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1/* $OpenBSD: gendsa.c,v 1.1 2014/08/26 17:47:24 jsing Exp $ */
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
61
62#include <sys/types.h>
63#include <sys/stat.h>
64
65#include <stdio.h>
66#include <string.h>
67
68#include "apps.h"
69
70#include <openssl/bio.h>
71#include <openssl/bn.h>
72#include <openssl/dsa.h>
73#include <openssl/err.h>
74#include <openssl/pem.h>
75#include <openssl/x509.h>
76
77#define DEFBITS 512
78
79int gendsa_main(int, char **);
80
81int
82gendsa_main(int argc, char **argv)
83{
84 DSA *dsa = NULL;
85 int ret = 1;
86 char *outfile = NULL;
87 char *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 argv++;
96 argc--;
97 for (;;) {
98 if (argc <= 0)
99 break;
100 if (strcmp(*argv, "-out") == 0) {
101 if (--argc < 1)
102 goto bad;
103 outfile = *(++argv);
104 } else if (strcmp(*argv, "-passout") == 0) {
105 if (--argc < 1)
106 goto bad;
107 passargout = *(++argv);
108 }
109#ifndef OPENSSL_NO_ENGINE
110 else if (strcmp(*argv, "-engine") == 0) {
111 if (--argc < 1)
112 goto bad;
113 engine = *(++argv);
114 }
115#endif
116 else if (strcmp(*argv, "-") == 0)
117 goto bad;
118#ifndef OPENSSL_NO_DES
119 else if (strcmp(*argv, "-des") == 0)
120 enc = EVP_des_cbc();
121 else if (strcmp(*argv, "-des3") == 0)
122 enc = EVP_des_ede3_cbc();
123#endif
124#ifndef OPENSSL_NO_IDEA
125 else if (strcmp(*argv, "-idea") == 0)
126 enc = EVP_idea_cbc();
127#endif
128#ifndef OPENSSL_NO_AES
129 else if (strcmp(*argv, "-aes128") == 0)
130 enc = EVP_aes_128_cbc();
131 else if (strcmp(*argv, "-aes192") == 0)
132 enc = EVP_aes_192_cbc();
133 else if (strcmp(*argv, "-aes256") == 0)
134 enc = EVP_aes_256_cbc();
135#endif
136#ifndef OPENSSL_NO_CAMELLIA
137 else if (strcmp(*argv, "-camellia128") == 0)
138 enc = EVP_camellia_128_cbc();
139 else if (strcmp(*argv, "-camellia192") == 0)
140 enc = EVP_camellia_192_cbc();
141 else if (strcmp(*argv, "-camellia256") == 0)
142 enc = EVP_camellia_256_cbc();
143#endif
144 else if (**argv != '-' && dsaparams == NULL) {
145 dsaparams = *argv;
146 } else
147 goto bad;
148 argv++;
149 argc--;
150 }
151
152 if (dsaparams == NULL) {
153bad:
154 BIO_printf(bio_err, "usage: gendsa [args] dsaparam-file\n");
155 BIO_printf(bio_err, " -out file - output the key to 'file'\n");
156#ifndef OPENSSL_NO_DES
157 BIO_printf(bio_err, " -des - encrypt the generated key with DES in cbc mode\n");
158 BIO_printf(bio_err, " -des3 - encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
159#endif
160#ifndef OPENSSL_NO_IDEA
161 BIO_printf(bio_err, " -idea - encrypt the generated key with IDEA in cbc mode\n");
162#endif
163#ifndef OPENSSL_NO_AES
164 BIO_printf(bio_err, " -aes128, -aes192, -aes256\n");
165 BIO_printf(bio_err, " encrypt PEM output with cbc aes\n");
166#endif
167#ifndef OPENSSL_NO_CAMELLIA
168 BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n");
169 BIO_printf(bio_err, " encrypt PEM output with cbc camellia\n");
170#endif
171#ifndef OPENSSL_NO_ENGINE
172 BIO_printf(bio_err, " -engine e - use engine e, possibly a hardware device.\n");
173#endif
174 BIO_printf(bio_err, " dsaparam-file\n");
175 BIO_printf(bio_err, " - a DSA parameter file as generated by the dsaparam command\n");
176 goto end;
177 }
178#ifndef OPENSSL_NO_ENGINE
179 setup_engine(bio_err, engine, 0);
180#endif
181
182 if (!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
183 BIO_printf(bio_err, "Error getting password\n");
184 goto end;
185 }
186 in = BIO_new(BIO_s_file());
187 if (!(BIO_read_filename(in, dsaparams))) {
188 perror(dsaparams);
189 goto end;
190 }
191 if ((dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL)) == NULL) {
192 BIO_printf(bio_err, "unable to load DSA parameter file\n");
193 goto end;
194 }
195 BIO_free(in);
196 in = NULL;
197
198 out = BIO_new(BIO_s_file());
199 if (out == NULL)
200 goto end;
201
202 if (outfile == NULL) {
203 BIO_set_fp(out, stdout, BIO_NOCLOSE);
204 } else {
205 if (BIO_write_filename(out, outfile) <= 0) {
206 perror(outfile);
207 goto end;
208 }
209 }
210
211 BIO_printf(bio_err, "Generating DSA key, %d bits\n",
212 BN_num_bits(dsa->p));
213 if (!DSA_generate_key(dsa))
214 goto end;
215
216 if (!PEM_write_bio_DSAPrivateKey(out, dsa, enc, NULL, 0, NULL, passout))
217 goto end;
218 ret = 0;
219end:
220 if (ret != 0)
221 ERR_print_errors(bio_err);
222 BIO_free(in);
223 if (out != NULL)
224 BIO_free_all(out);
225 if (dsa != NULL)
226 DSA_free(dsa);
227 free(passout);
228
229 return (ret);
230}