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 : #define PGM "hmac"
30 : #include "t-common.h"
31 :
32 :
33 : static void
34 4 : check_one_mac (int algo,
35 : const void *key, size_t keylen,
36 : const void *data, size_t datalen,
37 : const char *expect)
38 : {
39 : gcry_md_hd_t hd;
40 : unsigned char *p;
41 : int mdlen;
42 : int i;
43 4 : gcry_error_t err = 0;
44 :
45 4 : err = gcry_md_open (&hd, algo, GCRY_MD_FLAG_HMAC);
46 4 : if (err)
47 : {
48 0 : fail ("algo %d, gcry_md_open failed: %s\n", algo, gpg_strerror (err));
49 0 : return;
50 : }
51 :
52 4 : mdlen = gcry_md_get_algo_dlen (algo);
53 4 : if (mdlen < 1 || mdlen > 500)
54 : {
55 0 : fail ("algo %d, gcry_md_get_algo_dlen failed: %d\n", algo, mdlen);
56 0 : return;
57 : }
58 :
59 4 : err = gcry_md_setkey (hd, key, keylen);
60 4 : if (err)
61 : {
62 0 : fail ("algo %d, gcry_md_setkey failed: %s\n", algo, gpg_strerror (err));
63 0 : return;
64 : }
65 :
66 4 : gcry_md_write (hd, data, datalen);
67 :
68 4 : p = gcry_md_read (hd, 0);
69 :
70 4 : if (memcmp (p, expect, mdlen))
71 : {
72 0 : printf ("computed: ");
73 0 : for (i = 0; i < mdlen; i++)
74 0 : printf ("%02x ", p[i] & 0xFF);
75 0 : printf ("\nexpected: ");
76 0 : for (i = 0; i < mdlen; i++)
77 0 : printf ("%02x ", expect[i] & 0xFF);
78 0 : printf ("\n");
79 :
80 0 : fail ("algo %d, MAC does not match\n", algo);
81 : }
82 :
83 4 : gcry_md_close (hd);
84 : }
85 :
86 : static void
87 1 : check_hmac (void)
88 : {
89 : unsigned char key[128];
90 : int i, j;
91 :
92 1 : if (verbose)
93 0 : fprintf (stderr, "checking FIPS-198a, A.1\n");
94 65 : for (i=0; i < 64; i++)
95 64 : key[i] = i;
96 1 : check_one_mac (GCRY_MD_SHA1, key, 64, "Sample #1", 9,
97 : "\x4f\x4c\xa3\xd5\xd6\x8b\xa7\xcc\x0a\x12"
98 : "\x08\xc9\xc6\x1e\x9c\x5d\xa0\x40\x3c\x0a");
99 :
100 1 : if (verbose)
101 0 : fprintf (stderr, "checking FIPS-198a, A.2\n");
102 21 : for (i=0, j=0x30; i < 20; i++)
103 20 : key[i] = j++;
104 1 : check_one_mac (GCRY_MD_SHA1, key, 20, "Sample #2", 9,
105 : "\x09\x22\xd3\x40\x5f\xaa\x3d\x19\x4f\x82"
106 : "\xa4\x58\x30\x73\x7d\x5c\xc6\xc7\x5d\x24");
107 :
108 1 : if (verbose)
109 0 : fprintf (stderr, "checking FIPS-198a, A.3\n");
110 101 : for (i=0, j=0x50; i < 100; i++)
111 100 : key[i] = j++;
112 1 : check_one_mac (GCRY_MD_SHA1, key, 100, "Sample #3", 9,
113 : "\xbc\xf4\x1e\xab\x8b\xb2\xd8\x02\xf3\xd0"
114 : "\x5c\xaf\x7c\xb0\x92\xec\xf8\xd1\xa3\xaa");
115 :
116 1 : if (verbose)
117 0 : fprintf (stderr, "checking FIPS-198a, A.4\n");
118 50 : for (i=0, j=0x70; i < 49; i++)
119 49 : key[i] = j++;
120 1 : check_one_mac (GCRY_MD_SHA1, key, 49, "Sample #4", 9,
121 : "\x9e\xa8\x86\xef\xe2\x68\xdb\xec\xce\x42"
122 : "\x0c\x75\x24\xdf\x32\xe0\x75\x1a\x2a\x26");
123 :
124 1 : }
125 :
126 :
127 : static void
128 1 : check_hmac_multi (void)
129 : {
130 : gpg_error_t err;
131 : unsigned char key[128];
132 1 : const char msg[] = "Sample #1";
133 1 : const char mac[] = ("\x4f\x4c\xa3\xd5\xd6\x8b\xa7\xcc\x0a\x12"
134 : "\x08\xc9\xc6\x1e\x9c\x5d\xa0\x40\x3c\x0a");
135 : gcry_buffer_t iov[4];
136 : char digest[64];
137 : int i;
138 : int algo;
139 : int maclen;
140 :
141 1 : if (verbose)
142 0 : fprintf (stderr, "checking HMAC using multiple buffers\n");
143 65 : for (i=0; i < 64; i++)
144 64 : key[i] = i;
145 :
146 1 : memset (iov, 0, sizeof iov);
147 1 : iov[0].data = key;
148 1 : iov[0].len = 64;
149 1 : iov[1].data = (void*)msg;
150 1 : iov[1].off = 0;
151 1 : iov[1].len = 3;
152 1 : iov[2].data = (void*)msg;
153 1 : iov[2].off = 3;
154 1 : iov[2].len = 1;
155 1 : iov[3].data = (void*)msg;
156 1 : iov[3].off = 4;
157 1 : iov[3].len = 5;
158 :
159 1 : algo = GCRY_MD_SHA1;
160 1 : maclen = gcry_md_get_algo_dlen (algo);
161 1 : err = gcry_md_hash_buffers (algo, GCRY_MD_FLAG_HMAC, digest, iov, 4);
162 1 : if (err)
163 : {
164 0 : fail ("gcry_md_hash_buffers failed for algo %d: %s\n",
165 : algo, gpg_strerror (err));
166 0 : return;
167 : }
168 :
169 1 : if (memcmp (digest, mac, maclen))
170 : {
171 0 : printf ("computed: ");
172 0 : for (i = 0; i < maclen; i++)
173 0 : printf ("%02x ", digest[i] & 0xFF);
174 0 : printf ("\nexpected: ");
175 0 : for (i = 0; i < maclen; i++)
176 0 : printf ("%02x ", mac[i] & 0xFF);
177 0 : printf ("\n");
178 :
179 0 : fail ("gcry_md_hash_buffers, algo %d, MAC does not match\n", algo);
180 : }
181 : }
182 :
183 :
184 : int
185 1 : main (int argc, char **argv)
186 : {
187 1 : if (argc > 1 && !strcmp (argv[1], "--verbose"))
188 0 : verbose = 1;
189 1 : else if (argc > 1 && !strcmp (argv[1], "--debug"))
190 0 : verbose = debug = 1;
191 :
192 1 : if (!gcry_check_version (GCRYPT_VERSION))
193 0 : die ("version mismatch\n");
194 :
195 1 : xgcry_control (GCRYCTL_DISABLE_SECMEM, 0);
196 1 : xgcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
197 1 : if (debug)
198 0 : xgcry_control (GCRYCTL_SET_DEBUG_FLAGS, 1u, 0);
199 1 : check_hmac ();
200 1 : check_hmac_multi ();
201 :
202 1 : return error_count ? 1 : 0;
203 : }
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