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 const EVP_CIPHER *enc=NULL;
99 unsigned long f4=RSA_F4;
100 char *outfile=NULL;
101 char *passargout = NULL, *passout = NULL;
102 #ifndef OPENSSL_NO_ENGINE
103 char *engine=NULL;
104 #endif
105 char *inrand=NULL;
106 BIO *out=NULL;
107 BIGNUM *bn = BN_new();
108 RSA *rsa = RSA_new();
109
110 if(!bn || !rsa) goto err;
111
112 apps_startup();
113 BN_GENCB_set(&cb, genrsa_cb, bio_err);
114
115 if (bio_err == NULL)
116 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
117 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
118
119 if (!load_config(bio_err, NULL))
120 goto err;
121 if ((out=BIO_new(BIO_s_file())) == NULL)
122 {
123 BIO_printf(bio_err,"unable to create BIO for output\n");
124 goto err;
125 }
126
127 argv++;
128 argc--;
129 for (;;)
130 {
131 if (argc <= 0) break;
132 if (strcmp(*argv,"-out") == 0)
133 {
134 if (--argc < 1) goto bad;
135 outfile= *(++argv);
136 }
137 else if (strcmp(*argv,"-3") == 0)
138 f4=3;
139 else if (strcmp(*argv,"-F4") == 0 || strcmp(*argv,"-f4") == 0)
140 f4=RSA_F4;
141 #ifndef OPENSSL_NO_ENGINE
142 else if (strcmp(*argv,"-engine") == 0)
143 {
144 if (--argc < 1) goto bad;
145 engine= *(++argv);
146 }
147 #endif
148 else if (strcmp(*argv,"-rand") == 0)
149 {
150 if (--argc < 1) goto bad;
151 inrand= *(++argv);
152 }
153 #ifndef OPENSSL_NO_DES
154 else if (strcmp(*argv,"-des") == 0)
155 enc=EVP_des_cbc();
156 else if (strcmp(*argv,"-des3") == 0)
157 enc=EVP_des_ede3_cbc();
158 #endif
159 #ifndef OPENSSL_NO_IDEA
160 else if (strcmp(*argv,"-idea") == 0)
161 enc=EVP_idea_cbc();
162 #endif
163 #ifndef OPENSSL_NO_SEED
164 else if (strcmp(*argv,"-seed") == 0)
165 enc=EVP_seed_cbc();
166 #endif
167 #ifndef OPENSSL_NO_AES
168 else if (strcmp(*argv,"-aes128") == 0)
169 enc=EVP_aes_128_cbc();
170 else if (strcmp(*argv,"-aes192") == 0)
171 enc=EVP_aes_192_cbc();
172 else if (strcmp(*argv,"-aes256") == 0)
173 enc=EVP_aes_256_cbc();
174 #endif
175 #ifndef OPENSSL_NO_CAMELLIA
176 else if (strcmp(*argv,"-camellia128") == 0)
177 enc=EVP_camellia_128_cbc();
178 else if (strcmp(*argv,"-camellia192") == 0)
179 enc=EVP_camellia_192_cbc();
180 else if (strcmp(*argv,"-camellia256") == 0)
181 enc=EVP_camellia_256_cbc();
182 #endif
183 else if (strcmp(*argv,"-passout") == 0)
184 {
185 if (--argc < 1) goto bad;
186 passargout= *(++argv);
187 }
188 else
189 break;
190 argv++;
191 argc--;
192 }
193 if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0)))
194 {
195 bad:
196 BIO_printf(bio_err,"usage: genrsa [args] [numbits]\n");
197 BIO_printf(bio_err," -des encrypt the generated key with DES in cbc mode\n");
198 BIO_printf(bio_err," -des3 encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
199 #ifndef OPENSSL_NO_IDEA
200 BIO_printf(bio_err," -idea encrypt the generated key with IDEA in cbc mode\n");
201 #endif
202 #ifndef OPENSSL_NO_SEED
203 BIO_printf(bio_err," -seed\n");
204 BIO_printf(bio_err," encrypt PEM output with cbc seed\n");
205 #endif
206 #ifndef OPENSSL_NO_AES
207 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
208 BIO_printf(bio_err," encrypt PEM output with cbc aes\n");
