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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://libtom.org
#include "tomcrypt.h"

  @file f9_process.c
  f9 Support, Process a block through F9-MAC

#ifdef LTC_F9_MODE

/** f9-MAC a block of memory 
  @param cipher     Index of cipher to use
  @param key        [in]  Secret key
  @param keylen     Length of key in octets
  @param in         [in]  Message to MAC
  @param inlen      Length of input in octets
  @param out        [out] Destination for the MAC tag
  @param outlen     [in/out] Output size and final tag size
  Return CRYPT_OK on success.
int f9_memory(int cipher, 
               const unsigned char *key, unsigned long keylen,
               const unsigned char *in,  unsigned long inlen,
                     unsigned char *out, unsigned long *outlen)
   f9_state *f9;
   int         err;

   /* is the cipher valid? */
   if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
      return err;

   /* Use accelerator if found */
   if (cipher_descriptor[cipher].f9_memory != NULL) {
      return cipher_descriptor[cipher].f9_memory(key, keylen, in, inlen, out, outlen);

   f9 = XCALLOC(1, sizeof(*f9));
   if (f9 == NULL) {
      return CRYPT_MEM;

   if ((err = f9_init(f9, cipher, key, keylen)) != CRYPT_OK) {
     goto done;

   if ((err = f9_process(f9, in, inlen)) != CRYPT_OK) {
     goto done;

   err = f9_done(f9, out, outlen);
   return err;


/* $Source: /cvs/libtom/libtomcrypt/src/mac/f9/f9_memory.c,v $ */
/* $Revision: 1.5 $ */
/* $Date: 2006/12/28 01:27:23 $ */

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