[thirdparty/openssl.git] / apps / gendh.c

/* apps/gendh.c */
/* obsoleted by dhparam.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <openssl/opensslconf.h>

#ifndef OPENSSL_NO_DH
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/rand.h>
#include <openssl/err.h>
#include <openssl/bn.h>
#include <openssl/dh.h>
#include <openssl/x509.h>
#include <openssl/pem.h>

#define DEFBITS	2048
#undef PROG
#define PROG gendh_main

static int dh_cb(int p, int n, BN_GENCB *cb);

int MAIN(int, char **);

int MAIN(int argc, char **argv)
	{
	BN_GENCB *cb=NULL;
	DH *dh=NULL;
	int ret=1,num=DEFBITS;
	int g=2;
	char *outfile=NULL;
	char *inrand=NULL;
#ifndef OPENSSL_NO_ENGINE
	char *engine=NULL;
#endif
	BIO *out=NULL;

	apps_startup();

	if (bio_err == NULL)
		if ((bio_err=BIO_new(BIO_s_file())) != NULL)
			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);

	cb = BN_GENCB_new();
	if(!cb)
		goto end;

	BN_GENCB_set(cb, dh_cb, bio_err);

	if (!load_config(bio_err, NULL))
		goto end;

	argv++;
	argc--;
	for (;;)
		{
		if (argc <= 0) break;
		if (strcmp(*argv,"-out") == 0)
			{
			if (--argc < 1) goto bad;
			outfile= *(++argv);
			}
		else if (strcmp(*argv,"-2") == 0)
			g=2;
	/*	else if (strcmp(*argv,"-3") == 0)
			g=3; */
		else if (strcmp(*argv,"-5") == 0)
			g=5;
#ifndef OPENSSL_NO_ENGINE
		else if (strcmp(*argv,"-engine") == 0)
			{
			if (--argc < 1) goto bad;
			engine= *(++argv);
			}
#endif
		else if (strcmp(*argv,"-rand") == 0)
			{
			if (--argc < 1) goto bad;
			inrand= *(++argv);
			}
		else
			break;
		argv++;
		argc--;
		}
	if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0)))
		{
bad:
		BIO_printf(bio_err,"usage: gendh [args] [numbits]\n");
		BIO_printf(bio_err," -out file - output the key to 'file\n");
		BIO_printf(bio_err," -2        - use 2 as the generator value\n");
	/*	BIO_printf(bio_err," -3        - use 3 as the generator value\n"); */
		BIO_printf(bio_err," -5        - use 5 as the generator value\n");
#ifndef OPENSSL_NO_ENGINE
		BIO_printf(bio_err," -engine e - use engine e, possibly a hardware device.\n");
#endif
		BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
		BIO_printf(bio_err,"           - load the file (or the files in the directory) into\n");
		BIO_printf(bio_err,"             the random number generator\n");
		goto end;
		}
		
#ifndef OPENSSL_NO_ENGINE
        setup_engine(bio_err, engine, 0);
#endif

	out=BIO_new(BIO_s_file());
	if (out == NULL)
		{
		ERR_print_errors(bio_err);
		goto end;
		}

	if (outfile == NULL)
		{
		BIO_set_fp(out,stdout,BIO_NOCLOSE);
#ifdef OPENSSL_SYS_VMS
		{
		BIO *tmpbio = BIO_new(BIO_f_linebuffer());
		out = BIO_push(tmpbio, out);
		}
#endif
		}
	else
		{
		if (BIO_write_filename(out,outfile) <= 0)
			{
			perror(outfile);
			goto end;
			}
		}

	if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL)
		{
		BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
		}
	if (inrand != NULL)
		BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
			app_RAND_load_files(inrand));

	BIO_printf(bio_err,"Generating DH parameters, %d bit long safe prime, generator %d\n",num,g);
	BIO_printf(bio_err,"This is going to take a long time\n");

	if(((dh = DH_new()) == NULL) || !DH_generate_parameters_ex(dh, num, g, cb))
		goto end;
		
	app_RAND_write_file(NULL, bio_err);

	if (!PEM_write_bio_DHparams(out,dh))
		goto end;
	ret=0;
end:
	if (ret != 0)
		ERR_print_errors(bio_err);
	if (out != NULL) BIO_free_all(out);
	if (dh != NULL) DH_free(dh);
	if (cb != NULL) BN_GENCB_free(cb);
	apps_shutdown();
	OPENSSL_EXIT(ret);
	}

static int dh_cb(int p, int n, BN_GENCB *cb)
	{
	char c='*';

	if (p == 0) c='.';
	if (p == 1) c='+';
	if (p == 2) c='*';
	if (p == 3) c='\n';
	BIO_write(BN_GENCB_get_arg(cb),&c,1);
	(void)BIO_flush(BN_GENCB_get_arg(cb));
	return 1;
	}
#else /* !OPENSSL_NO_DH */

