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aestmr.c
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aestmr.c
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/*
---------------------------------------------------------------------------
Copyright (c) 1998-2013, Brian Gladman, Worcester, UK. All rights reserved.
The redistribution and use of this software (with or without changes)
is allowed without the payment of fees or royalties provided that:
source code distributions include the above copyright notice, this
list of conditions and the following disclaimer;
binary distributions include the above copyright notice, this list
of conditions and the following disclaimer in their documentation.
This software is provided 'as is' with no explicit or implied warranties
in respect of its operation, including, but not limited to, correctness
and fitness for purpose.
---------------------------------------------------------------------------
Issue Date: 20/12/2007
*/
/* Measure the Encryption, Decryption and Key Setup Times for AES using
the Pentium Time Stamp Counter */
#define DUAL_CORE
#if defined( DUAL_CORE ) || defined( DLL_IMPORT ) && defined( DYNAMIC_LINK )
# define WINDOWS_LEAN_AND_MEAN
# include <windows.h>
#endif
#include <string.h>
#include <math.h>
#if defined( __cplusplus )
# include "aescpp.h"
#else
# include "aes.h"
#endif
#include "aesaux.h"
#include "aestst.h"
#include "rdtsc.h"
#if defined( DLL_IMPORT ) && defined( DYNAMIC_LINK )
fn_ptrs fn;
#endif
#if defined( _M_IX86 )
#if _M_IX86 == 500
#define PROCESSOR "Pentium"
#elif _M_IX86 == 600
#define PROCESSOR "P2/P3/P4"
#else
#define PROCESSOR ""
#endif
#elif defined( _M_X64 )
#define PROCESSOR "AMD64/EMT64"
#else
#define PROCESSOR ""
#endif
const int loops = 100; // number of timing loops
#define SAMPLE1 1000
#define SAMPLE2 10000
int time_base(double *av, double *sig)
{ int i, tol, lcnt, sam_cnt;
double cy, av1, sig1;
tol = 10; lcnt = sam_cnt = 0;
while(!sam_cnt)
{
av1 = sig1 = 0.0;
for(i = 0; i < SAMPLE1; ++i)
{
cy = (double)read_tsc();
cy = (double)read_tsc() - cy;
av1 += cy;
sig1 += cy * cy;
}
av1 /= SAMPLE1;
sig1 = sqrt((sig1 - av1 * av1 * SAMPLE1) / SAMPLE1);
sig1 = (sig1 < 0.05 * av1 ? 0.05 * av1 : sig1);
*av = *sig = 0.0;
for(i = 0; i < SAMPLE2; ++i)
{
cy = (double)read_tsc();
cy = (double)read_tsc() - cy;
if(cy > av1 - sig1 && cy < av1 + sig1)
{
*av += cy;
*sig += cy * cy;
sam_cnt++;
}
}
if(10 * sam_cnt > 9 * SAMPLE2)
{
*av /= sam_cnt;
*sig = sqrt((*sig - *av * *av * sam_cnt) / sam_cnt);
if(*sig > (tol / 100.0) * *av)
sam_cnt = 0;
}
else
