/* 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.com */#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: 1.5 $ *//* $Date: 2006/03/31 14:15:35 $ */