sl@0: /* apps/dhparam.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: /* ====================================================================
sl@0:  * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  *
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer. 
sl@0:  *
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in
sl@0:  *    the documentation and/or other materials provided with the
sl@0:  *    distribution.
sl@0:  *
sl@0:  * 3. All advertising materials mentioning features or use of this
sl@0:  *    software must display the following acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
sl@0:  *
sl@0:  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
sl@0:  *    endorse or promote products derived from this software without
sl@0:  *    prior written permission. For written permission, please contact
sl@0:  *    openssl-core@openssl.org.
sl@0:  *
sl@0:  * 5. Products derived from this software may not be called "OpenSSL"
sl@0:  *    nor may "OpenSSL" appear in their names without prior written
sl@0:  *    permission of the OpenSSL Project.
sl@0:  *
sl@0:  * 6. Redistributions of any form whatsoever must retain the following
sl@0:  *    acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
sl@0:  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
sl@0:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
sl@0:  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
sl@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sl@0:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
sl@0:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
sl@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
sl@0:  * OF THE POSSIBILITY OF SUCH DAMAGE.
sl@0:  * ====================================================================
sl@0:  *
sl@0:  * This product includes cryptographic software written by Eric Young
sl@0:  * (eay@cryptsoft.com).  This product includes software written by Tim
sl@0:  * Hudson (tjh@cryptsoft.com).
sl@0:  *
sl@0:  */
sl@0: 
sl@0: #include <openssl/opensslconf.h>	/* for OPENSSL_NO_DH */
sl@0: #ifndef OPENSSL_NO_DH
sl@0: #include <stdio.h>
sl@0: #include <stdlib.h>
sl@0: #include <time.h>
sl@0: #include <string.h>
sl@0: #include "apps.h"
sl@0: #include <openssl/bio.h>
sl@0: #include <openssl/err.h>
sl@0: #include <openssl/bn.h>
sl@0: #include <openssl/dh.h>
sl@0: #include <openssl/x509.h>
sl@0: #include <openssl/pem.h>
sl@0: 
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: #include <openssl/dsa.h>
sl@0: #endif
sl@0: 
sl@0: #undef PROG
sl@0: #define PROG	dhparam_main
sl@0: 
sl@0: #define DEFBITS	512
sl@0: 
sl@0: /* -inform arg	- input format - default PEM (DER or PEM)
sl@0:  * -outform arg - output format - default PEM
sl@0:  * -in arg	- input file - default stdin
sl@0:  * -out arg	- output file - default stdout
sl@0:  * -dsaparam  - read or generate DSA parameters, convert to DH
sl@0:  * -check	- check the parameters are ok
sl@0:  * -noout
sl@0:  * -text
