view src/misc/crypt/crypt_prng_is_valid.c @ 210:4768b55c5240 libtomcrypt

propagate from branch 'au.asn.ucc.matt.ltc-orig' (head 33c416b902f1a44913d825bae7ad9a160f703ed3) to branch 'au.asn.ucc.matt.dropbear.ltc' (head 4d6aec6e6121e13f68c11c149b6579c41cb63e74)
author Matt Johnston <matt@ucc.asn.au>
date Wed, 06 Jul 2005 12:10:23 +0000 (2005-07-06)
parents 39d5d58461d6
children
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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, tomstdenis@gmail.com, http://libtomcrypt.org
 */
#include "tomcrypt.h"

/**
  @file crypt_prng_is_valid.c
  Determine if PRNG is valid, Tom St Denis
*/

/*
   Test if a PRNG index is valid
   @param idx   The index of the PRNG to search for
   @return CRYPT_OK if valid
*/
int prng_is_valid(int idx)
{
   LTC_MUTEX_LOCK(&ltc_prng_mutex);
   if (idx < 0 || idx >= TAB_SIZE || prng_descriptor[idx].name == NULL) {
      LTC_MUTEX_UNLOCK(&ltc_prng_mutex);
      return CRYPT_INVALID_PRNG;
   }
   LTC_MUTEX_UNLOCK(&ltc_prng_mutex);
   return CRYPT_OK;
}

/* $Source: /cvs/libtom/libtomcrypt/src/misc/crypt/crypt_prng_is_valid.c,v $ */
/* $Revision: 1.4 $ */
/* $Date: 2005/06/19 18:00:28 $ */