random-prime.c

/* random-prime.c
 *
 * Command line tool for prime generation.
 *
 */
 
/* nettle, low-level cryptographics library
 *
 * Copyright (C) 2010 Niels Mller
 *  
 * The nettle library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or (at your
 * option) any later version.
 * 
 * The nettle library 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 Lesser General Public
 * License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with the nettle library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA 02111-1307, USA.
 */

#if HAVE_CONFIG_H
# include "config.h"
#endif

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#include "bignum.h"
#include "yarrow.h"

#include "io.h"

#include "getopt.h"

static void
usage(void)
{
  fprintf(stderr, "Usage: random-prime [OPTIONS] bits\n\n"
	  "Options:\n"
	  "      --help         Display this message.\n"
	  "  -v, --verbose      Display timing information.\n"
	  "  -r, --random FILE  Random data to use for seeding.\n");
}

int
main(int argc, char **argv)
{
  long bits;
  mpz_t p;
  struct yarrow256_ctx yarrow;

  int verbose = 0;  
  const char *random_file = NULL;

  int c;
  char *arg_end;

  clock_t start;
  clock_t end;
  
  static const struct option options[] =
    {
      /* Name, args, flag, val */