crypt_unregister_cipher.c

来自「最新版本的加密解密算法库」· C语言 代码 · 共 29 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 "mycrypt.h"

int unregister_cipher(const struct _cipher_descriptor *cipher)
{
   int x;

   _ARGCHK(cipher != NULL);

   /* is it already registered? */
   for (x = 0; x < TAB_SIZE; x++) {
       if (memcmp(&cipher_descriptor[x], cipher, sizeof(struct _cipher_descriptor)) == 0) {
          cipher_descriptor[x].name = NULL;
          cipher_descriptor[x].ID   = 255;
          return CRYPT_OK;
       }
   }
   return CRYPT_ERROR;
}