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authorcvs2svn <admin@example.com>2025-04-14 17:32:06 +0000
committercvs2svn <admin@example.com>2025-04-14 17:32:06 +0000
commiteb8dd9dca1228af0cd132f515509051ecfabf6f6 (patch)
treeedb6da6af7e865d488dc1a29309f1e1ec226e603 /src/usr.bin/openssl/dsa.c
parent247f0352e0ed72a4f476db9dc91f4d982bc83eb2 (diff)
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This commit was manufactured by cvs2git to create tag 'tb_20250414'.tb_20250414
Diffstat (limited to 'src/usr.bin/openssl/dsa.c')
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diff --git a/src/usr.bin/openssl/dsa.c b/src/usr.bin/openssl/dsa.c
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1/* $OpenBSD: dsa.c,v 1.18 2023/03/06 14:32:06 tb 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#include <stdio.h>
62#include <stdlib.h>
63#include <time.h>
64#include <string.h>
65
66#include "apps.h"
67
68#include <openssl/bio.h>
69#include <openssl/bn.h>
70#include <openssl/dsa.h>
71#include <openssl/err.h>
72#include <openssl/evp.h>
73#include <openssl/pem.h>
74#include <openssl/x509.h>
75
76static struct {
77 const EVP_CIPHER *enc;
78 char *infile;
79 int informat;
80 int modulus;
81 int noout;
82 char *outfile;
83 int outformat;
84 char *passargin;
85 char *passargout;
86 int pubin;
87 int pubout;
88 int pvk_encr;
89 int text;
90} cfg;
91
92static int
93dsa_opt_enc(int argc, char **argv, int *argsused)
94{
95 char *name = argv[0];
96
97 if (*name++ != '-')
98 return (1);
99
100 if ((cfg.enc = EVP_get_cipherbyname(name)) != NULL) {
101 *argsused = 1;
102 return (0);
103 }
104
105 return (1);
106}
107
108static const struct option dsa_options[] = {
109 {
110 .name = "in",
111 .argname = "file",
112 .desc = "Input file (default stdin)",
113 .type = OPTION_ARG,
114 .opt.arg = &cfg.infile,
115 },
116 {
117 .name = "inform",
118 .argname = "format",
119 .desc = "Input format (PEM (default) or any other supported"
120 " format)",
121 .type = OPTION_ARG_FORMAT,
122 .opt.value = &cfg.informat,
123 },
124 {
125 .name = "modulus",
126 .desc = "Print the DSA public value",
127 .type = OPTION_FLAG,
128 .opt.flag = &cfg.modulus,
129 },
130 {
131 .name = "noout",
132 .desc = "No output",
133 .type = OPTION_FLAG,
134 .opt.flag = &cfg.noout,
135 },
136 {
137 .name = "out",
138 .argname = "file",
139 .desc = "Output file (default stdout)",
140 .type = OPTION_ARG,
141 .opt.arg = &cfg.outfile,
142 },
143 {
144 .name = "outform",
145 .argname = "format",
146 .desc = "Output format (DER, MSBLOB, PEM (default) or PVK)",
147 .type = OPTION_ARG_FORMAT,
148 .opt.value = &cfg.outformat,
149 },
150 {
151 .name = "passin",
152 .argname = "source",
153 .desc = "Input file passphrase source",
154 .type = OPTION_ARG,
155 .opt.arg = &cfg.passargin,
156 },
157 {
158 .name = "passout",
159 .argname = "source",
160 .desc = "Output file passphrase source",
161 .type = OPTION_ARG,
162 .opt.arg = &cfg.passargout,
163 },
164 {
165 .name = "pubin",
166 .desc = "Read a public key from the input file instead of"
167 " private key",
168 .type = OPTION_FLAG,
169 .opt.flag = &cfg.pubin,
170 },
171 {
172 .name = "pubout",
173 .desc = "Output a public key instead of private key",
174 .type = OPTION_FLAG,
175 .opt.flag = &cfg.pubout,
176 },
177 {
178 .name = "pvk-none",
179 .desc = "PVK encryption level",
180 .type = OPTION_VALUE,
181 .value = 0,
182 .opt.value = &cfg.pvk_encr,
183 },
184 {
185 .name = "pvk-strong",
186 .desc = "PVK encryption level (default)",
187 .type = OPTION_VALUE,
188 .value = 2,
189 .opt.value = &cfg.pvk_encr,
190 },
191 {
192 .name = "pvk-weak",
193 .desc = "PVK encryption level",
194 .type = OPTION_VALUE,
195 .value = 1,
196 .opt.value = &cfg.pvk_encr,
197 },
198 {
199 .name = "text",
200 .desc = "Print the key in text form",
201 .type = OPTION_FLAG,
202 .opt.flag = &cfg.text,
203 },
204 {
205 .name = NULL,
206 .type = OPTION_ARGV_FUNC,
207 .opt.argvfunc = dsa_opt_enc,
