1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
/*
* Copyright (C) 2017-2019 Red Hat, Inc.
*
* Author: Nikos Mavrogiannopoulos, Daiki Ueno
*
* This file is part of GnuTLS.
*
* GnuTLS is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuTLS 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GnuTLS; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#ifndef _WIN32
# include <netinet/in.h>
# include <sys/socket.h>
# include <arpa/inet.h>
#endif
#include <unistd.h>
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
#include <gnutls/abstract.h>
#include "utils.h"
/* verifies whether the sign-data and verify-data APIs
* operate as expected with deterministic ECDSA/DSA (RFC 6979) */
static void tls_log_func(int level, const char *str)
{
fprintf(stderr, "<%d> %s", level, str);
}
struct _key_tests_st {
const char *name;
gnutls_datum_t key;
gnutls_datum_t msg;
gnutls_datum_t sig;
gnutls_pk_algorithm_t pk;
gnutls_digest_algorithm_t digest;
gnutls_sign_algorithm_t sigalgo;
unsigned int sign_flags;
};
/* Test vectors from RFC 6979 */
static const char dsa_privkey_rfc6979[] =
"-----BEGIN DSA PRIVATE KEY-----\n"
"MIIBugIBAAKBgQCG9coD3P6yJQY/+DCgx2m53Z1hU62R184n94fEMni0R+ZTO4ax\n"
"i+1uiki3hKFMJSxb4Nv2C4bWOFvS8S+3Y+2Ic6v9P1ui4KjApZCC6sBWk15Sna98\n"
"YQRniZx3re38hGyIGHC3sZsrWPm+BSGhcALjvda4ZoXukLPZobAreCsXeQIVAJlv\n"
"ln9sjjiNnijQHiBfupV6VpixAoGAB7D5JUYVC2JRS7dx4qDAzjh/A72mxWtQUgn/\n"
"Jf08Ez2Ju82X6QTgkRTZp9796t/JB46lRNLkAa7sxAu5+794/YeZWhChwny3eJtZ\n"
"S6fvtcQyap/lmgcOE223cXVGStykF75dzi9A0QpGo6OUPyarf9nAOY/4x27gpWgm\n"
"qKiPHb0CgYBd9eAd7THQKX4nThaRwZL+WGj++eGahHdkVLEAzxb2U5IZWji5BSPi\n"
"VC7mGHHARAy4fDIvxLTS7F4efsdm4b6NTOk1Q33BHDyP1CYziTPr/nOcs0ZfTTZo\n"
"xeRzUIJTseaC9ly9xPrpPC6iEjkOVJBahuIiMXC0Tqp9pd2f/Pt/OwIUQRYCyxmm\n"
"zMNElNedmO8eftWvJfc=\n"
"-----END DSA PRIVATE KEY-----\n";
static const char ecdsa_secp256r1_privkey_rfc6979[] =
"-----BEGIN EC PRIVATE KEY-----\n"
"MHgCAQEEIQDJr6nYRbp1FmtcIVdnsdaTTlDD2zbomxJ7imIrEg9nIaAKBggqhkjO\n"
"PQMBB6FEA0IABGD+1LolWp0xyWHrdMY1bWjASbiSO2H6bOZpYi5g8p+2eQP+EAi4\n"
"vJmkGunpVii8ZPLxsgwtfp9Rd6PClNRGIpk=\n"
"-----END EC PRIVATE KEY-----\n";
static const char sample[] = "sample";
static const
struct _key_tests_st tests[] = {
{
.name = "dsa key",
.key = {(void *) dsa_privkey_rfc6979, sizeof(dsa_privkey_rfc6979)-1},
