sl@0: /* apps/dsaparam.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: #include <openssl/opensslconf.h>	/* for OPENSSL_NO_DSA */
sl@0: /* Until the key-gen callbacks are modified to use newer prototypes, we allow
sl@0:  * deprecated functions for openssl-internal code */
sl@0: #ifdef OPENSSL_NO_DEPRECATED
sl@0: #undef OPENSSL_NO_DEPRECATED
sl@0: #endif
sl@0: 
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: #include <assert.h>
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/dsa.h>
sl@0: #include <openssl/x509.h>
sl@0: #include <openssl/pem.h>
sl@0: 
sl@0: #undef PROG
sl@0: #define PROG	dsaparam_main
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:  * -noout
sl@0:  * -text
sl@0:  * -C
sl@0:  * -noout
sl@0:  * -genkey
sl@0:  *  #ifdef GENCB_TEST
sl@0:  * -timebomb n  - interrupt keygen after <n> seconds
sl@0:  *  #endif
sl@0:  */
sl@0: 
sl@0: #ifdef GENCB_TEST
sl@0: 
sl@0: static int stop_keygen_flag = 0;
sl@0: 
sl@0: static void timebomb_sigalarm(int foo)
sl@0: 	{
sl@0: 	stop_keygen_flag = 1;
sl@0: 	}
sl@0: 
sl@0: #endif
sl@0: 
sl@0: static int MS_CALLBACK dsa_cb(int p, int n, BN_GENCB *cb);
sl@0: 
sl@0: 
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: 	DSA *dsa=NULL;
sl@0: 	int i,badops=0,text=0;
sl@0: 	BIO *in=NULL,*out=NULL;
sl@0: 	int informat,outformat,noout=0,C=0,ret=1;
sl@0: 	char *infile,*outfile,*prog,*inrand=NULL;
sl@0: 	int numbits= -1,num,genkey=0;
sl@0: 	int need_rand=0;
sl@0: #ifndef OPENSSL_NO_ENGINE
sl@0: 	char *engine=NULL;
sl@0: #endif
sl@0: #ifdef GENCB_TEST
sl@0: 	int timebomb=0;
sl@0: #endif
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: #ifdef GENCB_TEST
sl@0: 		else if(strcmp(*argv, "-timebomb") == 0)
sl@0: 			{
sl@0: 			if (--argc < 1) goto bad;
sl@0: 			timebomb = atoi(*(++argv));
sl@0: 			}
sl@0: #endif
sl@0: 		else if (strcmp(*argv,"-text") == 0)
sl@0: 			text=1;
sl@0: 		else if (strcmp(*argv,"-C") == 0)
sl@0: 			C=1;
sl@0: 		else if (strcmp(*argv,"-genkey") == 0)
sl@0: 			{
sl@0: 			genkey=1;
sl@0: 			need_rand=1;
sl@0: 			}
sl@0: 		else if (strcmp(*argv,"-rand") == 0)
sl@0: 			{
sl@0: 			if (--argc < 1) goto bad;
sl@0: 			inrand= *(++argv);
sl@0: 			need_rand=1;
sl@0: 			}
sl@0: 		else if (strcmp(*argv,"-noout") == 0)
sl@0: 			noout=1;
sl@0: 		else if (sscanf(*argv,"%d",&num) == 1)
sl@0: 			{
sl@0: 			/* generate a key */
sl@0: 			numbits=num;
sl@0: 			need_rand=1;
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			BIO_printf(bio_err,"unknown option %s\n",*argv);
sl@0: 			badops=1;
sl@0: 			break;
sl@0: 			}
sl@0: 		argc--;
sl@0: 		argv++;
sl@0: 		}
sl@0: 
sl@0: 	if (badops)
sl@0: 		{
sl@0: bad:
sl@0: 		BIO_printf(bio_err,"%s [options] [bits] <infile >outfile\n",prog);
sl@0: 		BIO_printf(bio_err,"where options are\n");
sl@0: 		BIO_printf(bio_err," -inform arg   input format - DER or PEM\n");
sl@0: 		BIO_printf(bio_err," -outform arg  output format - DER or 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: 		BIO_printf(bio_err," -text         print as text\n");
sl@0: 		BIO_printf(bio_err," -C            Output C code\n");
