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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. | |
9 | * | |
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). | |
16 | * | |
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. | |
23 | * | |
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 :-). | |
38 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
39 | * the apps directory (application code) you must include an acknowledgement: | |
40 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
41 | * | |
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. | |
53 | * | |
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 | ||
cf1b7d96 | 60 | #ifndef OPENSSL_NO_DH |
d02b48c6 RE |
61 | #include <stdio.h> |
62 | #include <string.h> | |
63 | #include <sys/types.h> | |
64 | #include <sys/stat.h> | |
65 | #include "apps.h" | |
ec577822 BM |
66 | #include <openssl/bio.h> |
67 | #include <openssl/rand.h> | |
68 | #include <openssl/err.h> | |
69 | #include <openssl/bn.h> | |
70 | #include <openssl/dh.h> | |
71 | #include <openssl/x509.h> | |
72 | #include <openssl/pem.h> | |
5270e702 | 73 | #include <openssl/engine.h> |
d02b48c6 RE |
74 | |
75 | #define DEFBITS 512 | |
76 | #undef PROG | |
77 | #define PROG gendh_main | |
78 | ||
b4f76582 | 79 | static void MS_CALLBACK dh_cb(int p, int n, void *arg); |
667ac4ec RE |
80 | |
81 | int MAIN(int, char **); | |
82 | ||
6b691a5c | 83 | int MAIN(int argc, char **argv) |
d02b48c6 | 84 | { |
5270e702 | 85 | ENGINE *e = NULL; |
d02b48c6 RE |
86 | DH *dh=NULL; |
87 | int ret=1,num=DEFBITS; | |
88 | int g=2; | |
89 | char *outfile=NULL; | |
f365611c | 90 | char *inrand=NULL; |
5270e702 | 91 | char *engine=NULL; |
d02b48c6 RE |
92 | BIO *out=NULL; |
93 | ||
94 | apps_startup(); | |
95 | ||
96 | if (bio_err == NULL) | |
97 | if ((bio_err=BIO_new(BIO_s_file())) != NULL) | |
58964a49 | 98 | BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); |
d02b48c6 RE |
99 | |
100 | argv++; | |
101 | argc--; | |
102 | for (;;) | |
103 | { | |
104 | if (argc <= 0) break; | |
105 | if (strcmp(*argv,"-out") == 0) | |
106 | { | |
107 | if (--argc < 1) goto bad; | |
108 | outfile= *(++argv); | |
109 | } | |
110 | else if (strcmp(*argv,"-2") == 0) | |
111 | g=2; | |
112 | /* else if (strcmp(*argv,"-3") == 0) | |
113 | g=3; */ | |
114 | else if (strcmp(*argv,"-5") == 0) | |
115 | g=5; | |
5270e702 RL |
116 | else if (strcmp(*argv,"-engine") == 0) |
117 | { | |
118 | if (--argc < 1) goto bad; | |
119 | engine= *(++argv); | |
120 | } | |
d02b48c6 RE |
121 | else if (strcmp(*argv,"-rand") == 0) |
122 | { | |
123 | if (--argc < 1) goto bad; | |
124 | inrand= *(++argv); | |
125 | } | |
126 | else | |
127 | break; | |
128 | argv++; | |
129 | argc--; | |
130 | } | |
131 | if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0))) | |
132 | { | |
133 | bad: | |
134 | BIO_printf(bio_err,"usage: gendh [args] [numbits]\n"); | |
135 | BIO_printf(bio_err," -out file - output the key to 'file\n"); | |
5270e702 RL |
136 | BIO_printf(bio_err," -2 - use 2 as the generator value\n"); |
137 | /* BIO_printf(bio_err," -3 - use 3 as the generator value\n"); */ | |