# if PEDANTIC
static void *dummy=&dummy;
# endif

#endif
Commit	Line	Data
d02b48c6	1	/* apps/gendh.c */
41918458	2	/* obsoleted by dhparam.c */
58964a49	3	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	4	* All rights reserved.
	5	*
	6	* This package is an SSL implementation written
	7	* by Eric Young (eay@cryptsoft.com).
	8	* The implementation was written so as to conform with Netscapes SSL.
	9	*
	10	* This library is free for commercial and non-commercial use as long as
	11	* the following conditions are aheared to. The following conditions
	12	* apply to all code found in this distribution, be it the RC4, RSA,
	13	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	14	* included with this distribution is covered by the same copyright terms
	15	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	16	*
	17	* Copyright remains Eric Young's, and as such any Copyright notices in
	18	* the code are not to be removed.
	19	* If this package is used in a product, Eric Young should be given attribution
	20	* as the author of the parts of the library used.
	21	* This can be in the form of a textual message at program startup or
	22	* in documentation (online or textual) provided with the package.
	23	*
	24	* Redistribution and use in source and binary forms, with or without
	25	* modification, are permitted provided that the following conditions
	26	* are met:
	27	* 1. Redistributions of source code must retain the copyright
	28	* notice, this list of conditions and the following disclaimer.
	29	* 2. Redistributions in binary form must reproduce the above copyright
	30	* notice, this list of conditions and the following disclaimer in the
	31	* documentation and/or other materials provided with the distribution.
	32	* 3. All advertising materials mentioning features or use of this software
	33	* must display the following acknowledgement:
	34	* "This product includes cryptographic software written by
	35	* Eric Young (eay@cryptsoft.com)"
	36	* The word 'cryptographic' can be left out if the rouines from the library
	37	* being used are not cryptographic related :-).
	38	* 4. If you include any Windows specific code (or a derivative thereof) from
	39	* the apps directory (application code) you must include an acknowledgement:
	40	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	41	*
	42	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	43	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	44	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	45	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	46	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	47	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	48	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	49	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	50	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	51	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	52	* SUCH DAMAGE.
	53	*
	54	* The licence and distribution terms for any publically available version or
	55	* derivative of this code cannot be changed. i.e. this code cannot simply be
	56	* copied and put under another distribution licence
	57	* [including the GNU Public Licence.]
	58	*/
	59
3eeaab4b	60	#include <openssl/opensslconf.h>
5daec7ea	61
cf1b7d96	62	#ifndef OPENSSL_NO_DH
d02b48c6 RE	63	#include <stdio.h>
	64	#include <string.h>
	65	#include <sys/types.h>
	66	#include <sys/stat.h>
	67	#include "apps.h"
ec577822 BM	68	#include <openssl/bio.h>
	69	#include <openssl/rand.h>
	70	#include <openssl/err.h>
	71	#include <openssl/bn.h>
	72	#include <openssl/dh.h>
	73	#include <openssl/x509.h>
	74	#include <openssl/pem.h>
d02b48c6	75
44e0c2ba	76	#define DEFBITS 2048
d02b48c6 RE	77	#undef PROG
	78	#define PROG gendh_main
	79
6d23cf97	80	static int dh_cb(int p, int n, BN_GENCB *cb);
667ac4ec RE	81
	82	int MAIN(int, char **);
	83
6b691a5c	84	int MAIN(int argc, char **argv)
d02b48c6	85	{
348d0d14	86	BN_GENCB *cb=NULL;
d02b48c6 RE	87	DH *dh=NULL;
	88	int ret=1,num=DEFBITS;
	89	int g=2;
	90	char *outfile=NULL;
f365611c	91	char *inrand=NULL;
0b13e9f0	92	#ifndef OPENSSL_NO_ENGINE
5270e702	93	char *engine=NULL;
