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1/* apps/dsa.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 <stdio.h>
60#include <stdlib.h>
61#include <string.h>
62#include <time.h>
63#include "apps.h"
64#include "bio.h"
65#include "err.h"
66#include "dsa.h"
67#include "evp.h"
68#include "x509.h"
69#include "pem.h"
70
71#undef PROG
72#define PROG dsa_main
73
74/* -inform arg - input format - default PEM (one of DER, NET or PEM)
75 * -outform arg - output format - default PEM
76 * -in arg - input file - default stdin
77 * -out arg - output file - default stdout
78 * -des - encrypt output if PEM format with DES in cbc mode
79 * -des3 - encrypt output if PEM format
80 * -idea - encrypt output if PEM format
81 * -text - print a text version
82 * -modulus - print the DSA public key
83 */
84
85int MAIN(argc, argv)
86int argc;
87char **argv;
88 {
89 int ret=1;
90 DSA *dsa=NULL;
91 int i,badops=0;
92 EVP_CIPHER *enc=NULL;
93 BIO *in=NULL,*out=NULL;
94 int informat,outformat,text=0,noout=0;
95 char *infile,*outfile,*prog;
96 int modulus=0;
97
98 apps_startup();
99
100 if (bio_err == NULL)
101 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
102 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
103
104 infile=NULL;
105 outfile=NULL;
106 informat=FORMAT_PEM;
107 outformat=FORMAT_PEM;
108
109 prog=argv[0];
110 argc--;
111 argv++;
112 while (argc >= 1)
113 {
114 if (strcmp(*argv,"-inform") == 0)
115 {
116 if (--argc < 1) goto bad;
117 informat=str2fmt(*(++argv));
118 }
119 else if (strcmp(*argv,"-outform") == 0)
120 {
121 if (--argc < 1) goto bad;
122 outformat=str2fmt(*(++argv));
123 }
124 else if (strcmp(*argv,"-in") == 0)
125 {
126 if (--argc < 1) goto bad;
127 infile= *(++argv);
128 }
129 else if (strcmp(*argv,"-out") == 0)
130 {
131 if (--argc < 1) goto bad;
132 outfile= *(++argv);
133 }
134 else if (strcmp(*argv,"-noout") == 0)
135 noout=1;
136 else if (strcmp(*argv,"-text") == 0)
137 text=1;
138 else if (strcmp(*argv,"-modulus") == 0)
139 modulus=1;
140 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
141 {
142 BIO_printf(bio_err,"unknown option %s\n",*argv);
143 badops=1;
144 break;
145 }
146 argc--;
147 argv++;
148 }
149
150 if (badops)
151 {
152bad:
153 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
154 BIO_printf(bio_err,"where options are\n");
155 BIO_printf(bio_err," -inform arg input format - one of DER NET PEM\n");
156 BIO_printf(bio_err," -outform arg output format - one of DER NET PEM\n");
157 BIO_printf(bio_err," -in arg inout file\n");
158 BIO_printf(bio_err," -out arg output file\n");
159 BIO_printf(bio_err," -des encrypt PEM output with cbc des\n");
160 BIO_printf(bio_err," -des3 encrypt PEM output with ede cbc des using 168 bit key\n");
161#ifndef NO_IDEA
162 BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n");
163#endif
164 BIO_printf(bio_err," -text print the key in text\n");
165 BIO_printf(bio_err," -noout don't print key out\n");
166 BIO_printf(bio_err," -modulus print the DSA public value\n");
167 goto end;
168 }
169
170 ERR_load_crypto_strings();
171
172 in=BIO_new(BIO_s_file());
173 out=BIO_new(BIO_s_file());
174 if ((in == NULL) || (out == NULL))
175 {
176 ERR_print_errors(bio_err);
177 goto end;
178 }
179
180 if (infile == NULL)
181 BIO_set_fp(in,stdin,BIO_NOCLOSE);
182 else
183 {
184 if (BIO_read_filename(in,infile) <= 0)
185 {
186 perror(infile);
187 goto end;
188 }
189 }
190
191 BIO_printf(bio_err,"read DSA private key\n");
192 if (informat == FORMAT_ASN1)
193 dsa=d2i_DSAPrivateKey_bio(in,NULL);
194 else if (informat == FORMAT_PEM)
195 dsa=PEM_read_bio_DSAPrivateKey(in,NULL,NULL);
196 else
197 {
198 BIO_printf(bio_err,"bad input format specified for key\n");
199 goto end;
200 }
201 if (dsa == NULL)
202 {
203 BIO_printf(bio_err,"unable to load Private Key\n");
204 ERR_print_errors(bio_err);
205 goto end;
206 }
207
208 if (outfile == NULL)
209 BIO_set_fp(out,stdout,BIO_NOCLOSE);
210 else
211 {
212 if (BIO_write_filename(out,outfile) <= 0)
213 {
214 perror(outfile);
215 goto end;
216 }
217 }
218
219 if (text)
220 if (!DSA_print(out,dsa,0))
221 {
222 perror(outfile);
223 ERR_print_errors(bio_err);
224 goto end;
225 }
226
227 if (modulus)
228 {
229 fprintf(stdout,"Public Key=");
230 BN_print(out,dsa->pub_key);
231 fprintf(stdout,"\n");
232 }
233
234 if (noout) goto end;
235 BIO_printf(bio_err,"writing DSA private key\n");
236 if (outformat == FORMAT_ASN1)
237 i=i2d_DSAPrivateKey_bio(out,dsa);
238 else if (outformat == FORMAT_PEM)
239 i=PEM_write_bio_DSAPrivateKey(out,dsa,enc,NULL,0,NULL);
240 else {
241 BIO_printf(bio_err,"bad output format specified for outfile\n");
242 goto end;
243 }
244 if (!i)
245 {
246 BIO_printf(bio_err,"unable to write private key\n");
247 ERR_print_errors(bio_err);
248 }
249 else
250 ret=0;
251end:
252 if (in != NULL) BIO_free(in);
253 if (out != NULL) BIO_free(out);
254 if (dsa != NULL) DSA_free(dsa);
255 EXIT(ret);
256 }
257
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