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