/libfido2/openbsd-compat/timingsafe_bcmp.c
| Line | Count | Source | 
| 1 |  | /*      $OpenBSD: timingsafe_bcmp.c,v 1.1 2010/09/24 13:33:00 matthew Exp $     */ | 
| 2 |  | /* | 
| 3 |  |  * Copyright (c) 2010 Damien Miller.  All rights reserved. | 
| 4 |  |  * | 
| 5 |  |  * Permission to use, copy, modify, and distribute this software for any | 
| 6 |  |  * purpose with or without fee is hereby granted, provided that the above | 
| 7 |  |  * copyright notice and this permission notice appear in all copies. | 
| 8 |  |  * | 
| 9 |  |  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | 
| 10 |  |  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | 
| 11 |  |  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | 
| 12 |  |  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | 
| 13 |  |  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | 
| 14 |  |  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | 
| 15 |  |  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | 
| 16 |  |  */ | 
| 17 |  |  | 
| 18 |  | /* OPENBSD ORIGINAL: lib/libc/string/timingsafe_bcmp.c */ | 
| 19 |  |  | 
| 20 |  | #include "openbsd-compat.h" | 
| 21 |  |  | 
| 22 |  | #if !defined(HAVE_TIMINGSAFE_BCMP) | 
| 23 |  |  | 
| 24 |  | int | 
| 25 |  | timingsafe_bcmp(const void *b1, const void *b2, size_t n) | 
| 26 | 19.7k | { | 
| 27 | 19.7k |         const unsigned char *p1 = b1, *p2 = b2; | 
| 28 | 19.7k |         int ret = 0; | 
| 29 |  |  | 
| 30 | 668k |         for (; n > 0; n--) | 
| 31 | 648k |                 ret |= *p1++ ^ *p2++; | 
| 32 | 19.7k |         return (ret != 0); | 
| 33 | 19.7k | } | 
| 34 |  |  | 
| 35 |  | #endif /* !defined(HAVE_TIMINGSAFE_BCMP) */ |