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comparison libtomcrypt/src/misc/crypt/crypt_prng_is_valid.c @ 399:a707e6148060

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merge of '5fdf69ca60d1683cdd9f4c2595134bed26394834' and '6b61c50f4cf888bea302ac8fcf5dbb573b443251'
author Matt Johnston <matt@ucc.asn.au>
date Sat, 03 Feb 2007 08:20:34 +0000
parents 0cbe8f6dbf9e
children f849a5ca2efc
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394:17d097fc111c 399:a707e6148060
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, [email protected], http://libtomcrypt.com
10 */
11 #include "tomcrypt.h"
12
13 /**
14 @file crypt_prng_is_valid.c
15 Determine if PRNG is valid, Tom St Denis
16 */
17
18 /*
19 Test if a PRNG index is valid
20 @param idx The index of the PRNG to search for
21 @return CRYPT_OK if valid
22 */
23 int prng_is_valid(int idx)
24 {
25 LTC_MUTEX_LOCK(&ltc_prng_mutex);
26 if (idx < 0 || idx >= TAB_SIZE || prng_descriptor[idx].name == NULL) {
27 LTC_MUTEX_UNLOCK(&ltc_prng_mutex);
28 return CRYPT_INVALID_PRNG;
29 }
30 LTC_MUTEX_UNLOCK(&ltc_prng_mutex);
31 return CRYPT_OK;
32 }
33
34 /* $Source: /cvs/libtom/libtomcrypt/src/misc/crypt/crypt_prng_is_valid.c,v $ */
35 /* $Revision: 1.5 $ */
36 /* $Date: 2006/03/31 14:15:35 $ */