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d02b48c6 | 1 | /* apps/gendh.c */ |
41918458 | 2 | /* obsoleted by dhparam.c */ |
58964a49 | 3 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
4 | * All rights reserved. |
5 | * | |
6 | * This package is an SSL implementation written | |
7 | * by Eric Young (eay@cryptsoft.com). | |
8 | * The implementation was written so as to conform with Netscapes SSL. | |
0f113f3e | 9 | * |
d02b48c6 RE |
10 | * This library is free for commercial and non-commercial use as long as |
11 | * the following conditions are aheared to. The following conditions | |
12 | * apply to all code found in this distribution, be it the RC4, RSA, | |
13 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
14 | * included with this distribution is covered by the same copyright terms | |
15 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
0f113f3e | 16 | * |
d02b48c6 RE |
17 | * Copyright remains Eric Young's, and as such any Copyright notices in |
18 | * the code are not to be removed. | |
19 | * If this package is used in a product, Eric Young should be given attribution | |
20 | * as the author of the parts of the library used. | |
21 | * This can be in the form of a textual message at program startup or | |
22 | * in documentation (online or textual) provided with the package. | |
0f113f3e | 23 | * |
d02b48c6 RE |
24 | * Redistribution and use in source and binary forms, with or without |
25 | * modification, are permitted provided that the following conditions | |
26 | * are met: | |
27 | * 1. Redistributions of source code must retain the copyright | |
28 | * notice, this list of conditions and the following disclaimer. | |
29 | * 2. Redistributions in binary form must reproduce the above copyright | |
30 | * notice, this list of conditions and the following disclaimer in the | |
31 | * documentation and/or other materials provided with the distribution. | |
32 | * 3. All advertising materials mentioning features or use of this software | |
33 | * must display the following acknowledgement: | |
34 | * "This product includes cryptographic software written by | |
35 | * Eric Young (eay@cryptsoft.com)" | |
36 | * The word 'cryptographic' can be left out if the rouines from the library | |
37 | * being used are not cryptographic related :-). | |
0f113f3e | 38 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
39 | * the apps directory (application code) you must include an acknowledgement: |
40 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 41 | * |
d02b48c6 RE |
42 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
43 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
44 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
45 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
46 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
47 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
48 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
49 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
50 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
51 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
52 | * SUCH DAMAGE. | |
0f113f3e | 53 | * |
d02b48c6 RE |
54 | * The licence and distribution terms for any publically available version or |
55 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
56 | * copied and put under another distribution licence | |
57 | * [including the GNU Public Licence.] | |
58 | */ | |
59 | ||
3eeaab4b | 60 | #include <openssl/opensslconf.h> |
5daec7ea | 61 | |
cf1b7d96 | 62 | #ifndef OPENSSL_NO_DH |
0f113f3e MC |
63 | # include <stdio.h> |
64 | # include <string.h> | |
65 | # include <sys/types.h> | |
66 | # include <sys/stat.h> | |
67 | # include "apps.h" | |
68 | # include <openssl/bio.h> | |
69 | # include <openssl/rand.h> | |
70 | # include <openssl/err.h> | |
71 | # include <openssl/bn.h> | |
72 | # include <openssl/dh.h> | |
73 | # include <openssl/x509.h> | |
74 | # include <openssl/pem.h> | |
75 | ||
76 | # define DEFBITS 2048 | |
77 | # undef PROG | |
78 | # define PROG gendh_main | |
d02b48c6 | 79 | |
6d23cf97 | 80 | static int dh_cb(int p, int n, BN_GENCB *cb); |
667ac4ec RE |
81 | |
82 | int MAIN(int, char **); | |
83 | ||
6b691a5c | 84 | int MAIN(int argc, char **argv) |
0f113f3e MC |
85 | { |
86 | BN_GENCB *cb = NULL; | |
87 | DH *dh = NULL; | |
88 | int ret = 1, num = DEFBITS; | |
89 | int g = 2; | |
90 | char *outfile = NULL; | |
91 | char *inrand = NULL; | |
92 | # ifndef OPENSSL_NO_ENGINE | |
93 | char *engine = NULL; | |
94 | # endif | |
95 | BIO *out = NULL; | |
96 | ||
97 | apps_startup(); | |
