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 <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */
60 #ifndef OPENSSL_NO_DSA
61 #include <stdio.h>
62 #include <stdlib.h>
63 #include <string.h>
64 #include <time.h>
65 #include "apps.h"
66 #include <openssl/bio.h>
67 #include <openssl/err.h>
68 #include <openssl/dsa.h>
69 #include <openssl/evp.h>
70 #include <openssl/x509.h>
71 #include <openssl/pem.h>
72 #include <openssl/bn.h>
73
74 #undef PROG
75 #define PROG dsa_main
76
77 /* -inform arg - input format - default PEM (one of DER, NET or PEM)
78 * -outform arg - output format - default PEM
79 * -in arg - input file - default stdin
80 * -out arg - output file - default stdout
81 * -des - encrypt output if PEM format with DES in cbc mode
82 * -des3 - encrypt output if PEM format
83 * -idea - encrypt output if PEM format
84 * -aes128 - encrypt output if PEM format
85 * -aes192 - encrypt output if PEM format
86 * -aes256 - encrypt output if PEM format
87 * -text - print a text version
88 * -modulus - print the DSA public key
89 */
90
91 int MAIN(int, char **);
92
MAIN(int argc,char ** argv)93 int MAIN(int argc, char **argv)
94 {
95 #ifndef OPENSSL_NO_ENGINE
96 ENGINE *e = NULL;
97 #endif
98 int ret=1;
99 DSA *dsa=NULL;
100 int i,badops=0;
101 const EVP_CIPHER *enc=NULL;
102 BIO *in=NULL,*out=NULL;
103 int informat,outformat,text=0,noout=0;
104 int pubin = 0, pubout = 0;
105 char *infile,*outfile,*prog;
106 #ifndef OPENSSL_NO_ENGINE
107 char *engine;
108 #endif
109 char *passargin = NULL, *passargout = NULL;
110 char *passin = NULL, *passout = NULL;
111 int modulus=0;
112
113 apps_startup();
114
115 if (bio_err == NULL)
116 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
117 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
118
119 if (!load_config(bio_err, NULL))
120 goto end;
121
122 #ifndef OPENSSL_NO_ENGINE
123 engine=NULL;
124 #endif
125 infile=NULL;
126 outfile=NULL;
127 informat=FORMAT_PEM;
128 outformat=FORMAT_PEM;
129
130 prog=argv[0];
131 argc--;
132 argv++;
133 while (argc >= 1)
134 {
135 if (strcmp(*argv,"-inform") == 0)
136 {
137 if (--argc < 1) goto bad;
138 informat=str2fmt(*(++argv));
139 }
140 else if (strcmp(*argv,"-outform") == 0)
141 {
142 if (--argc < 1) goto bad;
143 outformat=str2fmt(*(++argv));
144 }
145 else if (strcmp(*argv,"-in") == 0)
146 {
147 if (--argc < 1) goto bad;
148 infile= *(++argv);
149 }
150 else if (strcmp(*argv,"-out") == 0)
151 {
152 if (--argc < 1) goto bad;
153 outfile= *(++argv);
154 }
155 else if (strcmp(*argv,"-passin") == 0)
156 {
157 if (--argc < 1) goto bad;
158 passargin= *(++argv);
159 }
160 else if (strcmp(*argv,"-passout") == 0)
161 {
162 if (--argc < 1) goto bad;
163 passargout= *(++argv);
164 }
165 #ifndef OPENSSL_NO_ENGINE
166 else if (strcmp(*argv,"-engine") == 0)
167 {
168 if (--argc < 1) goto bad;
169 engine= *(++argv);
170 }
171 #endif
172 else if (strcmp(*argv,"-noout") == 0)
173 noout=1;
174 else if (strcmp(*argv,"-text") == 0)
175 text=1;
176 else if (strcmp(*argv,"-modulus") == 0)
177 modulus=1;
178 else if (strcmp(*argv,"-pubin") == 0)
179 pubin=1;
180 else if (strcmp(*argv,"-pubout") == 0)
181 pubout=1;
182 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
183 {
184 BIO_printf(bio_err,"unknown option %s\n",*argv);
185 badops=1;
186 break;
187 }
188 argc--;
189 argv++;
190 }
191
192 if (badops)
193 {
194 bad:
195 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
196 BIO_printf(bio_err,"where options are\n");
197 BIO_printf(bio_err," -inform arg input format - DER or PEM\n");
198 BIO_printf(bio_err," -outform arg output format - DER or PEM\n");
