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
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
|
/* mpitests.c - basic mpi tests
* Copyright (C) 2001, 2002, 2003, 2006 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, 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 <stdarg.h>
#ifdef _GCRYPT_IN_LIBGCRYPT
# include "../src/gcrypt.h"
#else
# include <gcrypt.h>
#endif
static int verbose;
static int debug;
static void
die (const char *format, ...)
{
va_list arg_ptr;
va_start (arg_ptr, format);
vfprintf (stderr, format, arg_ptr);
va_end (arg_ptr);
exit (1);
}
/* Set up some test patterns */
/* 48 bytes with value 1: this results in 8 limbs for 64bit limbs, 16limb for 32 bit limbs */
unsigned char ones[] = {
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01
};
/* 48 bytes with value 2: this results in 8 limbs for 64bit limbs, 16limb for 32 bit limbs */
unsigned char twos[] = {
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02
};
/* 48 bytes with value 3: this results in 8 limbs for 64bit limbs, 16limb for 32 bit limbs */
unsigned char threes[] = {
0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03
};
/* 48 bytes with value 0x80: this results in 8 limbs for 64bit limbs, 16limb for 32 bit limbs */
unsigned char eighties[] = {
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80
};
/* 48 bytes with value 0xff: this results in 8 limbs for 64bit limbs, 16limb for 32 bit limbs */
unsigned char manyff[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
static int
test_add (void)
{
gcry_mpi_t one;
gcry_mpi_t two;
gcry_mpi_t ff;
gcry_mpi_t result;
unsigned char* pc;
gcry_mpi_scan(&one, GCRYMPI_FMT_USG, ones, sizeof(ones), NULL);
gcry_mpi_scan(&two, GCRYMPI_FMT_USG, twos, sizeof(twos), NULL);
gcry_mpi_scan(&ff, GCRYMPI_FMT_USG, manyff, sizeof(manyff), NULL);
result = gcry_mpi_new(0);
gcry_mpi_add(result, one, two);
gcry_mpi_aprint(GCRYMPI_FMT_HEX, &pc, NULL, result);
if (verbose)
printf("Result of one plus two:\n%s\n", pc);
gcry_free(pc);
gcry_mpi_add(result, ff, one);
gcry_mpi_aprint(GCRYMPI_FMT_HEX, &pc, NULL, result);
if (verbose)
printf("Result of ff plus one:\n%s\n", pc);
gcry_free(pc);
gcry_mpi_release(one);
gcry_mpi_release(two);
gcry_mpi_release(ff);
gcry_mpi_release(result);
return 1;
}
static int
test_sub (void)
{
gcry_mpi_t one;
gcry_mpi_t two;
gcry_mpi_t result;
unsigned char* pc;
gcry_mpi_scan(&one, GCRYMPI_FMT_USG, ones, sizeof(ones), NULL);
gcry_mpi_scan(&two, GCRYMPI_FMT_USG, twos, sizeof(twos), NULL);
result = gcry_mpi_new(0);
gcry_mpi_sub(result, two, one);
gcry_mpi_aprint(GCRYMPI_FMT_HEX, &pc, NULL, result);
if (verbose)
printf("Result of two minus one:\n%s\n", pc);
gcry_free(pc);
gcry_mpi_release(one);
gcry_mpi_release(two);
gcry_mpi_release(result);
return 1;
}
static int
test_mul (void)
{
gcry_mpi_t two;
gcry_mpi_t three;
gcry_mpi_t result;
unsigned char* pc;
gcry_mpi_scan(&two, GCRYMPI_FMT_USG, twos, sizeof(twos), NULL);
gcry_mpi_scan(&three, GCRYMPI_FMT_USG, threes, sizeof(threes), NULL);
result = gcry_mpi_new(0);
gcry_mpi_mul(result, two, three);
gcry_mpi_aprint(GCRYMPI_FMT_HEX, &pc, NULL, result);
if (verbose)
printf("Result of two mul three:\n%s\n", pc);
gcry_free(pc);
gcry_mpi_release(two);
gcry_mpi_release(three);
gcry_mpi_release(result);
return 1;
}
/* What we test here is that we don't overwrite our args and that
using thne same mpi for several args works. */
static int
