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/*
* Simple test driver for MPI library
*
* Test 4: Modular arithmetic tests
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the MPI Arbitrary Precision Integer Arithmetic library.
*
* The Initial Developer of the Original Code is
* Michael J. Fromberger.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/* $Id: mptest-4.c,v 1.3 2004/04/27 23:04:37 gerv%gerv.net Exp $ */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>
#include "mpi.h"
int main(int argc, char *argv[])
{
int ix;
mp_int a, b, c, m;
mp_digit r;
if(argc < 4) {
fprintf(stderr, "Usage: %s <a> <b> <m>\n", argv[0]);
return 1;
}
printf("Test 4: Modular arithmetic\n\n");
mp_init(&a);
mp_init(&b);
mp_init(&m);
mp_read_radix(&a, argv[1], 10);
mp_read_radix(&b, argv[2], 10);
mp_read_radix(&m, argv[3], 10);
printf("a = "); mp_print(&a, stdout); fputc('\n', stdout);
printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);
printf("m = "); mp_print(&m, stdout); fputc('\n', stdout);
mp_init(&c);
printf("\nc = a (mod m)\n");
mp_mod(&a, &m, &c);
printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
printf("\nc = b (mod m)\n");
mp_mod(&b, &m, &c);
printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
printf("\nc = b (mod 1853)\n");
mp_mod_d(&b, 1853, &r);
printf("c = %04X\n", r);
printf("\nc = (a + b) mod m\n");
mp_addmod(&a, &b, &m, &c);
printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
printf("\nc = (a - b) mod m\n");
mp_submod(&a, &b, &m, &c);
printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
printf("\nc = (a * b) mod m\n");
mp_mulmod(&a, &b, &m, &c);
printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
printf("\nc = (a ** b) mod m\n");
mp_exptmod(&a, &b, &m, &c);
printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
printf("\nIn-place modular squaring test:\n");
for(ix = 0; ix < 5; ix++) {
printf("a = (a * a) mod m a = ");
mp_sqrmod(&a, &m, &a);
mp_print(&a, stdout);
fputc('\n', stdout);
}
mp_clear(&c);
mp_clear(&m);
mp_clear(&b);
mp_clear(&a);
return 0;
}
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