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

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

#define DEFBITS	512
#undef PROG
#define PROG gendh_main

#ifndef NOPROTO
static void MS_CALLBACK dh_cb(int p, int n, char *arg);
static long dh_load_rand(char *names);
#else
static void MS_CALLBACK dh_cb();
static long dh_load_rand();
#endif

int MAIN(int argc, char **argv)
	{
	char buffer[200];
	DH *dh=NULL;
	int ret=1,num=DEFBITS;
	int g=2;
	char *outfile=NULL;
	char *inrand=NULL,*randfile;
	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);

	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;
		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");
		BIO_printf(bio_err," -rand file:file:...\n");
		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;
		}
		
	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);
	else
		{
		if (BIO_write_filename(out,outfile) <= 0)
			{
			perror(outfile);
			goto end;
			}
		}

	randfile=RAND_file_name(buffer,200);
	if ((randfile == NULL)|| !RAND_load_file(randfile,1024L*1024L))
		BIO_printf(bio_err,"unable to load 'random state'\n");

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

	BIO_printf(bio_err,"Generating DH parameters, %d bit long strong prime, generator of %d\n",num,g);
	BIO_printf(bio_err,"This is going to take a long time\n");
	dh=DH_generate_parameters(num,g,dh_cb,(char *)bio_err);
		
	if (dh == NULL) goto end;

	if (randfile == NULL)
		BIO_printf(bio_err,"unable to write 'random state'\n");
	else
		RAND_write_file(randfile);

	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(out);
	if (dh != NULL) DH_free(dh);
	EXIT(ret);
	}

static void MS_CALLBACK dh_cb(int p, int n, char *arg)
	{
	char c='*';

	if (p == 0) c='.';
	if (p == 1) c='+';
	if (p == 2) c='*';
	if (p == 3) c='\n';
	BIO_write((BIO *)arg,&c,1);
	BIO_flush((BIO *)arg);
#ifdef LINT
	p=n;
#endif
	}

static long dh_load_rand(char *name)
	{
	char *p,*n;
	int last;
	long tot=0;

	for (;;)
		{
		last=0;
		for (p=name; ((*p != '\0') && (*p != LIST_SEPARATOR_CHAR)); p++);
		if (*p == '\0') last=1;
		*p='\0';
		n=name;
		name=p+1;
		if (*n == '\0') break;

