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

/* apps/dsaparam.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>	/* for OPENSSL_NO_DSA */
/* Until the key-gen callbacks are modified to use newer prototypes, we allow
 * deprecated functions for openssl-internal code */
#ifdef OPENSSL_NO_DEPRECATED
#undef OPENSSL_NO_DEPRECATED
#endif

#ifndef OPENSSL_NO_DSA
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/bn.h>
#include <openssl/dsa.h>
#include <openssl/x509.h>
#include <openssl/pem.h>

#undef PROG
#define PROG	dsaparam_main

/*-
 * -inform arg	- input format - default PEM (DER or PEM)
 * -outform arg - output format - default PEM
 * -in arg	- input file - default stdin
 * -out arg	- output file - default stdout
 * -noout
 * -text
 * -C
 * -noout
 * -genkey
 *  #ifdef GENCB_TEST
 * -timebomb n  - interrupt keygen after <n> seconds
 *  #endif
 */

#ifdef GENCB_TEST

static int stop_keygen_flag = 0;

static void timebomb_sigalarm(int foo)
	{
	stop_keygen_flag = 1;
	}

#endif

static int MS_CALLBACK dsa_cb(int p, int n, BN_GENCB *cb);

int MAIN(int, char **);

int MAIN(int argc, char **argv)
	{
	DSA *dsa=NULL;
	int i,badops=0,text=0;
	BIO *in=NULL,*out=NULL;
	int informat,outformat,noout=0,C=0,ret=1;
	char *infile,*outfile,*prog,*inrand=NULL;
	int numbits= -1,num,genkey=0;
	int need_rand=0;
#ifndef OPENSSL_NO_ENGINE
	char *engine=NULL;
#endif
#ifdef GENCB_TEST
	int timebomb=0;
#endif

	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);

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

	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);
			}
#ifndef OPENSSL_NO_ENGINE
		else if(strcmp(*argv, "-engine") == 0)
			{
			if (--argc < 1) goto bad;
			engine = *(++argv);
			}
#endif
#ifdef GENCB_TEST
		else if(strcmp(*argv, "-timebomb") == 0)
			{
			if (--argc < 1) goto bad;
			timebomb = atoi(*(++argv));
			}
#endif
		else if (strcmp(*argv,"-text") == 0)
			text=1;
		else if (strcmp(*argv,"-C") == 0)
			C=1;
		else if (strcmp(*argv,"-genkey") == 0)
			{
			genkey=1;
			need_rand=1;
			}
		else if (strcmp(*argv,"-rand") == 0)
			{
			if (--argc < 1) goto bad;
			inrand= *(++argv);
			need_rand=1;
			}
		else if (strcmp(*argv,"-noout") == 0)
			noout=1;
		else if (sscanf(*argv,"%d",&num) == 1)
			{
			/* generate a key */
			numbits=num;
			need_rand=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] [bits] <infile >outfile\n",prog);
		BIO_printf(bio_err,"where options are\n");
		BIO_printf(bio_err," -inform arg   input format - DER or PEM\n");
		BIO_printf(bio_err," -outform arg  output format - DER or PEM\n");
		BIO_printf(bio_err," -in arg       input file\n");
		BIO_printf(bio_err," -out arg      output file\n");
		BIO_printf(bio_err," -text         print as text\n");
		BIO_printf(bio_err," -C            Output C code\n");
		BIO_printf(bio_err," -noout        no output\n");
		BIO_printf(bio_err," -genkey       generate a DSA key\n");
		BIO_printf(bio_err," -rand         files to use for random number input\n");
#ifndef OPENSSL_NO_ENGINE
		BIO_printf(bio_err," -engine e     use engine e, possibly a hardware device.\n");
#endif
#ifdef GENCB_TEST
		BIO_printf(bio_err," -timebomb n   interrupt keygen after <n> seconds\n");
#endif
		BIO_printf(bio_err," number        number of bits to use for generating private key\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);
#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;
			}
		}

