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/* hmac.c - HMAC regression tests
* Copyright (C) 2005 Free Software Foundation, Inc.
*
* This file is part of Libgcrypt.
*
* Libgcrypt is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* Libgcrypt is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, see <https://www.gnu.org/licenses/>.
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#define PGM "hmac"
#include "t-common.h"
static void
check_one_mac (int algo,
const void *key, size_t keylen,
const void *data, size_t datalen,
const char *expect)
{
gcry_md_hd_t hd;
unsigned char *p;
int mdlen;
int i;
gcry_error_t err = 0;
err = gcry_md_open (&hd, algo, GCRY_MD_FLAG_HMAC);
if (err)
{
fail ("algo %d, gcry_md_open failed: %s\n", algo, gpg_strerror (err));
return;
}
mdlen = gcry_md_get_algo_dlen (algo);
if (mdlen < 1 || mdlen > 500)
{
fail ("algo %d, gcry_md_get_algo_dlen failed: %d\n", algo, mdlen);
return;
}
err = gcry_md_setkey (hd, key, keylen);
if (err)
{
fail ("algo %d, gcry_md_setkey failed: %s\n", algo, gpg_strerror (err));
return;
}
gcry_md_write (hd, data, datalen);
p = gcry_md_read (hd, 0);
if (memcmp (p, expect, mdlen))
{
printf ("computed: ");
for (i = 0; i < mdlen; i++)
printf ("%02x ", p[i] & 0xFF);
printf ("\nexpected: ");
for (i = 0; i < mdlen; i++)
printf ("%02x ", expect[i] & 0xFF);
printf ("\n");
fail ("algo %d, MAC does not match\n", algo);
}
gcry_md_close (hd);
}
static void
check_hmac (void)
{
unsigned char key[128];
int i, j;
if (verbose)
fprintf (stderr, "checking FIPS-198a, A.1\n");
for (i=0; i < 64; i++)
key[i] = i;
check_one_mac (GCRY_MD_SHA1, key, 64, "Sample #1", 9,
"\x4f\x4c\xa3\xd5\xd6\x8b\xa7\xcc\x0a\x12"
"\x08\xc9\xc6\x1e\x9c\x5d\xa0\x40\x3c\x0a");
if (verbose)
fprintf (stderr, "checking FIPS-198a, A.2\n");
for (i=0, j=0x30; i < 20; i++)
key[i] = j++;
check_one_mac (GCRY_MD_SHA1, key, 20, "Sample #2", 9,
"\x09\x22\xd3\x40\x5f\xaa\x3d\x19\x4f\x82"
"\xa4\x58\x30\x73\x7d\x5c\xc6\xc7\x5d\x24");
if (verbose)
fprintf (stderr, "checking FIPS-198a, A.3\n");
for (i=0, j=0x50; i < 100; i++)
key[i] = j++;
check_one_mac (GCRY_MD_SHA1, key, 100, "Sample #3", 9,
"\xbc\xf4\x1e\xab\x8b\xb2\xd8\x02\xf3\xd0"
"\x5c\xaf\x7c\xb0\x92\xec\xf8\xd1\xa3\xaa");
if (verbose)
fprintf (stderr, "checking FIPS-198a, A.4\n");
for (i=0, j=0x70; i < 49; i++)
key[i] = j++;
check_one_mac (GCRY_MD_SHA1, key, 49, "Sample #4", 9,
"\x9e\xa8\x86\xef\xe2\x68\xdb\xec\xce\x42"
"\x0c\x75\x24\xdf\x32\xe0\x75\x1a\x2a\x26");
}
static void
check_hmac_multi (void)
{
gpg_error_t err;
unsigned char key[128];
const char msg[] = "Sample #1";
const char mac[] = ("\x4f\x4c\xa3\xd5\xd6\x8b\xa7\xcc\x0a\x12"
"\x08\xc9\xc6\x1e\x9c\x5d\xa0\x40\x3c\x0a");
gcry_buffer_t iov[4];
char digest[64];
int i;
int algo;
int maclen;
if (verbose)
fprintf (stderr, "checking HMAC using multiple buffers\n");
for (i=0; i < 64; i++)
key[i] = i;
memset (iov, 0, sizeof iov);
iov[0].data = key;
iov[0].len = 64;
iov[1].data = (void*)msg;
iov[1].off = 0;
iov[1].len = 3;
iov[2].data = (void*)msg;
iov[2].off = 3;
iov[2].len = 1;
iov[3].data = (void*)msg;
iov[3].off = 4;
iov[3].len = 5;
algo = GCRY_MD_SHA1;
maclen = gcry_md_get_algo_dlen (algo);
err = gcry_md_hash_buffers (algo, GCRY_MD_FLAG_HMAC, digest, iov, 4);
if (err)
{
fail ("gcry_md_hash_buffers failed for algo %d: %s\n",
algo, gpg_strerror (err));
return;
}
if (memcmp (digest, mac, maclen))
{
printf ("computed: ");
for (i = 0; i < maclen; i++)
printf ("%02x ", digest[i] & 0xFF);
printf ("\nexpected: ");
for (i = 0; i < maclen; i++)
printf ("%02x ", mac[i] & 0xFF);
printf ("\n");
fail ("gcry_md_hash_buffers, algo %d, MAC does not match\n", algo);
}
}
int
main (int argc, char **argv)
{
if (argc > 1 && !strcmp (argv[1], "--verbose"))
verbose = 1;
else if (argc > 1 && !strcmp (argv[1], "--debug"))
verbose = debug = 1;
if (!gcry_check_version (GCRYPT_VERSION))
die ("version mismatch\n");
xgcry_control ((GCRYCTL_DISABLE_SECMEM, 0));
xgcry_control ((GCRYCTL_INITIALIZATION_FINISHED, 0));
if (debug)
xgcry_control ((GCRYCTL_SET_DEBUG_FLAGS, 1u, 0));
check_hmac ();
check_hmac_multi ();
return error_count ? 1 : 0;
}
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