98 | ||
99 | if (bio_err == NULL) | |
100 | if ((bio_err = BIO_new(BIO_s_file())) != NULL) | |
101 | BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); | |
102 | ||
103 | cb = BN_GENCB_new(); | |
104 | if (!cb) | |
105 | goto end; | |
106 | ||
107 | BN_GENCB_set(cb, dh_cb, bio_err); | |
108 | ||
109 | if (!load_config(bio_err, NULL)) | |
110 | goto end; | |
111 | ||
112 | argv++; | |
113 | argc--; | |
114 | for (;;) { | |
115 | if (argc <= 0) | |
116 | break; | |
117 | if (strcmp(*argv, "-out") == 0) { | |
118 | if (--argc < 1) | |
119 | goto bad; | |
120 | outfile = *(++argv); | |
121 | } else if (strcmp(*argv, "-2") == 0) | |
122 | g = 2; | |
123 | /*- else if (strcmp(*argv,"-3") == 0) | |
124 | g=3; */ | |
125 | else if (strcmp(*argv, "-5") == 0) | |
126 | g = 5; | |
127 | # ifndef OPENSSL_NO_ENGINE | |
128 | else if (strcmp(*argv, "-engine") == 0) { | |
129 | if (--argc < 1) | |
130 | goto bad; | |
131 | engine = *(++argv); | |
132 | } | |
133 | # endif | |
134 | else if (strcmp(*argv, "-rand") == 0) { | |
135 | if (--argc < 1) | |
136 | goto bad; | |
137 | inrand = *(++argv); | |
138 | } else | |
139 | break; | |
140 | argv++; | |
141 | argc--; | |
142 | } | |
143 | if ((argc >= 1) && ((sscanf(*argv, "%d", &num) == 0) || (num < 0))) { | |
144 | bad: | |
145 | BIO_printf(bio_err, "usage: gendh [args] [numbits]\n"); | |
146 | BIO_printf(bio_err, " -out file - output the key to 'file\n"); | |
147 | BIO_printf(bio_err, " -2 - use 2 as the generator value\n"); | |
148 | /* | |
149 | * BIO_printf(bio_err," -3 - use 3 as the generator value\n"); | |
150 | */ | |
151 | BIO_printf(bio_err, " -5 - use 5 as the generator value\n"); | |
152 | # ifndef OPENSSL_NO_ENGINE | |
153 | BIO_printf(bio_err, | |
154 | " -engine e - use engine e, possibly a hardware device.\n"); | |
155 | # endif | |
156 | BIO_printf(bio_err, " -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, | |
157 | LIST_SEPARATOR_CHAR); | |
158 | BIO_printf(bio_err, | |
159 | " - load the file (or the files in the directory) into\n"); | |
160 | BIO_printf(bio_err, " the random number generator\n"); | |
161 | goto end; | |
162 | } | |
163 | # ifndef OPENSSL_NO_ENGINE | |
164 | setup_engine(bio_err, engine, 0); | |
165 | # endif | |
5270e702 | 166 | |
0f113f3e MC |
167 | out = BIO_new(BIO_s_file()); |
168 | if (out == NULL) { | |
169 | ERR_print_errors(bio_err); | |
170 | goto end; | |
171 | } | |
172 | ||
173 | if (outfile == NULL) { | |
174 | BIO_set_fp(out, stdout, BIO_NOCLOSE); | |
175 | # ifdef OPENSSL_SYS_VMS | |
176 | { | |
177 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); | |
178 | out = BIO_push(tmpbio, out); | |
179 | } | |
180 | # endif | |
181 | } else { | |
182 | if (BIO_write_filename(out, outfile) <= 0) { | |
183 | perror(outfile); | |
184 | goto end; | |
185 | } | |
186 | } | |
187 | ||
188 | if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) { | |
189 | BIO_printf(bio_err, | |
190 | "warning, not much extra random data, consider using the -rand option\n"); | |
191 | } | |
192 | if (inrand != NULL) | |
193 | BIO_printf(bio_err, "%ld semi-random bytes loaded\n", | |
194 | app_RAND_load_files(inrand)); | |
195 | ||
196 | BIO_printf(bio_err, | |
197 | "Generating DH parameters, %d bit long safe prime, generator %d\n", | |
198 | num, g); | |
199 | BIO_printf(bio_err, "This is going to take a long time\n"); | |
200 | ||
201 | if (((dh = DH_new()) == NULL) | |
202 | || !DH_generate_parameters_ex(dh, num, g, cb)) | |
203 | goto end; | |
204 | ||
205 | app_RAND_write_file(NULL, bio_err); | |
206 | ||
207 | if (!PEM_write_bio_DHparams(out, dh)) | |
208 | goto end; | |
209 | ret = 0; | |
210 | end: | |
211 | if (ret != 0) | |
212 | ERR_print_errors(bio_err); | |
213 | if (out != NULL) | |
214 | BIO_free_all(out); | |
215 | if (dh != NULL) | |
216 | DH_free(dh); | |
217 | if (cb != NULL) | |
218 | BN_GENCB_free(cb); | |
219 | apps_shutdown(); | |
220 | OPENSSL_EXIT(ret); | |
221 | } | |
d02b48c6 | 222 | |
6d23cf97 | 223 | static int dh_cb(int p, int n, BN_GENCB *cb) |
0f113f3e MC |
224 | { |
225 | char c = '*'; | |
226 | ||
227 | if (p == 0) | |
228 | c = '.'; | |
229 | if (p == 1) | |
230 | c = '+'; | |
231 | if (p == 2) | |
232 | c = '*'; | |
233 | if (p == 3) | |
234 | c = '\n'; | |
235 | BIO_write(BN_GENCB_get_arg(cb), &c, 1); | |
236 | (void)BIO_flush(BN_GENCB_get_arg(cb)); | |
237 | return 1; | |
238 | } | |
239 | #else /* !OPENSSL_NO_DH */ | |
d4f0339c DSH |
240 | |
241 | # if PEDANTIC | |
0f113f3e | 242 | static void *dummy = &dummy; |
d4f0339c DSH |
243 | # endif |
244 | ||
f5d7a031 | 245 | #endif |