208 },
209 { NULL },
210};
211
212static void
213dsa_usage(void)
214{
215 int n = 0;
216
217 fprintf(stderr,
218 "usage: dsa [-in file] [-inform format] [-modulus] [-noout]\n"
219 " [-out file] [-outform format] [-passin src] [-passout src]\n"
220 " [-pubin] [-pubout] [-pvk-none | -pvk-strong | -pvk-weak]\n"
221 " [-text] [-ciphername]\n\n");
222 options_usage(dsa_options);
223 fprintf(stderr, "\n");
224
225 fprintf(stderr, "Valid ciphername values:\n\n");
226 OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, show_cipher, &n);
227 fprintf(stderr, "\n");
228}
229
230int
231dsa_main(int argc, char **argv)
232{
233 int ret = 1;
234 DSA *dsa = NULL;
235 int i;
236 BIO *in = NULL, *out = NULL;
237 char *passin = NULL, *passout = NULL;
238
239 if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
240 perror("pledge");
241 exit(1);
242 }
243
244 memset(&cfg, 0, sizeof(cfg));
245
246 cfg.pvk_encr = 2;
247 cfg.informat = FORMAT_PEM;
248 cfg.outformat = FORMAT_PEM;
249
250 if (options_parse(argc, argv, dsa_options, NULL, NULL) != 0) {
251 dsa_usage();
252 goto end;
253 }
254
255 if (!app_passwd(bio_err, cfg.passargin, cfg.passargout,
256 &passin, &passout)) {
257 BIO_printf(bio_err, "Error getting passwords\n");
258 goto end;
259 }
260
261 in = BIO_new(BIO_s_file());
262 out = BIO_new(BIO_s_file());
263 if (in == NULL || out == NULL) {
264 ERR_print_errors(bio_err);
265 goto end;
266 }
267 if (cfg.infile == NULL)
268 BIO_set_fp(in, stdin, BIO_NOCLOSE);
269 else {
270 if (BIO_read_filename(in, cfg.infile) <= 0) {
271 perror(cfg.infile);
272 goto end;
273 }
274 }
275
276 BIO_printf(bio_err, "read DSA key\n");
277
278 {
279 EVP_PKEY *pkey;
280
281 if (cfg.pubin)
282 pkey = load_pubkey(bio_err, cfg.infile,
283 cfg.informat, 1, passin, "Public Key");
284 else
285 pkey = load_key(bio_err, cfg.infile,
286 cfg.informat, 1, passin, "Private Key");
287
288 if (pkey) {
289 dsa = EVP_PKEY_get1_DSA(pkey);
290 EVP_PKEY_free(pkey);
291 }
292 }
293 if (dsa == NULL) {
294 BIO_printf(bio_err, "unable to load Key\n");
295 ERR_print_errors(bio_err);
296 goto end;
297 }
298 if (cfg.outfile == NULL) {
299 BIO_set_fp(out, stdout, BIO_NOCLOSE);
300 } else {
301 if (BIO_write_filename(out, cfg.outfile) <= 0) {
302 perror(cfg.outfile);
303 goto end;
304 }
305 }
306
307 if (cfg.text) {
308 if (!DSA_print(out, dsa, 0)) {
309 perror(cfg.outfile);
310 ERR_print_errors(bio_err);
311 goto end;
312 }
313 }
314 if (cfg.modulus) {
315 fprintf(stdout, "Public Key=");
316 BN_print(out, DSA_get0_pub_key(dsa));
317 fprintf(stdout, "\n");
318 }
319 if (cfg.noout)
320 goto end;
321 BIO_printf(bio_err, "writing DSA key\n");
322 if (cfg.outformat == FORMAT_ASN1) {
323 if (cfg.pubin || cfg.pubout)
324 i = i2d_DSA_PUBKEY_bio(out, dsa);
325 else
326 i = i2d_DSAPrivateKey_bio(out, dsa);
327 } else if (cfg.outformat == FORMAT_PEM) {
328 if (cfg.pubin || cfg.pubout)
329 i = PEM_write_bio_DSA_PUBKEY(out, dsa);
330 else
331 i = PEM_write_bio_DSAPrivateKey(out, dsa, cfg.enc,
332 NULL, 0, NULL, passout);
333#if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_RC4)
334 } else if (cfg.outformat == FORMAT_MSBLOB ||
335 cfg.outformat == FORMAT_PVK) {
336 EVP_PKEY *pk;
337 pk = EVP_PKEY_new();
338 EVP_PKEY_set1_DSA(pk, dsa);
339 if (cfg.outformat == FORMAT_PVK)
340 i = i2b_PVK_bio(out, pk, cfg.pvk_encr, 0,
341 passout);
342 else if (cfg.pubin || cfg.pubout)
343 i = i2b_PublicKey_bio(out, pk);
344 else
345 i = i2b_PrivateKey_bio(out, pk);
346 EVP_PKEY_free(pk);
347#endif
348 } else {
349 BIO_printf(bio_err, "bad output format specified for outfile\n");
350 goto end;
351 }
352 if (i <= 0) {
353 BIO_printf(bio_err, "unable to write private key\n");
354 ERR_print_errors(bio_err);
355 } else
356 ret = 0;
357 end:
358 BIO_free(in);
359 BIO_free_all(out);
360 DSA_free(dsa);
361 free(passin);
362 free(passout);
363
364 return (ret);
365}
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