/* 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, tomstdenis@gmail.com, http://libtomcrypt.org */#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 (memcmp(&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: 1.4 $ *//* $Date: 2005/06/19 18:00:28 $ */