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

/* apps/dh.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 <stdlib.h>
#include <time.h>
#include <string.h>
#include "apps.h"
#include "bio.h"
#include "err.h"
#include "bn.h"
#include "dh.h"
#include "x509.h"
#include "pem.h"

#undef PROG
#define PROG	dh_main

/* -inform arg	- input format - default PEM (one of DER, TXT or PEM)
 * -outform arg - output format - default PEM
 * -in arg	- input file - default stdin
 * -out arg	- output file - default stdout
 * -check	- check the parameters are ok
 * -noout
 * -text
 * -C
 */

int MAIN(int argc, char **argv)
	{
	DH *dh=NULL;
	int i,badops=0,text=0;
	BIO *in=NULL,*out=NULL;
	int informat,outformat,check=0,noout=0,C=0,ret=1;
	char *infile,*outfile,*prog;

	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);

	infile=NULL;
	outfile=NULL;
	informat=FORMAT_PEM;
	outformat=FORMAT_PEM;

	prog=argv[0];
	argc--;
	argv++;
	while (argc >= 1)
		{
		if 	(strcmp(*argv,"-inform") == 0)
			{
			if (--argc < 1) goto bad;
			informat=str2fmt(*(++argv));
			}
		else if (strcmp(*argv,"-outform") == 0)
			{
			if (--argc < 1) goto bad;
			outformat=str2fmt(*(++argv));
			}
		else if (strcmp(*argv,"-in") == 0)
			{
			if (--argc < 1) goto bad;
			infile= *(++argv);
			}
		else if (strcmp(*argv,"-out") == 0)
			{
			if (--argc < 1) goto bad;
			outfile= *(++argv);
			}
		else if (strcmp(*argv,"-check") == 0)
			check=1;
		else if (strcmp(*argv,"-text") == 0)
			text=1;
		else if (strcmp(*argv,"-C") == 0)
			C=1;
		else if (strcmp(*argv,"-noout") == 0)
			noout=1;
		else
			{
			BIO_printf(bio_err,"unknown option %s\n",*argv);
			badops=1;
			break;
			}
		argc--;
		argv++;
		}

	if (badops)
		{
bad:
		BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
		BIO_printf(bio_err,"where options are\n");
		BIO_printf(bio_err," -inform arg   input format - one of DER TXT PEM\n");
		BIO_printf(bio_err," -outform arg  output format - one of DER TXT PEM\n");
		BIO_printf(bio_err," -in arg       input file\n");
		BIO_printf(bio_err," -out arg      output file\n");
		BIO_printf(bio_err," -check        check the DH parameters\n");
		BIO_printf(bio_err," -text         print a text form of the DH parameters\n");
		BIO_printf(bio_err," -C            Output C code\n");
		BIO_printf(bio_err," -noout        no output\n");
		goto end;
		}

	ERR_load_crypto_strings();

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

	if (infile == NULL)
		BIO_set_fp(in,stdin,BIO_NOCLOSE);
	else
		{
		if (BIO_read_filename(in,infile) <= 0)
			{
			perror(infile);
			goto end;
			}
		}
	if (outfile == NULL)
		BIO_set_fp(out,stdout,BIO_NOCLOSE);
	else
		{
		if (BIO_write_filename(out,outfile) <= 0)
			{
			perror(outfile);
			goto end;
			}
		}

	if	(informat == FORMAT_ASN1)
		dh=d2i_DHparams_bio(in,NULL);
	else if (informat == FORMAT_PEM)
		dh=PEM_read_bio_DHparams(in,NULL,NULL);
	else
		{
		BIO_printf(bio_err,"bad input format specified\n");
		goto end;
		}
	if (dh == NULL)
		{
		BIO_printf(bio_err,"unable to load DH parameters\n");
		ERR_print_errors(bio_err);
		goto end;
		}

	
	if (text)
		{
		DHparams_print(out,dh);
#ifdef undef
		printf("p=");
		BN_print(stdout,dh->p);
		printf("\ng=");
		BN_print(stdout,dh->g);
		printf("\n");
		if (dh->length != 0)
			printf("recomented private length=%ld\n",dh->length);
#endif
		}
	
	if (check)
		{
		if (!DH_check(dh,&i))
			{
			ERR_print_errors(bio_err);
			goto end;
			}
		if (i & DH_CHECK_P_NOT_PRIME)
			printf("p value is not prime\n");
		if (i & DH_CHECK_P_NOT_STRONG_PRIME)
			printf("p value is not a strong prime\n");
		if (i & DH_UNABLE_TO_CHECK_GENERATOR)
			printf("unable to check the generator value\n");
		if (i & DH_NOT_SUITABLE_GENERATOR)
			printf("the g value is not a generator\n");
		if (i == 0)
			printf("DH parameters appear to be ok.\n");
		}
	if (C)
		{
		unsigned char *data;
		int len,l,bits;

