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 * -camellia128 - encrypt output if PEM format
88 * -camellia192 - encrypt output if PEM format
89 * -camellia256 - encrypt output if PEM format
90 * -seed        - encrypt output if PEM format
91 * -text	- print a text version
92 * -modulus	- print the DSA public key
93 */
94
95int MAIN(int, char **);
96
97int MAIN(int argc, char **argv)
98	{
99	ENGINE *e = NULL;
100	int ret=1;
101	DSA *dsa=NULL;
102	int i,badops=0;
103	const EVP_CIPHER *enc=NULL;
104	BIO *in=NULL,*out=NULL;
105	int informat,outformat,text=0,noout=0;
106	int pubin = 0, pubout = 0;
107	char *infile,*outfile,*prog;
108#ifndef OPENSSL_NO_ENGINE
109	char *engine;
110#endif
111	char *passargin = NULL, *passargout = NULL;
112	char *passin = NULL, *passout = NULL;
113	int modulus=0;
114
115	int pvk_encr = 2;
116
117	apps_startup();
118
119	if (bio_err == NULL)
120		if ((bio_err=BIO_new(BIO_s_file())) != NULL)
121			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
122
123	if (!load_config(bio_err, NULL))
124		goto end;
125
126#ifndef OPENSSL_NO_ENGINE
127	engine=NULL;
128#endif
129	infile=NULL;
130	outfile=NULL;
131	informat=FORMAT_PEM;
132	outformat=FORMAT_PEM;
133
134	prog=argv[0];
135	argc--;
136	argv++;
137	while (argc >= 1)
138		{
139		if 	(strcmp(*argv,"-inform") == 0)
140			{
141			if (--argc < 1) goto bad;
142			informat=str2fmt(*(++argv));
143			}
144		else if (strcmp(*argv,"-outform") == 0)
145			{
146			if (--argc < 1) goto bad;
147			outformat=str2fmt(*(++argv));
148			}
149		else if (strcmp(*argv,"-in") == 0)
150			{
151			if (--argc < 1) goto bad;
152			infile= *(++argv);
153			}
154		else if (strcmp(*argv,"-out") == 0)
155			{
156			if (--argc < 1) goto bad;
157			outfile= *(++argv);
158			}
159		else if (strcmp(*argv,"-passin") == 0)
160			{
161			if (--argc < 1) goto bad;
162			passargin= *(++argv);
163			}
164		else if (strcmp(*argv,"-passout") == 0)
165			{
166			if (--argc < 1) goto bad;
167			passargout= *(++argv);
168			}
169#ifndef OPENSSL_NO_ENGINE
170		else if (strcmp(*argv,"-engine") == 0)
171			{
172			if (--argc < 1) goto bad;
173			engine= *(++argv);
174			}
175#endif
176		else if (strcmp(*argv,"-pvk-strong") == 0)
177			pvk_encr=2;
178		else if (strcmp(*argv,"-pvk-weak") == 0)
179			pvk_encr=1;
180		else if (strcmp(*argv,"-pvk-none") == 0)
181			pvk_encr=0;
182		else if (strcmp(*argv,"-noout") == 0)
183			noout=1;
184		else if (strcmp(*argv,"-text") == 0)
185			text=1;
186		else if (strcmp(*argv,"-modulus") == 0)
187			modulus=1;
188		else if (strcmp(*argv,"-pubin") == 0)
189			pubin=1;
190		else if (strcmp(*argv,"-pubout") == 0)
191			pubout=1;
192		else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
193			{
194			BIO_printf(bio_err,"unknown option %s\n",*argv);
195			badops=1;
196			break;
197			}
198		argc--;
199		argv++;
200		}
201
202	if (badops)
203		{
204bad:
205		BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
206		BIO_printf(bio_err,"where options are\n");
207		BIO_printf(bio_err," -inform arg     input format - DER or PEM\n");
208		BIO_printf(bio_err," -outform arg    output format - DER or PEM\n");
209		BIO_printf(bio_err," -in arg         input file\n");
210		BIO_printf(bio_err," -passin arg     input file pass phrase source\n");
211		BIO_printf(bio_err," -out arg        output file\n");
212		BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
213#ifndef OPENSSL_NO_ENGINE
214		BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
215#endif
216		BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");
217		BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
218#ifndef OPENSSL_NO_IDEA
219		BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");
220#endif
221#ifndef OPENSSL_NO_AES
222		BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