#ifndef OPENSSL_NO_ENGINE
        setup_engine(bio_err, engine, 0);
#endif

	if (need_rand)
		{
		app_RAND_load_file(NULL, bio_err, (inrand != NULL));
		if (inrand != NULL)
			BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
				app_RAND_load_files(inrand));
		}

	if (numbits > 0)
		{
		BN_GENCB cb;
		BN_GENCB_set(&cb, dsa_cb, bio_err);
		assert(need_rand);
		dsa = DSA_new();
		if(!dsa)
			{
			BIO_printf(bio_err,"Error allocating DSA object\n");
			goto end;
			}
		BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num);
	        BIO_printf(bio_err,"This could take some time\n");
#ifdef GENCB_TEST
		if(timebomb > 0)
	{
		struct sigaction act;
		act.sa_handler = timebomb_sigalarm;
		act.sa_flags = 0;
		BIO_printf(bio_err,"(though I'll stop it if not done within %d secs)\n",
				timebomb);
		if(sigaction(SIGALRM, &act, NULL) != 0)
			{
			BIO_printf(bio_err,"Error, couldn't set SIGALRM handler\n");
			goto end;
			}
		alarm(timebomb);
	}
#endif
	        if(!DSA_generate_parameters_ex(dsa,num,NULL,0,NULL,NULL, &cb))
			{
#ifdef GENCB_TEST
			if(stop_keygen_flag)
				{
				BIO_printf(bio_err,"DSA key generation time-stopped\n");
				/* This is an asked-for behaviour! */
				ret = 0;
				goto end;
				}
#endif
			ERR_print_errors(bio_err);
			BIO_printf(bio_err,"Error, DSA key generation failed\n");
			goto end;
			}
		}
	else if	(informat == FORMAT_ASN1)
		dsa=d2i_DSAparams_bio(in,NULL);
	else if (informat == FORMAT_PEM)
		dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL);
	else
		{
		BIO_printf(bio_err,"bad input format specified\n");
		goto end;
		}
	if (dsa == NULL)
		{
		BIO_printf(bio_err,"unable to load DSA parameters\n");
		ERR_print_errors(bio_err);
		goto end;
		}

	if (text)
		{
		DSAparams_print(out,dsa);
		}
	
	if (C)
		{
		unsigned char *data;
		int l,len,bits_p;

		len=BN_num_bytes(dsa->p);
		bits_p=BN_num_bits(dsa->p);
		data=(unsigned char *)OPENSSL_malloc(len+20);
		if (data == NULL)
			{
			perror("OPENSSL_malloc");
			goto end;
			}
		l=BN_bn2bin(dsa->p,data);
		printf("static unsigned char dsa%d_p[]={",bits_p);
		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(dsa->q,data);
		printf("static unsigned char dsa%d_q[]={",bits_p);
		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(dsa->g,data);
		printf("static unsigned char dsa%d_g[]={",bits_p);
		for (i=0; i<l; i++)
			{
			if ((i%12) == 0) printf("\n\t");
			printf("0x%02X,",data[i]);
			}
		printf("\n\t};\n\n");

		printf("DSA *get_dsa%d()\n\t{\n",bits_p);
		printf("\tDSA *dsa;\n\n");
		printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n");
		printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n",
			bits_p,bits_p);
		printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n",
			bits_p,bits_p);
		printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n",
			bits_p,bits_p);
		printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n");
		printf("\t\t{ DSA_free(dsa); return(NULL); }\n");
		printf("\treturn(dsa);\n\t}\n");
		}


	if (!noout)
		{
		if 	(outformat == FORMAT_ASN1)
			i=i2d_DSAparams_bio(out,dsa);
		else if (outformat == FORMAT_PEM)
			i=PEM_write_bio_DSAparams(out,dsa);
		else	{
			BIO_printf(bio_err,"bad output format specified for outfile\n");
			goto end;
			}
		if (!i)
			{
			BIO_printf(bio_err,"unable to write DSA parameters\n");
			ERR_print_errors(bio_err);
			goto end;
			}
		}
	if (genkey)
		{
		DSA *dsakey;

		assert(need_rand);
		if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end;
		if (!DSA_generate_key(dsakey))
			{
			ERR_print_errors(bio_err);
			DSA_free(dsakey);
			goto end;
			}
		if 	(outformat == FORMAT_ASN1)
			i=i2d_DSAPrivateKey_bio(out,dsakey);
		else if (outformat == FORMAT_PEM)
			i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL);
		else	{
			BIO_printf(bio_err,"bad output format specified for outfile\n");
			DSA_free(dsakey);
			goto end;
			}
		DSA_free(dsakey);
		}
	if (need_rand)
		app_RAND_write_file(NULL, bio_err);
	ret=0;
end:
	if (in != NULL) BIO_free(in);
	if (out != NULL) BIO_free_all(out);
	if (dsa != NULL) DSA_free(dsa);
	apps_shutdown();
	OPENSSL_EXIT(ret);
	}

static int MS_CALLBACK dsa_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(cb->arg,&c,1);
	(void)BIO_flush(cb->arg);
#ifdef LINT
	p=n;
#endif
#ifdef GENCB_TEST
	if(stop_keygen_flag)
		return 0;
#endif
	return 1;
	}
#else /* !OPENSSL_NO_DSA */

