1/* LibTomCrypt, modular cryptographic library -- Tom St Denis
2 *
3 * LibTomCrypt is a library that provides various cryptographic
4 * algorithms in a highly modular and flexible manner.
5 *
6 * The library is free for all purposes without any express
7 * guarantee it works.
8 *
9 * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
10 */
11#include "tomcrypt.h"
12
13/**
14  @file crypt_unregister_cipher.c
15  Unregister a cipher, Tom St Denis
16*/
17
18/**
19  Unregister a cipher from the descriptor table
20  @param cipher   The cipher descriptor to remove
21  @return CRYPT_OK on success
22*/
23int unregister_cipher(const struct ltc_cipher_descriptor *cipher)
24{
25   int x;
26
27   LTC_ARGCHK(cipher != NULL);
28
29   /* is it already registered? */
30   LTC_MUTEX_LOCK(&ltc_cipher_mutex);
31   for (x = 0; x < TAB_SIZE; x++) {
32       if (XMEMCMP(&cipher_descriptor[x], cipher, sizeof(struct ltc_cipher_descriptor)) == 0) {
33          cipher_descriptor[x].name = NULL;
34          cipher_descriptor[x].ID   = 255;
35          LTC_MUTEX_UNLOCK(&ltc_cipher_mutex);
36          return CRYPT_OK;
37       }
38   }
39   LTC_MUTEX_UNLOCK(&ltc_cipher_mutex);
40   return CRYPT_ERROR;
41}
42
43/* $Source: /cvs/libtom/libtomcrypt/src/misc/crypt/crypt_unregister_cipher.c,v $ */
44/* $Revision: 1.6 $ */
45/* $Date: 2006/11/01 09:28:17 $ */
46