Line data Source code
1 : /* curves.c - ECC curves regression tests
2 : * Copyright (C) 2011 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 : /* Number of curves defined in ../cipger/ecc.c */
32 : #define N_CURVES 22
33 :
34 : /* A real world sample public key. */
35 : static char const sample_key_1[] =
36 : "(public-key\n"
37 : " (ecdsa\n"
38 : " (p #00FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF#)\n"
39 : " (a #00FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC#)\n"
40 : " (b #5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B#)\n"
41 : " (g #046B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296"
42 : "4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5#)\n"
43 : " (n #00FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551#)\n"
44 : " (h #000000000000000000000000000000000000000000000000000000000000000001#)\n"
45 : " (q #0442B927242237639A36CE9221B340DB1A9AB76DF2FE3E171277F6A4023DED146EE"
46 : "86525E38CCECFF3FB8D152CC6334F70D23A525175C1BCBDDE6E023B2228770E#)\n"
47 : " ))";
48 : static char const sample_key_1_curve[] = "NIST P-256";
49 : static unsigned int sample_key_1_nbits = 256;
50 :
51 : /* A made up sample public key. */
52 : static char const sample_key_2[] =
53 : "(public-key\n"
54 : " (ecdh\n"
55 : " (p #00e95e4a5f737059dc60dfc7ad95b3d8139515620f#)\n"
56 : " (a #340e7be2a280eb74e2be61bada745d97e8f7c300#)\n"
57 : " (b #1e589a8595423412134faa2dbdec95c8d8675e58#)\n"
58 : " (g #04bed5af16ea3f6a4f62938c4631eb5af7bdbcdbc3"
59 : "1667cb477a1a8ec338f94741669c976316da6321#)\n"
60 : " (n #00e95e4a5f737059dc60df5991d45029409e60fc09#)\n"
61 : " (h #000000000000000000000000000000000000000000000000000000000000000001#)\n"
62 : " (q #041111111111111111111111111111111111111111"
63 : "2222222222222222222222222222222222222222#)\n"
64 : " ))";
65 : static char const sample_key_2_curve[] = "brainpoolP160r1";
66 : static unsigned int sample_key_2_nbits = 160;
67 :
68 :
69 : /* Program option flags. */
70 : static int verbose;
71 : static int error_count;
72 :
73 : static void
74 0 : fail (const char *format, ...)
75 : {
76 : va_list arg_ptr;
77 :
78 0 : va_start (arg_ptr, format);
79 0 : vfprintf (stderr, format, arg_ptr);
80 0 : va_end (arg_ptr);
81 0 : error_count++;
82 0 : }
83 :
84 : static void
85 0 : die (const char *format, ...)
86 : {
87 : va_list arg_ptr;
88 :
89 0 : va_start (arg_ptr, format);
90 0 : vfprintf (stderr, format, arg_ptr);
91 0 : va_end (arg_ptr);
92 0 : exit (1);
93 : }
94 :
95 :
96 : static void
97 1 : list_curves (void)
98 : {
99 : int idx;
100 : const char *name;
101 : unsigned int nbits;
102 :
103 23 : for (idx=0; (name = gcry_pk_get_curve (NULL, idx, &nbits)); idx++)
104 : {
105 22 : if (verbose)
106 0 : printf ("%s - %u bits\n", name, nbits);
107 : }
108 1 : if (idx != N_CURVES)
109 0 : fail ("expected %d curves but got %d\n", N_CURVES, idx);
110 1 : if (gcry_pk_get_curve (NULL, -1, NULL))
111 0 : fail ("curve iteration failed\n");
112 1 : }
113 :
114 :
115 : static void
116 1 : check_matching (void)
117 : {
118 : gpg_error_t err;
119 : gcry_sexp_t key;
120 : const char *name;
121 : unsigned int nbits;
122 :
123 1 : err = gcry_sexp_new (&key, sample_key_1, 0, 1);