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

#endif
Commit	Line	Data
d02b48c6	1	/* apps/dsaparam.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
3eeaab4b	59	#include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */
5daec7ea GT	60	/* Until the key-gen callbacks are modified to use newer prototypes, we allow
	61	* deprecated functions for openssl-internal code */
	62	#ifdef OPENSSL_NO_DEPRECATED
	63	#undef OPENSSL_NO_DEPRECATED
	64	#endif
	65
cf1b7d96	66	#ifndef OPENSSL_NO_DSA
a31011e8	67	#include <assert.h>
d02b48c6 RE	68	#include <stdio.h>
	69	#include <stdlib.h>
	70	#include <time.h>
	71	#include <string.h>
	72	#include "apps.h"
ec577822 BM	73	#include <openssl/bio.h>
	74	#include <openssl/err.h>
	75	#include <openssl/bn.h>
ec577822 BM	76	#include <openssl/dsa.h>
	77	#include <openssl/x509.h>
	78	#include <openssl/pem.h>
d02b48c6 RE	79
	80	#undef PROG
	81	#define PROG dsaparam_main
	82
6977c7e2 TH	83	/*-
6977c7e2 TH	84	* -inform arg - input format - default PEM (DER or PEM)
d02b48c6 RE	85	* -outform arg - output format - default PEM
	86	* -in arg - input file - default stdin
	87	* -out arg - output file - default stdout
	88	* -noout
	89	* -text
	90	* -C
	91	* -noout
dfeab068	92	* -genkey
5daec7ea GT	93	* #ifdef GENCB_TEST
	94	* -timebomb n - interrupt keygen after <n> seconds
	95	* #endif
d02b48c6 RE	96	*/
d02b48c6 RE	97
5daec7ea GT	98	#ifdef GENCB_TEST
	99
	100	static int stop_keygen_flag = 0;
	101
f92570f0	102	static void timebomb_sigalarm(int foo)
5daec7ea GT	103	{
	104	stop_keygen_flag = 1;
	105	}
	106
	107	#endif
	108
	109	static int MS_CALLBACK dsa_cb(int p, int n, BN_GENCB *cb);
667ac4ec RE	110
	111	int MAIN(int, char **);
	112
6b691a5c	113	int MAIN(int argc, char **argv)
d02b48c6 RE	114	{
	115	DSA *dsa=NULL;
	116	int i,badops=0,text=0;
	117	BIO in=NULL,out=NULL;
	118	int informat,outformat,noout=0,C=0,ret=1;
f365611c	119	char infile,outfile,prog,inrand=NULL;
dfeab068	120	int numbits= -1,num,genkey=0;
a31011e8	121	int need_rand=0;
0b13e9f0	122	#ifndef OPENSSL_NO_ENGINE
5270e702	123	char *engine=NULL;
0b13e9f0	124	#endif
5daec7ea GT	125	#ifdef GENCB_TEST
	126	int timebomb=0;
	127	#endif
d02b48c6 RE	128
	129	apps_startup();
	130
	131	if (bio_err == NULL)
	132	if ((bio_err=BIO_new(BIO_s_file())) != NULL)
58964a49	133	BIO_set_fp(bio_err,stderr,BIO_NOCLOSE\|BIO_FP_TEXT);
d02b48c6	134
3647bee2 DSH	135	if (!load_config(bio_err, NULL))
	136	goto end;
	137
d02b48c6 RE	138	infile=NULL;
	139	outfile=NULL;
	140	informat=FORMAT_PEM;
	141	outformat=FORMAT_PEM;
	142
	143	prog=argv[0];
	144	argc--;
	145	argv++;
	146	while (argc >= 1)
	147	{
	148	if (strcmp(*argv,"-inform") == 0)
	149	{
	150	if (--argc < 1) goto bad;
	151	informat=str2fmt(*(++argv));
	152	}
	153	else if (strcmp(*argv,"-outform") == 0)
	154	{
	155	if (--argc < 1) goto bad;
	156	outformat=str2fmt(*(++argv));
	157	}
	158	else if (strcmp(*argv,"-in") == 0)
	159	{
	160	if (--argc < 1) goto bad;
	161	infile= *(++argv);
	162	}
	163	else if (strcmp(*argv,"-out") == 0)
