| Alex Vakulenko | f602473 | 2016-01-22 16:52:43 -0800 | [diff] [blame] | 1 | // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| Alex Vakulenko | 2485474 | 2016-01-22 16:55:13 -0800 | [diff] [blame] | 5 | #include <stddef.h> |
| 6 | |
| Alex Vakulenko | f602473 | 2016-01-22 16:52:43 -0800 | [diff] [blame] | 7 | #include "crypto/secure_util.h" |
| 8 | |
| 9 | namespace crypto { |
| 10 | |
| 11 | bool SecureMemEqual(const void* s1, const void* s2, size_t n) { |
| 12 | const unsigned char* s1_ptr = reinterpret_cast<const unsigned char*>(s1); |
| 13 | const unsigned char* s2_ptr = reinterpret_cast<const unsigned char*>(s2); |
| 14 | unsigned char tmp = 0; |
| 15 | for (size_t i = 0; i < n; ++i, ++s1_ptr, ++s2_ptr) |
| 16 | tmp |= *s1_ptr ^ *s2_ptr; |
| 17 | return (tmp == 0); |
| 18 | } |
| 19 | |
| 20 | } // namespace crypto |
| 21 | |