security/nss/lib/freebl/mpi/tests/mptest-8.c

   1 /*
   2  *  Simple test driver for MPI library
   3  *
   4  *  Test 8: Probabilistic primality tester
   5  *
   6  * ***** BEGIN LICENSE BLOCK *****
   7  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   8  *
   9  * The contents of this file are subject to the Mozilla Public License Version
  10  * 1.1 (the "License"); you may not use this file except in compliance with
  11  * the License. You may obtain a copy of the License at
  12  * http://www.mozilla.org/MPL/
  13  *
  14  * Software distributed under the License is distributed on an "AS IS" basis,
  15  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  16  * for the specific language governing rights and limitations under the
  17  * License.
  18  *
  19  * The Original Code is the MPI Arbitrary Precision Integer Arithmetic library.
  20  *
  21  * The Initial Developer of the Original Code is
  22  * Michael J. Fromberger.
  23  * Portions created by the Initial Developer are Copyright (C) 1998
  24  * the Initial Developer. All Rights Reserved.
  25  *
  26  * Contributor(s):
  27  *
  28  * Alternatively, the contents of this file may be used under the terms of
  29  * either the GNU General Public License Version 2 or later (the "GPL"), or
  30  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  31  * in which case the provisions of the GPL or the LGPL are applicable instead
  32  * of those above. If you wish to allow use of your version of this file only
  33  * under the terms of either the GPL or the LGPL, and not to allow others to
  34  * use your version of this file under the terms of the MPL, indicate your
  35  * decision by deleting the provisions above and replace them with the notice
  36  * and other provisions required by the GPL or the LGPL. If you do not delete
  37  * the provisions above, a recipient may use your version of this file under
  38  * the terms of any one of the MPL, the GPL or the LGPL.
  39  *
  40  * ***** END LICENSE BLOCK ***** */
  41 /* $Id: mptest-8.c,v 1.5 2006/03/15 19:13:12 rrelyea%redhat.com Exp $ */
  42
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <string.h>
  46 #include <ctype.h>
  47 #include <limits.h>
  48 #include <time.h>
  49
  50 #define MP_IOFUNC 1
  51 #include "mpi.h"
  52
  53 #include "mpprime.h"
  54
  55 int main(int argc, char *argv[])
  56 {
  57   int       ix;
  58   mp_digit  num;
  59   mp_int    a;
  60
  61   srand(time(NULL));
  62
  63   if(argc < 2) {
  64     fprintf(stderr, "Usage: %s <a>\n", argv[0]);
  65     return 1;
  66   }
  67
  68   printf("Test 8: Probabilistic primality testing\n\n");
  69
  70   mp_init(&a);
  71
  72   mp_read_radix(&a, argv[1], 10);
  73
  74   printf("a = "); mp_print(&a, stdout); fputc('\n', stdout);
  75
  76   printf("\nChecking for divisibility by small primes ... \n");
  77   num = 170;
  78   if(mpp_divis_primes(&a, &num) == MP_YES) {
  79     printf("it is not prime\n");
  80     goto CLEANUP;
  81   }
  82   printf("Passed that test (not divisible by any small primes).\n");
  83
  84   for(ix = 0; ix < 10; ix++) {
  85     printf("\nPerforming Rabin-Miller test, iteration %d\n", ix + 1);
  86
  87     if(mpp_pprime(&a, 5) == MP_NO) {
  88       printf("it is not prime\n");
  89       goto CLEANUP;
  90     }
  91   }
  92   printf("All tests passed; a is probably prime\n");
  93
  94 CLEANUP:
  95   mp_clear(&a);
  96
  97   return 0;
  98 }