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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/dh.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/dh.c')
-rw-r--r--src/usr.bin/openssl/dh.c248
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diff --git a/src/usr.bin/openssl/dh.c b/src/usr.bin/openssl/dh.c
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1/* $OpenBSD: dh.c,v 1.16 2025/01/19 10:24:17 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_DH */
60
61#ifndef OPENSSL_NO_DH
62
63#include <stdio.h>
64#include <stdlib.h>
65#include <string.h>
66#include <time.h>
67
68#include "apps.h"
69
70#include <openssl/bio.h>
71#include <openssl/bn.h>
72#include <openssl/err.h>
73#include <openssl/dh.h>
74#include <openssl/pem.h>
75#include <openssl/x509.h>
76
77static struct {
78 int check;
79 char *infile;
80 int informat;
81 int noout;
82 char *outfile;
83 int outformat;
84 int text;
85} cfg;
86
87static const struct option dh_options[] = {
88 {
89 .name = "check",
90 .desc = "Check the DH parameters",
91 .type = OPTION_FLAG,
92 .opt.flag = &cfg.check,
93 },
94 {
95 .name = "in",
96 .argname = "file",
97 .desc = "Input file (default stdin)",
98 .type = OPTION_ARG,
99 .opt.arg = &cfg.infile,
100 },
101 {
102 .name = "inform",
103 .argname = "format",
104 .desc = "Input format (DER or PEM (default))",
105 .type = OPTION_ARG_FORMAT,
106 .opt.value = &cfg.informat,
107 },
108 {
109 .name = "noout",
110 .desc = "No output",
111 .type = OPTION_FLAG,
112 .opt.flag = &cfg.noout,
113 },
114 {
115 .name = "out",
116 .argname = "file",
117 .desc = "Output file (default stdout)",
118 .type = OPTION_ARG,
119 .opt.arg = &cfg.outfile,
120 },
121 {
122 .name = "outform",
123 .argname = "format",
124 .desc = "Output format (DER or PEM (default))",
125 .type = OPTION_ARG_FORMAT,
126 .opt.value = &cfg.outformat,
127 },
128 {
129 .name = "text",
130 .desc = "Print a text form of the DH parameters",
131 .type = OPTION_FLAG,
132 .opt.flag = &cfg.text,
133 },
134 { NULL },
135};
136
137static void
138dh_usage(void)
139{
140 fprintf(stderr,
141 "usage: dh [-check] [-in file] [-inform format]\n"
142 " [-noout] [-out file] [-outform format] [-text]\n\n");
143 options_usage(dh_options);
144}
145
146int
147dh_main(int argc, char **argv)
148{
149 DH *dh = NULL;
150 int i;
151 BIO *in = NULL, *out = NULL;
152 int ret = 1;
153
154 if (pledge("stdio cpath wpath rpath", NULL) == -1) {
155 perror("pledge");
156 exit(1);
157 }
158
159 memset(&cfg, 0, sizeof(cfg));
160
161 cfg.informat = FORMAT_PEM;
162 cfg.outformat = FORMAT_PEM;
163
164 if (options_parse(argc, argv, dh_options, NULL, NULL) != 0) {
165 dh_usage();
166 goto end;
167 }
168
169 in = BIO_new(BIO_s_file());
170 out = BIO_new(BIO_s_file());
171 if (in == NULL || out == NULL) {
172 ERR_print_errors(bio_err);
173 goto end;
174 }
175 if (cfg.infile == NULL)
176 BIO_set_fp(in, stdin, BIO_NOCLOSE);
177 else {
178 if (BIO_read_filename(in, cfg.infile) <= 0) {
179 perror(cfg.infile);
180 goto end;
181 }
182 }
183 if (cfg.outfile == NULL) {
184 BIO_set_fp(out, stdout, BIO_NOCLOSE);
185 } else {
186 if (BIO_write_filename(out, cfg.outfile) <= 0) {
187 perror(cfg.outfile);
188 goto end;
189 }
190 }
191
192 if (cfg.informat == FORMAT_ASN1)
193 dh = d2i_DHparams_bio(in, NULL);
194 else if (cfg.informat == FORMAT_PEM)
195 dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
196 else {
197 BIO_printf(bio_err, "bad input format specified\n");
198 goto end;
199 }
200 if (dh == NULL) {
201 BIO_printf(bio_err, "unable to load DH parameters\n");
202 ERR_print_errors(bio_err);
203 goto end;
204 }
205 if (cfg.text) {
206 DHparams_print(out, dh);
207 }
208 if (cfg.check) {
209 if (!DH_check(dh, &i)) {
210 ERR_print_errors(bio_err);
211 goto end;
212 }
213 if (i & DH_CHECK_P_NOT_PRIME)
214 printf("p value is not prime\n");
215 if (i & DH_CHECK_P_NOT_SAFE_PRIME)
216 printf("p value is not a safe prime\n");
217 if (i & DH_UNABLE_TO_CHECK_GENERATOR)
218 printf("unable to check the generator value\n");
219 if (i & DH_NOT_SUITABLE_GENERATOR)
220 printf("the g value is not a generator\n");
221 if (i == 0)
222 printf("DH parameters appear to be ok.\n");
223 }
224 if (!cfg.noout) {
225 if (cfg.outformat == FORMAT_ASN1)
226 i = i2d_DHparams_bio(out, dh);
227 else if (cfg.outformat == FORMAT_PEM)
228 i = PEM_write_bio_DHparams(out, dh);
229 else {
230 BIO_printf(bio_err, "bad output format specified for outfile\n");
231 goto end;
232 }
233 if (!i) {
234 BIO_printf(bio_err, "unable to write DH parameters\n");
235 ERR_print_errors(bio_err);
236 goto end;
237 }
238 }
239 ret = 0;
240
241 end:
242 BIO_free(in);
243 BIO_free_all(out);
244 DH_free(dh);
245
246 return (ret);
247}
248#endif
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