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rsa.c
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1 /* apps/rsa.c */
2 /* Copyright (C) 1995-1998 Eric Young ([email protected])
3  * All rights reserved.
4  *
5  * This package is an SSL implementation written
6  * by Eric Young ([email protected]).
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 ([email protected]).
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 ([email protected])"
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 ([email protected])"
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 
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)
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 
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  {
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);
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 &&
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  {
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");
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