modes/ctr128.c: make it indent-friendly.
[openssl.git] / apps / rsa.c
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 /*-
78  * -inform arg  - input format - default PEM (one of DER, NET or PEM)
79  * -outform arg - output format - default PEM
80  * -in arg      - input file - default stdin
81  * -out arg     - output file - default stdout
82  * -des         - encrypt output if PEM format with DES in cbc mode
83  * -des3        - encrypt output if PEM format
84  * -idea        - encrypt output if PEM format
85  * -seed        - encrypt output if PEM format
86  * -aes128      - encrypt output if PEM format
87  * -aes192      - encrypt output if PEM format
88  * -aes256      - encrypt output if PEM format
89  * -camellia128 - encrypt output if PEM format
90  * -camellia192 - encrypt output if PEM format
91  * -camellia256 - encrypt output if PEM format
92  * -text        - print a text version
93  * -modulus     - print the RSA key modulus
94  * -check       - verify key consistency
95  * -pubin       - Expect a public key in input file.
96  * -pubout      - Output a public key.
97  */
98
99 int MAIN(int, char **);
100
101 int MAIN(int argc, char **argv)
102         {
103         ENGINE *e = NULL;
104         int ret=1;
105         RSA *rsa=NULL;
106         int i,badops=0, sgckey=0;
107         const EVP_CIPHER *enc=NULL;
108         BIO *out=NULL;
109         int informat,outformat,text=0,check=0,noout=0;
110         int pubin = 0, pubout = 0;
111         char *infile,*outfile,*prog;
112         char *passargin = NULL, *passargout = NULL;
113         char *passin = NULL, *passout = NULL;
114 #ifndef OPENSSL_NO_ENGINE
115         char *engine=NULL;
116 #endif
117         int modulus=0;
118
119         int pvk_encr = 2;
120
121         apps_startup();
122
123         if (bio_err == NULL)
124                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
125                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
126
127         if (!load_config(bio_err, NULL))
128                 goto end;
129
130         infile=NULL;
131         outfile=NULL;
132         informat=FORMAT_PEM;
133         outformat=FORMAT_PEM;
134
135         prog=argv[0];
136         argc--;
137         argv++;
138         while (argc >= 1)
139                 {
140                 if      (strcmp(*argv,"-inform") == 0)
141                         {
142                         if (--argc < 1) goto bad;
143                         informat=str2fmt(*(++argv));
144                         }
145                 else if (strcmp(*argv,"-outform") == 0)
146                         {
147                         if (--argc < 1) goto bad;
148                         outformat=str2fmt(*(++argv));
149                         }
150                 else if (strcmp(*argv,"-in") == 0)
151                         {
152                         if (--argc < 1) goto bad;
153                         infile= *(++argv);
154                         }
155                 else if (strcmp(*argv,"-out") == 0)
156                         {
157                         if (--argc < 1) goto bad;
158                         outfile= *(++argv);
159                         }
160                 else if (strcmp(*argv,"-passin") == 0)
161                         {
162                         if (--argc < 1) goto bad;
163                         passargin= *(++argv);
164                         }
165                 else if (strcmp(*argv,"-passout") == 0)
166                         {
167                         if (--argc < 1) goto bad;
168                         passargout= *(++argv);
169                         }
170 #ifndef OPENSSL_NO_ENGINE
171                 else if (strcmp(*argv,"-engine") == 0)
172                         {
173                         if (--argc < 1) goto bad;
174                         engine= *(++argv);
175                         }
176 #endif
177                 else if (strcmp(*argv,"-sgckey") == 0)
178                         sgckey=1;
179                 else if (strcmp(*argv,"-pubin") == 0)
180                         pubin=1;
181                 else if (strcmp(*argv,"-pubout") == 0)
182                         pubout=1;
183                 else if (strcmp(*argv,"-RSAPublicKey_in") == 0)
184                         pubin = 2;
185                 else if (strcmp(*argv,"-RSAPublicKey_out") == 0)
186                         pubout = 2;
187                 else if (strcmp(*argv,"-pvk-strong") == 0)
188                         pvk_encr=2;
189                 else if (strcmp(*argv,"-pvk-weak") == 0)
190                         pvk_encr=1;
191                 else if (strcmp(*argv,"-pvk-none") == 0)
192                         pvk_encr=0;
