From 3ef6719f47b734b12c0b11c725b7f12e3fb3c08a Mon Sep 17 00:00:00 2001 From: Uros Majstorovic Date: Tue, 23 May 2017 14:19:26 +0200 Subject: fs layout updated --- code/crypto/compat/timingsafe_memcmp.c | 46 ---------------------------------- 1 file changed, 46 deletions(-) delete mode 100644 code/crypto/compat/timingsafe_memcmp.c (limited to 'code/crypto/compat/timingsafe_memcmp.c') diff --git a/code/crypto/compat/timingsafe_memcmp.c b/code/crypto/compat/timingsafe_memcmp.c deleted file mode 100644 index bb210a3..0000000 --- a/code/crypto/compat/timingsafe_memcmp.c +++ /dev/null @@ -1,46 +0,0 @@ -/* $OpenBSD: timingsafe_memcmp.c,v 1.2 2015/08/31 02:53:57 guenther Exp $ */ -/* - * Copyright (c) 2014 Google Inc. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include -#include - -int -timingsafe_memcmp(const void *b1, const void *b2, size_t len) -{ - const unsigned char *p1 = b1, *p2 = b2; - size_t i; - int res = 0, done = 0; - - for (i = 0; i < len; i++) { - /* lt is -1 if p1[i] < p2[i]; else 0. */ - int lt = (p1[i] - p2[i]) >> CHAR_BIT; - - /* gt is -1 if p1[i] > p2[i]; else 0. */ - int gt = (p2[i] - p1[i]) >> CHAR_BIT; - - /* cmp is 1 if p1[i] > p2[i]; -1 if p1[i] < p2[i]; else 0. */ - int cmp = lt - gt; - - /* set res = cmp if !done. */ - res |= cmp & ~done; - - /* set done if p1[i] != p2[i]. */ - done |= lt | gt; - } - - return (res); -} -- cgit v1.2.3