sl@0:  * -C
sl@0:  */
sl@0: 
sl@0: static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb);
sl@0: 
sl@0: int MAIN(int, char **);
sl@0: 
sl@0: int MAIN(int argc, char **argv)
sl@0: 	{
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 	ENGINE *e = NULL;
sl@0: #endif
sl@0: 	DH *dh=NULL;
sl@0: 	int i,badops=0,text=0;
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 	int dsaparam=0;
sl@0: #endif
sl@0: 	BIO *in=NULL,*out=NULL;
sl@0: 	int informat,outformat,check=0,noout=0,C=0,ret=1;
sl@0: 	char *infile,*outfile,*prog;
sl@0: 	char *inrand=NULL;
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 	char *engine=NULL;
sl@0: #endif
sl@0: 	int num = 0, g = 0;
sl@0: 
sl@0: 	apps_startup();
sl@0: 
sl@0: 	if (bio_err == NULL)
sl@0: 		if ((bio_err=BIO_new(BIO_s_file())) != NULL)
sl@0: 			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
sl@0: 
sl@0: 
sl@0: 	if (!load_config(bio_err, NULL))
sl@0: 		goto end;
sl@0: 
sl@0: 	infile=NULL;
sl@0: 	outfile=NULL;
sl@0: 	informat=FORMAT_PEM;
sl@0: 	outformat=FORMAT_PEM;
sl@0: 
sl@0: 	prog=argv[0];
sl@0: 	argc--;
sl@0: 	argv++;
sl@0: 	while (argc >= 1)
sl@0: 		{
sl@0: 		if 	(strcmp(*argv,"-inform") == 0)
sl@0: 			{
sl@0: 			if (--argc < 1) goto bad;
sl@0: 			informat=str2fmt(*(++argv));
sl@0: 			}
sl@0: 		else if (strcmp(*argv,"-outform") == 0)
sl@0: 			{
sl@0: 			if (--argc < 1) goto bad;
sl@0: 			outformat=str2fmt(*(++argv));
sl@0: 			}
sl@0: 		else if (strcmp(*argv,"-in") == 0)
sl@0: 			{
sl@0: 			if (--argc < 1) goto bad;
sl@0: 			infile= *(++argv);
sl@0: 			}
sl@0: 		else if (strcmp(*argv,"-out") == 0)
sl@0: 			{
sl@0: 			if (--argc < 1) goto bad;
sl@0: 			outfile= *(++argv);
sl@0: 			}
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 		else if (strcmp(*argv,"-engine") == 0)
sl@0: 			{
sl@0: 			if (--argc < 1) goto bad;
sl@0: 			engine= *(++argv);
sl@0: 			}
sl@0: #endif
sl@0: 		else if (strcmp(*argv,"-check") == 0)
sl@0: 			check=1;
sl@0: 		else if (strcmp(*argv,"-text") == 0)
sl@0: 			text=1;
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 		else if (strcmp(*argv,"-dsaparam") == 0)
sl@0: 			dsaparam=1;
sl@0: #endif
sl@0: 		else if (strcmp(*argv,"-C") == 0)
sl@0: 			C=1;
sl@0: 		else if (strcmp(*argv,"-noout") == 0)
sl@0: 			noout=1;
sl@0: 		else if (strcmp(*argv,"-2") == 0)
sl@0: 			g=2;
sl@0: 		else if (strcmp(*argv,"-5") == 0)
sl@0: 			g=5;
sl@0: 		else if (strcmp(*argv,"-rand") == 0)
sl@0: 			{
sl@0: 			if (--argc < 1) goto bad;
sl@0: 			inrand= *(++argv);
sl@0: 			}
sl@0: 		else if (((sscanf(*argv,"%d",&num) == 0) || (num <= 0)))
sl@0: 			goto bad;
sl@0: 		argv++;
sl@0: 		argc--;
sl@0: 		}
sl@0: 
sl@0: 	if (badops)
sl@0: 		{
sl@0: bad:
sl@0: 		BIO_printf(bio_err,"%s [options] [numbits]\n",prog);
sl@0: 		BIO_printf(bio_err,"where options are\n");
sl@0: 		BIO_printf(bio_err," -inform arg   input format - one of DER PEM\n");
sl@0: 		BIO_printf(bio_err," -outform arg  output format - one of DER PEM\n");
sl@0: 		BIO_printf(bio_err," -in arg       input file\n");