193                 else if (strcmp(*argv,"-noout") == 0)
194                         noout=1;
195                 else if (strcmp(*argv,"-text") == 0)
196                         text=1;
197                 else if (strcmp(*argv,"-modulus") == 0)
198                         modulus=1;
199                 else if (strcmp(*argv,"-check") == 0)
200                         check=1;
201                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
202                         {
203                         BIO_printf(bio_err,"unknown option %s\n",*argv);
204                         badops=1;
205                         break;
206                         }
207                 argc--;
208                 argv++;
209                 }
210
211         if (badops)
212                 {
213 bad:
214                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
215                 BIO_printf(bio_err,"where options are\n");
216                 BIO_printf(bio_err," -inform arg     input format - one of DER NET PEM\n");
217                 BIO_printf(bio_err," -outform arg    output format - one of DER NET PEM\n");
218                 BIO_printf(bio_err," -in arg         input file\n");
219                 BIO_printf(bio_err," -sgckey         Use IIS SGC key format\n");
220                 BIO_printf(bio_err," -passin arg     input file pass phrase source\n");
221                 BIO_printf(bio_err," -out arg        output file\n");
222                 BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
223                 BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");
224                 BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
225 #ifndef OPENSSL_NO_IDEA
226                 BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");
227 #endif
228 #ifndef OPENSSL_NO_SEED
229                 BIO_printf(bio_err," -seed           encrypt PEM output with cbc seed\n");
230 #endif
231 #ifndef OPENSSL_NO_AES
232                 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
233                 BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
234 #endif
235 #ifndef OPENSSL_NO_CAMELLIA
236                 BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
237                 BIO_printf(bio_err,"                 encrypt PEM output with cbc camellia\n");
238 #endif
239                 BIO_printf(bio_err," -text           print the key in text\n");
240                 BIO_printf(bio_err," -noout          don't print key out\n");
241                 BIO_printf(bio_err," -modulus        print the RSA key modulus\n");
242                 BIO_printf(bio_err," -check          verify key consistency\n");
243                 BIO_printf(bio_err," -pubin          expect a public key in input file\n");
244                 BIO_printf(bio_err," -pubout         output a public key\n");
245 #ifndef OPENSSL_NO_ENGINE
246                 BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
247 #endif
248                 goto end;
249                 }
250
251         ERR_load_crypto_strings();
252
253 #ifndef OPENSSL_NO_ENGINE
254         e = setup_engine(bio_err, engine, 0);
255 #endif
256
257         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
258                 BIO_printf(bio_err, "Error getting passwords\n");
259                 goto end;
260         }
261
262         if(check && pubin) {
263                 BIO_printf(bio_err, "Only private keys can be checked\n");
264                 goto end;
265         }
266
267         out=BIO_new(BIO_s_file());
268
269         {
270                 EVP_PKEY        *pkey;
271
272                 if (pubin)
273                         {
274                         int tmpformat=-1;
275                         if (pubin == 2)
276                                 {
277                                 if (informat == FORMAT_PEM)
278                                         tmpformat = FORMAT_PEMRSA;
279                                 else if (informat == FORMAT_ASN1)
280                                         tmpformat = FORMAT_ASN1RSA;
281                                 }
282                         else if (informat == FORMAT_NETSCAPE && sgckey)
283                                 tmpformat = FORMAT_IISSGC;
284                         else
285                                 tmpformat = informat;
286                                         
287                         pkey = load_pubkey(bio_err, infile, tmpformat, 1,
288                                 passin, e, "Public Key");
289                         }
290                 else
291                         pkey = load_key(bio_err, infile,
292                                 (informat == FORMAT_NETSCAPE && sgckey ?