199 BIO_printf(bio_err," -in arg input file\n");
200 BIO_printf(bio_err," -passin arg input file pass phrase source\n");
201 BIO_printf(bio_err," -out arg output file\n");
202 BIO_printf(bio_err," -passout arg output file pass phrase source\n");
203 #ifndef OPENSSL_NO_ENGINE
204 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
205 #endif
206 BIO_printf(bio_err," -des encrypt PEM output with cbc des\n");
207 BIO_printf(bio_err," -des3 encrypt PEM output with ede cbc des using 168 bit key\n");
208 #ifndef OPENSSL_NO_IDEA
209 BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n");
210 #endif
211 #ifndef OPENSSL_NO_AES
212 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
213 BIO_printf(bio_err," encrypt PEM output with cbc aes\n");
214 #endif
215 BIO_printf(bio_err," -text print the key in text\n");
216 BIO_printf(bio_err," -noout don't print key out\n");
217 BIO_printf(bio_err," -modulus print the DSA public value\n");
218 goto end;
219 }
220
221 ERR_load_crypto_strings();
222
223 #ifndef OPENSSL_NO_ENGINE
224 e = setup_engine(bio_err, engine, 0);
225 #endif
226
227 if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
228 BIO_printf(bio_err, "Error getting passwords\n");
229 goto end;
230 }
231
232 in=BIO_new(BIO_s_file());
233 out=BIO_new(BIO_s_file());
234 if ((in == NULL) || (out == NULL))
235 {
236 ERR_print_errors(bio_err);
237 goto end;
238 }
239
240 if (infile == NULL)
241 BIO_set_fp(in,stdin,BIO_NOCLOSE);
242 else
243 {
244 if (BIO_read_filename(in,infile) <= 0)
245 {
246 perror(infile);
247 goto end;
248 }
249 }
250
251 BIO_printf(bio_err,"read DSA key\n");
252 if (informat == FORMAT_ASN1) {
253 if(pubin) dsa=d2i_DSA_PUBKEY_bio(in,NULL);
254 else dsa=d2i_DSAPrivateKey_bio(in,NULL);
255 } else if (informat == FORMAT_PEM) {
256 if(pubin) dsa=PEM_read_bio_DSA_PUBKEY(in,NULL, NULL, NULL);
257 else dsa=PEM_read_bio_DSAPrivateKey(in,NULL,NULL,passin);
258 } else
259 {
260 BIO_printf(bio_err,"bad input format specified for key\n");
261 goto end;
262 }
263 if (dsa == NULL)
264 {
265 BIO_printf(bio_err,"unable to load Key\n");
266 ERR_print_errors(bio_err);
267 goto end;
268 }
269
270 if (outfile == NULL)
271 {
272 BIO_set_fp(out,stdout,BIO_NOCLOSE);
273 #ifdef OPENSSL_SYS_VMS
274 {
275 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
276 out = BIO_push(tmpbio, out);
277 }
278 #endif
279 }
280 else
281 {
282 if (BIO_write_filename(out,outfile) <= 0)
283 {
284 perror(outfile);
285 goto end;
286 }
287 }
288
289 if (text)
290 if (!DSA_print(out,dsa,0))
291 {
292 perror(outfile);
293 ERR_print_errors(bio_err);
294 goto end;
295 }
296
297 if (modulus)
298 {
299 fprintf(stdout,"Public Key=");
300 BN_print(out,dsa->pub_key);
301 fprintf(stdout,"\n");
302 }
303
304 if (noout) goto end;
305 BIO_printf(bio_err,"writing DSA key\n");
306 if (outformat == FORMAT_ASN1) {
307 if(pubin || pubout) i=i2d_DSA_PUBKEY_bio(out,dsa);
308 else i=i2d_DSAPrivateKey_bio(out,dsa);
309 } else if (outformat == FORMAT_PEM) {
310 if(pubin || pubout)
311 i=PEM_write_bio_DSA_PUBKEY(out,dsa);
312 else i=PEM_write_bio_DSAPrivateKey(out,dsa,enc,
313 NULL,0,NULL, passout);
314 } else {
315 BIO_printf(bio_err,"bad output format specified for outfile\n");
316 goto end;
317 }
318 if (!i)
319 {
320 BIO_printf(bio_err,"unable to write private key\n");
321 ERR_print_errors(bio_err);
322 }
323 else
324 ret=0;
325 end:
326 if(in != NULL) BIO_free(in);
327 if(out != NULL) BIO_free_all(out);
328 if(dsa != NULL) DSA_free(dsa);
329 if(passin) OPENSSL_free(passin);
330 if(passout) OPENSSL_free(passout);
331 apps_shutdown();
332 OPENSSL_EXIT(ret);
333 }
334 #endif
335