view ofb_setiv.c @ 151:8fc624ea2521 libtomcrypt

Cleaning up various unused bits (des_*, rijndael, MDS for twofish)
author Matt Johnston <matt@ucc.asn.au>
date Mon, 20 Dec 2004 14:25:33 +0000
parents 6362d3854bb4
children
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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, [email protected], http://libtomcrypt.org
 */

#include "mycrypt.h"

#ifdef OFB

int ofb_setiv(const unsigned char *IV, unsigned long len, symmetric_OFB *ofb)
{
   int err;

   _ARGCHK(IV  != NULL);
   _ARGCHK(ofb != NULL);

   if ((err = cipher_is_valid(ofb->cipher)) != CRYPT_OK) {
       return err;
   }

   if (len != (unsigned long)ofb->blocklen) {
      return CRYPT_INVALID_ARG;
   }

   /* force next block */
   ofb->padlen = 0;
   cipher_descriptor[ofb->cipher].ecb_encrypt(IV, ofb->IV, &ofb->key);
   return CRYPT_OK;
}

#endif