rsa.c revision 162912
1/* apps/rsa.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>
60#ifndef OPENSSL_NO_RSA
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/rsa.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	rsa_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 * -text	- print a text version
91 * -modulus	- print the RSA key modulus
92 * -check	- verify key consistency
93 * -pubin	- Expect a public key in input file.
94 * -pubout	- Output a public key.
95 */
96
97int MAIN(int, char **);
98
99int MAIN(int argc, char **argv)
100	{
101	ENGINE *e = NULL;
102	int ret=1;
103	RSA *rsa=NULL;
104	int i,badops=0, sgckey=0;
105	const EVP_CIPHER *enc=NULL;
106	BIO *out=NULL;
107	int informat,outformat,text=0,check=0,noout=0;
108	int pubin = 0, pubout = 0;
109	char *infile,*outfile,*prog;
110	char *passargin = NULL, *passargout = NULL;
111	char *passin = NULL, *passout = NULL;
112#ifndef OPENSSL_NO_ENGINE
113	char *engine=NULL;
114#endif
115	int modulus=0;
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	infile=NULL;
127	outfile=NULL;
128	informat=FORMAT_PEM;
129	outformat=FORMAT_PEM;
130
131	prog=argv[0];
132	argc--;
133	argv++;
134	while (argc >= 1)
135		{
136		if 	(strcmp(*argv,"-inform") == 0)
137			{
138			if (--argc < 1) goto bad;
139			informat=str2fmt(*(++argv));
140			}
141		else if (strcmp(*argv,"-outform") == 0)
142			{
143			if (--argc < 1) goto bad;
144			outformat=str2fmt(*(++argv));
145			}
146		else if (strcmp(*argv,"-in") == 0)
147			{
148			if (--argc < 1) goto bad;
149			infile= *(++argv);
150			}
151		else if (strcmp(*argv,"-out") == 0)
152			{
153			if (--argc < 1) goto bad;
154			outfile= *(++argv);
155			}
156		else if (strcmp(*argv,"-passin") == 0)
157			{
158			if (--argc < 1) goto bad;
159			passargin= *(++argv);
160			}
161		else if (strcmp(*argv,"-passout") == 0)
162			{
163			if (--argc < 1) goto bad;
164			passargout= *(++argv);
165			}
166#ifndef OPENSSL_NO_ENGINE
167		else if (strcmp(*argv,"-engine") == 0)
168			{
169			if (--argc < 1) goto bad;
170			engine= *(++argv);
171			}
172#endif
173		else if (strcmp(*argv,"-sgckey") == 0)
174			sgckey=1;
175		else if (strcmp(*argv,"-pubin") == 0)
176			pubin=1;
177		else if (strcmp(*argv,"-pubout") == 0)
178			pubout=1;
179		else if (strcmp(*argv,"-noout") == 0)
180			noout=1;
181		else if (strcmp(*argv,"-text") == 0)
182			text=1;
183		else if (strcmp(*argv,"-modulus") == 0)
184			modulus=1;
185		else if (strcmp(*argv,"-check") == 0)
186			check=1;
187		else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
188			{
189			BIO_printf(bio_err,"unknown option %s\n",*argv);
190			badops=1;
191			break;
192			}
193		argc--;
194		argv++;
195		}
196
197	if (badops)
198		{
199bad:
200		BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
201		BIO_printf(bio_err,"where options are\n");
202		BIO_printf(bio_err," -inform arg     input format - one of DER NET PEM\n");
203		BIO_printf(bio_err," -outform arg    output format - one of DER NET PEM\n");
204		BIO_printf(bio_err," -in arg         input file\n");
205		BIO_printf(bio_err," -sgckey         Use IIS SGC key format\n");
206		BIO_printf(bio_err," -passin arg     input file pass phrase source\n");
207		BIO_printf(bio_err," -out arg        output file\n");
208		BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
209		BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");
210		BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
211#ifndef OPENSSL_NO_IDEA
212		BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");
213#endif
214#ifndef OPENSSL_NO_AES
215		BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
216		BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
217#endif
218#ifndef OPENSSL_NO_CAMELLIA
219		BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
220		BIO_printf(bio_err,"                 encrypt PEM output with cbc camellia\n");
221#endif
222		BIO_printf(bio_err," -text           print the key in text\n");
223		BIO_printf(bio_err," -noout          don't print key out\n");
224		BIO_printf(bio_err," -modulus        print the RSA key modulus\n");
225		BIO_printf(bio_err," -check          verify key consistency\n");
226		BIO_printf(bio_err," -pubin          expect a public key in input file\n");
227		BIO_printf(bio_err," -pubout         output a public key\n");
228#ifndef OPENSSL_NO_ENGINE
229		BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
230#endif
231		goto end;
232		}
233
234	ERR_load_crypto_strings();
235
236#ifndef OPENSSL_NO_ENGINE
237        e = setup_engine(bio_err, engine, 0);
238#endif
239
240	if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
241		BIO_printf(bio_err, "Error getting passwords\n");
242		goto end;
243	}
244
245	if(check && pubin) {
246		BIO_printf(bio_err, "Only private keys can be checked\n");
247		goto end;
248	}
249
250	out=BIO_new(BIO_s_file());
251
252	{
253		EVP_PKEY	*pkey;
254
255		if (pubin)
256			pkey = load_pubkey(bio_err, infile,
257				(informat == FORMAT_NETSCAPE && sgckey ?