sl@0: 		BIO_printf(bio_err," -out arg      output file\n");
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 		BIO_printf(bio_err," -dsaparam     read or generate DSA parameters, convert to DH\n");
sl@0: #endif
sl@0: 		BIO_printf(bio_err," -check        check the DH parameters\n");
sl@0: 		BIO_printf(bio_err," -text         print a text form of the DH parameters\n");
sl@0: 		BIO_printf(bio_err," -C            Output C code\n");
sl@0: 		BIO_printf(bio_err," -2            generate parameters using  2 as the generator value\n");
sl@0: 		BIO_printf(bio_err," -5            generate parameters using  5 as the generator value\n");
sl@0: 		BIO_printf(bio_err," numbits       number of bits in to generate (default 512)\n");
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 		BIO_printf(bio_err," -engine e     use engine e, possibly a hardware device.\n");
sl@0: #endif
sl@0: 		BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
sl@0: 		BIO_printf(bio_err,"               - load the file (or the files in the directory) into\n");
sl@0: 		BIO_printf(bio_err,"               the random number generator\n");
sl@0: 		BIO_printf(bio_err," -noout        no output\n");
sl@0: 		goto end;
sl@0: 		}
sl@0: 
sl@0: 	ERR_load_crypto_strings();
sl@0: 
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0:         e = setup_engine(bio_err, engine, 0);
sl@0: #endif
sl@0: 
sl@0: 	if (g && !num)
sl@0: 		num = DEFBITS;
sl@0: 
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 	if (dsaparam)
sl@0: 		{
sl@0: 		if (g)
sl@0: 			{
sl@0: 			BIO_printf(bio_err, "generator may not be chosen for DSA parameters\n");
sl@0: 			goto end;
sl@0: 			}
sl@0: 		}
sl@0: 	else
sl@0: #endif
sl@0: 		{
sl@0: 		/* DH parameters */
sl@0: 		if (num && !g)
sl@0: 			g = 2;
sl@0: 		}
sl@0: 
sl@0: 	if(num) {
sl@0: 
sl@0: 		BN_GENCB cb;
sl@0: 		BN_GENCB_set(&cb, dh_cb, bio_err);
sl@0: 		if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL)
sl@0: 			{
sl@0: 			BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
sl@0: 			}
sl@0: 		if (inrand != NULL)
sl@0: 			BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
sl@0: 				app_RAND_load_files(inrand));
sl@0: 
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 		if (dsaparam)
sl@0: 			{
sl@0: 			DSA *dsa = DSA_new();
sl@0: 			
sl@0: 			BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num);
sl@0: 			if(!dsa || !DSA_generate_parameters_ex(dsa, num,
sl@0: 						NULL, 0, NULL, NULL, &cb))
sl@0: 				{
sl@0: 				if(dsa) DSA_free(dsa);
sl@0: 				ERR_print_errors(bio_err);
sl@0: 				goto end;
sl@0: 				}
sl@0: 
sl@0: 			dh = DSA_dup_DH(dsa);
sl@0: 			DSA_free(dsa);
sl@0: 			if (dh == NULL)
sl@0: 				{
sl@0: 				ERR_print_errors(bio_err);
sl@0: 				goto end;
sl@0: 				}
sl@0: 			}
sl@0: 		else
sl@0: #endif
sl@0: 			{
sl@0: 			dh = DH_new();
sl@0: 			BIO_printf(bio_err,"Generating DH parameters, %d bit long safe prime, generator %d\n",num,g);
sl@0: 			BIO_printf(bio_err,"This is going to take a long time\n");
