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 * -aes128 - encrypt output if PEM format
85 * -aes192 - encrypt output if PEM format
86 * -aes256 - encrypt output if PEM format
87 * -text - print a text version
88 * -modulus - print the RSA key modulus
89 * -check - verify key consistency
90 * -pubin - Expect a public key in input file.
91 * -pubout - Output a public key.
92 */
93
94 int MAIN(int, char **);
95
MAIN(int argc,char ** argv)96 int MAIN(int argc, char **argv)
97 {
98 ENGINE *e = NULL;
99 int ret=1;
100 RSA *rsa=NULL;
101 int i,badops=0, sgckey=0;
102 const EVP_CIPHER *enc=NULL;
103 BIO *out=NULL;
104 int informat,outformat,text=0,check=0,noout=0;
105 int pubin = 0, pubout = 0;
106 char *infile,*outfile,*prog;
107 char *passargin = NULL, *passargout = NULL;
108 char *passin = NULL, *passout = NULL;
109 #ifndef OPENSSL_NO_ENGINE
110 char *engine=NULL;
111 #endif
112 int modulus=0;
113
114 apps_startup();
115
116 if (bio_err == NULL)
117 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
118 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
119
120 if (!load_config(bio_err, NULL))
121 goto end;
122
123 infile=NULL;
124 outfile=NULL;
125 informat=FORMAT_PEM;
126 outformat=FORMAT_PEM;
127
128 prog=argv[0];
129 argc--;
130 argv++;
131 while (argc >= 1)
132 {
133 if (strcmp(*argv,"-inform") == 0)
134 {
135 if (--argc < 1) goto bad;
136 informat=str2fmt(*(++argv));
137 }
138 else if (strcmp(*argv,"-outform") == 0)
139 {
140 if (--argc < 1) goto bad;
141 outformat=str2fmt(*(++argv));
142 }
143 else if (strcmp(*argv,"-in") == 0)
144 {
145 if (--argc < 1) goto bad;
146 infile= *(++argv);
147 }
148 else if (strcmp(*argv,"-out") == 0)
149 {
150 if (--argc < 1) goto bad;
151 outfile= *(++argv);
152 }
153 else if (strcmp(*argv,"-passin") == 0)
154 {
155 if (--argc < 1) goto bad;
156 passargin= *(++argv);
157 }
158 else if (strcmp(*argv,"-passout") == 0)
159 {
160 if (--argc < 1) goto bad;
161 passargout= *(++argv);
162 }
163 #ifndef OPENSSL_NO_ENGINE
164 else if (strcmp(*argv,"-engine") == 0)
165 {
166 if (--argc < 1) goto bad;
167 engine= *(++argv);
168 }
169 #endif
170 else if (strcmp(*argv,"-sgckey") == 0)
171 sgckey=1;
172 else if (strcmp(*argv,"-pubin") == 0)
173 pubin=1;
174 else if (strcmp(*argv,"-pubout") == 0)
175 pubout=1;
176 else if (strcmp(*argv,"-noout") == 0)
177 noout=1;
178 else if (strcmp(*argv,"-text") == 0)
179 text=1;
180 else if (strcmp(*argv,"-modulus") == 0)
181 modulus=1;
182 else if (strcmp(*argv,"-check") == 0)
183 check=1;
184 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
185 {
186 BIO_printf(bio_err,"unknown option %s\n",*argv);
187 badops=1;
188 break;
189 }
190 argc--;
191 argv++;
192 }
193
194 if (badops)
195 {
196 bad:
197 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
198 BIO_printf(bio_err,"where options are\n");
199 BIO_printf(bio_err," -inform arg input format - one of DER NET PEM\n");
200 BIO_printf(bio_err," -outform arg output format - one of DER NET PEM\n");
201 BIO_printf(bio_err," -in arg input file\n");
202 BIO_printf(bio_err," -sgckey Use IIS SGC key format\n");
203 BIO_printf(bio_err," -passin arg input file pass phrase source\n");
204 BIO_printf(bio_err," -out arg output file\n");
205 BIO_printf(bio_err," -passout arg output file pass phrase source\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 OPENSSL_NO_IDEA
209 BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n");
210 #endif
211 #ifndef OPENSSL_NO_AES
212 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
213 BIO_printf(bio_err," encrypt PEM output with cbc aes\n");
214 #endif
215 BIO_printf(bio_err," -text print the key in text\n");
216 BIO_printf(bio_err," -noout don't print key out\n");
217 BIO_printf(bio_err," -modulus print the RSA key modulus\n");
218 BIO_printf(bio_err," -check verify key consistency\n");
219 BIO_printf(bio_err," -pubin expect a public key in input file\n");
220 BIO_printf(bio_err," -pubout output a public key\n");
221 #ifndef OPENSSL_NO_ENGINE
222 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
223 #endif
224 goto end;
225 }
226
227 ERR_load_crypto_strings();
228
229 #ifndef OPENSSL_NO_ENGINE
230 e = setup_engine(bio_err, engine, 0);
231 #endif
232
233 if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
234 BIO_printf(bio_err, "Error getting passwords\n");
235 goto end;
236 }
237
238 if(check && pubin) {
239 BIO_printf(bio_err, "Only private keys can be checked\n");
240 goto end;
241 }
242
243 out=BIO_new(BIO_s_file());
244
245 {
246 EVP_PKEY *pkey;
247
248 if (pubin)
249 pkey = load_pubkey(bio_err, infile,
250 (informat == FORMAT_NETSCAPE && sgckey ?