{
if(lcnt++ == 10)
{
lcnt = 0; tol += 5;
if(tol > 30)
return FALSE;
}
sam_cnt = 0;
}
}
return TRUE;
}
typedef unsigned long long (*aes_tmr)(void);
/* There is a compiler optimisation bug when optimisation is turned on
in Visual Studio 2005 for the following subroutine
*/
#if defined( _MSC_VER )
# pragma optimize( "", off )
#endif
int time_eks8(unsigned int k_len, double *av, double *sig)
{ int i, tol, lcnt, sam_cnt;
double cy, av1, sig1;
unsigned char key[8][2 * AES_BLOCK_SIZE];
f_ectx ec[1];
block_rndfill(key[0], 16 * AES_BLOCK_SIZE);
tol = 10; lcnt = sam_cnt = 0;
while(!sam_cnt)
{
av1 = sig1 = 0.0;
for(i = 0; i < SAMPLE1; ++i)
{
cy = (double)read_tsc();
f_enc_key(ec, key[0], k_len);
f_enc_key(ec, key[1], k_len);
f_enc_key(ec, key[2], k_len);
f_enc_key(ec, key[3], k_len);
f_enc_key(ec, key[4], k_len);
f_enc_key(ec, key[5], k_len);
f_enc_key(ec, key[6], k_len);
f_enc_key(ec, key[7], k_len);
cy = (double)read_tsc() - cy;
av1 += cy;
sig1 += cy * cy;
}
av1 /= SAMPLE1;
sig1 = sqrt((sig1 - av1 * av1 * SAMPLE1) / SAMPLE1);
sig1 = (sig1 < 0.05 * av1 ? 0.05 * av1 : sig1);
f_enc_key(ec, key[0], k_len);
*av = *sig = 0.0;
for(i = 0; i < SAMPLE2; ++i)
{
cy = (double)read_tsc();
f_enc_key(ec, key[0], k_len);
f_enc_key(ec, key[1], k_len);
f_enc_key(ec, key[2], k_len);
f_enc_key(ec, key[3], k_len);
f_enc_key(ec, key[4], k_len);
f_enc_key(ec, key[5], k_len);
f_enc_key(ec, key[6], k_len);
f_enc_key(ec, key[7], k_len);
cy = (double)read_tsc() - cy;
if(cy > av1 - sig1 && cy < av1 + sig1)
{
*av += cy;
*sig += cy * cy;
sam_cnt++;
}
}
if(10 * sam_cnt > 9 * SAMPLE2)
{
*av /= sam_cnt;
*sig = sqrt((*sig - *av * *av * sam_cnt) / sam_cnt);
if(*sig > (tol / 100.0) * *av)
sam_cnt = 0;
}
else
{
if(lcnt++ == 10)
{
lcnt = 0; tol += 5;
if(tol > 30)
return FALSE;
}
sam_cnt = 0;
}
}
return TRUE;
}
#if defined( _MSC_VER )
# pragma optimize( "", on )
#endif
int time_dks8(unsigned int k_len, double *av, double *sig)
{ int i, tol, lcnt, sam_cnt;
double cy, av1, sig1;
unsigned char key[8][2 * AES_BLOCK_SIZE];
f_dctx dc[1];
block_rndfill(key[0], 16 * AES_BLOCK_SIZE);
tol = 10; lcnt = sam_cnt = 0;
while(!sam_cnt)
{
av1 = sig1 = 0.0;
for(i = 0; i < SAMPLE1; ++i)
{
cy = (double)read_tsc();
f_dec_key(dc, key[ 0], k_len);
f_dec_key(dc, key[ 1], k_len);
f_dec_key(dc, key[ 2], k_len);
f_dec_key(dc, key[ 3], k_len);
f_dec_key(dc, key[ 4], k_len);
f_dec_key(dc, key[ 5], k_len);
f_dec_key(dc, key[ 6], k_len);
f_dec_key(dc, key[ 7], k_len);
cy = (double)read_tsc() - cy;
av1 += cy;
sig1 += cy * cy;
}
av1 /= SAMPLE1;
sig1 = sqrt((sig1 - av1 * av1 * SAMPLE1) / SAMPLE1);
