OSX/libsecurity_apple_csp/open_ssl/bn/exp.c

   1 /*
   2  * Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 /* unused */
  20
  21 #include <stdio.h>
  22 #include <openssl/tmdiff.h>
  23 #include "bn_lcl.h"
  24
  25 #define SIZE    256
  26 #define NUM     (8*8*8)
  27 #define MOD     (8*8*8*8*8)
  28
  29 main(argc,argv)
  30 int argc;
  31 char *argv[];
  32         {
  33         BN_CTX ctx;
  34         BIGNUM a,b,c,r,rr,t,l;
  35         int j,i,size=SIZE,num=NUM,mod=MOD;
  36         char *start,*end;
  37         BN_MONT_CTX mont;
  38         double d,md;
  39
  40         BN_MONT_CTX_init(&mont);
  41         BN_CTX_init(&ctx);
  42         BN_init(&a);
  43         BN_init(&b);
  44         BN_init(&c);
  45         BN_init(&r);
  46
  47         start=ms_time_new();
  48         end=ms_time_new();
  49         while (size <= 1024*8)
  50                 {
  51                 BN_rand(&a,size,0,0);
  52                 BN_rand(&b,size,1,0);
  53                 BN_rand(&c,size,0,1);
  54
  55                 BN_mod(&a,&a,&c,&ctx);
  56
  57                 ms_time_get(start);
  58                 for (i=0; i<10; i++)
  59                         BN_MONT_CTX_set(&mont,&c,&ctx);
  60                 ms_time_get(end);
  61                 md=ms_time_diff(start,end);
  62
  63                 ms_time_get(start);
  64                 for (i=0; i<num; i++)
  65                         {
  66                         /* bn_mull(&r,&a,&b,&ctx); */
  67                         /* BN_sqr(&r,&a,&ctx); */
  68                         BN_mod_exp_mont(&r,&a,&b,&c,&ctx,&mont);
  69                         }
  70                 ms_time_get(end);
  71                 d=ms_time_diff(start,end)/* *50/33 */;
  72                 printf("%5d bit:%6.2f %6d %6.4f %4d m_set(%5.4f)\n",size,
  73                         d,num,d/num,(int)((d/num)*mod),md/10.0);
  74                 num/=8;
  75                 mod/=8;
  76                 if (num <= 0) num=1;
  77                 size*=2;
  78                 }
  79
  80         }