124 1 : if (err)
125 0 : die ("parsing s-expression string failed: %s\n", gpg_strerror (err));
126 1 : name = gcry_pk_get_curve (key, 0, &nbits);
127 1 : if (!name)
128 0 : fail ("curve name not found for sample_key_1\n");
129 1 : else if (strcmp (name, sample_key_1_curve))
130 0 : fail ("expected curve name %s but got %s for sample_key_1\n",
131 : sample_key_1_curve, name);
132 1 : else if (nbits != sample_key_1_nbits)
133 0 : fail ("expected curve size %u but got %u for sample_key_1\n",
134 : sample_key_1_nbits, nbits);
135 :
136 1 : gcry_sexp_release (key);
137 :
138 1 : err = gcry_sexp_new (&key, sample_key_2, 0, 1);
139 1 : if (err)
140 0 : die ("parsing s-expression string failed: %s\n", gpg_strerror (err));
141 1 : name = gcry_pk_get_curve (key, 0, &nbits);
142 1 : if (!name)
143 0 : fail ("curve name not found for sample_key_2\n");
144 1 : else if (strcmp (name, sample_key_2_curve))
145 0 : fail ("expected curve name %s but got %s for sample_key_2\n",
146 : sample_key_2_curve, name);
147 1 : else if (nbits != sample_key_2_nbits)
148 0 : fail ("expected curve size %u but got %u for sample_key_2\n",
149 : sample_key_2_nbits, nbits);
150 :
151 1 : gcry_sexp_release (key);
152 1 : }
153 :
154 :
155 : static void
156 1 : check_get_params (void)
157 : {
158 : gcry_sexp_t param;
159 : const char *name;
160 :
161 1 : param = gcry_pk_get_param (GCRY_PK_ECDSA, sample_key_1_curve);
162 1 : if (!param)
163 0 : fail ("error gerring parameters for `%s'\n", sample_key_1_curve);
164 :
165 1 : name = gcry_pk_get_curve (param, 0, NULL);
166 1 : if (!name)
167 0 : fail ("get_param: curve name not found for sample_key_1\n");
168 1 : else if (strcmp (name, sample_key_1_curve))
169 0 : fail ("get_param: expected curve name %s but got %s for sample_key_1\n",
170 : sample_key_1_curve, name);
171 :
172 1 : gcry_sexp_release (param);
173 :
174 :
175 1 : param = gcry_pk_get_param (GCRY_PK_ECDSA, sample_key_2_curve);
176 1 : if (!param)
177 0 : fail ("error gerring parameters for `%s'\n", sample_key_2_curve);
178 :
179 1 : name = gcry_pk_get_curve (param, 0, NULL);
180 1 : if (!name)
181 0 : fail ("get_param: curve name not found for sample_key_2\n");
182 1 : else if (strcmp (name, sample_key_2_curve))
183 0 : fail ("get_param: expected curve name %s but got %s for sample_key_2\n",
184 : sample_key_2_curve, name);
185 :
186 1 : gcry_sexp_release (param);
187 1 : }
188 :
189 :
190 : int
191 1 : main (int argc, char **argv)
192 : {
193 1 : int debug = 0;
194 :
195 1 : if (argc > 1 && !strcmp (argv[1], "--verbose"))
196 0 : verbose = 1;
197 1 : else if (argc > 1 && !strcmp (argv[1], "--debug"))
198 0 : verbose = debug = 1;
199 :
200 1 : if (!gcry_check_version (GCRYPT_VERSION))
201 0 : die ("version mismatch\n");
202 :
203 1 : gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
204 1 : gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
205 1 : if (debug)
206 0 : gcry_control (GCRYCTL_SET_DEBUG_FLAGS, 1u, 0);
207 1 : list_curves ();
208 1 : check_matching ();
209 1 : check_get_params ();
210 :
211 1 : return error_count ? 1 : 0;
212 : }
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