| // SPDX-License-Identifier: BSD-2-Clause |
| /* 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. |
| */ |
| #include "tomcrypt_private.h" |
| |
| /** |
| @file crypt_cipher_is_valid.c |
| Determine if cipher is valid, Tom St Denis |
| */ |
| |
| /* |
| Test if a cipher index is valid |
| @param idx The index of the cipher to search for |
| @return CRYPT_OK if valid |
| */ |
| int cipher_is_valid(int idx) |
| { |
| LTC_MUTEX_LOCK(<c_cipher_mutex); |
| if (idx < 0 || idx >= TAB_SIZE || cipher_descriptor[idx] == NULL) { |
| LTC_MUTEX_UNLOCK(<c_cipher_mutex); |
| return CRYPT_INVALID_CIPHER; |
| } |
| LTC_MUTEX_UNLOCK(<c_cipher_mutex); |
| return CRYPT_OK; |
| } |
| |
| /* ref: $Format:%D$ */ |
| /* git commit: $Format:%H$ */ |
| /* commit time: $Format:%ai$ */ |