293                                         FORMAT_IISSGC : informat), 1,
294                                 passin, e, "Private Key");
295
296                 if (pkey != NULL)
297                         rsa = EVP_PKEY_get1_RSA(pkey);
298                 EVP_PKEY_free(pkey);
299         }
300
301         if (rsa == NULL)
302                 {
303                 ERR_print_errors(bio_err);
304                 goto end;
305                 }
306
307         if (outfile == NULL)
308                 {
309                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
310 #ifdef OPENSSL_SYS_VMS
311                 {
312                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
313                 out = BIO_push(tmpbio, out);
314                 }
315 #endif
316                 }
317         else
318                 {
319                 if (BIO_write_filename(out,outfile) <= 0)
320                         {
321                         perror(outfile);
322                         goto end;
323                         }
324                 }
325
326         if (text) 
327                 if (!RSA_print(out,rsa,0))
328                         {
329                         perror(outfile);
330                         ERR_print_errors(bio_err);
331                         goto end;
332                         }
333
334         if (modulus)
335                 {
336                 BIO_printf(out,"Modulus=");
337                 BN_print(out,rsa->n);
338                 BIO_printf(out,"\n");
339                 }
340
341         if (check)
342                 {
343                 int r = RSA_check_key(rsa);
344
345                 if (r == 1)
346                         BIO_printf(out,"RSA key ok\n");
347                 else if (r == 0)
348                         {
349                         unsigned long err;
350
351                         while ((err = ERR_peek_error()) != 0 &&
352                                 ERR_GET_LIB(err) == ERR_LIB_RSA &&
353                                 ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
354                                 ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE)
355                                 {
356                                 BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(err));
357                                 ERR_get_error(); /* remove e from error stack */
358                                 }
359                         }
360                 
361                 if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */
362                         {
363                         ERR_print_errors(bio_err);
364                         goto end;
365                         }
366                 }
367                 
368         if (noout)
369                 {
370                 ret = 0;
371                 goto end;
372                 }
373         BIO_printf(bio_err,"writing RSA key\n");
374         if      (outformat == FORMAT_ASN1) {
375                 if(pubout || pubin) 
376                         {
377                         if (pubout == 2)
378                                 i=i2d_RSAPublicKey_bio(out,rsa);
379                         else
380                                 i=i2d_RSA_PUBKEY_bio(out,rsa);
381                         }
382                 else i=i2d_RSAPrivateKey_bio(out,rsa);
383         }
384 #ifndef OPENSSL_NO_RC4
385         else if (outformat == FORMAT_NETSCAPE)
386                 {
387                 unsigned char *p,*pp;
388                 int size;
389
390                 i=1;
391                 size=i2d_RSA_NET(rsa,NULL,NULL, sgckey);
392                 if ((p=(unsigned char *)OPENSSL_malloc(size)) == NULL)
393                         {
394                         BIO_printf(bio_err,"Memory allocation failure\n");
395                         goto end;
396                         }
397                 pp=p;
398                 i2d_RSA_NET(rsa,&p,NULL, sgckey);
399                 BIO_write(out,(char *)pp,size);
400                 OPENSSL_free(pp);
401                 }
402 #endif
403         else if (outformat == FORMAT_PEM) {
404                 if(pubout || pubin)
405                         {
406                         if (pubout == 2)
407                                 i=PEM_write_bio_RSAPublicKey(out,rsa);
408                         else
409                                 i=PEM_write_bio_RSA_PUBKEY(out,rsa);
410                         }
411                 else i=PEM_write_bio_RSAPrivateKey(out,rsa,
412                                                 enc,NULL,0,NULL,passout);
413 #if !defined(OPENSSL_NO_DSA) && !defined(OPENSSL_NO_RC4)
414         } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
415                 EVP_PKEY *pk;
416                 pk = EVP_PKEY_new();
417                 EVP_PKEY_set1_RSA(pk, rsa);
418                 if (outformat == FORMAT_PVK)
419                         i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
420                 else if (pubin || pubout)
421                         i = i2b_PublicKey_bio(out, pk);
422                 else
423                         i = i2b_PrivateKey_bio(out, pk);
424                 EVP_PKEY_free(pk);
425 #endif
426         } else  {
427                 BIO_printf(bio_err,"bad output format specified for outfile\n");
428                 goto end;
429                 }
430         if (i <= 0)
431                 {
432                 BIO_printf(bio_err,"unable to write key\n");
433                 ERR_print_errors(bio_err);
434                 }
435         else
436                 ret=0;
437 end:
438         if(out != NULL) BIO_free_all(out);
439         if(rsa != NULL) RSA_free(rsa);
440         if(passin) OPENSSL_free(passin);
441         if(passout) OPENSSL_free(passout);
442         apps_shutdown();
443         OPENSSL_EXIT(ret);
444         }
445 #else /* !OPENSSL_NO_RSA */
446
447 # if PEDANTIC
448 static void *dummy=&dummy;
449 # endif
450
451 #endif