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/* 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.
*
* Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
*/
#include "tomcrypt.h"
/**
@file ecb_start.c
ECB implementation, start chain, Tom St Denis
*/
#ifdef LTC_ECB_MODE
/**
Initialize a ECB context
@param cipher The index of the cipher desired
@param key The secret key
@param keylen The length of the secret key (octets)
@param num_rounds Number of rounds in the cipher desired (0 for default)
@param ecb The ECB state to initialize
@return CRYPT_OK if successful
*/
int ecb_start(int cipher, const unsigned char *key, int keylen, int num_rounds, symmetric_ECB *ecb)
{
int err;
LTC_ARGCHK(key != NULL);
LTC_ARGCHK(ecb != NULL);
if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
return err;
}
ecb->cipher = cipher;
ecb->blocklen = cipher_descriptor[cipher].block_length;
return cipher_descriptor[cipher].setup(key, keylen, num_rounds, &ecb->key);
}
#endif
/* $Source: /cvs/libtom/libtomcrypt/src/modes/ecb/ecb_start.c,v $ */
/* $Revision: 1.5 $ */
/* $Date: 2006/06/29 01:51:34 $ */
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