209 #endif
210 #ifndef OPENSSL_NO_CAMELLIA
211 BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
212 BIO_printf(bio_err," encrypt PEM output with cbc camellia\n");
213 #endif
214 BIO_printf(bio_err," -out file output the key to 'file\n");
215 BIO_printf(bio_err," -passout arg output file pass phrase source\n");
216 BIO_printf(bio_err," -f4 use F4 (0x10001) for the E value\n");
217 BIO_printf(bio_err," -3 use 3 for the E value\n");
218 #ifndef OPENSSL_NO_ENGINE
219 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
220 #endif
221 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
222 BIO_printf(bio_err," load the file (or the files in the directory) into\n");
223 BIO_printf(bio_err," the random number generator\n");
224 goto err;
225 }
226
227 ERR_load_crypto_strings();
228
229 if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
230 BIO_printf(bio_err, "Error getting password\n");
231 goto err;
232 }
233
234 #ifndef OPENSSL_NO_ENGINE
235 e = setup_engine(bio_err, engine, 0);
236 #endif
237
238 if (outfile == NULL)
239 {
240 BIO_set_fp(out,stdout,BIO_NOCLOSE);
241 #ifdef OPENSSL_SYS_VMS
242 {
243 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
244 out = BIO_push(tmpbio, out);
245 }
246 #endif
247 }
248 else
249 {
250 if (BIO_write_filename(out,outfile) <= 0)
251 {
252 perror(outfile);
253 goto err;
254 }
255 }
256
257 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
258 && !RAND_status())
259 {
260 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
261 }
262 if (inrand != NULL)
263 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
264 app_RAND_load_files(inrand));
265
266 BIO_printf(bio_err,"Generating RSA private key, %d bit long modulus\n",
267 num);
268
269 if(!BN_set_word(bn, f4) || !RSA_generate_key_ex(rsa, num, bn, &cb))
270 goto err;
271
272 app_RAND_write_file(NULL, bio_err);
273
274 /* We need to do the following for when the base number size is <
275 * long, esp windows 3.1 :-(. */
276 l=0L;
277 for (i=0; i<rsa->e->top; i++)
278 {
279 #ifndef SIXTY_FOUR_BIT
280 l<<=BN_BITS4;
281 l<<=BN_BITS4;
282 #endif
283 l+=rsa->e->d[i];
284 }
285 BIO_printf(bio_err,"e is %ld (0x%lX)\n",l,l);
286 {
287 PW_CB_DATA cb_data;
288 cb_data.password = passout;
289 cb_data.prompt_info = outfile;
290 if (!PEM_write_bio_RSAPrivateKey(out,rsa,enc,NULL,0,
291 (pem_password_cb *)password_callback,&cb_data))
292 goto err;
293 }
294
295 ret=0;
296 err:
297 if (bn) BN_free(bn);
298 if (rsa) RSA_free(rsa);
299 if (out) BIO_free_all(out);
300 if(passout) OPENSSL_free(passout);
301 if (ret != 0)
302 ERR_print_errors(bio_err);
303 apps_shutdown();
304 OPENSSL_EXIT(ret);
305 }
306
genrsa_cb(int p,int n,BN_GENCB * cb)307 static int MS_CALLBACK genrsa_cb(int p, int n, BN_GENCB *cb)
308 {
309 char c='*';
310
311 if (p == 0) c='.';
312 if (p == 1) c='+';
313 if (p == 2) c='*';
314 if (p == 3) c='\n';
315 BIO_write(cb->arg,&c,1);
316 (void)BIO_flush(cb->arg);
317 #ifdef LINT
318 p=n;
319 #endif
320 return 1;
321 }
322 #else /* !OPENSSL_NO_RSA */
323
324 # if PEDANTIC
325 static void *dummy=&dummy;
326 # endif
327
328 #endif
329