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/*
* Copyright (C) 2001 Nikos Mavroyanopoulos
*
* This file is part of GNUTLS.
*
* GNUTLS is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GNUTLS is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include "prime-gaa.h"
#include <gnutls/gnutls.h>
#include "../lib/defines.h"
int main(int argc, char **argv)
{
gaainfo info;
unsigned int i;
gnutls_dh_params dh_params;
gnutls_datum p, g;
if (gaa(argc, argv, &info) != -1) {
fprintf(stderr, "Error in the arguments.\n");
return -1;
}
gnutls_global_init();
gnutls_dh_params_init( &dh_params);
fprintf(stderr, "Generating DH parameters...");
gnutls_dh_params_generate2( dh_params, info.bits);
gnutls_dh_params_export_raw( dh_params, &p, &g, NULL);
if (info.cparams) {
printf( "/* generator */\n");
printf( "\nconst uint8 g[%d] = { ", g.size);
for (i=0;i<g.size;i++) {
if (i%7==0) printf("\n\t");
printf( "0x%.2x", g.data[i]);
if (i!=g.size-1) printf( ", ");
}
printf("\n};\n\n");
} else {
printf( "\nGenerator: ");
for (i=0;i<g.size;i++) {
if (i!=0 && i%12==0) printf("\n\t");
else if (i!=0 && i!=g.size) printf( ":");
printf( "%.2x", g.data[i]);
}
printf("\n\n");
}
/* print prime */
if (info.cparams) {
printf( "/* prime - %d bits */\n", p.size*8);
printf( "\nconst uint8 prime[%d] = { ", p.size);
for (i=0;i<p.size;i++) {
if (i%7==0) printf("\n\t");
printf( "0x%.2x", p.data[i]);
if (i!=p.size-1) printf( ", ");
}
printf("\n};\n");
} else {
printf( "Prime: ");
for (i=0;i<p.size;i++) {
if (i!=0 && i%12==0) printf("\n\t");
else if (i!=0 && i!=p.size) printf( ":");
printf( "%.2x", p.data[i]);
}
printf("\n\n");
}
if (!info.cparams) { /* generate a PKCS#3 structure */
unsigned char out[5*1024];
int ret, len = sizeof(out);
ret = gnutls_dh_params_export_pkcs3( dh_params, GNUTLS_X509_FMT_PEM,
out, &len);
if (ret == 0) {
printf("\n%s", out);
} else {
fprintf(stderr, "Error: %s\n", gnutls_strerror(ret));
}
}
gnutls_global_deinit();
return 0;
}
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