LCOV - code coverage report
Current view: top level - tests - hmac.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 65 108 60.2 %
Date: 2016-09-12 12:56:58 Functions: 4 6 66.7 %

          Line data    Source code
       1             : /* hmac.c -  HMAC regression tests
       2             :  *      Copyright (C) 2005 Free Software Foundation, Inc.
       3             :  *
       4             :  * This file is part of Libgcrypt.
       5             :  *
       6             :  * Libgcrypt is free software; you can redistribute it and/or modify
       7             :  * it under the terms of the GNU Lesser General Public License as
       8             :  * published by the Free Software Foundation; either version 2.1 of
       9             :  * the License, or (at your option) any later version.
      10             :  *
      11             :  * Libgcrypt is distributed in the hope that it will be useful,
      12             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14             :  * GNU Lesser General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU Lesser General Public
      17             :  * License along with this program; if not, write to the Free Software
      18             :  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
      19             :  */
      20             : 
      21             : #ifdef HAVE_CONFIG_H
      22             : #include <config.h>
      23             : #endif
      24             : #include <stdio.h>
      25             : #include <stdlib.h>
      26             : #include <string.h>
      27             : #include <stdarg.h>
      28             : 
      29             : #include "../src/gcrypt-int.h"
      30             : 
      31             : static int verbose;
      32             : static int error_count;
      33             : 
      34             : static void
      35           0 : fail (const char *format, ...)
      36             : {
      37             :   va_list arg_ptr;
      38             : 
      39           0 :   va_start (arg_ptr, format);
      40           0 :   vfprintf (stderr, format, arg_ptr);
      41           0 :   va_end (arg_ptr);
      42           0 :   error_count++;
      43           0 : }
      44             : 
      45             : static void
      46           0 : die (const char *format, ...)
      47             : {
      48             :   va_list arg_ptr;
      49             : 
      50           0 :   va_start (arg_ptr, format);
      51           0 :   vfprintf (stderr, format, arg_ptr);
      52           0 :   va_end (arg_ptr);
      53           0 :   exit (1);
      54             : }
      55             : 
      56             : 
      57             : 
      58             : static void
      59           4 : check_one_mac (int algo,
      60             :                const void *key, size_t keylen,
      61             :                const void *data, size_t datalen,
      62             :                const char *expect)
      63             : {
      64             :   gcry_md_hd_t hd;
      65             :   unsigned char *p;
      66             :   int mdlen;
      67             :   int i;
      68           4 :   gcry_error_t err = 0;
      69             : 
      70           4 :   err = gcry_md_open (&hd, algo, GCRY_MD_FLAG_HMAC);
      71           4 :   if (err)
      72             :     {
      73           0 :       fail ("algo %d, gcry_md_open failed: %s\n", algo, gpg_strerror (err));
      74           0 :       return;
      75             :     }
      76             : 
      77           4 :   mdlen = gcry_md_get_algo_dlen (algo);
      78           4 :   if (mdlen < 1 || mdlen > 500)
      79             :     {
      80           0 :       fail ("algo %d, gcry_md_get_algo_dlen failed: %d\n", algo, mdlen);
      81           0 :       return;
      82             :     }
      83             : 
      84           4 :   err = gcry_md_setkey (hd, key, keylen);
      85           4 :   if (err)
      86             :     {
      87           0 :       fail ("algo %d, gcry_md_setkey failed: %s\n", algo, gpg_strerror (err));
      88           0 :       return;
      89             :     }
      90             : 
      91           4 :   gcry_md_write (hd, data, datalen);
      92             : 
      93           4 :   p = gcry_md_read (hd, 0);
      94             : 
      95           4 :   if (memcmp (p, expect, mdlen))
      96             :     {
      97           0 :       printf ("computed: ");
      98           0 :       for (i = 0; i < mdlen; i++)
      99           0 :         printf ("%02x ", p[i] & 0xFF);
     100           0 :       printf ("\nexpected: ");
     101           0 :       for (i = 0; i < mdlen; i++)
     102           0 :         printf ("%02x ", expect[i] & 0xFF);
     103           0 :       printf ("\n");
     104             : 
     105           0 :       fail ("algo %d, MAC does not match\n", algo);
     106             :     }
     107             : 
     108           4 :   gcry_md_close (hd);
     109             : }
     110             : 
     111             : static void
     112           1 : check_hmac (void)
     113             : {
     114             :   unsigned char key[128];
     115             :   int i, j;
     116             : 
     117           1 :   if (verbose)
     118           0 :     fprintf (stderr, "checking FIPS-198a, A.1\n");
     119          65 :   for (i=0; i < 64; i++)
