zeromem.c

来自「这是一个用来加解密的算法库」· C语言 代码 · 共 30 行

/* LibTomCrypt, modular cryptographic library -- Tom St Denis
 *
 * LibTomCrypt is a library that provides various cryptographic
 * algorithms in a highly modular and flexible manner.
 *
 * The library is free for all purposes without any express
 * guarantee it works.
 *
 * Tom St Denis, [e-mail], http://libtomcrypt.org
 */
#include "tomcrypt.h"

/**
   @file zeromem.c
   Zero a block of memory, Tom St Denis
*/

/**
   Zero a block of memory
   @param out    The destination of the area to zero
   @param outlen The length of the area to zero (octets)
*/
void zeromem(void *out, size_t outlen)
{
 unsigned char *mem = (unsigned char *)out;
 LTC_ARGCHK(out != NULL);
 while (outlen-- > 0)
    *mem++ = 0;
}