37 lines
902 B
C
37 lines
902 B
C
/* LibTomCrypt, modular cryptographic library -- Tom St Denis
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*
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* LibTomCrypt is a library that provides various cryptographic
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* algorithms in a highly modular and flexible manner.
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*
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* The library is free for all purposes without any express
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* guarantee it works.
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*
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* Tom St Denis, tomstdenis@gmail.com, http://libtom.org
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*/
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#include "tomcrypt.h"
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/**
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@file crypt_cipher_is_valid.c
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Determine if cipher is valid, Tom St Denis
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*/
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/*
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Test if a cipher index is valid
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@param idx The index of the cipher to search for
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@return CRYPT_OK if valid
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*/
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int cipher_is_valid(int idx)
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{
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LTC_MUTEX_LOCK(<c_cipher_mutex);
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if (idx < 0 || idx >= TAB_SIZE || cipher_descriptor[idx].name == NULL) {
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LTC_MUTEX_UNLOCK(<c_cipher_mutex);
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return CRYPT_INVALID_CIPHER;
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}
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LTC_MUTEX_UNLOCK(<c_cipher_mutex);
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return CRYPT_OK;
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}
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/* $Source$ */
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/* $Revision$ */
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/* $Date$ */
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