1 /* apps/genrsa.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 /* Until the key-gen callbacks are modified to use newer prototypes, we allow
61 * deprecated functions for openssl-internal code */
62 #ifdef OPENSSL_NO_DEPRECATED
63 #undef OPENSSL_NO_DEPRECATED
64 #endif
65
66 #ifndef OPENSSL_NO_RSA
67 #include <stdio.h>
68 #include <string.h>
69 #include <sys/types.h>
70 #include <sys/stat.h>
71 #include "apps.h"
72 #include <openssl/bio.h>
73 #include <openssl/err.h>
74 #include <openssl/bn.h>
75 #include <openssl/rsa.h>
76 #include <openssl/evp.h>
77 #include <openssl/x509.h>
78 #include <openssl/pem.h>
79 #include <openssl/rand.h>
80
81 #define DEFBITS 512
82 #undef PROG
83 #define PROG genrsa_main
84
85 static int MS_CALLBACK genrsa_cb(int p, int n, BN_GENCB *cb);
86
87 int MAIN(int, char **);
88
MAIN(int argc,char ** argv)89 int MAIN(int argc, char **argv)
90 {
91 BN_GENCB cb;
92 #ifndef OPENSSL_NO_ENGINE
93 ENGINE *e = NULL;
94 #endif
95 int ret=1;
96 int i,num=DEFBITS;
97 long l;
98 int use_x931 = 0;
99 const EVP_CIPHER *enc=NULL;
100 unsigned long f4=RSA_F4;
101 char *outfile=NULL;
102 char *passargout = NULL, *passout = NULL;
103 #ifndef OPENSSL_NO_ENGINE
104 char *engine=NULL;
105 #endif
106 char *inrand=NULL;
107 BIO *out=NULL;
108 BIGNUM *bn = BN_new();
109 RSA *rsa = RSA_new();
110
111 if(!bn || !rsa) goto err;
112
113 apps_startup();
114 BN_GENCB_set(&cb, genrsa_cb, bio_err);
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 err;
122 if ((out=BIO_new(BIO_s_file())) == NULL)
123 {
124 BIO_printf(bio_err,"unable to create BIO for output\n");
125 goto err;
126 }
127
128 argv++;
129 argc--;
130 for (;;)
131 {
132 if (argc <= 0) break;
133 if (strcmp(*argv,"-out") == 0)
134 {
135 if (--argc < 1) goto bad;
136 outfile= *(++argv);
137 }
138 else if (strcmp(*argv,"-3") == 0)
139 f4=3;
140 else if (strcmp(*argv,"-F4") == 0 || strcmp(*argv,"-f4") == 0)
141 f4=RSA_F4;
142 else if (strcmp(*argv,"-x931") == 0)
143 use_x931 = 1;
144 #ifndef OPENSSL_NO_ENGINE
145 else if (strcmp(*argv,"-engine") == 0)
146 {
147 if (--argc < 1) goto bad;
148 engine= *(++argv);
149 }
150 #endif
151 else if (strcmp(*argv,"-rand") == 0)
152 {
153 if (--argc < 1) goto bad;
154 inrand= *(++argv);
155 }
156 #ifndef OPENSSL_NO_DES
157 else if (strcmp(*argv,"-des") == 0)
158 enc=EVP_des_cbc();
159 else if (strcmp(*argv,"-des3") == 0)
160 enc=EVP_des_ede3_cbc();
161 #endif
162 #ifndef OPENSSL_NO_IDEA
163 else if (strcmp(*argv,"-idea") == 0)
164 enc=EVP_idea_cbc();
165 #endif
166 #ifndef OPENSSL_NO_SEED
167 else if (strcmp(*argv,"-seed") == 0)
168 enc=EVP_seed_cbc();
169 #endif
170 #ifndef OPENSSL_NO_AES
171 else if (strcmp(*argv,"-aes128") == 0)
172 enc=EVP_aes_128_cbc();
173 else if (strcmp(*argv,"-aes192") == 0)
174 enc=EVP_aes_192_cbc();
175 else if (strcmp(*argv,"-aes256") == 0)
176 enc=EVP_aes_256_cbc();
177 #endif
178 #ifndef OPENSSL_NO_CAMELLIA
179 else if (strcmp(*argv,"-camellia128") == 0)
180 enc=EVP_camellia_128_cbc();
181 else if (strcmp(*argv,"-camellia192") == 0)
182 enc=EVP_camellia_192_cbc();
183 else if (strcmp(*argv,"-camellia256") == 0)
184 enc=EVP_camellia_256_cbc();
185 #endif
186 else if (strcmp(*argv,"-passout") == 0)
187 {
188 if (--argc < 1) goto bad;
189 passargout= *(++argv);
190 }
191 else
192 break;
193 argv++;
194 argc--;
195 }
196 if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0)))
197 {
198 bad:
199 BIO_printf(bio_err,"usage: genrsa [args] [numbits]\n");
200 BIO_printf(bio_err," -des encrypt the generated key with DES in cbc mode\n");
201 BIO_printf(bio_err," -des3 encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
202 #ifndef OPENSSL_NO_IDEA