sl@0: 			if(!dh || !DH_generate_parameters_ex(dh, num, g, &cb))
sl@0: 				{
sl@0: 				if(dh) DH_free(dh);
sl@0: 				ERR_print_errors(bio_err);
sl@0: 				goto end;
sl@0: 				}
sl@0: 			}
sl@0: 
sl@0: 		app_RAND_write_file(NULL, bio_err);
sl@0: 	} else {
sl@0: 
sl@0: 		in=BIO_new(BIO_s_file());
sl@0: 		if (in == NULL)
sl@0: 			{
sl@0: 			ERR_print_errors(bio_err);
sl@0: 			goto end;
sl@0: 			}
sl@0: 		if (infile == NULL)
sl@0: 			BIO_set_fp(in,stdin,BIO_NOCLOSE);
sl@0: 			
sl@0: 		else
sl@0: 			{
sl@0: 			if (BIO_read_filename(in,infile) <= 0)
sl@0: 				{
sl@0: 				perror(infile);
sl@0: 				goto end;
sl@0: 				}
sl@0: 			}
sl@0: 
sl@0: 		if	(informat != FORMAT_ASN1 && informat != FORMAT_PEM)
sl@0: 			{
sl@0: 			BIO_printf(bio_err,"bad input format specified\n");
sl@0: 			goto end;
sl@0: 			}
sl@0: 
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 		if (dsaparam)
sl@0: 			{
sl@0: 			DSA *dsa;
sl@0: 			
sl@0: 			if (informat == FORMAT_ASN1)
sl@0: 				dsa=d2i_DSAparams_bio(in,NULL);
sl@0: 			else /* informat == FORMAT_PEM */
sl@0: 				dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL);
sl@0: 			
sl@0: 			if (dsa == NULL)
sl@0: 				{
sl@0: 				BIO_printf(bio_err,"unable to load DSA parameters\n");
sl@0: 				ERR_print_errors(bio_err);
sl@0: 				goto end;
sl@0: 				}
sl@0: 			
sl@0: 			dh = DSA_dup_DH(dsa);
sl@0: 			DSA_free(dsa);
sl@0: 			if (dh == NULL)
sl@0: 				{
sl@0: 				ERR_print_errors(bio_err);
sl@0: 				goto end;
sl@0: 				}
sl@0: 			}
sl@0: 		else
sl@0: #endif
sl@0: 			{
sl@0: 			if (informat == FORMAT_ASN1)
sl@0: 				dh=d2i_DHparams_bio(in,NULL);
sl@0: 			else /* informat == FORMAT_PEM */
sl@0: 				dh=PEM_read_bio_DHparams(in,NULL,NULL,NULL);
sl@0: 			
sl@0: 			if (dh == NULL)
sl@0: 				{
sl@0: 				BIO_printf(bio_err,"unable to load DH parameters\n");
sl@0: 				ERR_print_errors(bio_err);
sl@0: 				goto end;
sl@0: 				}
sl@0: 			}
sl@0: 		
sl@0: 		/* dh != NULL */
sl@0: 	}
sl@0: 	
sl@0: 	out=BIO_new(BIO_s_file());
sl@0: 	if (out == NULL)
sl@0: 		{
sl@0: 		ERR_print_errors(bio_err);
sl@0: 		goto end;
sl@0: 		}
sl@0: 	if (outfile == NULL)
sl@0: 		{
sl@0: 		BIO_set_fp(out,stdout,BIO_NOCLOSE);
sl@0: #ifdef OPENSSL_SYS_VMS
sl@0: 		{
sl@0: 		BIO *tmpbio = BIO_new(BIO_f_linebuffer());
sl@0: 		out = BIO_push(tmpbio, out);
sl@0: 		}
sl@0: #endif
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		if (BIO_write_filename(out,outfile) <= 0)
sl@0: 			{
sl@0: 			perror(outfile);
sl@0: 			goto end;
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 	if (text)
sl@0: 		{
sl@0: 		DHparams_print(out,dh);
sl@0: 		}
sl@0: 	
sl@0: 	if (check)
sl@0: 		{
sl@0: 		if (!DH_check(dh,&i))
sl@0: 			{
sl@0: 			ERR_print_errors(bio_err);
sl@0: 			goto end;
sl@0: 			}
sl@0: 
sl@0: 		if (i & DH_CHECK_P_NOT_PRIME)
sl@0: 			printf("p value is not prime\n");
sl@0: 		if (i & DH_CHECK_P_NOT_SAFE_PRIME)
sl@0: 			printf("p value is not a safe prime\n");
sl@0: 		if (i & DH_UNABLE_TO_CHECK_GENERATOR)
