From 25de5e761daab8b897a4f09ff8503e6f43c299f9 Mon Sep 17 00:00:00 2001 From: Uros Majstorovic Date: Wed, 3 May 2017 21:10:08 +0200 Subject: initial commit --- code/crypto/compat/timingsafe_bcmp.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 code/crypto/compat/timingsafe_bcmp.c (limited to 'code/crypto/compat/timingsafe_bcmp.c') diff --git a/code/crypto/compat/timingsafe_bcmp.c b/code/crypto/compat/timingsafe_bcmp.c new file mode 100644 index 0000000..552e844 --- /dev/null +++ b/code/crypto/compat/timingsafe_bcmp.c @@ -0,0 +1,29 @@ +/* $OpenBSD: timingsafe_bcmp.c,v 1.3 2015/08/31 02:53:57 guenther Exp $ */ +/* + * Copyright (c) 2010 Damien Miller. All rights reserved. + * + * 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 + +int +timingsafe_bcmp(const void *b1, const void *b2, size_t n) +{ + const unsigned char *p1 = b1, *p2 = b2; + int ret = 0; + + for (; n > 0; n--) + ret |= *p1++ ^ *p2++; + return (ret != 0); +} -- cgit v1.2.3