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, tomstdenis (at) gmail.com, http://libtomcrypt.com 10 */ 11 #include "tomcrypt.h" 12 13 /** 14 @file ecb_start.c 15 ECB implementation, start chain, Tom St Denis 16 */ 17 18 19 #ifdef LTC_ECB_MODE 20 21 /** 22 Initialize a ECB context 23 @param cipher The index of the cipher desired 24 @param key The secret key 25 @param keylen The length of the secret key (octets) 26 @param num_rounds Number of rounds in the cipher desired (0 for default) 27 @param ecb The ECB state to initialize 28 @return CRYPT_OK if successful 29 */ 30 int ecb_start(int cipher, const unsigned char *key, int keylen, int num_rounds, symmetric_ECB *ecb) 31 { 32 int err; 33 LTC_ARGCHK(key != NULL); 34 LTC_ARGCHK(ecb != NULL); 35 36 if ((err = cipher_is_valid(cipher)) != CRYPT_OK) { 37 return err; 38 } 39 ecb->cipher = cipher; 40 ecb->blocklen = cipher_descriptor[cipher].block_length; 41 return cipher_descriptor[cipher].setup(key, keylen, num_rounds, &ecb->key); 42 } 43 44 #endif 45 46 /* $Source: /cvs/libtom/libtomcrypt/src/modes/ecb/ecb_start.c,v $ */ 47 /* $Revision: 1.5 $ */ 48 /* $Date: 2006/06/29 01:51:34 $ */ 49