0b13e9f0	94	#endif
d02b48c6 RE	95	BIO *out=NULL;
	96
	97	apps_startup();
	98
	99	if (bio_err == NULL)
	100	if ((bio_err=BIO_new(BIO_s_file())) != NULL)
58964a49	101	BIO_set_fp(bio_err,stderr,BIO_NOCLOSE\|BIO_FP_TEXT);
d02b48c6	102
348d0d14 MC	103	cb = BN_GENCB_new();
	104	if(!cb)
	105	goto end;
	106
	107	BN_GENCB_set(cb, dh_cb, bio_err);
	108
3647bee2 DSH	109	if (!load_config(bio_err, NULL))
	110	goto end;
	111
d02b48c6 RE	112	argv++;
	113	argc--;
	114	for (;;)
	115	{
	116	if (argc <= 0) break;
	117	if (strcmp(*argv,"-out") == 0)
	118	{
	119	if (--argc < 1) goto bad;
	120	outfile= *(++argv);
	121	}
	122	else if (strcmp(*argv,"-2") == 0)
	123	g=2;
	124	/* else if (strcmp(*argv,"-3") == 0)
	125	g=3; */
	126	else if (strcmp(*argv,"-5") == 0)
	127	g=5;
0b13e9f0	128	#ifndef OPENSSL_NO_ENGINE
5270e702 RL	129	else if (strcmp(*argv,"-engine") == 0)
	130	{
	131	if (--argc < 1) goto bad;
	132	engine= *(++argv);
	133	}
0b13e9f0	134	#endif
d02b48c6 RE	135	else if (strcmp(*argv,"-rand") == 0)
	136	{
	137	if (--argc < 1) goto bad;
	138	inrand= *(++argv);
	139	}
	140	else
	141	break;
	142	argv++;
	143	argc--;
	144	}
	145	if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) \|\| (num < 0)))
	146	{
	147	bad:
	148	BIO_printf(bio_err,"usage: gendh [args] [numbits]\n");
	149	BIO_printf(bio_err," -out file - output the key to 'file\n");
5270e702 RL	150	BIO_printf(bio_err," -2 - use 2 as the generator value\n");
	151	/* BIO_printf(bio_err," -3 - use 3 as the generator value\n"); */
	152	BIO_printf(bio_err," -5 - use 5 as the generator value\n");
0b13e9f0	153	#ifndef OPENSSL_NO_ENGINE
5270e702	154	BIO_printf(bio_err," -engine e - use engine e, possibly a hardware device.\n");
0b13e9f0	155	#endif
afbd0746	156	BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
d02b48c6 RE	157	BIO_printf(bio_err," - load the file (or the files in the directory) into\n");
	158	BIO_printf(bio_err," the random number generator\n");
	159	goto end;
	160	}
	161
0b13e9f0	162	#ifndef OPENSSL_NO_ENGINE
c8bbd98a	163	setup_engine(bio_err, engine, 0);
0b13e9f0	164	#endif
5270e702	165
d02b48c6 RE	166	out=BIO_new(BIO_s_file());
	167	if (out == NULL)
	168	{
	169	ERR_print_errors(bio_err);
	170	goto end;
	171	}
	172
	173	if (outfile == NULL)
645749ef	174	{
d02b48c6	175	BIO_set_fp(out,stdout,BIO_NOCLOSE);
bc36ee62	176	#ifdef OPENSSL_SYS_VMS
645749ef RL	177	{
	178	BIO *tmpbio = BIO_new(BIO_f_linebuffer());
	179	out = BIO_push(tmpbio, out);
	180	}
	181	#endif
	182	}
d02b48c6 RE	183	else
	184	{
	185	if (BIO_write_filename(out,outfile) <= 0)
	186	{
	187	perror(outfile);
	188	goto end;
	189	}
	190	}
	191
f365611c	192	if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL)
d02b48c6	193	{
a31011e8	194	BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
d02b48c6	195	}
a31011e8 BM	196	if (inrand != NULL)
	197	BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
	198	app_RAND_load_files(inrand));
d02b48c6	199
41918458	200	BIO_printf(bio_err,"Generating DH parameters, %d bit long safe prime, generator %d\n",num,g);
d02b48c6	201	BIO_printf(bio_err,"This is going to take a long time\n");
d02b48c6	202
348d0d14	203	if(((dh = DH_new()) == NULL) \|\| !DH_generate_parameters_ex(dh, num, g, cb))
2aaec9cc GT	204	goto end;
2aaec9cc GT	205
a31011e8	206	app_RAND_write_file(NULL, bio_err);
d02b48c6 RE	207
	208	if (!PEM_write_bio_DHparams(out,dh))
	209	goto end;
	210	ret=0;
	211	end:
	212	if (ret != 0)
	213	ERR_print_errors(bio_err);
645749ef	214	if (out != NULL) BIO_free_all(out);
d02b48c6	215	if (dh != NULL) DH_free(dh);
348d0d14	216	if (cb != NULL) BN_GENCB_free(cb);
c04f8cf4	217	apps_shutdown();
1c3e4a36	218	OPENSSL_EXIT(ret);
d02b48c6 RE	219	}
d02b48c6 RE	220
6d23cf97	221	static int dh_cb(int p, int n, BN_GENCB *cb)
d02b48c6 RE	222	{
	223	char c='*';
	224
	225	if (p == 0) c='.';
	226	if (p == 1) c='+';
	227	if (p == 2) c='*';
	228	if (p == 3) c='\n';
348d0d14 MC	229	BIO_write(BN_GENCB_get_arg(cb),&c,1);
348d0d14 MC	230	(void)BIO_flush(BN_GENCB_get_arg(cb));
2aaec9cc	231	return 1;
d02b48c6	232	}
d4f0339c DSH	233	#else /* !OPENSSL_NO_DH */
	234
	235	# if PEDANTIC
	236	static void *dummy=&dummy;
	237	# endif
	238
f5d7a031	239	#endif