view libtomcrypt/src/misc/crypt/crypt_unregister_prng.c @ 382:0cbe8f6dbf9e

propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 2af22fb4e878750b88f80f90d439b316d229796f) to branch 'au.asn.ucc.matt.dropbear' (head 02c413252c90e9de8e03d91e9939dde3029f5c0a)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 11 Jan 2007 02:41:05 +0000
parents 1b9e69c058d2
children f849a5ca2efc
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/* 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, [email protected], http://libtomcrypt.com
 */
#include "tomcrypt.h"

/**
  @file crypt_unregister_prng.c
  Unregister a PRNG, Tom St Denis
*/

/**
  Unregister a PRNG from the descriptor table
  @param prng   The PRNG descriptor to remove
  @return CRYPT_OK on success
*/
int unregister_prng(const struct ltc_prng_descriptor *prng)
{
   int x;

   LTC_ARGCHK(prng != NULL);
 
   /* is it already registered? */
   LTC_MUTEX_LOCK(&ltc_prng_mutex);
   for (x = 0; x < TAB_SIZE; x++) {
       if (XMEMCMP(&prng_descriptor[x], prng, sizeof(struct ltc_prng_descriptor)) != 0) {
          prng_descriptor[x].name = NULL;
          LTC_MUTEX_UNLOCK(&ltc_prng_mutex);
          return CRYPT_OK;
       }
   }
   LTC_MUTEX_UNLOCK(&ltc_prng_mutex);
   return CRYPT_ERROR;
}

/* $Source: /cvs/libtom/libtomcrypt/src/misc/crypt/crypt_unregister_prng.c,v $ */
/* $Revision: 1.6 $ */
/* $Date: 2006/11/01 09:28:17 $ */