Add missing #ifndefs that caused missing symbols when building libssl
[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 #ifndef NO_RSA
60 #include <stdio.h>
61 #include <stdlib.h>
62 #include <string.h>
63 #include <time.h>
64 #include "apps.h"
65 #include <openssl/bio.h>
66 #include <openssl/err.h>
67 #include <openssl/rsa.h>
68 #include <openssl/evp.h>
69 #include <openssl/x509.h>
70 #include <openssl/pem.h>
71
72 #undef PROG
73 #define PROG    rsa_main
74
75 /* -inform arg  - input format - default PEM (one of DER, NET or PEM)
76  * -outform arg - output format - default PEM
77  * -in arg      - input file - default stdin
78  * -out arg     - output file - default stdout
79  * -des         - encrypt output if PEM format with DES in cbc mode
80  * -des3        - encrypt output if PEM format
81  * -idea        - encrypt output if PEM format
82  * -text        - print a text version
83  * -modulus     - print the RSA key modulus
84  * -check       - verify key consistency
85  * -pubin       - Expect a public key in input file.
86  * -pubout      - Output a public key.
87  */
88
89 int MAIN(int argc, char **argv)
90         {
91         int ret=1;
92         RSA *rsa=NULL;
93         int i,badops=0;
94         const EVP_CIPHER *enc=NULL;
95         BIO *in=NULL,*out=NULL;
96         int informat,outformat,text=0,check=0,noout=0;
97         int pubin = 0, pubout = 0;
98         char *infile,*outfile,*prog;
99         char *passin = NULL, *passout = NULL;
100         int modulus=0;
101
102         apps_startup();
103
104         if (bio_err == NULL)
105                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
106                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
107
108         infile=NULL;
109         outfile=NULL;
110         informat=FORMAT_PEM;
111         outformat=FORMAT_PEM;
112
113         prog=argv[0];
114         argc--;
115         argv++;
116         while (argc >= 1)
117                 {
118                 if      (strcmp(*argv,"-inform") == 0)
119                         {
120                         if (--argc < 1) goto bad;
121                         informat=str2fmt(*(++argv));
122                         }
123                 else if (strcmp(*argv,"-outform") == 0)
124                         {
125                         if (--argc < 1) goto bad;
126                         outformat=str2fmt(*(++argv));
127                         }
128                 else if (strcmp(*argv,"-in") == 0)
129                         {
130                         if (--argc < 1) goto bad;
131                         infile= *(++argv);
132                         }
133                 else if (strcmp(*argv,"-out") == 0)
134                         {
135                         if (--argc < 1) goto bad;
136                         outfile= *(++argv);
137                         }
138                 else if (strcmp(*argv,"-passin") == 0)
139                         {
140                         if (--argc < 1) goto bad;
141                         passin= *(++argv);
142                         }
143                 else if (strcmp(*argv,"-envpassin") == 0)
144                         {
145                         if (--argc < 1) goto bad;
146                                 if(!(passin= getenv(*(++argv))))
147                                 {
148                                 BIO_printf(bio_err,
149                                  "Can't read environment variable %s\n",
150                                                                 *argv);
151                                 badops = 1;
152                                 }
153                         }
154                 else if (strcmp(*argv,"-envpassout") == 0)
155                         {
156                         if (--argc < 1) goto bad;
157                                 if(!(passout= getenv(*(++argv))))
158                                 {
159                                 BIO_printf(bio_err,
160                                  "Can't read environment variable %s\n",
161                                                                 *argv);
162                                 badops = 1;
163                                 }
164                         }
165                 else if (strcmp(*argv,"-passout") == 0)
166                         {
167                         if (--argc < 1) goto bad;
168                         passout= *(++argv);
169                         }
170                 else if (strcmp(*argv,"-pubin") == 0)
171                         pubin=1;
172                 else if (strcmp(*argv,"-pubout") == 0)
173                         pubout=1;