	164	{
	165	if (--argc < 1) goto bad;
	166	outfile= *(++argv);
	167	}
0b13e9f0	168	#ifndef OPENSSL_NO_ENGINE
5270e702 RL	169	else if(strcmp(*argv, "-engine") == 0)
	170	{
	171	if (--argc < 1) goto bad;
	172	engine = *(++argv);
	173	}
0b13e9f0	174	#endif
5daec7ea GT	175	#ifdef GENCB_TEST
	176	else if(strcmp(*argv, "-timebomb") == 0)
	177	{
	178	if (--argc < 1) goto bad;
	179	timebomb = atoi(*(++argv));
	180	}
	181	#endif
d02b48c6 RE	182	else if (strcmp(*argv,"-text") == 0)
	183	text=1;
	184	else if (strcmp(*argv,"-C") == 0)
	185	C=1;
dfeab068	186	else if (strcmp(*argv,"-genkey") == 0)
a31011e8	187	{
dfeab068	188	genkey=1;
a31011e8 BM	189	need_rand=1;
a31011e8 BM	190	}
d02b48c6 RE	191	else if (strcmp(*argv,"-rand") == 0)
	192	{
	193	if (--argc < 1) goto bad;
	194	inrand= *(++argv);
a31011e8	195	need_rand=1;
d02b48c6 RE	196	}
	197	else if (strcmp(*argv,"-noout") == 0)
	198	noout=1;
	199	else if (sscanf(*argv,"%d",&num) == 1)
	200	{
	201	/* generate a key */
	202	numbits=num;
a31011e8	203	need_rand=1;
d02b48c6 RE	204	}
	205	else
	206	{
	207	BIO_printf(bio_err,"unknown option %s\n",*argv);
	208	badops=1;
	209	break;
	210	}
	211	argc--;
	212	argv++;
	213	}
	214
	215	if (badops)
	216	{
	217	bad:
	218	BIO_printf(bio_err,"%s [options] [bits] <infile >outfile\n",prog);
	219	BIO_printf(bio_err,"where options are\n");
def38e38 DSH	220	BIO_printf(bio_err," -inform arg input format - DER or PEM\n");
def38e38 DSH	221	BIO_printf(bio_err," -outform arg output format - DER or PEM\n");
9fe84296	222	BIO_printf(bio_err," -in arg input file\n");
d02b48c6	223	BIO_printf(bio_err," -out arg output file\n");
c6efe6f5	224	BIO_printf(bio_err," -text print as text\n");
d02b48c6 RE	225	BIO_printf(bio_err," -C Output C code\n");
d02b48c6 RE	226	BIO_printf(bio_err," -noout no output\n");
690ecff7	227	BIO_printf(bio_err," -genkey generate a DSA key\n");
f365611c	228	BIO_printf(bio_err," -rand files to use for random number input\n");
0b13e9f0	229	#ifndef OPENSSL_NO_ENGINE
5270e702	230	BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n");
0b13e9f0	231	#endif
5daec7ea GT	232	#ifdef GENCB_TEST
	233	BIO_printf(bio_err," -timebomb n interrupt keygen after <n> seconds\n");
	234	#endif
d02b48c6 RE	235	BIO_printf(bio_err," number number of bits to use for generating private key\n");
	236	goto end;
	237	}
	238
	239	ERR_load_crypto_strings();
	240
	241	in=BIO_new(BIO_s_file());
	242	out=BIO_new(BIO_s_file());
	243	if ((in == NULL) \|\| (out == NULL))
	244	{
	245	ERR_print_errors(bio_err);
	246	goto end;
	247	}
	248
	249	if (infile == NULL)
	250	BIO_set_fp(in,stdin,BIO_NOCLOSE);
	251	else
	252	{
	253	if (BIO_read_filename(in,infile) <= 0)
	254	{
	255	perror(infile);
	256	goto end;
	257	}
	258	}
	259	if (outfile == NULL)
645749ef	260	{
d02b48c6	261	BIO_set_fp(out,stdout,BIO_NOCLOSE);
bc36ee62	262	#ifdef OPENSSL_SYS_VMS
645749ef RL	263	{
	264	BIO *tmpbio = BIO_new(BIO_f_linebuffer());
	265	out = BIO_push(tmpbio, out);
	266	}
	267	#endif
	268	}
d02b48c6 RE	269	else
	270	{
