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 * -seed	- encrypt output if PEM format
85 * -aes128	- encrypt output if PEM format
86 * -aes192	- encrypt output if PEM format
87 * -aes256	- encrypt output if PEM format
88 * -camellia128 - encrypt output if PEM format
89 * -camellia192 - encrypt output if PEM format
90 * -camellia256 - encrypt output if PEM format
91 * -text	- print a text version
92 * -modulus	- print the RSA key modulus
93 * -check	- verify key consistency
94 * -pubin	- Expect a public key in input file.
95 * -pubout	- Output a public key.
96 */
97
98int MAIN(int, char **);
99
100int MAIN(int argc, char **argv)
101	{
102	ENGINE *e = NULL;
103	int ret=1;
104	RSA *rsa=NULL;
105	int i,badops=0, sgckey=0;
106	const EVP_CIPHER *enc=NULL;
107	BIO *out=NULL;
108	int informat,outformat,text=0,check=0,noout=0;
109	int pubin = 0, pubout = 0;
110	char *infile,*outfile,*prog;
111	char *passargin = NULL, *passargout = NULL;
112	char *passin = NULL, *passout = NULL;
113#ifndef OPENSSL_NO_ENGINE
114	char *engine=NULL;
115#endif
116	int modulus=0;
117
118	int pvk_encr = 2;
119
120	apps_startup();
121
122	if (bio_err == NULL)
123		if ((bio_err=BIO_new(BIO_s_file())) != NULL)
124			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
125
126	if (!load_config(bio_err, NULL))
127		goto end;
128
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,"-sgckey") == 0)
177			sgckey=1;
178		else if (strcmp(*argv,"-pubin") == 0)
179			pubin=1;
180		else if (strcmp(*argv,"-pubout") == 0)
181			pubout=1;
182		else if (strcmp(*argv,"-RSAPublicKey_in") == 0)
183			pubin = 2;
184		else if (strcmp(*argv,"-RSAPublicKey_out") == 0)
185			pubout = 2;
186		else if (strcmp(*argv,"-pvk-strong") == 0)
187			pvk_encr=2;
188		else if (strcmp(*argv,"-pvk-weak") == 0)
189			pvk_encr=1;
190		else if (strcmp(*argv,"-pvk-none") == 0)
191			pvk_encr=0;
192		else if (strcmp(*argv,"-noout") == 0)
193			noout=1;
194		else if (strcmp(*argv,"-text") == 0)
195			text=1;
196		else if (strcmp(*argv,"-modulus") == 0)
197			modulus=1;
198		else if (strcmp(*argv,"-check") == 0)
199			check=1;
200		else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
201			{
202			BIO_printf(bio_err,"unknown option %s\n",*argv);
203			badops=1;
204			break;
205			}
206		argc--;
207		argv++;
208		}
209
210	if (badops)
211		{
212bad:
213		BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
214		BIO_printf(bio_err,"where options are\n");
215		BIO_printf(bio_err," -inform arg     input format - one of DER NET PEM\n");
216		BIO_printf(bio_err," -outform arg    output format - one of DER NET PEM\n");
217		BIO_printf(bio_err," -in arg         input file\n");
218		BIO_printf(bio_err," -sgckey         Use IIS SGC key format\n");
219		BIO_printf(bio_err," -passin arg     input file pass phrase source\n");
220		BIO_printf(bio_err," -out arg        output file\n");
221		BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
222		BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");
223		BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
224#ifndef OPENSSL_NO_IDEA
225		BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");
226#endif
227#ifndef OPENSSL_NO_SEED
228		BIO_printf(bio_err," -seed           encrypt PEM output with cbc seed\n");
229#endif
230#ifndef OPENSSL_NO_AES
231		BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
232		BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
233#endif
234#ifndef OPENSSL_NO_CAMELLIA
235		BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
236		BIO_printf(bio_err,"                 encrypt PEM output with cbc camellia\n");
237#endif
238		BIO_printf(bio_err," -text           print the key in text\n");
239		BIO_printf(bio_err," -noout          don't print key out\n");
240		BIO_printf(bio_err," -modulus        print the RSA key modulus\n");
241		BIO_printf(bio_err," -check          verify key consistency\n");
242		BIO_printf(bio_err," -pubin          expect a public key in input file\n");
243		BIO_printf(bio_err," -pubout         output a public key\n");
244#ifndef OPENSSL_NO_ENGINE
245		BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
246#endif
247		goto end;
248		}
249
250	ERR_load_crypto_strings();
251
252#ifndef OPENSSL_NO_ENGINE
253        e = setup_engine(bio_err, engine, 0);
254#endif
255
256	if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
257		BIO_printf(bio_err, "Error getting passwords\n");
258		goto end;
259	}
260
261	if(check && pubin) {
262		BIO_printf(bio_err, "Only private keys can be checked\n");
263		goto end;
264	}
265
266	out=BIO_new(BIO_s_file());
267
268	{
269		EVP_PKEY	*pkey;
270
271		if (pubin)
272			{
273			int tmpformat=-1;
274			if (pubin == 2)
275				{
276				if (informat == FORMAT_PEM)
277					tmpformat = FORMAT_PEMRSA;
278				else if (informat == FORMAT_ASN1)
279					tmpformat = FORMAT_ASN1RSA;
280				}
281			else if (informat == FORMAT_NETSCAPE && sgckey)
282				tmpformat = FORMAT_IISSGC;
283			else
284				tmpformat = informat;
285
286			pkey = load_pubkey(bio_err, infile, tmpformat, 1,
287				passin, e, "Public Key");
288			}
289		else
290			pkey = load_key(bio_err, infile,
291				(informat == FORMAT_NETSCAPE && sgckey ?