258					FORMAT_IISSGC : informat), 1,
259				passin, e, "Public Key");
260		else
261			pkey = load_key(bio_err, infile,
262				(informat == FORMAT_NETSCAPE && sgckey ?
263					FORMAT_IISSGC : informat), 1,
264				passin, e, "Private Key");
265
266		if (pkey != NULL)
267		rsa = pkey == NULL ? NULL : EVP_PKEY_get1_RSA(pkey);
268		EVP_PKEY_free(pkey);
269	}
270
271	if (rsa == NULL)
272		{
273		ERR_print_errors(bio_err);
274		goto end;
275		}
276
277	if (outfile == NULL)
278		{
279		BIO_set_fp(out,stdout,BIO_NOCLOSE);
280#ifdef OPENSSL_SYS_VMS
281		{
282		BIO *tmpbio = BIO_new(BIO_f_linebuffer());
283		out = BIO_push(tmpbio, out);
284		}
285#endif
286		}
287	else
288		{
289		if (BIO_write_filename(out,outfile) <= 0)
290			{
291			perror(outfile);
292			goto end;
293			}
294		}
295
296	if (text)
297		if (!RSA_print(out,rsa,0))
298			{
299			perror(outfile);
300			ERR_print_errors(bio_err);
301			goto end;
302			}
303
304	if (modulus)
305		{
306		BIO_printf(out,"Modulus=");
307		BN_print(out,rsa->n);
308		BIO_printf(out,"\n");
309		}
310
311	if (check)
312		{
313		int r = RSA_check_key(rsa);
314
315		if (r == 1)
316			BIO_printf(out,"RSA key ok\n");
317		else if (r == 0)
318			{
319			unsigned long err;
320
321			while ((err = ERR_peek_error()) != 0 &&
322				ERR_GET_LIB(err) == ERR_LIB_RSA &&
323				ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
324				ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE)
325				{
326				BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(err));
327				ERR_get_error(); /* remove e from error stack */
328				}
329			}
330
331		if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */
332			{
333			ERR_print_errors(bio_err);
334			goto end;
335			}
336		}
337
338	if (noout)
339		{
340		ret = 0;
341		goto end;
342		}
343	BIO_printf(bio_err,"writing RSA key\n");
344	if 	(outformat == FORMAT_ASN1) {
345		if(pubout || pubin) i=i2d_RSA_PUBKEY_bio(out,rsa);
346		else i=i2d_RSAPrivateKey_bio(out,rsa);
347	}
348#ifndef OPENSSL_NO_RC4
349	else if (outformat == FORMAT_NETSCAPE)
350		{
351		unsigned char *p,*pp;
352		int size;
353
354		i=1;
355		size=i2d_RSA_NET(rsa,NULL,NULL, sgckey);
356		if ((p=(unsigned char *)OPENSSL_malloc(size)) == NULL)
357			{
358			BIO_printf(bio_err,"Memory allocation failure\n");
359			goto end;
360			}
361		pp=p;
362		i2d_RSA_NET(rsa,&p,NULL, sgckey);
363		BIO_write(out,(char *)pp,size);
364		OPENSSL_free(pp);
365		}
366#endif
367	else if (outformat == FORMAT_PEM) {
368		if(pubout || pubin)
369		    i=PEM_write_bio_RSA_PUBKEY(out,rsa);
370		else i=PEM_write_bio_RSAPrivateKey(out,rsa,
371						enc,NULL,0,NULL,passout);
372	} else	{
373		BIO_printf(bio_err,"bad output format specified for outfile\n");
374		goto end;
375		}
376	if (!i)
377		{
378		BIO_printf(bio_err,"unable to write key\n");
379		ERR_print_errors(bio_err);
380		}
381	else
382		ret=0;
383end:
384	if(out != NULL) BIO_free_all(out);
385	if(rsa != NULL) RSA_free(rsa);
386	if(passin) OPENSSL_free(passin);
387	if(passout) OPENSSL_free(passout);
388	apps_shutdown();
389	OPENSSL_EXIT(ret);
390	}
391#else /* !OPENSSL_NO_RSA */
392
393# if PEDANTIC
394static void *dummy=&dummy;
395# endif
396
397#endif
398