expspeed.c revision 55714
1/* crypto/bn/expspeed.c */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59/* most of this code has been pilfered from my libdes speed.c program */ 60 61#define BASENUM 5000 62#undef PROG 63#define PROG bnspeed_main 64 65#include <stdio.h> 66#include <stdlib.h> 67#include <signal.h> 68#include <string.h> 69#include <openssl/crypto.h> 70#include <openssl/err.h> 71 72#if !defined(MSDOS) && (!defined(VMS) || defined(__DECC)) 73#define TIMES 74#endif 75 76#ifndef _IRIX 77#include <time.h> 78#endif 79#ifdef TIMES 80#include <sys/types.h> 81#include <sys/times.h> 82#endif 83 84/* Depending on the VMS version, the tms structure is perhaps defined. 85 The __TMS macro will show if it was. If it wasn't defined, we should 86 undefine TIMES, since that tells the rest of the program how things 87 should be handled. -- Richard Levitte */ 88#if defined(VMS) && defined(__DECC) && !defined(__TMS) 89#undef TIMES 90#endif 91 92#ifndef TIMES 93#include <sys/timeb.h> 94#endif 95 96#if defined(sun) || defined(__ultrix) 97#define _POSIX_SOURCE 98#include <limits.h> 99#include <sys/param.h> 100#endif 101 102#include <openssl/bn.h> 103#include <openssl/x509.h> 104 105/* The following if from times(3) man page. It may need to be changed */ 106#ifndef HZ 107# ifndef CLK_TCK 108# ifndef _BSD_CLK_TCK_ /* FreeBSD hack */ 109# define HZ 100.0 110# else /* _BSD_CLK_TCK_ */ 111# define HZ ((double)_BSD_CLK_TCK_) 112# endif 113# else /* CLK_TCK */ 114# define HZ ((double)CLK_TCK) 115# endif 116#endif 117 118#undef BUFSIZE 119#define BUFSIZE ((long)1024*8) 120int run=0; 121 122static double Time_F(int s); 123#define START 0 124#define STOP 1 125 126static double Time_F(int s) 127 { 128 double ret; 129#ifdef TIMES 130 static struct tms tstart,tend; 131 132 if (s == START) 133 { 134 times(&tstart); 135 return(0); 136 } 137 else 138 { 139 times(&tend); 140 ret=((double)(tend.tms_utime-tstart.tms_utime))/HZ; 141 return((ret < 1e-3)?1e-3:ret); 142 } 143#else /* !times() */ 144 static struct timeb tstart,tend; 145 long i; 146 147 if (s == START) 148 { 149 ftime(&tstart); 150 return(0); 151 } 152 else 153 { 154 ftime(&tend); 155 i=(long)tend.millitm-(long)tstart.millitm; 156 ret=((double)(tend.time-tstart.time))+((double)i)/1000.0; 157 return((ret < 0.001)?0.001:ret); 158 } 159#endif 160 } 161 162#define NUM_SIZES 6 163static int sizes[NUM_SIZES]={256,512,1024,2048,4096,8192}; 164static int mul_c[NUM_SIZES]={8*8*8*8*8,8*8*8*8,8*8*8,8*8,8,1}; 165/*static int sizes[NUM_SIZES]={59,179,299,419,539}; */ 166 167void do_mul_exp(BIGNUM *r,BIGNUM *a,BIGNUM *b,BIGNUM *c,BN_CTX *ctx); 168 169int main(int argc, char **argv) 170 { 171 BN_CTX *ctx; 172 BIGNUM *a,*b,*c,*r; 173 174 ctx=BN_CTX_new(); 175 a=BN_new(); 176 b=BN_new(); 177 c=BN_new(); 178 r=BN_new(); 179 180 do_mul_exp(r,a,b,c,ctx); 181 } 182 183void do_mul_exp(BIGNUM *r, BIGNUM *a, BIGNUM *b, BIGNUM *c, BN_CTX *ctx) 184 { 185 int i,k; 186 double tm; 187 long num; 188 BN_MONT_CTX m; 189 190 memset(&m,0,sizeof(m)); 191 192 num=BASENUM; 193 for (i=0; i<NUM_SIZES; i++) 194 { 195 BN_rand(a,sizes[i],1,0); 196 BN_rand(b,sizes[i],1,0); 197 BN_rand(c,sizes[i],1,1); 198 BN_mod(a,a,c,ctx); 199 BN_mod(b,b,c,ctx); 200 201 BN_MONT_CTX_set(&m,c,ctx); 202 203 Time_F(START); 204 for (k=0; k<num; k++) 205 BN_mod_exp_mont(r,a,b,c,ctx,&m); 206 tm=Time_F(STOP); 207 printf("mul %4d ^ %4d %% %d -> %8.3fms %5.1f\n",sizes[i],sizes[i],sizes[i],tm*1000.0/num,tm*mul_c[i]/num); 208 num/=7; 209 if (num <= 0) num=1; 210 } 211 212 } 213 214