138 | BIO_printf(bio_err," -5 - use 5 as the generator value\n"); | |
139 | BIO_printf(bio_err," -engine e - use engine e, possibly a hardware device.\n"); | |
afbd0746 | 140 | BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); |
d02b48c6 RE |
141 | BIO_printf(bio_err," - load the file (or the files in the directory) into\n"); |
142 | BIO_printf(bio_err," the random number generator\n"); | |
143 | goto end; | |
144 | } | |
145 | ||
5270e702 RL |
146 | if (engine != NULL) |
147 | { | |
148 | if((e = ENGINE_by_id(engine)) == NULL) | |
149 | { | |
150 | BIO_printf(bio_err,"invalid engine \"%s\"\n", | |
151 | engine); | |
152 | goto end; | |
153 | } | |
154 | if(!ENGINE_set_default(e, ENGINE_METHOD_ALL)) | |
155 | { | |
156 | BIO_printf(bio_err,"can't use that engine\n"); | |
157 | goto end; | |
158 | } | |
159 | BIO_printf(bio_err,"engine \"%s\" set.\n", engine); | |
160 | /* Free our "structural" reference. */ | |
161 | ENGINE_free(e); | |
162 | } | |
163 | ||
d02b48c6 RE |
164 | out=BIO_new(BIO_s_file()); |
165 | if (out == NULL) | |
166 | { | |
167 | ERR_print_errors(bio_err); | |
168 | goto end; | |
169 | } | |
170 | ||
171 | if (outfile == NULL) | |
645749ef | 172 | { |
d02b48c6 | 173 | BIO_set_fp(out,stdout,BIO_NOCLOSE); |
645749ef RL |
174 | #ifdef VMS |
175 | { | |
176 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); | |
177 | out = BIO_push(tmpbio, out); | |
178 | } | |
179 | #endif | |
180 | } | |
d02b48c6 RE |
181 | else |
182 | { | |
183 | if (BIO_write_filename(out,outfile) <= 0) | |
184 | { | |
185 | perror(outfile); | |
186 | goto end; | |
187 | } | |
188 | } | |
189 | ||
f365611c | 190 | if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) |
d02b48c6 | 191 | { |
a31011e8 | 192 | BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); |
d02b48c6 | 193 | } |
a31011e8 BM |
194 | if (inrand != NULL) |
195 | BIO_printf(bio_err,"%ld semi-random bytes loaded\n", | |
196 | app_RAND_load_files(inrand)); | |
d02b48c6 | 197 | |
41918458 | 198 | BIO_printf(bio_err,"Generating DH parameters, %d bit long safe prime, generator %d\n",num,g); |
d02b48c6 | 199 | BIO_printf(bio_err,"This is going to take a long time\n"); |
b4f76582 | 200 | dh=DH_generate_parameters(num,g,dh_cb,bio_err); |
d02b48c6 RE |
201 | |
202 | if (dh == NULL) goto end; | |
203 | ||
a31011e8 | 204 | app_RAND_write_file(NULL, bio_err); |
d02b48c6 RE |
205 | |
206 | if (!PEM_write_bio_DHparams(out,dh)) | |
207 | goto end; | |
208 | ret=0; | |
209 | end: | |
210 | if (ret != 0) | |
211 | ERR_print_errors(bio_err); | |
645749ef | 212 | if (out != NULL) BIO_free_all(out); |
d02b48c6 RE |
213 | if (dh != NULL) DH_free(dh); |
214 | EXIT(ret); | |
215 | } | |
216 | ||
b4f76582 | 217 | static void MS_CALLBACK dh_cb(int p, int n, void *arg) |
d02b48c6 RE |
218 | { |
219 | char c='*'; | |
220 | ||
221 | if (p == 0) c='.'; | |
222 | if (p == 1) c='+'; | |
223 | if (p == 2) c='*'; | |
224 | if (p == 3) c='\n'; | |
58964a49 | 225 | BIO_write((BIO *)arg,&c,1); |
d58d092b | 226 | (void)BIO_flush((BIO *)arg); |
d02b48c6 RE |
227 | #ifdef LINT |
228 | p=n; | |
229 | #endif | |
230 | } | |
f5d7a031 | 231 | #endif |