sl@0: 		BIO_printf(bio_err," -noout        no output\n");
sl@0: 		BIO_printf(bio_err," -genkey       generate a DSA key\n");
sl@0: 		BIO_printf(bio_err," -rand         files to use for random number input\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: #ifdef GENCB_TEST
sl@0: 		BIO_printf(bio_err," -timebomb n   interrupt keygen after <n> seconds\n");
sl@0: #endif
sl@0: 		BIO_printf(bio_err," number        number of bits to use for generating private key\n");
sl@0: 		goto end;
sl@0: 		}
sl@0: 
sl@0: 	ERR_load_crypto_strings();
sl@0: 
sl@0: 	in=BIO_new(BIO_s_file());
sl@0: 	out=BIO_new(BIO_s_file());
sl@0: 	if ((in == NULL) || (out == NULL))
sl@0: 		{
sl@0: 		ERR_print_errors(bio_err);
sl@0: 		goto end;
sl@0: 		}
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: 	if (outfile == NULL)
sl@0: 		{
sl@0: 		BIO_set_fp(out,stdout,BIO_NOCLOSE);
sl@0: 		
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: #ifndef OPENSSL_NO_ENGINE
sl@0:         e = setup_engine(bio_err, engine, 0);
sl@0: #endif
sl@0: 
sl@0: 	if (need_rand)
sl@0: 		{
sl@0: 		app_RAND_load_file(NULL, bio_err, (inrand != NULL));
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: 
sl@0: 	if (numbits > 0)
sl@0: 		{
sl@0: 		BN_GENCB cb;
sl@0: 		BN_GENCB_set(&cb, dsa_cb, bio_err);
sl@0: 		assert(need_rand);
sl@0: 		dsa = DSA_new();
sl@0: 		if(!dsa)
sl@0: 			{
sl@0: 			BIO_printf(bio_err,"Error allocating DSA object\n");
sl@0: 			goto end;
sl@0: 			}
sl@0: 		BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num);
sl@0: 	        BIO_printf(bio_err,"This could take some time\n");
sl@0: #ifdef GENCB_TEST
sl@0: 		if(timebomb > 0)
sl@0: 	{
sl@0: 		struct sigaction act;
sl@0: 		act.sa_handler = timebomb_sigalarm;
sl@0: 		act.sa_flags = 0;
sl@0: 		BIO_printf(bio_err,"(though I'll stop it if not done within %d secs)\n",
sl@0: 				timebomb);
sl@0: 		if(sigaction(SIGALRM, &act, NULL) != 0)
sl@0: 			{
sl@0: 			BIO_printf(bio_err,"Error, couldn't set SIGALRM handler\n");
sl@0: 			goto end;
sl@0: 			}
sl@0: 		alarm(timebomb);
sl@0: 	}
sl@0: #endif
sl@0: 	        if(!DSA_generate_parameters_ex(dsa,num,NULL,0,NULL,NULL, &cb))
sl@0: 			{
sl@0: #ifdef GENCB_TEST
sl@0: 			if(stop_keygen_flag)
sl@0: 				{
sl@0: 				BIO_printf(bio_err,"DSA key generation time-stopped\n");
sl@0: 				/* This is an asked-for behaviour! */
sl@0: 				ret = 0;
sl@0: 				goto end;
sl@0: 				}
sl@0: #endif
sl@0: 			BIO_printf(bio_err,"Error, DSA key generation failed\n");
sl@0: 			goto end;
sl@0: 			}
sl@0: 		}
sl@0: 	else if	(informat == FORMAT_ASN1)
sl@0: 		dsa=d2i_DSAparams_bio(in,NULL);
sl@0: 	else if (informat == FORMAT_PEM)
sl@0: 		dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL);
sl@0: 	else
sl@0: 		{
sl@0: 		BIO_printf(bio_err,"bad input format specified\n");
sl@0: 		goto end;
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: 	if (text)
sl@0: 		{
sl@0: 		DSAparams_print(out,dsa);
sl@0: 		}
sl@0: 	
sl@0: 	if (C)
sl@0: 		{
sl@0: 		unsigned char *data;
sl@0: 		int l,len,bits_p,bits_q,bits_g;
sl@0: 
