view libtomcrypt/src/mac/pmac/pmac_file.c @ 475:52a644e7b8e1 pubkey-options

* Patch from Frédéric Moulins adding options to authorized_keys. Needs review.
author Matt Johnston <>
date Mon, 08 Sep 2008 15:14:02 +0000
parents 0cbe8f6dbf9e
children f849a5ca2efc
line wrap: on
line source
/* 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],
#include "tomcrypt.h"

   @file pmac_file.c
   PMAC implementation, process a file, by Tom St Denis 

#ifdef LTC_PMAC

   PMAC a file 
   @param cipher       The index of the cipher desired
   @param key          The secret key
   @param keylen       The length of the secret key (octets)
   @param filename     The name of the file to send through PMAC
   @param out          [out] Destination for the authentication tag
   @param outlen       [in/out] Max size and resulting size of the authentication tag
   @return CRYPT_OK if successful, CRYPT_NOP if file support has been disabled
int pmac_file(int cipher, 
              const unsigned char *key, unsigned long keylen,
              const char *filename, 
                    unsigned char *out, unsigned long *outlen)
#ifdef LTC_NO_FILE
   return CRYPT_NOP;
   int err, x;
   pmac_state pmac;
   FILE *in;
   unsigned char buf[512];

   LTC_ARGCHK(key      != NULL);
   LTC_ARGCHK(filename != NULL);
   LTC_ARGCHK(out      != NULL);
   LTC_ARGCHK(outlen   != NULL);

   in = fopen(filename, "rb");
   if (in == NULL) {

   if ((err = pmac_init(&pmac, cipher, key, keylen)) != CRYPT_OK) {
      return err;

   do {
      x = fread(buf, 1, sizeof(buf), in);
      if ((err = pmac_process(&pmac, buf, x)) != CRYPT_OK) {
         return err;
   } while (x == sizeof(buf));

   if ((err = pmac_done(&pmac, out, outlen)) != CRYPT_OK) {
      return err;

   zeromem(buf, sizeof(buf));

   return CRYPT_OK;


/* $Source: /cvs/libtom/libtomcrypt/src/mac/pmac/pmac_file.c,v $ */
/* $Revision: 1.5 $ */
/* $Date: 2006/11/03 00:39:49 $ */