sig1 = (sig1 < 0.05 * av1 ? 0.05 * av1 : sig1);
*av = *sig = 0.0;
for(i = 0; i < SAMPLE2; ++i)
{
cy = (double)read_tsc();
f_dec_key(dc, key[ 0], k_len);
f_dec_key(dc, key[ 1], k_len);
f_dec_key(dc, key[ 2], k_len);
f_dec_key(dc, key[ 3], k_len);
f_dec_key(dc, key[ 4], k_len);
f_dec_key(dc, key[ 5], k_len);
f_dec_key(dc, key[ 6], k_len);
f_dec_key(dc, key[ 7], k_len);
cy = (double)read_tsc() - cy;
if(cy > av1 - sig1 && cy < av1 + sig1)
{
*av += cy;
*sig += cy * cy;
sam_cnt++;
}
}
if(10 * sam_cnt > 9 * SAMPLE2)
{
*av /= sam_cnt;
*sig = sqrt((*sig - *av * *av * sam_cnt) / sam_cnt);
if(*sig > (tol / 100.0) * *av)
sam_cnt = 0;
}
else
{
if(lcnt++ == 10)
{
lcnt = 0; tol += 5;
if(tol > 30)
return FALSE;
}
sam_cnt = 0;
}
}
return TRUE;
}
int time_enc16(unsigned int k_len, double *av, double *sig)
{ int i, tol, lcnt, sam_cnt;
double cy, av1, sig1;
unsigned char key[2 * AES_BLOCK_SIZE], pt[4][4 * AES_BLOCK_SIZE];
f_ectx ec[1];
block_rndfill(key, 2 * AES_BLOCK_SIZE);
f_enc_key(ec, key, k_len);
block_rndfill(pt[0], 16 * AES_BLOCK_SIZE);
tol = 10; lcnt = sam_cnt = 0;
while(!sam_cnt)
{
av1 = sig1 = 0.0;
for(i = 0; i < SAMPLE1; ++i)
{
cy = (double)read_tsc();
do_enc(ec, pt[0], pt[0], 1);
do_enc(ec, pt[1], pt[1], 1);
do_enc(ec, pt[2], pt[2], 1);
do_enc(ec, pt[3], pt[3], 1);
do_enc(ec, pt[0], pt[0], 1);
do_enc(ec, pt[1], pt[1], 1);
do_enc(ec, pt[2], pt[2], 1);
do_enc(ec, pt[3], pt[3], 1);
do_enc(ec, pt[0], pt[0], 1);
do_enc(ec, pt[1], pt[1], 1);
do_enc(ec, pt[2], pt[2], 1);
do_enc(ec, pt[3], pt[3], 1);
do_enc(ec, pt[0], pt[0], 1);
do_enc(ec, pt[1], pt[1], 1);
do_enc(ec, pt[2], pt[2], 1);
do_enc(ec, pt[3], pt[3], 1);
cy = (double)read_tsc() - cy;
av1 += cy;
sig1 += cy * cy;
}
av1 /= SAMPLE1;
sig1 = sqrt((sig1 - av1 * av1 * SAMPLE1) / SAMPLE1);
sig1 = (sig1 < 0.05 * av1 ? 0.05 * av1 : sig1);
*av = *sig = 0.0;
for(i = 0; i < SAMPLE2; ++i)
{
cy = (double)read_tsc();
do_enc(ec, pt[0], pt[0], 1);
do_enc(ec, pt[1], pt[1], 1);
do_enc(ec, pt[2], pt[2], 1);
do_enc(ec, pt[3], pt[3], 1);
do_enc(ec, pt[0], pt[0], 1);
do_enc(ec, pt[1], pt[1], 1);
do_enc(ec, pt[2], pt[2], 1);
do_enc(ec, pt[3], pt[3], 1);
do_enc(ec, pt[0], pt[0], 1);
do_enc(ec, pt[1], pt[1], 1);
do_enc(ec, pt[2], pt[2], 1);
do_enc(ec, pt[3], pt[3], 1);
do_enc(ec, pt[0], pt[0], 1);
do_enc(ec, pt[1], pt[1], 1);
do_enc(ec, pt[2], pt[2], 1);
do_enc(ec, pt[3], pt[3], 1);
cy = (double)read_tsc() - cy;
if(cy > av1 - sig1 && cy < av1 + sig1)
{
*av += cy;
*sig += cy * cy;
sam_cnt++;
}
}
if(10 * sam_cnt > 9 * SAMPLE2)
{
*av /= sam_cnt;
*sig = sqrt((*sig - *av * *av * sam_cnt) / sam_cnt);