223		BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
224#endif
225#ifndef OPENSSL_NO_CAMELLIA
226		BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
227		BIO_printf(bio_err,"                 encrypt PEM output with cbc camellia\n");
228#endif
229#ifndef OPENSSL_NO_SEED
230		BIO_printf(bio_err," -seed           encrypt PEM output with cbc seed\n");
231#endif
232		BIO_printf(bio_err," -text           print the key in text\n");
233		BIO_printf(bio_err," -noout          don't print key out\n");
234		BIO_printf(bio_err," -modulus        print the DSA public value\n");
235		goto end;
236		}
237
238	ERR_load_crypto_strings();
239
240#ifndef OPENSSL_NO_ENGINE
241        e = setup_engine(bio_err, engine, 0);
242#endif
243
244	if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
245		BIO_printf(bio_err, "Error getting passwords\n");
246		goto end;
247	}
248
249	in=BIO_new(BIO_s_file());
250	out=BIO_new(BIO_s_file());
251	if ((in == NULL) || (out == NULL))
252		{
253		ERR_print_errors(bio_err);
254		goto end;
255		}
256
257	if (infile == NULL)
258		BIO_set_fp(in,stdin,BIO_NOCLOSE);
259	else
260		{
261		if (BIO_read_filename(in,infile) <= 0)
262			{
263			perror(infile);
264			goto end;
265			}
266		}
267
268	BIO_printf(bio_err,"read DSA key\n");
269
270		{
271		EVP_PKEY	*pkey;
272
273		if (pubin)
274			pkey = load_pubkey(bio_err, infile, informat, 1,
275				passin, e, "Public Key");
276		else
277			pkey = load_key(bio_err, infile, informat, 1,
278				passin, e, "Private Key");
279
280		if (pkey)
281			{
282			dsa = EVP_PKEY_get1_DSA(pkey);
283			EVP_PKEY_free(pkey);
284			}
285		}
286	if (dsa == NULL)
287		{
288		BIO_printf(bio_err,"unable to load Key\n");
289		ERR_print_errors(bio_err);
290		goto end;
291		}
292
293	if (outfile == NULL)
294		{
295		BIO_set_fp(out,stdout,BIO_NOCLOSE);
296#ifdef OPENSSL_SYS_VMS
297		{
298		BIO *tmpbio = BIO_new(BIO_f_linebuffer());
299		out = BIO_push(tmpbio, out);
300		}
301#endif
302		}
303	else
304		{
305		if (BIO_write_filename(out,outfile) <= 0)
306			{
307			perror(outfile);
308			goto end;
309			}
310		}
311
312	if (text)
313		if (!DSA_print(out,dsa,0))
314			{
315			perror(outfile);
316			ERR_print_errors(bio_err);
317			goto end;
318			}
319
320	if (modulus)
321		{
322		fprintf(stdout,"Public Key=");
323		BN_print(out,dsa->pub_key);
324		fprintf(stdout,"\n");
325		}
326
327	if (noout) goto end;
328	BIO_printf(bio_err,"writing DSA key\n");
329	if 	(outformat == FORMAT_ASN1) {
330		if(pubin || pubout) i=i2d_DSA_PUBKEY_bio(out,dsa);
331		else i=i2d_DSAPrivateKey_bio(out,dsa);
332	} else if (outformat == FORMAT_PEM) {
333		if(pubin || pubout)
334			i=PEM_write_bio_DSA_PUBKEY(out,dsa);
335		else i=PEM_write_bio_DSAPrivateKey(out,dsa,enc,
336							NULL,0,NULL, passout);
337#if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_RC4)
338	} else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
339		EVP_PKEY *pk;
340		pk = EVP_PKEY_new();
341		EVP_PKEY_set1_DSA(pk, dsa);
342		if (outformat == FORMAT_PVK)
343			i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
344		else if (pubin || pubout)
345			i = i2b_PublicKey_bio(out, pk);
346		else
347			i = i2b_PrivateKey_bio(out, pk);
348		EVP_PKEY_free(pk);
349#endif
350	} else {
351		BIO_printf(bio_err,"bad output format specified for outfile\n");
352		goto end;
353		}
354	if (i <= 0)
355		{
356		BIO_printf(bio_err,"unable to write private key\n");
357		ERR_print_errors(bio_err);
358		}
359	else
360		ret=0;
361end:
362	if(in != NULL) BIO_free(in);
363	if(out != NULL) BIO_free_all(out);
364	if(dsa != NULL) DSA_free(dsa);
365	if(passin) OPENSSL_free(passin);
366	if(passout) OPENSSL_free(passout);
367	apps_shutdown();
368	OPENSSL_EXIT(ret);
369	}
370#else /* !OPENSSL_NO_DSA */
371
372# if PEDANTIC
373static void *dummy=&dummy;
374# endif
375
376#endif
377