		len=BN_num_bytes(dh->p);
		bits=BN_num_bits(dh->p);
		data=(unsigned char *)Malloc(len);
		if (data == NULL)
			{
			perror("Malloc");
			goto end;
			}
		l=BN_bn2bin(dh->p,data);
		printf("static unsigned char dh%d_p[]={",bits);
		for (i=0; i<l; i++)
			{
			if ((i%12) == 0) printf("\n\t");
			printf("0x%02X,",data[i]);
			}
		printf("\n\t};\n");

		l=BN_bn2bin(dh->g,data);
		printf("static unsigned char dh%d_g[]={",bits);
		for (i=0; i<l; i++)
			{
			if ((i%12) == 0) printf("\n\t");
			printf("0x%02X,",data[i]);
			}
		printf("\n\t};\n\n");

		printf("DH *get_dh%d()\n\t{\n",bits);
		printf("\tDH *dh;\n\n");
		printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");
		printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n",
			bits,bits);
		printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n",
			bits,bits);
		printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");
		printf("\t\treturn(NULL);\n");
		printf("\treturn(dh);\n\t}\n");
		}


	if (!noout)
		{
		if 	(outformat == FORMAT_ASN1)
			i=i2d_DHparams_bio(out,dh);
		else if (outformat == FORMAT_PEM)
			i=PEM_write_bio_DHparams(out,dh);
		else	{
			BIO_printf(bio_err,"bad output format specified for outfile\n");
			goto end;
			}
		if (!i)
			{
			BIO_printf(bio_err,"unable to write DH paramaters\n");
			ERR_print_errors(bio_err);
			goto end;
			}
		}
	ret=0;
end:
	if (in != NULL) BIO_free(in);
	if (out != NULL) BIO_free(out);
	if (dh != NULL) DH_free(dh);
	EXIT(ret);
	}
Commit	Line	Data
d02b48c6	1	/* apps/dh.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 <stdlib.h>
	61	#include <time.h>
	62	#include <string.h>
	63	#include "apps.h"
	64	#include "bio.h"
	65	#include "err.h"
	66	#include "bn.h"
67	#include "dh.h"
68	#include "x509.h"
69	#include "pem.h"
70
71	#undef PROG
72	#define PROG dh_main
73
74	/* -inform arg - input format - default PEM (one of DER, TXT or PEM)
75	* -outform arg - output format - default PEM
76	* -in arg - input file - default stdin
77	* -out arg - output file - default stdout
78	* -check - check the parameters are ok
79	* -noout
80	* -text
81	* -C
82	*/
83
6b691a5c	84	int MAIN(int argc, char **argv)
d02b48c6 RE	85	{
	86	DH *dh=NULL;
	87	int i,badops=0,text=0;
	88	BIO in=NULL,out=NULL;
	89	int informat,outformat,check=0,noout=0,C=0,ret=1;
	90	char infile,outfile,*prog;
	91
	92	apps_startup();
	93
	94	if (bio_err == NULL)
	95	if ((bio_err=BIO_new(BIO_s_file())) != NULL)
58964a49	96	BIO_set_fp(bio_err,stderr,BIO_NOCLOSE\|BIO_FP_TEXT);
d02b48c6 RE	97
	98	infile=NULL;
	99	outfile=NULL;
	100	informat=FORMAT_PEM;
	101	outformat=FORMAT_PEM;
	102
	103	prog=argv[0];
	104	argc--;
	105	argv++;
	106	while (argc >= 1)
	107	{
	108	if (strcmp(*argv,"-inform") == 0)
	109	{
	110	if (--argc < 1) goto bad;
	111	informat=str2fmt(*(++argv));
	112	}
	113	else if (strcmp(*argv,"-outform") == 0)
	114	{
	115	if (--argc < 1) goto bad;
	116	outformat=str2fmt(*(++argv));
	117	}
	118	else if (strcmp(*argv,"-in") == 0)
	119	{
	120	if (--argc < 1) goto bad;
	121	infile= *(++argv);
	122	}
	123	else if (strcmp(*argv,"-out") == 0)
	124	{
	125	if (--argc < 1) goto bad;
	126	outfile= *(++argv);
	127	}
	128	else if (strcmp(*argv,"-check") == 0)
	129	check=1;
	130	else if (strcmp(*argv,"-text") == 0)
	131	text=1;
	132	else if (strcmp(*argv,"-C") == 0)
	133	C=1;
	134	else if (strcmp(*argv,"-noout") == 0)
	135	noout=1;
	136	else
	137	{
	138	BIO_printf(bio_err,"unknown option %s\n",*argv);
	139	badops=1;
	140	break;
	141	}
	142	argc--;
	143	argv++;
	144	}
	145
	146	if (badops)
	147	{
	148	bad:
	149	BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
	150	BIO_printf(bio_err,"where options are\n");
	151	BIO_printf(bio_err," -inform arg input format - one of DER TXT PEM\n");
	152	BIO_printf(bio_err," -outform arg output format - one of DER TXT PEM\n");
9fe84296	153	BIO_printf(bio_err," -in arg input file\n");