if(*sig > (tol / 100.0) * *av)
sam_cnt = 0;
}
else
{
if(lcnt++ == 10)
{
lcnt = 0; tol += 5;
if(tol > 30)
return FALSE;
}
sam_cnt = 0;
}
}
return TRUE;
}
int time_dec16(unsigned int k_len, double *av, double *sig)
{ int i, tol, lcnt, sam_cnt;
double cy, av1, sig1;
unsigned char key[2 * AES_BLOCK_SIZE], pt[4][4 * AES_BLOCK_SIZE];
f_dctx dc[1];
block_rndfill(key, 2 * AES_BLOCK_SIZE);
f_dec_key(dc, key, k_len);
block_rndfill(pt[0], 16 * AES_BLOCK_SIZE);
tol = 10; lcnt = sam_cnt = 0;
while(!sam_cnt)
{
av1 = sig1 = 0.0;
for(i = 0; i < SAMPLE1; ++i)
{
cy = (double)read_tsc();
do_dec(dc, pt[0], pt[0], 1);
do_dec(dc, pt[1], pt[1], 1);
do_dec(dc, pt[2], pt[2], 1);
do_dec(dc, pt[3], pt[3], 1);
do_dec(dc, pt[0], pt[0], 1);
do_dec(dc, pt[1], pt[1], 1);
do_dec(dc, pt[2], pt[2], 1);
do_dec(dc, pt[3], pt[3], 1);
do_dec(dc, pt[0], pt[0], 1);
do_dec(dc, pt[1], pt[1], 1);
do_dec(dc, pt[2], pt[2], 1);
do_dec(dc, pt[3], pt[3], 1);
do_dec(dc, pt[0], pt[0], 1);
do_dec(dc, pt[1], pt[1], 1);
do_dec(dc, pt[2], pt[2], 1);
do_dec(dc, pt[3], pt[3], 1);
cy = (double)read_tsc() - cy;
av1 += cy;
sig1 += cy * cy;
}
av1 /= SAMPLE1;
sig1 = sqrt((sig1 - av1 * av1 * SAMPLE1) / SAMPLE1);
sig1 = (sig1 < 0.05 * av1 ? 0.05 * av1 : sig1);
*av = *sig = 0.0;
for(i = 0; i < SAMPLE2; ++i)
{
cy = (double)read_tsc();
do_dec(dc, pt[0], pt[0], 1);
do_dec(dc, pt[1], pt[1], 1);
do_dec(dc, pt[2], pt[2], 1);
do_dec(dc, pt[3], pt[3], 1);
do_dec(dc, pt[0], pt[0], 1);
do_dec(dc, pt[1], pt[1], 1);
do_dec(dc, pt[2], pt[2], 1);
do_dec(dc, pt[3], pt[3], 1);
do_dec(dc, pt[0], pt[0], 1);
do_dec(dc, pt[1], pt[1], 1);
do_dec(dc, pt[2], pt[2], 1);
do_dec(dc, pt[3], pt[3], 1);
do_dec(dc, pt[0], pt[0], 1);
do_dec(dc, pt[1], pt[1], 1);
do_dec(dc, pt[2], pt[2], 1);
do_dec(dc, pt[3], pt[3], 1);
cy = (double)read_tsc() - cy;
if(cy > av1 - sig1 && cy < av1 + sig1)
{
*av += cy;
*sig += cy * cy;
sam_cnt++;
}
}
if(10 * sam_cnt > 9 * SAMPLE2)
{
*av /= sam_cnt;
*sig = sqrt((*sig - *av * *av * sam_cnt) / sam_cnt);
if(*sig > (tol / 100.0) * *av)
sam_cnt = 0;
}
else
{
if(lcnt++ == 10)
{
lcnt = 0; tol += 5;
if(tol > 30)
return FALSE;
}
sam_cnt = 0;
}
}
return TRUE;
}
// measure cycles for an encryption call
double e_cycles(const unsigned long klen, f_ectx alg[1])
{ unsigned char pt[16], ct[16], key[32];
double cy1, cy2, c1 = -1, c2 = -1;
int i;
// set up a random key of 256 bits
block_rndfill(key, 32);
// set up a random plain text
block_rndfill(pt, 16);
// do a set_key in case it is necessary
f_enc_key(alg, key, klen); c1 = c2 = 0xffffffff;
// do an encrypt to remove any 'first time through' effects