203 BIO_printf(bio_err," -idea encrypt the generated key with IDEA in cbc mode\n");
204 #endif
205 #ifndef OPENSSL_NO_SEED
206 BIO_printf(bio_err," -seed\n");
207 BIO_printf(bio_err," encrypt PEM output with cbc seed\n");
208 #endif
209 #ifndef OPENSSL_NO_AES
210 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
211 BIO_printf(bio_err," encrypt PEM output with cbc aes\n");
212 #endif
213 #ifndef OPENSSL_NO_CAMELLIA
214 BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
215 BIO_printf(bio_err," encrypt PEM output with cbc camellia\n");
216 #endif
217 BIO_printf(bio_err," -out file output the key to 'file\n");
218 BIO_printf(bio_err," -passout arg output file pass phrase source\n");
219 BIO_printf(bio_err," -f4 use F4 (0x10001) for the E value\n");
220 BIO_printf(bio_err," -3 use 3 for the E value\n");
221 #ifndef OPENSSL_NO_ENGINE
222 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
223 #endif
224 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
225 BIO_printf(bio_err," load the file (or the files in the directory) into\n");
226 BIO_printf(bio_err," the random number generator\n");
227 goto err;
228 }
229
230 ERR_load_crypto_strings();
231
232 if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
233 BIO_printf(bio_err, "Error getting password\n");
234 goto err;
235 }
236
237 #ifndef OPENSSL_NO_ENGINE
238 e = setup_engine(bio_err, engine, 0);
239 #endif
240
241 if (outfile == NULL)
242 {
243 BIO_set_fp(out,stdout,BIO_NOCLOSE);
244 #ifdef OPENSSL_SYS_VMS
245 {
246 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
247 out = BIO_push(tmpbio, out);
248 }
249 #endif
250 }
251 else
252 {
253 if (BIO_write_filename(out,outfile) <= 0)
254 {
255 perror(outfile);
256 goto err;
257 }
258 }
259
260 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
261 && !RAND_status())
262 {
263 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
264 }
265 if (inrand != NULL)
266 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
267 app_RAND_load_files(inrand));
268
269 BIO_printf(bio_err,"Generating RSA private key, %d bit long modulus\n",
270 num);
271
272 if (use_x931)
273 {
274 BIGNUM *pubexp;
275 pubexp = BN_new();
276 if (!BN_set_word(pubexp, f4))
277 goto err;
278 if (!RSA_X931_generate_key_ex(rsa, num, pubexp, &cb))
279 goto err;
280 BN_free(pubexp);
281 }
282 else if(!BN_set_word(bn, f4) || !RSA_generate_key_ex(rsa, num, bn, &cb))
283 goto err;
284
285 app_RAND_write_file(NULL, bio_err);
286
287 /* We need to do the following for when the base number size is <
288 * long, esp windows 3.1 :-(. */
289 l=0L;
290 for (i=0; i<rsa->e->top; i++)
291 {
292 #ifndef SIXTY_FOUR_BIT
293 l<<=BN_BITS4;
294 l<<=BN_BITS4;
295 #endif
296 l+=rsa->e->d[i];
297 }
298 BIO_printf(bio_err,"e is %ld (0x%lX)\n",l,l);
299 {
300 PW_CB_DATA cb_data;
301 cb_data.password = passout;
302 cb_data.prompt_info = outfile;
303 if (!PEM_write_bio_RSAPrivateKey(out,rsa,enc,NULL,0,
304 (pem_password_cb *)password_callback,&cb_data))
305 goto err;
306 }
307
308 ret=0;
309 err:
310 if (bn) BN_free(bn);
311 if (rsa) RSA_free(rsa);
312 if (out) BIO_free_all(out);
313 if(passout) OPENSSL_free(passout);
314 if (ret != 0)
315 ERR_print_errors(bio_err);
316 apps_shutdown();
317 OPENSSL_EXIT(ret);
318 }
319
genrsa_cb(int p,int n,BN_GENCB * cb)320 static int MS_CALLBACK genrsa_cb(int p, int n, BN_GENCB *cb)
321 {
322 char c='*';
323
324 if (p == 0) c='.';
325 if (p == 1) c='+';
326 if (p == 2) c='*';
327 if (p == 3) c='\n';
328 BIO_write(cb->arg,&c,1);
329 (void)BIO_flush(cb->arg);
330 #ifdef LINT
331 p=n;
332 #endif
333 return 1;
334 }
335 #else /* !OPENSSL_NO_RSA */
336
337 # if PEDANTIC
338 static void *dummy=&dummy;
339 # endif
340
341 #endif
342