1 /* crypto/dh/dhtest.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59 /*
60 * Until the key-gen callbacks are modified to use newer prototypes, we allow
61 * deprecated functions for openssl-internal code
62 */
63 #ifdef OPENSSL_NO_DEPRECATED
64 # undef OPENSSL_NO_DEPRECATED
65 #endif
66
67 #include <stdio.h>
68 #include <stdlib.h>
69 #include <string.h>
70
71 #include "../e_os.h"
72
73 #include <openssl/crypto.h>
74 #include <openssl/bio.h>
75 #include <openssl/bn.h>
76 #include <openssl/rand.h>
77 #include <openssl/err.h>
78
79 #ifdef OPENSSL_NO_DH
main(int argc,char * argv[])80 int main(int argc, char *argv[])
81 {
82 printf("No DH support\n");
83 return (0);
84 }
85 #else
86 # include <openssl/dh.h>
87
88 # ifdef OPENSSL_SYS_WIN16
89 # define MS_CALLBACK _far _loadds
90 # else
91 # define MS_CALLBACK
92 # endif
93
94 static int MS_CALLBACK cb(int p, int n, BN_GENCB *arg);
95
96 static const char rnd_seed[] =
97 "string to make the random number generator think it has entropy";
98
main(int argc,char * argv[])99 int main(int argc, char *argv[])
100 {
101 BN_GENCB _cb;
102 DH *a;
103 DH *b = NULL;
104 char buf[12];
105 unsigned char *abuf = NULL, *bbuf = NULL;
106 int i, alen, blen, aout, bout, ret = 1;
107 BIO *out;
108
109 CRYPTO_malloc_debug_init();
110 CRYPTO_dbg_set_options(V_CRYPTO_MDEBUG_ALL);
111 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
112
113 # ifdef OPENSSL_SYS_WIN32
114 CRYPTO_malloc_init();
115 # endif
116
117 RAND_seed(rnd_seed, sizeof rnd_seed);
118
119 out = BIO_new(BIO_s_file());
120 if (out == NULL)
121 EXIT(1);
122 BIO_set_fp(out, stdout, BIO_NOCLOSE);
123
124 BN_GENCB_set(&_cb, &cb, out);
125 if (((a = DH_new()) == NULL) || !DH_generate_parameters_ex(a, 64,
126 DH_GENERATOR_5,
127 &_cb))
128 goto err;
129
130 if (!DH_check(a, &i))
131 goto err;
132 if (i & DH_CHECK_P_NOT_PRIME)
133 BIO_puts(out, "p value is not prime\n");
134 if (i & DH_CHECK_P_NOT_SAFE_PRIME)
135 BIO_puts(out, "p value is not a safe prime\n");
136 if (i & DH_UNABLE_TO_CHECK_GENERATOR)
137 BIO_puts(out, "unable to check the generator value\n");
138 if (i & DH_NOT_SUITABLE_GENERATOR)
139 BIO_puts(out, "the g value is not a generator\n");
140
141 BIO_puts(out, "\np =");
142 BN_print(out, a->p);
143 BIO_puts(out, "\ng =");
144 BN_print(out, a->g);
145 BIO_puts(out, "\n");
146
147 b = DH_new();
148 if (b == NULL)
149 goto err;
150
151 b->p = BN_dup(a->p);
152 b->g = BN_dup(a->g);
153 if ((b->p == NULL) || (b->g == NULL))
154 goto err;
155
156 /* Set a to run with normal modexp and b to use constant time */
157 a->flags &= ~DH_FLAG_NO_EXP_CONSTTIME;
158 b->flags |= DH_FLAG_NO_EXP_CONSTTIME;
159
160 if (!DH_generate_key(a))
161 goto err;
162 BIO_puts(out, "pri 1=");
163 BN_print(out, a->priv_key);
164 BIO_puts(out, "\npub 1=");
165 BN_print(out, a->pub_key);
166 BIO_puts(out, "\n");
167
168 if (!DH_generate_key(b))
169 goto err;
170 BIO_puts(out, "pri 2=");
171 BN_print(out, b->priv_key);
172 BIO_puts(out, "\npub 2=");
173 BN_print(out, b->pub_key);
174 BIO_puts(out, "\n");
175
176 alen = DH_size(a);
177 abuf = (unsigned char *)OPENSSL_malloc(alen);
178 aout = DH_compute_key(abuf, b->pub_key, a);
179
180 BIO_puts(out, "key1 =");
181 for (i = 0; i < aout; i++) {
182 snprintf(buf, sizeof(buf), "%02X",abuf[i]);
183 BIO_puts(out, buf);
184 }
185 BIO_puts(out, "\n");
186
187 blen = DH_size(b);
188 bbuf = (unsigned char *)OPENSSL_malloc(blen);
189 bout = DH_compute_key(bbuf, a->pub_key, b);
190
191 BIO_puts(out, "key2 =");
192 for (i = 0; i < bout; i++) {
193 snprintf(buf, sizeof(buf), "%02X",bbuf[i]);
194 BIO_puts(out, buf);
195 }
196 BIO_puts(out, "\n");
197 if ((aout < 4) || (bout != aout) || (memcmp(abuf, bbuf, aout) != 0)) {
198 fprintf(stderr, "Error in DH routines\n");
199 ret = 1;
200 } else
201 ret = 0;
202 err:
203 ERR_print_errors_fp(stderr);
204
205 if (abuf != NULL)
206 OPENSSL_free(abuf);
207 if (bbuf != NULL)
208 OPENSSL_free(bbuf);
209 if (b != NULL)
210 DH_free(b);
211 if (a != NULL)
212 DH_free(a);
213 BIO_free(out);
214 # ifdef OPENSSL_SYS_NETWARE
215 if (ret)
216 printf("ERROR: %d\n", ret);
217 # endif
218 EXIT(ret);
219 return (ret);
220 }
221
cb(int p,int n,BN_GENCB * arg)222 static int MS_CALLBACK cb(int p, int n, BN_GENCB *arg)
223 {
224 char c = '*';
225
226 if (p == 0)
227 c = '.';
228 if (p == 1)
229 c = '+';
230 if (p == 2)
231 c = '*';
232 if (p == 3)
233 c = '\n';
234 BIO_write(arg->arg, &c, 1);
235 (void)BIO_flush(arg->arg);
236 # ifdef LINT
237 p = n;
238 # endif
239 return 1;
240 }
241 #endif
242