do_enc(alg, pt, ct, 1);
for(i = 0; i < loops; ++i)
{
block_rndfill(pt, 16);
// time 1 and 9 encryptions - subtract to get cost of 8
cy1 = (double)read_tsc();
do_enc(alg, ct, ct, 1);
cy1 = (double)read_tsc() - cy1;
cy2 = (double)read_tsc();
do_enc(alg, ct, ct, 1);
do_enc(alg, ct, ct, 1);
do_enc(alg, ct, ct, 1);
do_enc(alg, ct, ct, 1);
do_enc(alg, ct, ct, 1);
do_enc(alg, ct, ct, 1);
do_enc(alg, ct, ct, 1);
do_enc(alg, ct, ct, 1);
do_enc(alg, ct, ct, 1);
cy2 = (double)read_tsc() - cy2;
if(i > loops / 10)
{
c1 = (c1 < cy1 ? c1 : cy1); // find minimum values over the loops
c2 = (c2 < cy2 ? c2 : cy2);
}
}
return ((c2 - c1) + 4.0) / 8.0;
}
// measure cycles for a decryption call
double d_cycles(const unsigned long klen, f_dctx alg[1])
{ unsigned char pt[16], ct[16], key[32];
double cy1, cy2, c1 = -1, c2 = -1;
int i;
// set up a random key of 256 bits
block_rndfill(key, 32);
// set up a random plain text
block_rndfill(pt, 16);
// do a set_key in case it is necessary
f_dec_key(alg, key, klen); c1 = c2 = 0xffffffff;
// do an decrypt to remove any 'first time through' effects
do_dec(alg, pt, ct, 1);
for(i = 0; i < loops; ++i)
{
block_rndfill(pt, 16);
// time 1 and 9 decryptions - subtract to get cost of 8
cy1 = (double)read_tsc();
do_dec(alg, ct, ct, 1);
cy1 = (double)read_tsc() - cy1;
cy2 = (double)read_tsc();
do_dec(alg, ct, ct, 1);
do_dec(alg, ct, ct, 1);
do_dec(alg, ct, ct, 1);
do_dec(alg, ct, ct, 1);
do_dec(alg, ct, ct, 1);
do_dec(alg, ct, ct, 1);
do_dec(alg, ct, ct, 1);
do_dec(alg, ct, ct, 1);
do_dec(alg, ct, ct, 1);
cy2 = (double)read_tsc() - cy2;
if(i > loops / 10)
{
c1 = (c1 < cy1 ? c1 : cy1); // find minimum values over the loops
c2 = (c2 < cy2 ? c2 : cy2);
}
}
return ((c2 - c1) + 4.0) / 8.0;
}
// measure cycles for an encryption key setup
double ke_cycles(const unsigned long klen, f_ectx alg[1])
{ unsigned char key[32];
double cy1, cy2, c1 = -1, c2 = -1;
int i;
// set up a random key of 256 bits
block_rndfill(key, 32);
// do an set_key to remove any 'first time through' effects
f_enc_key(alg, key, klen); c1 = c2 = 0xffffffff;
switch(klen)
{
case 16:
for(i = 0; i < loops; ++i)
{
// time 1 and 5 encryption key schedules - subtract to get cost of 4
cy1 = (double)read_tsc();
f_enc_key(alg, key + 10 * AES_BLOCK_SIZE, 128);
cy1 = (double)read_tsc() - cy1;
cy2 = (double)read_tsc();
f_enc_key(alg, key + 10 * AES_BLOCK_SIZE, 128);
f_enc_key(alg, key + 10 * AES_BLOCK_SIZE, 128);
f_enc_key(alg, key + 10 * AES_BLOCK_SIZE, 128);
f_enc_key(alg, key + 10 * AES_BLOCK_SIZE, 128);
f_enc_key(alg, key + 10 * AES_BLOCK_SIZE, 128);
cy2 = (double)read_tsc() - cy2;