251 FORMAT_IISSGC : informat), 1,
252 passin, e, "Public Key");
253 else
254 pkey = load_key(bio_err, infile,
255 (informat == FORMAT_NETSCAPE && sgckey ?
256 FORMAT_IISSGC : informat), 1,
257 passin, e, "Private Key");
258
259 if (pkey != NULL)
260 rsa = pkey == NULL ? NULL : EVP_PKEY_get1_RSA(pkey);
261 EVP_PKEY_free(pkey);
262 }
263
264 if (rsa == NULL)
265 {
266 ERR_print_errors(bio_err);
267 goto end;
268 }
269
270 if (outfile == NULL)
271 {
272 BIO_set_fp(out,stdout,BIO_NOCLOSE);
273 #ifdef OPENSSL_SYS_VMS
274 {
275 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
276 out = BIO_push(tmpbio, out);
277 }
278 #endif
279 }
280 else
281 {
282 if (BIO_write_filename(out,outfile) <= 0)
283 {
284 perror(outfile);
285 goto end;
286 }
287 }
288
289 if (text)
290 if (!RSA_print(out,rsa,0))
291 {
292 perror(outfile);
293 ERR_print_errors(bio_err);
294 goto end;
295 }
296
297 if (modulus)
298 {
299 BIO_printf(out,"Modulus=");
300 BN_print(out,rsa->n);
301 BIO_printf(out,"\n");
302 }
303
304 if (check)
305 {
306 int r = RSA_check_key(rsa);
307
308 if (r == 1)
309 BIO_printf(out,"RSA key ok\n");
310 else if (r == 0)
311 {
312 unsigned long err;
313
314 while ((err = ERR_peek_error()) != 0 &&
315 ERR_GET_LIB(err) == ERR_LIB_RSA &&
316 ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&
317 ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE)
318 {
319 BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(err));
320 ERR_get_error(); /* remove e from error stack */
321 }
322 }
323
324 if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */
325 {
326 ERR_print_errors(bio_err);
327 goto end;
328 }
329 }
330
331 if (noout)
332 {
333 ret = 0;
334 goto end;
335 }
336 BIO_printf(bio_err,"writing RSA key\n");
337 if (outformat == FORMAT_ASN1) {
338 if(pubout || pubin) i=i2d_RSA_PUBKEY_bio(out,rsa);
339 else i=i2d_RSAPrivateKey_bio(out,rsa);
340 }
341 #ifndef OPENSSL_NO_RC4
342 else if (outformat == FORMAT_NETSCAPE)
343 {
344 unsigned char *p,*pp;
345 int size;
346
347 i=1;
348 size=i2d_RSA_NET(rsa,NULL,NULL, sgckey);
349 if ((p=(unsigned char *)OPENSSL_malloc(size)) == NULL)
350 {
351 BIO_printf(bio_err,"Memory allocation failure\n");
352 goto end;
353 }
354 pp=p;
355 i2d_RSA_NET(rsa,&p,NULL, sgckey);
356 BIO_write(out,(char *)pp,size);
357 OPENSSL_free(pp);
358 }
359 #endif
360 else if (outformat == FORMAT_PEM) {
361 if(pubout || pubin)
362 i=PEM_write_bio_RSA_PUBKEY(out,rsa);
363 else i=PEM_write_bio_RSAPrivateKey(out,rsa,
364 enc,NULL,0,NULL,passout);
365 } else {
366 BIO_printf(bio_err,"bad output format specified for outfile\n");
367 goto end;
368 }
369 if (!i)
370 {
371 BIO_printf(bio_err,"unable to write key\n");
372 ERR_print_errors(bio_err);
373 }
374 else
375 ret=0;
376 end:
377 if(out != NULL) BIO_free_all(out);
378 if(rsa != NULL) RSA_free(rsa);
379 if(passin) OPENSSL_free(passin);
380 if(passout) OPENSSL_free(passout);
381 apps_shutdown();
382 OPENSSL_EXIT(ret);
383 }
384 #else /* !OPENSSL_NO_RSA */
385
386 # if PEDANTIC
387 static void *dummy=&dummy;
388 # endif
389
390 #endif
391