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 #ifndef OPENSSL_NO_RSA
60 #include <stdio.h>
61 #include <string.h>
62 #include <sys/types.h>
63 #include <sys/stat.h>
64 #include "apps.h"
65 #include <openssl/bio.h>
66 #include <openssl/err.h>
67 #include <openssl/bn.h>
68 #include <openssl/rsa.h>
69 #include <openssl/evp.h>
70 #include <openssl/x509.h>
71 #include <openssl/pem.h>
72 #include <openssl/rand.h>
73
74 __RCSID("$MirOS: src/lib/libssl/src/apps/genrsa.c,v 1.7 2014/02/05 21:02:25 tg Exp $");
75
76 #define DEFBITS 512
77 #undef PROG
78 #define PROG genrsa_main
79
80 #ifndef MONOLITH
81 static
82 #endif
83 void MS_CALLBACK genrsa_cb(int p, int n, void *arg);
84
85 int MAIN(int, char **);
86
MAIN(int argc,char ** argv)87 int MAIN(int argc, char **argv)
88 {
89 #ifndef OPENSSL_NO_ENGINE
90 ENGINE *e = NULL;
91 #endif
92 int ret=1;
93 RSA *rsa=NULL;
94 int i,num=DEFBITS;
95 long l;
96 #ifdef OPENSSL_FIPS
97 int use_x931 = 0;
98 #endif
99 const EVP_CIPHER *enc=NULL;
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
108 apps_startup();
109
110 if (bio_err == NULL)
111 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
112 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
113
114 if (!load_config(bio_err, NULL))
115 goto err;
116 if ((out=BIO_new(BIO_s_file())) == NULL)
117 {
118 BIO_printf(bio_err,"unable to create BIO for output\n");
119 goto err;
120 }
121
122 argv++;
123 argc--;
124 for (;;)
125 {
126 if (argc <= 0) break;
127 if (strcmp(*argv,"-out") == 0)
128 {
129 if (--argc < 1) goto bad;
130 outfile= *(++argv);
131 }
132 else if (strcmp(*argv,"-3") == 0)
133 BIO_printf(bio_err,
134 "E: Using e=3 is broken, using 65537 instead!\n");
135 else if (strcmp(*argv,"-F4") == 0 || strcmp(*argv,"-f4") == 0)
136 /* nothing */;
137 #ifdef OPENSSL_FIPS
138 else if (strcmp(*argv,"-x931") == 0)
139 use_x931 = 1;
140 #endif
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_AES
164 else if (strcmp(*argv,"-aes128") == 0)
165 enc=EVP_aes_128_cbc();
166 else if (strcmp(*argv,"-aes192") == 0)
167 enc=EVP_aes_192_cbc();
168 else if (strcmp(*argv,"-aes256") == 0)
169 enc=EVP_aes_256_cbc();
170 #endif
171 else if (strcmp(*argv,"-passout") == 0)
172 {
173 if (--argc < 1) goto bad;
174 passargout= *(++argv);
175 }
176 else
177 break;
178 argv++;
179 argc--;
180 }
181 if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0)))
182 {
183 bad:
184 BIO_printf(bio_err,"usage: genrsa [args] [numbits]\n");
185 BIO_printf(bio_err," -des encrypt the generated key with DES in cbc mode\n");
186 BIO_printf(bio_err," -des3 encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
187 #ifndef OPENSSL_NO_IDEA
188 BIO_printf(bio_err," -idea encrypt the generated key with IDEA in cbc mode\n");
189 #endif
190 #ifndef OPENSSL_NO_AES
191 BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
192 BIO_printf(bio_err," encrypt PEM output with cbc aes\n");
193 #endif
194 BIO_printf(bio_err," -out file output the key to 'file\n");
195 BIO_printf(bio_err," -passout arg output file pass phrase source\n");
196 #ifndef OPENSSL_NO_ENGINE
197 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
198 #endif
199 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
200 BIO_printf(bio_err," load the file (or the files in the directory) into\n");
201 BIO_printf(bio_err," the random number generator\n");
202 goto err;
203 }
204
205 ERR_load_crypto_strings();
206
207 if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
208 BIO_printf(bio_err, "Error getting password\n");
209 goto err;
210 }
211
212 #ifndef OPENSSL_NO_ENGINE
213 e = setup_engine(bio_err, engine, 0);
214 #endif
215
216 if (outfile == NULL)
217 {
218 BIO_set_fp(out,stdout,BIO_NOCLOSE);
219 #ifdef OPENSSL_SYS_VMS
220 {
221 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
222 out = BIO_push(tmpbio, out);
223 }
224 #endif
225 }
226 else
227 {
228 if (BIO_write_filename(out,outfile) <= 0)
229 {
230 perror(outfile);
231 goto err;
232 }
233 }
234
235 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
236 && !RAND_status())
237 {
238 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
239 }
240 if (inrand != NULL)
241 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
242 app_RAND_load_files(inrand));
243
244 BIO_printf(bio_err,"Generating RSA private key, %d bit long modulus\n",
245 num);
246 #ifdef OPENSSL_FIPS
247 if (use_x931)
248 {
249 BIGNUM *pubexp;
250 pubexp = BN_new();
251 BN_set_word(pubexp, RSA_F4);
252 rsa = RSA_X931_generate_key(num, pubexp, genrsa_cb, bio_err);
253 BN_free(pubexp);
254 }
255 else
256 #endif
257 rsa=RSA_generate_key(num, RSA_F4, genrsa_cb, bio_err);
258
259 app_RAND_write_file(NULL, bio_err);
260
261 if (rsa == NULL)
262 {
263 BIO_printf(bio_err, "Key Generation error\n");
264
265 goto err;
266 }
267
268 /* We need to do the following for when the base number size is <
269 * long, esp windows 3.1 :-(. */
270 l=0L;
271 for (i=0; i<rsa->e->top; i++)
272 {
273 #ifndef SIXTY_FOUR_BIT
274 l<<=BN_BITS4;
275 l<<=BN_BITS4;
276 #endif
277 l+=rsa->e->d[i];
278 }
279 BIO_printf(bio_err,"e is %ld (0x%lX)\n",l,l);
280 {
281 PW_CB_DATA cb_data;
282 cb_data.password = passout;
283 cb_data.prompt_info = outfile;
284 if (!PEM_write_bio_RSAPrivateKey(out,rsa,enc,NULL,0,
285 (pem_password_cb *)password_callback,&cb_data))
286 goto err;
287 }
288
289 ret=0;
290 err:
291 if (rsa != NULL) RSA_free(rsa);
292 if (out != NULL) BIO_free_all(out);
293 if(passout) OPENSSL_free(passout);
294 if (ret != 0)
295 ERR_print_errors(bio_err);
296 apps_shutdown();
297 OPENSSL_EXIT(ret);
298 }
299
300 #ifndef MONOLITH
301 static
302 #endif
genrsa_cb(int p,int n,void * arg)303 void MS_CALLBACK genrsa_cb(int p, int n, void *arg)
304 {
305 char c='*';
306
307 if (p == 0) c='.';
308 if (p == 1) c='+';
309 if (p == 2) c='*';
310 if (p == 3) c='\n';
311 BIO_write((BIO *)arg,&c,1);
312 app_RAND_pushback((uint32_t)p, (uint32_t)n, (uint32_t)arg, 0);
313 (void)BIO_flush((BIO *)arg);
314 #ifdef LINT
315 p=n;
316 #endif
317 }
318 #else /* !OPENSSL_NO_RSA */
319
320 # if PEDANTIC
321 static void *dummy=&dummy;
322 # endif
323
324 #endif
325