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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 
98 int MAIN(int, char **);
99 
MAIN(int argc,char ** argv)100 int 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 		{
212 bad:
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;
436 end:
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
447 static void *dummy=&dummy;
448 # endif
449 
450 #endif
451