     120          64 :     key[i] = i;
     121           1 :   check_one_mac (GCRY_MD_SHA1, key, 64, "Sample #1", 9,
     122             :                  "\x4f\x4c\xa3\xd5\xd6\x8b\xa7\xcc\x0a\x12"
     123             :                  "\x08\xc9\xc6\x1e\x9c\x5d\xa0\x40\x3c\x0a");
     124             : 
     125           1 :   if (verbose)
     126           0 :     fprintf (stderr, "checking FIPS-198a, A.2\n");
     127          21 :   for (i=0, j=0x30; i < 20; i++)
     128          20 :     key[i] = j++;
     129           1 :   check_one_mac (GCRY_MD_SHA1, key, 20, "Sample #2", 9,
     130             :                  "\x09\x22\xd3\x40\x5f\xaa\x3d\x19\x4f\x82"
     131             :                  "\xa4\x58\x30\x73\x7d\x5c\xc6\xc7\x5d\x24");
     132             : 
     133           1 :   if (verbose)
     134           0 :     fprintf (stderr, "checking FIPS-198a, A.3\n");
     135         101 :   for (i=0, j=0x50; i < 100; i++)
     136         100 :     key[i] = j++;
     137           1 :   check_one_mac (GCRY_MD_SHA1, key, 100, "Sample #3", 9,
     138             :                  "\xbc\xf4\x1e\xab\x8b\xb2\xd8\x02\xf3\xd0"
     139             :                  "\x5c\xaf\x7c\xb0\x92\xec\xf8\xd1\xa3\xaa");
     140             : 
     141           1 :   if (verbose)
     142           0 :     fprintf (stderr, "checking FIPS-198a, A.4\n");
     143          50 :   for (i=0, j=0x70; i < 49; i++)
     144          49 :     key[i] = j++;
     145           1 :   check_one_mac (GCRY_MD_SHA1, key, 49, "Sample #4", 9,
     146             :                  "\x9e\xa8\x86\xef\xe2\x68\xdb\xec\xce\x42"
     147             :                  "\x0c\x75\x24\xdf\x32\xe0\x75\x1a\x2a\x26");
     148             : 
     149           1 : }
     150             : 
     151             : 
     152             : static void
     153           1 : check_hmac_multi (void)
     154             : {
     155             :   gpg_error_t err;
     156             :   unsigned char key[128];
     157           1 :   const char msg[] = "Sample #1";
     158           1 :   const char mac[] = ("\x4f\x4c\xa3\xd5\xd6\x8b\xa7\xcc\x0a\x12"
     159             :                       "\x08\xc9\xc6\x1e\x9c\x5d\xa0\x40\x3c\x0a");
     160             :   gcry_buffer_t iov[4];
     161             :   char digest[64];
     162             :   int i;
     163             :   int algo;
     164             :   int maclen;
     165             : 
     166           1 :   if (verbose)
     167           0 :     fprintf (stderr, "checking HMAC using multiple buffers\n");
     168          65 :   for (i=0; i < 64; i++)
     169          64 :     key[i] = i;
     170             : 
     171           1 :   memset (iov, 0, sizeof iov);
     172           1 :   iov[0].data = key;
     173           1 :   iov[0].len = 64;
     174           1 :   iov[1].data = (void*)msg;
     175           1 :   iov[1].off = 0;
     176           1 :   iov[1].len = 3;
     177           1 :   iov[2].data = (void*)msg;
     178           1 :   iov[2].off = 3;
     179           1 :   iov[2].len = 1;
     180           1 :   iov[3].data = (void*)msg;
     181           1 :   iov[3].off = 4;
     182           1 :   iov[3].len = 5;
     183             : 
     184           1 :   algo = GCRY_MD_SHA1;
     185           1 :   maclen = gcry_md_get_algo_dlen (algo);
     186           1 :   err = gcry_md_hash_buffers (algo, GCRY_MD_FLAG_HMAC, digest, iov, 4);
     187           1 :   if (err)
     188             :     {
     189           0 :       fail ("gcry_md_hash_buffers failed: %s\n", algo, gpg_strerror (err));
     190           1 :       return;
     191             :     }
     192             : 
     193           1 :   if (memcmp (digest, mac, maclen))
     194             :     {
     195           0 :       printf ("computed: ");
     196           0 :       for (i = 0; i < maclen; i++)
     197           0 :         printf ("%02x ", digest[i] & 0xFF);
     198           0 :       printf ("\nexpected: ");
     199           0 :       for (i = 0; i < maclen; i++)
     200           0 :         printf ("%02x ", mac[i] & 0xFF);
     201           0 :       printf ("\n");
     202             : 
     203           0 :       fail ("gcry_md_hash_buffers, algo %d, MAC does not match\n", algo);
     204             :     }
     205             : }
     206             : 
     207             : 
     208             : int
     209           1 : main (int argc, char **argv)
     210             : {
     211           1 :   int debug = 0;
     212             : 
     213           1 :   if (argc > 1 && !strcmp (argv[1], "--verbose"))
     214           0 :     verbose = 1;
     215           1 :   else if (argc > 1 && !strcmp (argv[1], "--debug"))
     216           0 :     verbose = debug = 1;
     217             : 
     218           1 :   if (!gcry_check_version (GCRYPT_VERSION))
     219           0 :     die ("version mismatch\n");
     220             : 
     221           1 :   gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
     222           1 :   gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
     223           1 :   if (debug)
     224           0 :     gcry_control (GCRYCTL_SET_DEBUG_FLAGS, 1u, 0);
     225           1 :   check_hmac ();
     226           1 :   check_hmac_multi ();
     227             : 
     228           1 :   return error_count ? 1 : 0;
     229             : }

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