1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis */ 2 /* SPDX-License-Identifier: Unlicense */ 3 #include "tomcrypt_private.h" 4 5 /** 6 @file crypt_find_cipher_id.c 7 Find cipher by ID, Tom St Denis 8 */ 9 10 /** 11 Find a cipher by ID number 12 @param ID The ID (not same as index) of the cipher to find 13 @return >= 0 if found, -1 if not present 14 */ find_cipher_id(unsigned char ID)15int find_cipher_id(unsigned char ID) 16 { 17 int x; 18 LTC_MUTEX_LOCK(<c_cipher_mutex); 19 for (x = 0; x < TAB_SIZE && cipher_descriptor[x] != NULL; x++) { 20 if (cipher_descriptor[x]->ID == ID) { 21 LTC_MUTEX_UNLOCK(<c_cipher_mutex); 22 return x; 23 } 24 } 25 LTC_MUTEX_UNLOCK(<c_cipher_mutex); 26 return -1; 27 } 28