sl@0: 			printf("unable to check the generator value\n");
sl@0: 		if (i & DH_NOT_SUITABLE_GENERATOR)
sl@0: 			printf("the g value is not a generator\n");
sl@0: 		if (i == 0)
sl@0: 			printf("DH parameters appear to be ok.\n");
sl@0: 
sl@0: 		}
sl@0: 	if (C)
sl@0: 		{
sl@0: 		unsigned char *data;
sl@0: 		int len,l,bits;
sl@0: 
sl@0: 		len=BN_num_bytes(dh->p);
sl@0: 		bits=BN_num_bits(dh->p);
sl@0: 		data=(unsigned char *)OPENSSL_malloc(len);
sl@0: 		if (data == NULL)
sl@0: 			{
sl@0: 			perror("OPENSSL_malloc");
sl@0: 			goto end;
sl@0: 			}
sl@0: 		printf("#ifndef HEADER_DH_H\n"
sl@0: 		       "#include <openssl/dh.h>\n"
sl@0: 		       "#endif\n");
sl@0: 		printf("DH *get_dh%d()\n\t{\n",bits);
sl@0: 
sl@0: 		l=BN_bn2bin(dh->p,data);
sl@0: 		printf("\tstatic unsigned char dh%d_p[]={",bits);
sl@0: 		for (i=0; i<l; i++)
sl@0: 			{
sl@0: 			if ((i%12) == 0) printf("\n\t\t");
sl@0: 			printf("0x%02X,",data[i]);
sl@0: 			}
sl@0: 		printf("\n\t\t};\n");
sl@0: 
sl@0: 		l=BN_bn2bin(dh->g,data);
sl@0: 		printf("\tstatic unsigned char dh%d_g[]={",bits);
sl@0: 		for (i=0; i<l; i++)
sl@0: 			{
sl@0: 			if ((i%12) == 0) printf("\n\t\t");
sl@0: 			printf("0x%02X,",data[i]);
sl@0: 			}
sl@0: 		printf("\n\t\t};\n");
sl@0: 
sl@0: 		printf("\tDH *dh;\n\n");
sl@0: 		printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");
sl@0: 		printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n",
sl@0: 			bits,bits);
sl@0: 		printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n",
sl@0: 			bits,bits);
sl@0: 		printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");
sl@0: 		printf("\t\t{ DH_free(dh); return(NULL); }\n");
sl@0: 		if (dh->length)
sl@0: 			printf("\tdh->length = %ld;\n", dh->length);
sl@0: 		printf("\treturn(dh);\n\t}\n");
sl@0: 
sl@0: 		OPENSSL_free(data);
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 	if (!noout)
sl@0: 		{
sl@0: 		if 	(outformat == FORMAT_ASN1)
sl@0: 			i=i2d_DHparams_bio(out,dh);
sl@0: 		else if (outformat == FORMAT_PEM)
sl@0: 			i=PEM_write_bio_DHparams(out,dh);
sl@0: 		else	{
sl@0: 			BIO_printf(bio_err,"bad output format specified for outfile\n");
sl@0: 			goto end;
sl@0: 			}
sl@0: 		if (!i)
sl@0: 			{
sl@0: 			BIO_printf(bio_err,"unable to write DH parameters\n");
sl@0: 			ERR_print_errors(bio_err);
sl@0: 			goto end;
sl@0: 			}
sl@0: 		}
sl@0: 	ret=0;
sl@0: end:
sl@0: 	if (in != NULL) BIO_free(in);
sl@0: 	if (out != NULL) BIO_free_all(out);
sl@0: 	if (dh != NULL) DH_free(dh);
sl@0: 	apps_shutdown();
sl@0: 	OPENSSL_EXIT(ret);
sl@0: 	}
sl@0: 
sl@0: /* dh_cb is identical to dsa_cb in apps/dsaparam.c */
sl@0: static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb)
sl@0: 	{
sl@0: 	char c='*';
sl@0: 
sl@0: 	if (p == 0) c='.';
sl@0: 	if (p == 1) c='+';
sl@0: 	if (p == 2) c='*';
sl@0: 	if (p == 3) c='\n';
sl@0: 	BIO_write(cb->arg,&c,1);
sl@0: 	(void)BIO_flush(cb->arg);
sl@0: #ifdef LINT
sl@0: 	p=n;
sl@0: #endif
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0: #endif