d02b48c6 RE	154	BIO_printf(bio_err," -out arg output file\n");
d02b48c6 RE	155	BIO_printf(bio_err," -check check the DH parameters\n");
d1f4c83c	156	BIO_printf(bio_err," -text print a text form of the DH parameters\n");
d02b48c6 RE	157	BIO_printf(bio_err," -C Output C code\n");
	158	BIO_printf(bio_err," -noout no output\n");
	159	goto end;
	160	}
	161
	162	ERR_load_crypto_strings();
	163
	164	in=BIO_new(BIO_s_file());
	165	out=BIO_new(BIO_s_file());
	166	if ((in == NULL) \|\| (out == NULL))
	167	{
	168	ERR_print_errors(bio_err);
	169	goto end;
	170	}
	171
	172	if (infile == NULL)
	173	BIO_set_fp(in,stdin,BIO_NOCLOSE);
	174	else
	175	{
	176	if (BIO_read_filename(in,infile) <= 0)
	177	{
	178	perror(infile);
	179	goto end;
	180	}
	181	}
	182	if (outfile == NULL)
	183	BIO_set_fp(out,stdout,BIO_NOCLOSE);
	184	else
	185	{
	186	if (BIO_write_filename(out,outfile) <= 0)
	187	{
	188	perror(outfile);
	189	goto end;
	190	}
	191	}
	192
	193	if (informat == FORMAT_ASN1)
	194	dh=d2i_DHparams_bio(in,NULL);
	195	else if (informat == FORMAT_PEM)
	196	dh=PEM_read_bio_DHparams(in,NULL,NULL);
	197	else
	198	{
	199	BIO_printf(bio_err,"bad input format specified\n");
	200	goto end;
	201	}
	202	if (dh == NULL)
	203	{
	204	BIO_printf(bio_err,"unable to load DH parameters\n");
	205	ERR_print_errors(bio_err);
	206	goto end;
	207	}
	208
	209
	210
	211	if (text)
	212	{
	213	DHparams_print(out,dh);
	214	#ifdef undef
	215	printf("p=");
	216	BN_print(stdout,dh->p);
	217	printf("\ng=");
	218	BN_print(stdout,dh->g);
	219	printf("\n");
	220	if (dh->length != 0)
221	printf("recomented private length=%ld\n",dh->length);
222	#endif
223	}
224
225	if (check)
226	{
227	if (!DH_check(dh,&i))
228	{
229	ERR_print_errors(bio_err);
230	goto end;
231	}
232	if (i & DH_CHECK_P_NOT_PRIME)
233	printf("p value is not prime\n");
234	if (i & DH_CHECK_P_NOT_STRONG_PRIME)
235	printf("p value is not a strong prime\n");
236	if (i & DH_UNABLE_TO_CHECK_GENERATOR)
237	printf("unable to check the generator value\n");
238	if (i & DH_NOT_SUITABLE_GENERATOR)
239	printf("the g value is not a generator\n");
240	if (i == 0)
241	printf("DH parameters appear to be ok.\n");
242	}
243	if (C)
244	{
245	unsigned char *data;
246	int len,l,bits;
247
248	len=BN_num_bytes(dh->p);
249	bits=BN_num_bits(dh->p);
250	data=(unsigned char *)Malloc(len);
251	if (data == NULL)
252	{
253	perror("Malloc");
254	goto end;
255	}
256	l=BN_bn2bin(dh->p,data);
257	printf("static unsigned char dh%d_p[]={",bits);
258	for (i=0; i<l; i++)
259	{
260	if ((i%12) == 0) printf("\n\t");
261	printf("0x%02X,",data[i]);
262	}
263	printf("\n\t};\n");
264
265	l=BN_bn2bin(dh->g,data);
266	printf("static unsigned char dh%d_g[]={",bits);
267	for (i=0; i<l; i++)
268	{
269	if ((i%12) == 0) printf("\n\t");
270	printf("0x%02X,",data[i]);
271	}
272	printf("\n\t};\n\n");
273
274	printf("DH *get_dh%d()\n\t{\n",bits);
275	printf("\tDH *dh;\n\n");
276	printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");
277	printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n",
278	bits,bits);
279	printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n",
280	bits,bits);
281	printf("\tif ((dh->p == NULL) \|\| (dh->g == NULL))\n");
282	printf("\t\treturn(NULL);\n");
283	printf("\treturn(dh);\n\t}\n");
284	}
285
286
287	if (!noout)
288	{
289	if (outformat == FORMAT_ASN1)
290	i=i2d_DHparams_bio(out,dh);
291	else if (outformat == FORMAT_PEM)
292	i=PEM_write_bio_DHparams(out,dh);
293	else {
294	BIO_printf(bio_err,"bad output format specified for outfile\n");
295	goto end;
296	}
297	if (!i)
298	{
299	BIO_printf(bio_err,"unable to write DH paramaters\n");
300	ERR_print_errors(bio_err);
301	goto end;
302	}
303	}
304	ret=0;
305	end:
306	if (in != NULL) BIO_free(in);
307	if (out != NULL) BIO_free(out);
308	if (dh != NULL) DH_free(dh);
309	EXIT(ret);
310	}