174                 else if (strcmp(*argv,"-noout") == 0)
175                         noout=1;
176                 else if (strcmp(*argv,"-text") == 0)
177                         text=1;
178                 else if (strcmp(*argv,"-modulus") == 0)
179                         modulus=1;
180                 else if (strcmp(*argv,"-check") == 0)
181                         check=1;
182                 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
183                         {
184                         BIO_printf(bio_err,"unknown option %s\n",*argv);
185                         badops=1;
186                         break;
187                         }
188                 argc--;
189                 argv++;
190                 }
191
192         if (badops)
193                 {
194 bad:
195                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
196                 BIO_printf(bio_err,"where options are\n");
197                 BIO_printf(bio_err," -inform arg     input format - one of DER NET PEM\n");
198                 BIO_printf(bio_err," -outform arg    output format - one of DER NET PEM\n");
199                 BIO_printf(bio_err," -in arg         input file\n");
200                 BIO_printf(bio_err," -passin arg     input file pass phrase\n");
201                 BIO_printf(bio_err," -envpassin arg  environment variable containing input file pass phrase\n");
202                 BIO_printf(bio_err," -in arg         input file\n");
203                 BIO_printf(bio_err," -out arg        output file\n");
204                 BIO_printf(bio_err," -passout arg    input file pass phrase\n");
205                 BIO_printf(bio_err," -envpassout arg environment variable containing input file pass phrase\n");
206                 BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");
207                 BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
208 #ifndef NO_IDEA
209                 BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");
210 #endif
211                 BIO_printf(bio_err," -text           print the key in text\n");
212                 BIO_printf(bio_err," -noout          don't print key out\n");
213                 BIO_printf(bio_err," -modulus        print the RSA key modulus\n");
214                 BIO_printf(bio_err," -check          verify key consistency\n");
215                 BIO_printf(bio_err," -pubin          expect a public key in input file\n");
216                 BIO_printf(bio_err," -pubout         output a public key\n");
217                 goto end;
218                 }
219
220         ERR_load_crypto_strings();
221
222         if(check && pubin) {
223                 BIO_printf(bio_err, "Only private keys can be checked\n");
224                 goto end;
225         }
226
227         in=BIO_new(BIO_s_file());
228         out=BIO_new(BIO_s_file());
229         if ((in == NULL) || (out == NULL))
230                 {
231                 ERR_print_errors(bio_err);
232                 goto end;
233                 }
234
235         if (infile == NULL)
236                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
237         else
238                 {
239                 if (BIO_read_filename(in,infile) <= 0)
240                         {
241                         perror(infile);
242                         goto end;
243                         }
244                 }
245
246         BIO_printf(bio_err,"read RSA key\n");
247         if      (informat == FORMAT_ASN1) {
248                 if (pubin) rsa=d2i_RSA_PUBKEY_bio(in,NULL);
249                 else rsa=d2i_RSAPrivateKey_bio(in,NULL);
250         }
251 #ifndef NO_RC4
252         else if (informat == FORMAT_NETSCAPE)
253                 {
254                 BUF_MEM *buf=NULL;
255                 unsigned char *p;
256                 int size=0;
257
258                 buf=BUF_MEM_new();
259                 for (;;)
260                         {
261                         if ((buf == NULL) || (!BUF_MEM_grow(buf,size+1024*10)))
262                                 goto end;
263                         i=BIO_read(in,&(buf->data[size]),1024*10);
264                         size+=i;
265                         if (i == 0) break;
266                         if (i < 0)
267                                 {
268                                 perror("reading private key");
269                                 BUF_MEM_free(buf);
270                                 goto end;
271                                 }
272                         }
273                 p=(unsigned char *)buf->data;
274                 rsa=(RSA *)d2i_Netscape_RSA(NULL,&p,(long)size,NULL);
275                 BUF_MEM_free(buf);