sl@0: 		len=BN_num_bytes(dsa->p);
sl@0: 		bits_p=BN_num_bits(dsa->p);
sl@0: 		bits_q=BN_num_bits(dsa->q);
sl@0: 		bits_g=BN_num_bits(dsa->g);
sl@0: 		data=(unsigned char *)OPENSSL_malloc(len+20);
sl@0: 		if (data == NULL)
sl@0: 			{
sl@0: 			perror("OPENSSL_malloc");
sl@0: 			goto end;
sl@0: 			}
sl@0: 		l=BN_bn2bin(dsa->p,data);
sl@0: 		printf("static unsigned char dsa%d_p[]={",bits_p);
sl@0: 		for (i=0; i<l; i++)
sl@0: 			{
sl@0: 			if ((i%12) == 0) printf("\n\t");
sl@0: 			printf("0x%02X,",data[i]);
sl@0: 			}
sl@0: 		printf("\n\t};\n");
sl@0: 
sl@0: 		l=BN_bn2bin(dsa->q,data);
sl@0: 		printf("static unsigned char dsa%d_q[]={",bits_p);
sl@0: 		for (i=0; i<l; i++)
sl@0: 			{
sl@0: 			if ((i%12) == 0) printf("\n\t");
sl@0: 			printf("0x%02X,",data[i]);
sl@0: 			}
sl@0: 		printf("\n\t};\n");
sl@0: 
sl@0: 		l=BN_bn2bin(dsa->g,data);
sl@0: 		printf("static unsigned char dsa%d_g[]={",bits_p);
sl@0: 		for (i=0; i<l; i++)
sl@0: 			{
sl@0: 			if ((i%12) == 0) printf("\n\t");
sl@0: 			printf("0x%02X,",data[i]);
sl@0: 			}
sl@0: 		printf("\n\t};\n\n");
sl@0: 
sl@0: 		printf("DSA *get_dsa%d()\n\t{\n",bits_p);
sl@0: 		printf("\tDSA *dsa;\n\n");
sl@0: 		printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n");
sl@0: 		printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n",
sl@0: 			bits_p,bits_p);
sl@0: 		printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n",
sl@0: 			bits_p,bits_p);
sl@0: 		printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n",
sl@0: 			bits_p,bits_p);
sl@0: 		printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n");
sl@0: 		printf("\t\t{ DSA_free(dsa); return(NULL); }\n");
sl@0: 		printf("\treturn(dsa);\n\t}\n");
sl@0: 	    
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 	if (!noout)
sl@0: 		{
sl@0: 		if 	(outformat == FORMAT_ASN1)
sl@0: 			i=i2d_DSAparams_bio(out,dsa);
sl@0: 		else if (outformat == FORMAT_PEM)
sl@0: 			i=PEM_write_bio_DSAparams(out,dsa);
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 DSA parameters\n");
sl@0: 			ERR_print_errors(bio_err);
sl@0: 			goto end;
sl@0: 			}
sl@0: 		}
sl@0: 	if (genkey)
sl@0: 		{
sl@0: 		DSA *dsakey;
sl@0: 
sl@0: 		assert(need_rand);
sl@0: 		if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end;
sl@0: 		if (!DSA_generate_key(dsakey)) goto end;
sl@0: 		if 	(outformat == FORMAT_ASN1)
sl@0: 			i=i2d_DSAPrivateKey_bio(out,dsakey);
sl@0: 		else if (outformat == FORMAT_PEM)
sl@0: 			i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL);
sl@0: 		else	{
sl@0: 			BIO_printf(bio_err,"bad output format specified for outfile\n");
sl@0: 			goto end;
sl@0: 			}
sl@0: 		DSA_free(dsakey);
sl@0: 		}
sl@0: 	if (need_rand)
sl@0: 		app_RAND_write_file(NULL, bio_err);
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 (dsa != NULL) DSA_free(dsa);
sl@0: 	apps_shutdown();
sl@0: 	OPENSSL_EXIT(ret);
sl@0: 	}
sl@0: 
sl@0: static int MS_CALLBACK dsa_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: #ifdef GENCB_TEST
sl@0: 	if(stop_keygen_flag)
sl@0: 		return 0;
sl@0: #endif
sl@0: 	return 1;
sl@0: 	}
sl@0: #endif