.msg = {(void *) sample, sizeof(sample)-1},
.sig = {(void *) "\x30\x2d\x02\x15\x00\x81\xf2\xf5\x85\x0b\xe5\xbc\x12\x3c\x43\xf7\x1a\x30\x33\xe9\x38\x46\x11\xc5\x45\x02\x14\x4c\xdd\x91\x4b\x65\xeb\x6c\x66\xa8\xaa\xad\x27\x29\x9b\xee\x6b\x03\x5f\x5e\x89", 47},
.pk = GNUTLS_PK_DSA,
.digest = GNUTLS_DIG_SHA256,
.sigalgo = GNUTLS_SIGN_DSA_SHA256,
.sign_flags = GNUTLS_PRIVKEY_FLAG_REPRODUCIBLE
},
{
.name = "ecdsa key",
.key = {(void *) ecdsa_secp256r1_privkey_rfc6979, sizeof(ecdsa_secp256r1_privkey_rfc6979)-1},
.msg = {(void *) sample, sizeof(sample)-1},
.sig = {(void *) "\x30\x46\x02\x21\x00\xef\xd4\x8b\x2a\xac\xb6\xa8\xfd\x11\x40\xdd\x9c\xd4\x5e\x81\xd6\x9d\x2c\x87\x7b\x56\xaa\xf9\x91\xc3\x4d\x0e\xa8\x4e\xaf\x37\x16\x02\x21\x00\xf7\xcb\x1c\x94\x2d\x65\x7c\x41\xd4\x36\xc7\xa1\xb6\xe2\x9f\x65\xf3\xe9\x00\xdb\xb9\xaf\xf4\x06\x4d\xc4\xab\x2f\x84\x3a\xcd\xa8", 72},
.pk = GNUTLS_PK_ECDSA,
.digest = GNUTLS_DIG_SHA256,
.sigalgo = GNUTLS_SIGN_ECDSA_SECP256R1_SHA256,
.sign_flags = GNUTLS_PRIVKEY_FLAG_REPRODUCIBLE
},
{
.name = "ecdsa key",
.key = {(void *) ecdsa_secp256r1_privkey_rfc6979, sizeof(ecdsa_secp256r1_privkey_rfc6979)-1},
.msg = {(void *) sample, sizeof(sample)-1},
.sig = {(void *) "\x30\x46\x02\x21\x00\xef\xd4\x8b\x2a\xac\xb6\xa8\xfd\x11\x40\xdd\x9c\xd4\x5e\x81\xd6\x9d\x2c\x87\x7b\x56\xaa\xf9\x91\xc3\x4d\x0e\xa8\x4e\xaf\x37\x16\x02\x21\x00\xf7\xcb\x1c\x94\x2d\x65\x7c\x41\xd4\x36\xc7\xa1\xb6\xe2\x9f\x65\xf3\xe9\x00\xdb\xb9\xaf\xf4\x06\x4d\xc4\xab\x2f\x84\x3a\xcd\xa8", 72},
.pk = GNUTLS_PK_ECDSA,
.digest = GNUTLS_DIG_SHA256,
.sigalgo = GNUTLS_SIGN_ECDSA_SHA256,
.sign_flags = GNUTLS_PRIVKEY_FLAG_REPRODUCIBLE
},
{
.name = "ecdsa key (q bits < h bits)",
.key = {(void *) ecdsa_secp256r1_privkey_rfc6979, sizeof(ecdsa_secp256r1_privkey_rfc6979)-1},
.msg = {(void *) sample, sizeof(sample)-1},
.sig = {(void *) "\x30\x44\x02\x20\x0e\xaf\xea\x03\x9b\x20\xe9\xb4\x23\x09\xfb\x1d\x89\xe2\x13\x05\x7c\xbf\x97\x3d\xc0\xcf\xc8\xf1\x29\xed\xdd\xc8\x00\xef\x77\x19\x02\x20\x48\x61\xf0\x49\x1e\x69\x98\xb9\x45\x51\x93\xe3\x4e\x7b\x0d\x28\x4d\xdd\x71\x49\xa7\x4b\x95\xb9\x26\x1f\x13\xab\xde\x94\x09\x54", 70},
.pk = GNUTLS_PK_ECDSA,
.digest = GNUTLS_DIG_SHA384,
.sigalgo = GNUTLS_SIGN_ECDSA_SHA384,
.sign_flags = GNUTLS_PRIVKEY_FLAG_REPRODUCIBLE
},
{
.name = "ecdsa key (q bits > h bits)",
