/**********************************************************************
This program 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.
This program 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
************************************************************************
	(c) 2004 by Paolo Ardoino  < paolo.ardoino@gmail.com >
***********************************************************************/

#define _GNU_SOURCE
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/bn.h>

void status() {}

void print_prime(char *prime)
{
	int i;
	for(i = 0; i < strlen(prime) && prime[i] == '0'; i++);
	for(; i < strlen(prime); i++)
		printf("%c", prime[i]);
	printf("\n");
}

int main(int argc, char *argv[])
{
	char *prime;
	BIGNUM *num_tmp;
	long int num_bits = 0;
	
	if(argc >= 2 && argv[1]) 
		num_bits = atol(argv[1]);
	else
		num_bits = 1024;
	printf("Prime generator by (c) 2004 Paolo Ardoino < paolo.ardoino@gmail.com >\n usage: ./genprimes [num_bits]\nGenerating %ld bits primes.\nWait...\n",num_bits);
	num_tmp = BN_new();
	for (;;) {
		BN_generate_prime(num_tmp,num_bits,1,NULL,NULL,status,NULL);
		prime = (char *)malloc(BN_num_bytes(num_tmp));
		prime = BN_bn2dec(num_tmp);
		print_prime(prime);
		free(prime);
	}
	BN_free(num_tmp);
}