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#define DEFBITS	512
75#undef PROG
76#define PROG genrsa_main
77
78static void MS_CALLBACK genrsa_cb(int p, int n, void *arg);
79
80int MAIN(int, char **);
81
82int MAIN(int argc, char **argv)
83	{
84#ifndef OPENSSL_NO_ENGINE
85	ENGINE *e = NULL;
86#endif
87	int ret=1;
88	RSA *rsa=NULL;
89	int i,num=DEFBITS;
90	long l;
91	const EVP_CIPHER *enc=NULL;
92	unsigned long f4=RSA_F4;
93	char *outfile=NULL;
94	char *passargout = NULL, *passout = NULL;
95#ifndef OPENSSL_NO_ENGINE
96	char *engine=NULL;
97#endif
98	char *inrand=NULL;
99	BIO *out=NULL;
100
101	apps_startup();
102
103	if (bio_err == NULL)
104		if ((bio_err=BIO_new(BIO_s_file())) != NULL)
105			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
106
107	if (!load_config(bio_err, NULL))
108		goto err;
109	if ((out=BIO_new(BIO_s_file())) == NULL)
110		{
111		BIO_printf(bio_err,"unable to create BIO for output\n");
112		goto err;
113		}
114
115	argv++;
116	argc--;
117	for (;;)
118		{
119		if (argc <= 0) break;
120		if (strcmp(*argv,"-out") == 0)
121			{
122			if (--argc < 1) goto bad;
123			outfile= *(++argv);
124			}
125		else if (strcmp(*argv,"-3") == 0)
126			f4=3;
127		else if (strcmp(*argv,"-F4") == 0 || strcmp(*argv,"-f4") == 0)
128			f4=RSA_F4;
129#ifndef OPENSSL_NO_ENGINE
130		else if (strcmp(*argv,"-engine") == 0)
131			{
132			if (--argc < 1) goto bad;
133			engine= *(++argv);
134			}
135#endif
136		else if (strcmp(*argv,"-rand") == 0)
137			{
138			if (--argc < 1) goto bad;
139			inrand= *(++argv);
140			}
141#ifndef OPENSSL_NO_DES
142		else if (strcmp(*argv,"-des") == 0)
143			enc=EVP_des_cbc();
144		else if (strcmp(*argv,"-des3") == 0)
145			enc=EVP_des_ede3_cbc();
146#endif
147#ifndef OPENSSL_NO_IDEA
148		else if (strcmp(*argv,"-idea") == 0)
149			enc=EVP_idea_cbc();
150#endif
151#ifndef OPENSSL_NO_AES
152		else if (strcmp(*argv,"-aes128") == 0)
153			enc=EVP_aes_128_cbc();
154		else if (strcmp(*argv,"-aes192") == 0)
155			enc=EVP_aes_192_cbc();
156		else if (strcmp(*argv,"-aes256") == 0)
157			enc=EVP_aes_256_cbc();
158#endif
159		else if (strcmp(*argv,"-passout") == 0)
160			{
161			if (--argc < 1) goto bad;
162			passargout= *(++argv);
163			}
164		else
165			break;
166		argv++;
167		argc--;
168		}
169	if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0)))
170		{
171bad:
172		BIO_printf(bio_err,"usage: genrsa [args] [numbits]\n");
173		BIO_printf(bio_err," -des            encrypt the generated key with DES in cbc mode\n");
174		BIO_printf(bio_err," -des3           encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
175#ifndef OPENSSL_NO_IDEA
176		BIO_printf(bio_err," -idea           encrypt the generated key with IDEA in cbc mode\n");
177#endif
178#ifndef OPENSSL_NO_AES
179		BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
180		BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
181#endif
182		BIO_printf(bio_err," -out file       output the key to 'file\n");
183		BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
184		BIO_printf(bio_err," -f4             use F4 (0x10001) for the E value\n");
185		BIO_printf(bio_err," -3              use 3 for the E value\n");
186#ifndef OPENSSL_NO_ENGINE
187		BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
188#endif
189		BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
190		BIO_printf(bio_err,"                 load the file (or the files in the directory) into\n");
191		BIO_printf(bio_err,"                 the random number generator\n");
192		goto err;
193		}
194
195	ERR_load_crypto_strings();
196
197	if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
198		BIO_printf(bio_err, "Error getting password\n");
199		goto err;
200	}
201
202#ifndef OPENSSL_NO_ENGINE
203        e = setup_engine(bio_err, engine, 0);
204#endif
205
206	if (outfile == NULL)
207		{
208		BIO_set_fp(out,stdout,BIO_NOCLOSE);
209#ifdef OPENSSL_SYS_VMS
210		{
211		BIO *tmpbio = BIO_new(BIO_f_linebuffer());
212		out = BIO_push(tmpbio, out);
213		}
214#endif
215		}
216	else
217		{
218		if (BIO_write_filename(out,outfile) <= 0)
219			{
220			perror(outfile);
221			goto err;
222			}
223		}
224
225	if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
226		&& !RAND_status())
227		{
228		BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
229		}
230	if (inrand != NULL)
231		BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
232			app_RAND_load_files(inrand));
233
234	BIO_printf(bio_err,"Generating RSA private key, %d bit long modulus\n",
235		num);
236	rsa=RSA_generate_key(num,f4,genrsa_cb,bio_err);
237
238	app_RAND_write_file(NULL, bio_err);
239
240	if (rsa == NULL) goto err;
241
242	/* We need to do the following for when the base number size is <
243	 * long, esp windows 3.1 :-(. */
244	l=0L;
245	for (i=0; i<rsa->e->top; i++)
246		{
247#ifndef SIXTY_FOUR_BIT
248		l<<=BN_BITS4;
249		l<<=BN_BITS4;
250#endif
251		l+=rsa->e->d[i];
252		}
253	BIO_printf(bio_err,"e is %ld (0x%lX)\n",l,l);
254	{
255	PW_CB_DATA cb_data;
256	cb_data.password = passout;
257	cb_data.prompt_info = outfile;
258	if (!PEM_write_bio_RSAPrivateKey(out,rsa,enc,NULL,0,
259		(pem_password_cb *)password_callback,&cb_data))
260		goto err;
261	}
262
263	ret=0;
264err:
265	if (rsa != NULL) RSA_free(rsa);
266	if (out != NULL) BIO_free_all(out);
267	if(passout) OPENSSL_free(passout);
268	if (ret != 0)
269		ERR_print_errors(bio_err);
270	apps_shutdown();
271	OPENSSL_EXIT(ret);
272	}
273
274static void MS_CALLBACK genrsa_cb(int p, int n, void *arg)
275	{
276	char c='*';
277
278	if (p == 0) c='.';
279	if (p == 1) c='+';
280	if (p == 2) c='*';
281	if (p == 3) c='\n';
282	BIO_write((BIO *)arg,&c,1);
283	(void)BIO_flush((BIO *)arg);
284#ifdef LINT
285	p=n;
286#endif
287	}
288#else /* !OPENSSL_NO_RSA */
289
290# if PEDANTIC
291static void *dummy=&dummy;
292# endif
293
294#endif
295