test_powm (void)
{
int b_int = 17;
int e_int = 3;
int m_int = 19;
gcry_mpi_t base = gcry_mpi_set_ui (NULL, b_int);
gcry_mpi_t exp = gcry_mpi_set_ui (NULL, e_int);
gcry_mpi_t mod = gcry_mpi_set_ui (NULL, m_int);
gcry_mpi_t res = gcry_mpi_new (0);
gcry_mpi_powm (res, base, exp, mod);
if (gcry_mpi_cmp_ui (base, b_int))
die ("test_powm failed for base at %d\n", __LINE__);
if (gcry_mpi_cmp_ui (exp, e_int))
die ("test_powm_ui failed for exp at %d\n", __LINE__);
if (gcry_mpi_cmp_ui (mod, m_int))
die ("test_powm failed for mod at %d\n", __LINE__);
/* Check using base for the result. */
gcry_mpi_set_ui (base, b_int);
gcry_mpi_set_ui (exp, e_int);
gcry_mpi_set_ui(mod, m_int);
gcry_mpi_powm (base, base, exp, mod);
if (gcry_mpi_cmp (res, base))
die ("test_powm failed at %d\n", __LINE__);
if (gcry_mpi_cmp_ui (exp, e_int))
die ("test_powm_ui failed for exp at %d\n", __LINE__);
if (gcry_mpi_cmp_ui (mod, m_int))
die ("test_powm failed for mod at %d\n", __LINE__);
/* Check using exp for the result. */
gcry_mpi_set_ui (base, b_int);
gcry_mpi_set_ui (exp, e_int);
gcry_mpi_set_ui(mod, m_int);
gcry_mpi_powm (exp, base, exp, mod);
if (gcry_mpi_cmp (res, exp))
die ("test_powm failed at %d\n", __LINE__);
if (gcry_mpi_cmp_ui (base, b_int))
die ("test_powm failed for base at %d\n", __LINE__);
if (gcry_mpi_cmp_ui (mod, m_int))
die ("test_powm failed for mod at %d\n", __LINE__);
/* Check using mod for the result. */
gcry_mpi_set_ui (base, b_int);
gcry_mpi_set_ui (exp, e_int);
gcry_mpi_set_ui(mod, m_int);
gcry_mpi_powm (mod, base, exp, mod);
if (gcry_mpi_cmp (res, mod))
die ("test_powm failed at %d\n", __LINE__);
if (gcry_mpi_cmp_ui (base, b_int))
die ("test_powm failed for base at %d\n", __LINE__);
if (gcry_mpi_cmp_ui (exp, e_int))
die ("test_powm_ui failed for exp at %d\n", __LINE__);
/* Now check base ^ base mod mod. */
gcry_mpi_set_ui (base, b_int);
gcry_mpi_set_ui(mod, m_int);
gcry_mpi_powm (res, base, base, mod);
if (gcry_mpi_cmp_ui (base, b_int))
die ("test_powm failed for base at %d\n", __LINE__);
if (gcry_mpi_cmp_ui (mod, m_int))
die ("test_powm failed for mod at %d\n", __LINE__);
/* Check base ^ base mod mod with base as result. */
gcry_mpi_set_ui (base, b_int);
gcry_mpi_set_ui(mod, m_int);
gcry_mpi_powm (base, base, base, mod);
if (gcry_mpi_cmp (res, base))
die ("test_powm failed at %d\n", __LINE__);
if (gcry_mpi_cmp_ui (mod, m_int))
die ("test_powm failed for mod at %d\n", __LINE__);
/* Check base ^ base mod mod with mod as result. */
gcry_mpi_set_ui (base, b_int);
gcry_mpi_set_ui(mod, m_int);
gcry_mpi_powm (mod, base, base, mod);
if (gcry_mpi_cmp (res, mod))
die ("test_powm failed at %d\n", __LINE__);
if (gcry_mpi_cmp_ui (base, b_int))
die ("test_powm failed for base at %d\n", __LINE__);
/* Now check base ^ base mod base. */
gcry_mpi_set_ui (base, b_int);
gcry_mpi_powm (res, base, base, base);
if (gcry_mpi_cmp_ui (base, b_int))
die ("test_powm failed for base at %d\n", __LINE__);
/* Check base ^ base mod base with base as result. */
gcry_mpi_set_ui (base, b_int);
gcry_mpi_powm (base, base, base, base);
if (gcry_mpi_cmp (res, base))
die ("test_powm failed at %d\n", __LINE__);
/* Fixme: We should add the rest of the cases of course. */
return 1;
}
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))
{
fputs ("version mismatch\n", stderr);
exit (1);
}
gcry_control(GCRYCTL_DISABLE_SECMEM);
test_add ();
test_sub ();
test_mul ();
test_powm ();
return 0;
}
|