276                 }
277 #endif
278         else if (informat == FORMAT_PEM) {
279                 if(pubin) rsa=PEM_read_bio_RSA_PUBKEY(in,NULL,NULL,NULL);
280                 else rsa=PEM_read_bio_RSAPrivateKey(in,NULL, PEM_cb,passin);
281         }
282         else
283                 {
284                 BIO_printf(bio_err,"bad input format specified for key\n");
285                 goto end;
286                 }
287         if (rsa == NULL)
288                 {
289                 BIO_printf(bio_err,"unable to load key\n");
290                 ERR_print_errors(bio_err);
291                 goto end;
292                 }
293
294         if (outfile == NULL)
295                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
296         else
297                 {
298                 if (BIO_write_filename(out,outfile) <= 0)
299                         {
300                         perror(outfile);
301                         goto end;
302                         }
303                 }
304
305         if (text) 
306                 if (!RSA_print(out,rsa,0))
307                         {
308                         perror(outfile);
309                         ERR_print_errors(bio_err);
310                         goto end;
311                         }
312
313         if (modulus)
314                 {
315                 BIO_printf(out,"Modulus=");
316                 BN_print(out,rsa->n);
317                 BIO_printf(out,"\n");
318                 }
319
320         if (check)
321                 {
322                 int r = RSA_check_key(rsa);
323
324                 if (r == 1)
325                         BIO_printf(out,"RSA key ok\n");
326                 else if (r == 0)
327                         {
328                         long e;
329
330                         while ((e = ERR_peek_error()) != 0 &&
331                                 ERR_GET_LIB(e) == ERR_LIB_RSA &&
332                                 ERR_GET_FUNC(e) == RSA_F_RSA_CHECK_KEY &&
333                                 ERR_GET_REASON(e) != ERR_R_MALLOC_FAILURE)
334                                 {
335                                 BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(e));
336                                 ERR_get_error(); /* remove e from error stack */
337                                 }
338                         }
339                 
340                 if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */
341                         {
342                         ERR_print_errors(bio_err);
343                         goto end;
344                         }
345                 }
346                 
347         if (noout)
348                 {
349                 ret = 0;
350                 goto end;
351                 }
352         BIO_printf(bio_err,"writing RSA key\n");
353         if      (outformat == FORMAT_ASN1) {
354                 if(pubout || pubin) i=i2d_RSA_PUBKEY_bio(out,rsa);
355                 else i=i2d_RSAPrivateKey_bio(out,rsa);
356         }
357 #ifndef NO_RC4
358         else if (outformat == FORMAT_NETSCAPE)
359                 {
360                 unsigned char *p,*pp;
361                 int size;
362
363                 i=1;
364                 size=i2d_Netscape_RSA(rsa,NULL,NULL);
365                 if ((p=(unsigned char *)Malloc(size)) == NULL)
366                         {
367                         BIO_printf(bio_err,"Malloc failure\n");
368                         goto end;
369                         }
370                 pp=p;
371                 i2d_Netscape_RSA(rsa,&p,NULL);
372                 BIO_write(out,(char *)pp,size);
373                 Free(pp);
374                 }
375 #endif
376         else if (outformat == FORMAT_PEM) {
377                 if(pubout || pubin)
378                     i=PEM_write_bio_RSA_PUBKEY(out,rsa);
379                 else i=PEM_write_bio_RSAPrivateKey(out,rsa,
380                                                 enc,NULL,0,PEM_cb,passout);
381         } else  {
382                 BIO_printf(bio_err,"bad output format specified for outfile\n");
383                 goto end;
384                 }
385         if (!i)
386                 {
387                 BIO_printf(bio_err,"unable to write key\n");
388                 ERR_print_errors(bio_err);
389                 }
390         else
391                 ret=0;
392 end:
393         if (in != NULL) BIO_free(in);
394         if (out != NULL) BIO_free(out);
395         if (rsa != NULL) RSA_free(rsa);
396         EXIT(ret);
397         }
398 #else /* !NO_RSA */
399
400 # if PEDANTIC
401 static void *dummy=&dummy;
402 # endif
403
404 #endif