.key = {(void *) ecdsa_secp256r1_privkey_rfc6979, sizeof(ecdsa_secp256r1_privkey_rfc6979)-1},
.msg = {(void *) sample, sizeof(sample)-1},
.sig = {(void *) "\x30\x45\x02\x20\x53\xb2\xff\xf5\xd1\x75\x2b\x2c\x68\x9d\xf2\x57\xc0\x4c\x40\xa5\x87\xfa\xba\xbb\x3f\x6f\xc2\x70\x2f\x13\x43\xaf\x7c\xa9\xaa\x3f\x02\x21\x00\xb9\xaf\xb6\x4f\xdc\x03\xdc\x1a\x13\x1c\x7d\x23\x86\xd1\x1e\x34\x9f\x07\x0a\xa4\x32\xa4\xac\xc9\x18\xbe\xa9\x88\xbf\x75\xc7\x4c", 71},
.pk = GNUTLS_PK_ECDSA,
.digest = GNUTLS_DIG_SHA224,
.sigalgo = GNUTLS_SIGN_ECDSA_SHA224,
.sign_flags = GNUTLS_PRIVKEY_FLAG_REPRODUCIBLE
}
};
#define testfail(fmt, ...) \
fail("%s: "fmt, tests[i].name, ##__VA_ARGS__)
void doit(void)
{
gnutls_pubkey_t pubkey;
gnutls_privkey_t privkey;
gnutls_datum_t signature;
int ret;
size_t i;
global_init();
gnutls_global_set_log_function(tls_log_func);
if (debug)
gnutls_global_set_log_level(6);
for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) {
success("testing: %s - %s", tests[i].name, gnutls_sign_algorithm_get_name(tests[i].sigalgo));
ret = gnutls_pubkey_init(&pubkey);
if (ret < 0)
testfail("gnutls_pubkey_init\n");
ret = gnutls_privkey_init(&privkey);
if (ret < 0)
testfail("gnutls_privkey_init\n");
signature.data = NULL;
signature.size = 0;
ret = gnutls_privkey_import_x509_raw(privkey, &tests[i].key, GNUTLS_X509_FMT_PEM, NULL, 0);
if (ret < 0)
testfail("gnutls_privkey_import_x509_raw\n");
ret = gnutls_privkey_sign_data(privkey, tests[i].digest, tests[i].sign_flags,
&tests[i].msg, &signature);
if (gnutls_fips140_mode_enabled()) {
/* deterministic ECDSA/DSA is prohibited under FIPS */
if (ret != GNUTLS_E_INVALID_REQUEST)
testfail("gnutls_privkey_sign_data unexpectedly succeeds\n");
success(" - skipping\n");
goto next;
} else {
if (ret < 0)
testfail("gnutls_privkey_sign_data\n");
}
if (signature.size != tests[i].sig.size ||
memcmp(signature.data, tests[i].sig.data, signature.size) != 0)
testfail("signature does not match");
ret = gnutls_pubkey_import_privkey(pubkey, privkey, 0, 0);
if (ret < 0)
testfail("gnutls_pubkey_import_privkey\n");
ret =
gnutls_pubkey_verify_data2(pubkey, tests[i].sigalgo, 0, &tests[i].msg,
&signature);
if (ret < 0)
testfail("gnutls_pubkey_verify_data2\n");
success(" - pass");
next:
gnutls_free(signature.data);
gnutls_privkey_deinit(privkey);
gnutls_pubkey_deinit(pubkey);
}
gnutls_global_deinit();
}
|
