/*
* src / port / timingsafe_bcmp . c
*
* $ 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 "c.h"
#ifdef USE_SSL
#include <openssl/crypto.h>
#endif
int
timingsafe_bcmp(const void *b1, const void *b2, size_t n)
{
#ifdef USE_SSL
return CRYPTO_memcmp(b1, b2, n);
#else
const unsigned char *p1 = b1,
*p2 = b2;
int ret = 0 ;
for (; n > 0 ; n--)
ret |= *p1++ ^ *p2++;
return (ret != 0 );
#endif
}
Messung V0.5 in Prozent C=92 H=95 G=93
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-08-08)
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