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