292					FORMAT_IISSGC : informat), 1,
293				passin, e, "Private Key");
294
295		if (pkey != NULL)
296			rsa = EVP_PKEY_get1_RSA(pkey);
297		EVP_PKEY_free(pkey);
298	}
299
300	if (rsa == NULL)
301		{
302		ERR_print_errors(bio_err);
303		goto end;
304		}
305
306	if (outfile == NULL)
307		{
308		BIO_set_fp(out,stdout,BIO_NOCLOSE);
309#ifdef OPENSSL_SYS_VMS
310		{
311		BIO *tmpbio = BIO_new(BIO_f_linebuffer());
312		out = BIO_push(tmpbio, out);
313		}
314#endif
315		}
316	else
317		{
318		if (BIO_write_filename(out,outfile) <= 0)
319			{
320			perror(outfile);
321			goto end;
322			}
323		}
324
325	if (text)
326		if (!RSA_print(out,rsa,0))
327			{
328			perror(outfile);
329			ERR_print_errors(bio_err);
330			goto end;
331			}
332
333	if (modulus)
334		{
335		BIO_printf(out,"Modulus=");
336		BN_print(out,rsa->n);
337		BIO_printf(out,"\n");
338		}
339
340	if (check)
341		{
342		int r = RSA_check_key(rsa);
343
344		if (r == 1)
345			BIO_printf(out,"RSA key ok\n");
346		else if (r == 0)
347			{
348			unsigned long err;
349
350			while ((err = ERR_peek_error()) != 0 &&
351				ERR_GET_LIB(err) == ERR_LIB_RSA &&
352				ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
353				ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE)
354				{
355				BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(err));
356				ERR_get_error(); /* remove e from error stack */
357				}
358			}
359
360		if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */
361			{
362			ERR_print_errors(bio_err);
363			goto end;
364			}
365		}
366
367	if (noout)
368		{
369		ret = 0;
370		goto end;
371		}
372	BIO_printf(bio_err,"writing RSA key\n");
373	if 	(outformat == FORMAT_ASN1) {
374		if(pubout || pubin)
375			{
376			if (pubout == 2)
377				i=i2d_RSAPublicKey_bio(out,rsa);
378			else
379				i=i2d_RSA_PUBKEY_bio(out,rsa);
380			}
381		else i=i2d_RSAPrivateKey_bio(out,rsa);
382	}
383#ifndef OPENSSL_NO_RC4
384	else if (outformat == FORMAT_NETSCAPE)
385		{
386		unsigned char *p,*pp;
387		int size;
388
389		i=1;
390		size=i2d_RSA_NET(rsa,NULL,NULL, sgckey);
391		if ((p=(unsigned char *)OPENSSL_malloc(size)) == NULL)
392			{
393			BIO_printf(bio_err,"Memory allocation failure\n");
394			goto end;
395			}
396		pp=p;
397		i2d_RSA_NET(rsa,&p,NULL, sgckey);
398		BIO_write(out,(char *)pp,size);
399		OPENSSL_free(pp);
400		}
401#endif
402	else if (outformat == FORMAT_PEM) {
403		if(pubout || pubin)
404			{
405			if (pubout == 2)
406		    		i=PEM_write_bio_RSAPublicKey(out,rsa);
407			else
408		    		i=PEM_write_bio_RSA_PUBKEY(out,rsa);
409			}
410		else i=PEM_write_bio_RSAPrivateKey(out,rsa,
411						enc,NULL,0,NULL,passout);
412#if !defined(OPENSSL_NO_DSA) && !defined(OPENSSL_NO_RC4)
413	} else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
414		EVP_PKEY *pk;
415		pk = EVP_PKEY_new();
416		EVP_PKEY_set1_RSA(pk, rsa);
417		if (outformat == FORMAT_PVK)
418			i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
419		else if (pubin || pubout)
420			i = i2b_PublicKey_bio(out, pk);
421		else
422			i = i2b_PrivateKey_bio(out, pk);
423		EVP_PKEY_free(pk);
424#endif
425	} else	{
426		BIO_printf(bio_err,"bad output format specified for outfile\n");
427		goto end;
428		}
429	if (i <= 0)
430		{
431		BIO_printf(bio_err,"unable to write key\n");
432		ERR_print_errors(bio_err);
433		}
434	else
435		ret=0;
436end:
437	if(out != NULL) BIO_free_all(out);
438	if(rsa != NULL) RSA_free(rsa);
439	if(passin) OPENSSL_free(passin);
440	if(passout) OPENSSL_free(passout);
441	apps_shutdown();
442	OPENSSL_EXIT(ret);
443	}
444#else /* !OPENSSL_NO_RSA */
445
446# if PEDANTIC
447static void *dummy=&dummy;
448# endif
449
450#endif
451