1 /* apps/gendsa.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 #include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */
60 #ifndef OPENSSL_NO_DSA
61 #include <stdio.h>
62 #include <string.h>
63 #include <sys/types.h>
64 #include <sys/stat.h>
65 #include "apps.h"
66 #include <openssl/bio.h>
67 #include <openssl/err.h>
68 #include <openssl/bn.h>
69 #include <openssl/dsa.h>
70 #include <openssl/x509.h>
71 #include <openssl/pem.h>
72
73 #define DEFBITS 512
74 #undef PROG
75 #define PROG gendsa_main
76
77 int MAIN(int, char **);
78
MAIN(int argc,char ** argv)79 int MAIN(int argc, char **argv)
80 {
81 #ifndef OPENSSL_NO_ENGINE
82 ENGINE *e = NULL;
83 #endif
84 DSA *dsa=NULL;
85 int ret=1;
86 char *outfile=NULL;
87 char *inrand=NULL,*dsaparams=NULL;
88 char *passargout = NULL, *passout = NULL;
89 BIO *out=NULL,*in=NULL;
90 const EVP_CIPHER *enc=NULL;
91 #ifndef OPENSSL_NO_ENGINE
92 char *engine=NULL;
93 #endif
94
95 apps_startup();
96
97 if (bio_err == NULL)
98 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
99 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
100
101 if (!load_config(bio_err, NULL))
102 goto end;
103
104 argv++;
105 argc--;
106 for (;;)
107 {
108 if (argc <= 0) break;
109 if (strcmp(*argv,"-out") == 0)
110 {
111 if (--argc < 1) goto bad;
112 outfile= *(++argv);
113 }
114 else if (strcmp(*argv,"-passout") == 0)
115 {
116 if (--argc < 1) goto bad;
117 passargout= *(++argv);
118 }
119 #ifndef OPENSSL_NO_ENGINE
120 else if (strcmp(*argv,"-engine") == 0)
121 {
122 if (--argc < 1) goto bad;
123 engine= *(++argv);
124 }
125 #endif
126 else if (strcmp(*argv,"-rand") == 0)
127 {
128 if (--argc < 1) goto bad;
129 inrand= *(++argv);
130 }
131 else if (strcmp(*argv,"-") == 0)
132 goto bad;
133 #ifndef OPENSSL_NO_DES
134 else if (strcmp(*argv,"-des") == 0)
135 enc=EVP_des_cbc();
136 else if (strcmp(*argv,"-des3") == 0)
137 enc=EVP_des_ede3_cbc();
138 #endif
139 #ifndef OPENSSL_NO_IDEA
140 else if (strcmp(*argv,"-idea") == 0)
141 enc=EVP_idea_cbc();
142 #endif
143 #ifndef OPENSSL_NO_AES
144 else if (strcmp(*argv,"-aes128") == 0)
145 enc=EVP_aes_128_cbc();
146 else if (strcmp(*argv,"-aes192") == 0)
147 enc=EVP_aes_192_cbc();
148 else if (strcmp(*argv,"-aes256") == 0)
149 enc=EVP_aes_256_cbc();
150 #endif
151 else if (**argv != '-' && dsaparams == NULL)
152 {
153 dsaparams = *argv;
154 }
155 else
156 goto bad;
157 argv++;
158 argc--;
159 }
160
161 if (dsaparams == NULL)
162 {
163 bad:
164 BIO_printf(bio_err,"usage: gendsa [args] dsaparam-file\n");
165 BIO_printf(bio_err," -out file - output the key to 'file'\n");
166 #ifndef OPENSSL_NO_DES
167 BIO_printf(bio_err," -des - encrypt the generated key with DES in cbc mode\n");
168 BIO_printf(bio_err," -des3 - encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
169 #endif
170 #ifndef OPENSSL_NO_IDEA
171 BIO_printf(bio_err," -idea - encrypt the generated key with IDEA in cbc mode\n");
172 #endif
173 #ifndef OPENSSL_NO_AES
174 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
175 BIO_printf(bio_err," encrypt PEM output with cbc aes\n");
176 #endif
177 #ifndef OPENSSL_NO_ENGINE
178 BIO_printf(bio_err," -engine e - use engine e, possibly a hardware device.\n");
179 #endif
180 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
181 BIO_printf(bio_err," - load the file (or the files in the directory) into\n");
182 BIO_printf(bio_err," the random number generator\n");
183 BIO_printf(bio_err," dsaparam-file\n");
184 BIO_printf(bio_err," - a DSA parameter file as generated by the dsaparam command\n");
185 goto end;
186 }
187
188 #ifndef OPENSSL_NO_ENGINE
189 e = setup_engine(bio_err, engine, 0);
190 #endif
191
192 if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
193 BIO_printf(bio_err, "Error getting password\n");
194 goto end;
195 }
196
197
198 in=BIO_new(BIO_s_file());
199 if (!(BIO_read_filename(in,dsaparams)))
200 {
201 perror(dsaparams);
202 goto end;
203 }
204
205 if ((dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL)) == NULL)
206 {
207 BIO_printf(bio_err,"unable to load DSA parameter file\n");
208 goto end;
209 }
210 BIO_free(in);
211 in = NULL;
212
213 out=BIO_new(BIO_s_file());
214 if (out == NULL) goto end;
215
216 if (outfile == NULL)
217 {
218 BIO_set_fp(out,stdout,BIO_NOCLOSE);
219 #ifdef OPENSSL_SYS_VMS
220 {
221 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
222 out = BIO_push(tmpbio, out);
223 }
224 #endif
225 }
226 else
227 {
228 if (BIO_write_filename(out,outfile) <= 0)
229 {
230 perror(outfile);
231 goto end;
232 }
233 }
234
235 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL)
236 {
237 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
238 }
239 if (inrand != NULL)
240 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
241 app_RAND_load_files(inrand));
242
243 BIO_printf(bio_err,"Generating DSA key, %d bits\n",
244 BN_num_bits(dsa->p));
245 if (!DSA_generate_key(dsa)) goto end;
246
247 app_RAND_write_file(NULL, bio_err);
248
249 if (!PEM_write_bio_DSAPrivateKey(out,dsa,enc,NULL,0,NULL, passout))
250 goto end;
251 ret=0;
252 end:
253 if (ret != 0)
254 ERR_print_errors(bio_err);
255 if (in != NULL) BIO_free(in);
256 if (out != NULL) BIO_free_all(out);
257 if (dsa != NULL) DSA_free(dsa);
258 if(passout) OPENSSL_free(passout);
259 apps_shutdown();
260 OPENSSL_EXIT(ret);
261 }
262 #endif
263