	271	if (BIO_write_filename(out,outfile) <= 0)
	272	{
	273	perror(outfile);
	274	goto end;
	275	}
	276	}
	277
0b13e9f0	278	#ifndef OPENSSL_NO_ENGINE
e9735943	279	setup_engine(bio_err, engine, 0);
0b13e9f0	280	#endif
5270e702	281
a31011e8	282	if (need_rand)
d02b48c6	283	{
f365611c	284	app_RAND_load_file(NULL, bio_err, (inrand != NULL));
a31011e8 BM	285	if (inrand != NULL)
	286	BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
	287	app_RAND_load_files(inrand));
	288	}
d02b48c6	289
a31011e8 BM	290	if (numbits > 0)
a31011e8 BM	291	{
5daec7ea	292	BN_GENCB cb;
e1898724	293	BN_GENCB_set(&cb, dsa_cb, bio_err);
a31011e8	294	assert(need_rand);
5daec7ea GT	295	dsa = DSA_new();
	296	if(!dsa)
	297	{
	298	BIO_printf(bio_err,"Error allocating DSA object\n");
	299	goto end;
	300	}
d02b48c6 RE	301	BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num);
d02b48c6 RE	302	BIO_printf(bio_err,"This could take some time\n");
5daec7ea GT	303	#ifdef GENCB_TEST
	304	if(timebomb > 0)
	305	{
	306	struct sigaction act;
	307	act.sa_handler = timebomb_sigalarm;
	308	act.sa_flags = 0;
	309	BIO_printf(bio_err,"(though I'll stop it if not done within %d secs)\n",
	310	timebomb);
	311	if(sigaction(SIGALRM, &act, NULL) != 0)
	312	{
	313	BIO_printf(bio_err,"Error, couldn't set SIGALRM handler\n");
	314	goto end;
	315	}
	316	alarm(timebomb);
	317	}
	318	#endif
	319	if(!DSA_generate_parameters_ex(dsa,num,NULL,0,NULL,NULL, &cb))
	320	{
	321	#ifdef GENCB_TEST
	322	if(stop_keygen_flag)
	323	{
	324	BIO_printf(bio_err,"DSA key generation time-stopped\n");
	325	/* This is an asked-for behaviour! */
	326	ret = 0;
	327	goto end;
	328	}
	329	#endif
68d2cf51	330	ERR_print_errors(bio_err);
5daec7ea GT	331	BIO_printf(bio_err,"Error, DSA key generation failed\n");
	332	goto end;
	333	}
d02b48c6 RE	334	}
	335	else if (informat == FORMAT_ASN1)
	336	dsa=d2i_DSAparams_bio(in,NULL);
	337	else if (informat == FORMAT_PEM)
74678cc2	338	dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL);
d02b48c6 RE	339	else
	340	{
	341	BIO_printf(bio_err,"bad input format specified\n");
	342	goto end;
	343	}
	344	if (dsa == NULL)
	345	{
	346	BIO_printf(bio_err,"unable to load DSA parameters\n");
	347	ERR_print_errors(bio_err);
	348	goto end;
	349	}
	350
	351	if (text)
	352	{
	353	DSAparams_print(out,dsa);
	354	}
	355
	356	if (C)
	357	{
	358	unsigned char *data;
e9735943	359	int l,len,bits_p;
d02b48c6 RE	360
	361	len=BN_num_bytes(dsa->p);
	362	bits_p=BN_num_bits(dsa->p);
26a3a48d	363	data=(unsigned char *)OPENSSL_malloc(len+20);
d02b48c6 RE	364	if (data == NULL)
d02b48c6 RE	365	{
26a3a48d	366	perror("OPENSSL_malloc");
d02b48c6 RE	367	goto end;
	368	}
	369	l=BN_bn2bin(dsa->p,data);
	370	printf("static unsigned char dsa%d_p[]={",bits_p);
	371	for (i=0; i<l; i++)
	372	{
	373	if ((i%12) == 0) printf("\n\t");
	374	printf("0x%02X,",data[i]);
	375	}
	376	printf("\n\t};\n");
	377
	378	l=BN_bn2bin(dsa->q,data);
	379	printf("static unsigned char dsa%d_q[]={",bits_p);
	380	for (i=0; i<l; i++)
	381	{
	382	if ((i%12) == 0) printf("\n\t");
