/src/hpn-ssh/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 "includes.h" |
21 | | #ifndef HAVE_TIMINGSAFE_BCMP |
22 | | |
23 | | int |
24 | | timingsafe_bcmp(const void *b1, const void *b2, size_t n) |
25 | 0 | { |
26 | 0 | const unsigned char *p1 = b1, *p2 = b2; |
27 | 0 | int ret = 0; |
28 | |
|
29 | 0 | for (; n > 0; n--) |
30 | 0 | ret |= *p1++ ^ *p2++; |
31 | 0 | return (ret != 0); |
32 | 0 | } |
33 | | |
34 | | #endif /* TIMINGSAFE_BCMP */ |