1 /* crypto/bn/expspeed.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
59 /* most of this code has been pilfered from my libdes speed.c program */
63 #define PROG bnspeed_main
81 #include <sys/types.h>
82 #include <sys/times.h>
89 time_t tms_uchild; /* I dunno... */
90 time_t tms_uchildsys; /* so these names are a guess :-) */
94 #include <sys/timeb.h>
97 #if defined(sun) || defined(__ultrix)
100 #include <sys/param.h>
106 /* The following if from times(3) man page. It may need to be changed */
109 # ifndef _BSD_CLK_TCK_ /* FreeBSD hack */
115 # else /* _BSD_CLK_TCK_ */
116 # define HZ ((double)_BSD_CLK_TCK_)
119 # define HZ ((double)CLK_TCK)
124 #define BUFSIZE ((long)1024*8)
128 static double Time_F(int s);
130 static double Time_F();
136 static double Time_F(s)
141 static struct tms tstart,tend;
151 ret=((double)(tend.tms_utime-tstart.tms_utime))/HZ;
152 return((ret < 1e-3)?1e-3:ret);
155 static struct timeb tstart,tend;
166 i=(long)tend.millitm-(long)tstart.millitm;
167 ret=((double)(tend.time-tstart.time))+((double)i)/1000.0;
168 return((ret < 0.001)?0.001:ret);
174 static int sizes[NUM_SIZES]={256,512,1024,2048,4096,8192};
175 static int mul_c[NUM_SIZES]={8*8*8*8*8,8*8*8*8,8*8*8,8*8,8,1};
176 /*static int sizes[NUM_SIZES]={59,179,299,419,539}; */
178 void do_mul_exp(BIGNUM *r,BIGNUM *a,BIGNUM *b,BIGNUM *c,BN_CTX *ctx);
193 do_mul_exp(r,a,b,c,ctx);
196 void do_mul_exp(r,a,b,c,ctx)
208 memset(&m,0,sizeof(m));
211 for (i=0; i<NUM_SIZES; i++)
213 BN_rand(a,sizes[i],1,0);
214 BN_rand(b,sizes[i],1,0);
215 BN_rand(c,sizes[i],1,1);
219 BN_MONT_CTX_set(&m,c,ctx);
222 for (k=0; k<num; k++)
223 BN_mod_exp_mont(r,a,b,c,ctx,&m);
225 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);