	383	printf("0x%02X,",data[i]);
	384	}
	385	printf("\n\t};\n");
	386
	387	l=BN_bn2bin(dsa->g,data);
	388	printf("static unsigned char dsa%d_g[]={",bits_p);
	389	for (i=0; i<l; i++)
	390	{
	391	if ((i%12) == 0) printf("\n\t");
	392	printf("0x%02X,",data[i]);
	393	}
	394	printf("\n\t};\n\n");
	395
	396	printf("DSA *get_dsa%d()\n\t{\n",bits_p);
	397	printf("\tDSA *dsa;\n\n");
	398	printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n");
	399	printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n",
	400	bits_p,bits_p);
	401	printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n",
	402	bits_p,bits_p);
	403	printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n",
	404	bits_p,bits_p);
	405	printf("\tif ((dsa->p == NULL) \|\| (dsa->q == NULL) \|\| (dsa->g == NULL))\n");
c06648f7	406	printf("\t\t{ DSA_free(dsa); return(NULL); }\n");
d02b48c6 RE	407	printf("\treturn(dsa);\n\t}\n");
	408	}
	409
	410
	411	if (!noout)
	412	{
	413	if (outformat == FORMAT_ASN1)
	414	i=i2d_DSAparams_bio(out,dsa);
	415	else if (outformat == FORMAT_PEM)
	416	i=PEM_write_bio_DSAparams(out,dsa);
	417	else {
	418	BIO_printf(bio_err,"bad output format specified for outfile\n");
	419	goto end;
	420	}
	421	if (!i)
	422	{
657e60fa	423	BIO_printf(bio_err,"unable to write DSA parameters\n");
d02b48c6 RE	424	ERR_print_errors(bio_err);
	425	goto end;
	426	}
	427	}
dfeab068 RE	428	if (genkey)
	429	{
	430	DSA *dsakey;
	431
a31011e8	432	assert(need_rand);
dfeab068	433	if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end;
68d2cf51 BL	434	if (!DSA_generate_key(dsakey))
	435	{
	436	ERR_print_errors(bio_err);
	437	DSA_free(dsakey);
	438	goto end;
	439	}
dfeab068 RE	440	if (outformat == FORMAT_ASN1)
	441	i=i2d_DSAPrivateKey_bio(out,dsakey);
	442	else if (outformat == FORMAT_PEM)
74678cc2	443	i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL);
dfeab068 RE	444	else {
dfeab068 RE	445	BIO_printf(bio_err,"bad output format specified for outfile\n");
68d2cf51	446	DSA_free(dsakey);
dfeab068 RE	447	goto end;
	448	}
	449	DSA_free(dsakey);
	450	}
a31011e8 BM	451	if (need_rand)
a31011e8 BM	452	app_RAND_write_file(NULL, bio_err);
d02b48c6 RE	453	ret=0;
	454	end:
	455	if (in != NULL) BIO_free(in);
645749ef	456	if (out != NULL) BIO_free_all(out);
d02b48c6	457	if (dsa != NULL) DSA_free(dsa);
c04f8cf4	458	apps_shutdown();
1c3e4a36	459	OPENSSL_EXIT(ret);
d02b48c6 RE	460	}
d02b48c6 RE	461
5daec7ea	462	static int MS_CALLBACK dsa_cb(int p, int n, BN_GENCB *cb)
d02b48c6 RE	463	{
	464	char c='*';
	465
	466	if (p == 0) c='.';
	467	if (p == 1) c='+';
	468	if (p == 2) c='*';
	469	if (p == 3) c='\n';
5daec7ea GT	470	BIO_write(cb->arg,&c,1);
5daec7ea GT	471	(void)BIO_flush(cb->arg);
d02b48c6 RE	472	#ifdef LINT
	473	p=n;
	474	#endif
5daec7ea GT	475	#ifdef GENCB_TEST
	476	if(stop_keygen_flag)
	477	return 0;
	478	#endif
	479	return 1;
d02b48c6	480	}
7134507d DSH	481	#else /* !OPENSSL_NO_DSA */
	482
	483	# if PEDANTIC
	484	static void *dummy=&dummy;
	485	# endif
	486
f5d7a031	487	#endif