 * void SHA1(const uint8_t* buf1, uint32_t size1, | |
| 25 * const uint8_t* buf2, uint32_t size2, | |
| 26 * SHA1Sum::Hash& hash) | |
| 27 * { | |
| 28 * SHA1Sum s; | |
| 29 * s.update(buf1, size1); | |
| 30 * s.update(buf2, size2); | |
| 31 * s.finish(hash); | |
| 32 * } | |
| 33 * | |
| 34 * The finish method may only be called once and cannot be followed by calls | |
| 35 * to update. | |
| 36 */ | |
| 37 class SHA1Sum | |
| 38 { | |
| 39 union { | |
| 40 uint32_t w[16]; /* input buffer */ | |
| 41 uint8_t b[64]; | |
| 42 } u; | |
| 43 uint64_t size; /* count of hashed bytes. */ | |
| 44 unsigned H[22]; /* 5 state variables, 16 tmp values, 1 extra */ | |
| 45 bool mDone; | |
| 46 | |
| 47 public: | |
| 48 MFBT_API SHA1Sum(); | |
| 49 | |
| 50 static const size_t HashSize = 20; | |
| 51 typedef uint8_t Hash[HashSize]; | |
| 52 | |
| 53 /* Add len bytes of dataIn to the data sequence being hashed. */ | |
| 54 MFBT_API void update(const void* dataIn, uint32_t len); | |
| 55 | |
| 56 /* Compute the final hash of all data into hashOut. */ | |
| 57 MFBT_API void finish(SHA1Sum::Hash& hashOut); | |
| 58 }; | |
| 59 | |
| 60 } /* namespace mozilla */ | |
| 61 | |
| 62 #endif /* mozilla_SHA1_h */ |
