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
77int MAIN(int, char **);
78
79int MAIN(int argc, char **argv)
80	{
81	DSA *dsa=NULL;
82	int ret=1;
83	char *outfile=NULL;
84	char *inrand=NULL,*dsaparams=NULL;
85	char *passargout = NULL, *passout = NULL;
86	BIO *out=NULL,*in=NULL;
87	const EVP_CIPHER *enc=NULL;
88#ifndef OPENSSL_NO_ENGINE
89	char *engine=NULL;
90#endif
91
92	apps_startup();
93
94	if (bio_err == NULL)
95		if ((bio_err=BIO_new(BIO_s_file())) != NULL)
96			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
97
98	if (!load_config(bio_err, NULL))
99		goto end;
100
101	argv++;
102	argc--;
103	for (;;)
104		{
105		if (argc <= 0) break;
106		if (strcmp(*argv,"-out") == 0)
107			{
108			if (--argc < 1) goto bad;
109			outfile= *(++argv);
110			}
111		else if (strcmp(*argv,"-passout") == 0)
112			{
113			if (--argc < 1) goto bad;
114			passargout= *(++argv);
115			}
116#ifndef OPENSSL_NO_ENGINE
117		else if (strcmp(*argv,"-engine") == 0)
118			{
119			if (--argc < 1) goto bad;
120			engine= *(++argv);
121			}
122#endif
123		else if (strcmp(*argv,"-rand") == 0)
124			{
125			if (--argc < 1) goto bad;
126			inrand= *(++argv);
127			}
128		else if (strcmp(*argv,"-") == 0)
129			goto bad;
130#ifndef OPENSSL_NO_DES
131		else if (strcmp(*argv,"-des") == 0)
132			enc=EVP_des_cbc();
133		else if (strcmp(*argv,"-des3") == 0)
134			enc=EVP_des_ede3_cbc();
135#endif
136#ifndef OPENSSL_NO_IDEA
137		else if (strcmp(*argv,"-idea") == 0)
138			enc=EVP_idea_cbc();
139#endif
140#ifndef OPENSSL_NO_SEED
141		else if (strcmp(*argv,"-seed") == 0)
142			enc=EVP_seed_cbc();
143#endif
144#ifndef OPENSSL_NO_AES
145		else if (strcmp(*argv,"-aes128") == 0)
146			enc=EVP_aes_128_cbc();
147		else if (strcmp(*argv,"-aes192") == 0)
148			enc=EVP_aes_192_cbc();
149		else if (strcmp(*argv,"-aes256") == 0)
150			enc=EVP_aes_256_cbc();
151#endif
152#ifndef OPENSSL_NO_CAMELLIA
153		else if (strcmp(*argv,"-camellia128") == 0)
154			enc=EVP_camellia_128_cbc();
155		else if (strcmp(*argv,"-camellia192") == 0)
156			enc=EVP_camellia_192_cbc();
157		else if (strcmp(*argv,"-camellia256") == 0)
158			enc=EVP_camellia_256_cbc();
159#endif
160		else if (**argv != '-' && dsaparams == NULL)
161			{
162			dsaparams = *argv;
163			}
164		else
165			goto bad;
166		argv++;
167		argc--;
168		}
169
170	if (dsaparams == NULL)
171		{
172bad:
173		BIO_printf(bio_err,"usage: gendsa [args] dsaparam-file\n");
174		BIO_printf(bio_err," -out file - output the key to 'file'\n");
175#ifndef OPENSSL_NO_DES
176		BIO_printf(bio_err," -des      - encrypt the generated key with DES in cbc mode\n");
177		BIO_printf(bio_err," -des3     - encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
178#endif
179#ifndef OPENSSL_NO_IDEA
180		BIO_printf(bio_err," -idea     - encrypt the generated key with IDEA in cbc mode\n");
181#endif
182#ifndef OPENSSL_NO_SEED
183		BIO_printf(bio_err," -seed\n");
184		BIO_printf(bio_err,"                 encrypt PEM output with cbc seed\n");
185#endif
186#ifndef OPENSSL_NO_AES
187		BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
188		BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
189#endif
190#ifndef OPENSSL_NO_CAMELLIA
191		BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
192		BIO_printf(bio_err,"                 encrypt PEM output with cbc camellia\n");
193#endif
194#ifndef OPENSSL_NO_ENGINE
195		BIO_printf(bio_err," -engine e - use engine e, possibly a hardware device.\n");
196#endif
197		BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
198		BIO_printf(bio_err,"           - load the file (or the files in the directory) into\n");
199		BIO_printf(bio_err,"             the random number generator\n");
200		BIO_printf(bio_err," dsaparam-file\n");
201		BIO_printf(bio_err,"           - a DSA parameter file as generated by the dsaparam command\n");
202		goto end;
203		}
204
205#ifndef OPENSSL_NO_ENGINE
206        setup_engine(bio_err, engine, 0);
207#endif
208
209	if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
210		BIO_printf(bio_err, "Error getting password\n");
211		goto end;
212	}
213
214
215	in=BIO_new(BIO_s_file());
216	if (!(BIO_read_filename(in,dsaparams)))
217		{
218		perror(dsaparams);
219		goto end;
220		}
221
222	if ((dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL)) == NULL)
223		{
224		BIO_printf(bio_err,"unable to load DSA parameter file\n");
225		goto end;
226		}
227	BIO_free(in);
228	in = NULL;
229
230	out=BIO_new(BIO_s_file());
231	if (out == NULL) goto end;
232
233	if (outfile == NULL)
234		{
235		BIO_set_fp(out,stdout,BIO_NOCLOSE);
236#ifdef OPENSSL_SYS_VMS
237		{
238		BIO *tmpbio = BIO_new(BIO_f_linebuffer());
239		out = BIO_push(tmpbio, out);
240		}
241#endif
242		}
243	else
244		{
245		if (BIO_write_filename(out,outfile) <= 0)
246			{
247			perror(outfile);
248			goto end;
249			}
250		}
251
252	if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL)
253		{
254		BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
255		}
256	if (inrand != NULL)
257		BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
258			app_RAND_load_files(inrand));
259
260	BIO_printf(bio_err,"Generating DSA key, %d bits\n",
261							BN_num_bits(dsa->p));
262	if (!DSA_generate_key(dsa)) goto end;
263
264	app_RAND_write_file(NULL, bio_err);
265
266	if (!PEM_write_bio_DSAPrivateKey(out,dsa,enc,NULL,0,NULL, passout))
267		goto end;
268	ret=0;
269end:
270	if (ret != 0)
271		ERR_print_errors(bio_err);
272	if (in != NULL) BIO_free(in);
273	if (out != NULL) BIO_free_all(out);
274	if (dsa != NULL) DSA_free(dsa);
275	if(passout) OPENSSL_free(passout);
276	apps_shutdown();
277	OPENSSL_EXIT(ret);
278	}
279#else /* !OPENSSL_NO_DSA */
280
281# if PEDANTIC
282static void *dummy=&dummy;
283# endif
284
285#endif
286