		tot+=RAND_load_file(n,1);
		if (last) break;
		}
	return(tot);
	}
Commit	Line	Data
d02b48c6	1	/* apps/gendh.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	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 <stdio.h>
	60	#include <string.h>
	61	#include <sys/types.h>
	62	#include <sys/stat.h>
	63	#include "apps.h"
	64	#include "bio.h"
	65	#include "rand.h"
	66	#include "err.h"
67	#include "bn.h"
68	#include "dh.h"
69	#include "x509.h"
70	#include "pem.h"
71
72	#define DEFBITS 512
73	#undef PROG
74	#define PROG gendh_main
75
76	#ifndef NOPROTO
58964a49	77	static void MS_CALLBACK dh_cb(int p, int n, char *arg);
d02b48c6 RE	78	static long dh_load_rand(char *names);
	79	#else
	80	static void MS_CALLBACK dh_cb();
	81	static long dh_load_rand();
	82	#endif
	83
6b691a5c	84	int MAIN(int argc, char **argv)
d02b48c6 RE	85	{
	86	char buffer[200];
	87	DH *dh=NULL;
	88	int ret=1,num=DEFBITS;
	89	int g=2;
	90	char *outfile=NULL;
	91	char inrand=NULL,randfile;
	92	BIO *out=NULL;
	93
	94	apps_startup();
	95
	96	if (bio_err == NULL)
	97	if ((bio_err=BIO_new(BIO_s_file())) != NULL)
58964a49	98	BIO_set_fp(bio_err,stderr,BIO_NOCLOSE\|BIO_FP_TEXT);
d02b48c6 RE	99
	100	argv++;
	101	argc--;
	102	for (;;)
	103	{
	104	if (argc <= 0) break;
	105	if (strcmp(*argv,"-out") == 0)
	106	{
	107	if (--argc < 1) goto bad;
	108	outfile= *(++argv);
	109	}
	110	else if (strcmp(*argv,"-2") == 0)
	111	g=2;
	112	/* else if (strcmp(*argv,"-3") == 0)
	113	g=3; */
	114	else if (strcmp(*argv,"-5") == 0)
	115	g=5;
	116	else if (strcmp(*argv,"-rand") == 0)
	117	{
	118	if (--argc < 1) goto bad;
	119	inrand= *(++argv);
	120	}
	121	else
	122	break;
	123	argv++;
	124	argc--;
	125	}
	126	if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) \|\| (num < 0)))
	127	{
	128	bad:
	129	BIO_printf(bio_err,"usage: gendh [args] [numbits]\n");
	130	BIO_printf(bio_err," -out file - output the key to 'file\n");
	131	BIO_printf(bio_err," -2 use 2 as the generator value\n");
	132	/* BIO_printf(bio_err," -3 use 3 as the generator value\n"); */
	133	BIO_printf(bio_err," -5 use 5 as the generator value\n");
	134	BIO_printf(bio_err," -rand file:file:...\n");
	135	BIO_printf(bio_err," - load the file (or the files in the directory) into\n");
	136	BIO_printf(bio_err," the random number generator\n");
	137	goto end;
	138	}
	139
	140	out=BIO_new(BIO_s_file());
	141	if (out == NULL)
	142	{
	143	ERR_print_errors(bio_err);
	144	goto end;
	145	}
	146
	147	if (outfile == NULL)
	148	BIO_set_fp(out,stdout,BIO_NOCLOSE);
	149	else
	150	{
	151	if (BIO_write_filename(out,outfile) <= 0)
	152	{
	153	perror(outfile);
	154	goto end;
	155	}
	156	}
	157
	158	randfile=RAND_file_name(buffer,200);
	159	if ((randfile == NULL)\|\| !RAND_load_file(randfile,1024L*1024L))
	160	BIO_printf(bio_err,"unable to load 'random state'\n");
	161
	162	if (inrand == NULL)
163	BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
164	else
165	{
166	BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
167	dh_load_rand(inrand));
168	}
169
170	BIO_printf(bio_err,"Generating DH parameters, %d bit long strong prime, generator of %d\n",num,g);
171	BIO_printf(bio_err,"This is going to take a long time\n");
58964a49	172	dh=DH_generate_parameters(num,g,dh_cb,(char *)bio_err);
d02b48c6 RE	173
	174	if (dh == NULL) goto end;
	175
	176	if (randfile == NULL)
	177	BIO_printf(bio_err,"unable to write 'random state'\n");
	178	else
	179	RAND_write_file(randfile);
	180
	181	if (!PEM_write_bio_DHparams(out,dh))
	182	goto end;
	183	ret=0;
	184	end:
	185	if (ret != 0)
	186	ERR_print_errors(bio_err);
	187	if (out != NULL) BIO_free(out);
	188	if (dh != NULL) DH_free(dh);
	189	EXIT(ret);
	190	}
	191
6b691a5c	192	static void MS_CALLBACK dh_cb(int p, int n, char *arg)
d02b48c6 RE	193	{
	194	char c='*';
	195
	196	if (p == 0) c='.';
	197	if (p == 1) c='+';
	198	if (p == 2) c='*';
	199	if (p == 3) c='\n';
58964a49 RE	200	BIO_write((BIO *)arg,&c,1);
58964a49 RE	201	BIO_flush((BIO *)arg);
d02b48c6 RE	202	#ifdef LINT
	203	p=n;
	204	#endif
	205	}
	206
6b691a5c	207	static long dh_load_rand(char *name)
d02b48c6 RE	208	{
	209	char p,n;
	210	int last;
	211	long tot=0;
	212
	213	for (;;)
	214	{
	215	last=0;
	216	for (p=name; ((p != '\0') && (p != LIST_SEPARATOR_CHAR)); p++);
	217	if (*p == '\0') last=1;
	218	*p='\0';
	219	n=name;
	220	name=p+1;
	221	if (*n == '\0') break;
	222
	223	tot+=RAND_load_file(n,1);
	224	if (last) break;
	225	}
	226	return(tot);
	227	}
	228
	229