if(i > loops / 10)
{
c1 = (c1 < cy1 ? c1 : cy1); // find minimum values over the loops
c2 = (c2 < cy2 ? c2 : cy2);
}
}
break;
case 24:
for(i = 0; i < loops; ++i)
{
// time 1 and 5 encryption key schedules - subtract to get cost of 4
cy1 = (double)read_tsc();
f_enc_key(alg, key + 23 * (AES_BLOCK_SIZE / 2), 192);
cy1 = (double)read_tsc() - cy1;
cy2 = (double)read_tsc();
f_enc_key(alg, key + 23 * (AES_BLOCK_SIZE / 2), 192);
f_enc_key(alg, key + 23 * (AES_BLOCK_SIZE / 2), 192);
f_enc_key(alg, key + 23 * (AES_BLOCK_SIZE / 2), 192);
f_enc_key(alg, key + 23 * (AES_BLOCK_SIZE / 2), 192);
f_enc_key(alg, key + 23 * (AES_BLOCK_SIZE / 2), 192);
cy2 = (double)read_tsc() - cy2;
if(i > loops / 10)
{
c1 = (c1 < cy1 ? c1 : cy1); // find minimum values over the loops
c2 = (c2 < cy2 ? c2 : cy2);
}
}
break;
case 32:
for(i = 0; i < loops; ++i)
{
// time 1 and 5 encryption key schedules - subtract to get cost of 4
cy1 = (double)read_tsc();
f_enc_key(alg, key + 13 * AES_BLOCK_SIZE, 256);
cy1 = (double)read_tsc() - cy1;
cy2 = (double)read_tsc();
f_enc_key(alg, key + 13 * AES_BLOCK_SIZE, 256);
f_enc_key(alg, key + 13 * AES_BLOCK_SIZE, 256);
f_enc_key(alg, key + 13 * AES_BLOCK_SIZE, 256);
f_enc_key(alg, key + 13 * AES_BLOCK_SIZE, 256);
f_enc_key(alg, key + 13 * AES_BLOCK_SIZE, 256);
cy2 = (double)read_tsc() - cy2;
if(i > loops / 10)
{
c1 = (c1 < cy1 ? c1 : cy1); // find minimum values over the loops
c2 = (c2 < cy2 ? c2 : cy2);
}
}
break;
}
return ((c2 - c1) + 2.0) / 4.0;
}
// measure cycles for an encryption key setup
double kd_cycles(const unsigned long klen, f_dctx alg[1])
{ unsigned char key[32];
double cy1, cy2, c1 = -1, c2 = -1;
int i;
// set up a random key of 256 bits
block_rndfill(key, 32);
// do an set_key to remove any 'first time through' effects
f_dec_key(alg, key, klen); c1 = c2 = 0xffffffff;
switch(klen)
{
case 16:
for(i = 0; i < loops; ++i)
{
// time 1 and 5 decryption key schedules - subtract to get cost of 4
cy1 = (double)read_tsc();
f_dec_key(alg, key + 10 * AES_BLOCK_SIZE, 128);
cy1 = (double)read_tsc() - cy1;
cy2 = (double)read_tsc();
f_dec_key(alg, key + 10 * AES_BLOCK_SIZE, 128);
f_dec_key(alg, key + 10 * AES_BLOCK_SIZE, 128);
f_dec_key(alg, key + 10 * AES_BLOCK_SIZE, 128);
f_dec_key(alg, key + 10 * AES_BLOCK_SIZE, 128);
f_dec_key(alg, key + 10 * AES_BLOCK_SIZE, 128);
cy2 = (double)read_tsc() - cy2;
if(i > loops / 10)
{
c1 = (c1 < cy1 ? c1 : cy1); // find minimum values over the loops
c2 = (c2 < cy2 ? c2 : cy2);
}
}
break;
case 24:
for(i = 0; i < loops; ++i)
{
// time 1 and 5 decryption key schedules - subtract to get cost of 4
