479 lines
12 KiB
C
479 lines
12 KiB
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)
|
|
{
|
|
#ifndef OPENSSL_NO_ENGINE
|
|
ENGINE *e = NULL;
|
|
#endif
|
|
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
|
|
e = 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
|
|
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,bits_q,bits_g;
|
|
|
|
len=BN_num_bytes(dsa->p);
|
|
bits_p=BN_num_bits(dsa->p);
|
|
bits_q=BN_num_bits(dsa->q);
|
|
bits_g=BN_num_bits(dsa->g);
|
|
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)) 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");
|
|
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;
|
|
}
|
|
#endif
|