25 lines
636 B
C
25 lines
636 B
C
/* LibTomCrypt, modular cryptographic library -- Tom St Denis */
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/* SPDX-License-Identifier: Unlicense */
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#include "tomcrypt_private.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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