cy1 = (double)read_tsc();
f_dec_key(alg, key + 23 * (AES_BLOCK_SIZE / 2), 192);
cy1 = (double)read_tsc() - cy1;
cy2 = (double)read_tsc();
f_dec_key(alg, key + 23 * (AES_BLOCK_SIZE / 2), 192);
f_dec_key(alg, key + 23 * (AES_BLOCK_SIZE / 2), 192);
f_dec_key(alg, key + 23 * (AES_BLOCK_SIZE / 2), 192);
f_dec_key(alg, key + 23 * (AES_BLOCK_SIZE / 2), 192);
f_dec_key(alg, key + 23 * (AES_BLOCK_SIZE / 2), 192);
cy2 = (double)read_tsc() - cy2;
if(i > loops / 10)
{
c1 = (c1 < cy1 ? c1 : cy1); // find minimum values over the loops
c2 = (c2 < cy2 ? c2 : cy2);
}
}
break;
case 32:
for(i = 0; i < loops; ++i)
{
// time 1 and 5 decryption key schedules - subtract to get cost of 4
cy1 = (double)read_tsc();
f_dec_key(alg, key + 13 * AES_BLOCK_SIZE, 256);
cy1 = (double)read_tsc() - cy1;
cy2 = (double)read_tsc();
f_dec_key(alg, key + 13 * AES_BLOCK_SIZE, 256);
f_dec_key(alg, key + 13 * AES_BLOCK_SIZE, 256);
f_dec_key(alg, key + 13 * AES_BLOCK_SIZE, 256);
f_dec_key(alg, key + 13 * AES_BLOCK_SIZE, 256);
f_dec_key(alg, key + 13 * AES_BLOCK_SIZE, 256);
cy2 = (double)read_tsc() - cy2;
if(i > loops / 10)
{
c1 = (c1 < cy1 ? c1 : cy1); // find minimum values over the loops
c2 = (c2 < cy2 ? c2 : cy2);
}
}
break;
}
return ((c2 - c1) + 2.0) / 4.0;
}
static unsigned long kl[3] = { 16, 24, 32 };
static double ekt[3], dkt[3], et[3], dt[3];
void output(FILE *outf, const unsigned long inx, const unsigned long bits)
{ unsigned long t;
unsigned char c0, c1, c2;
fprintf(outf, "\n// %i Bit: ", 8 * kl[inx]);
fprintf(outf, " Key Setup: %i/%i cycles", ekt[inx], dkt[inx]);
t = (unsigned long)((1000 * bits + et[inx] / 2) / et[inx]);
c0 = (unsigned char)('0' + t / 100);
c1 = (unsigned char)('0' + (t / 10) % 10);
c2 = (unsigned char)('0' + t % 10);
fprintf(outf, "\n// Encrypt: %i cycles = 0.%c%c%c bits/cycle", et[inx], c0, c1 , c2);
t = (unsigned long)((1000 * bits + dt[inx] / 2) / dt[inx]);
c0 = (unsigned char)('0' + t / 100);
c1 = (unsigned char)('0' + (t / 10) % 10);
c2 = (unsigned char)('0' + t % 10);
fprintf(outf, "\n// Decrypt: %i cycles = 0.%c%c%c bits/cycle", dt[inx], c0, c1 , c2);
}
#if defined( _WIN64 )
#define CurrentProcessorNumber GetCurrentProcessorNumber
#else
unsigned long CurrentProcessorNumber(void)
{
__asm
{
mov eax,1
cpuid
shr ebx,24
mov eax, ebx
}
}
#endif
int main(int argc, char *argv[])
{ FILE *outf;
f_ectx alge[1];
f_dctx algd[1];
double a0, av, sig;
int ki, i, w;
#if defined( DLL_IMPORT ) && defined( DYNAMIC_LINK )
HINSTANCE h_dll;
#endif
#if defined( DUAL_CORE ) && defined( _WIN32 )
// we need to constrain the process to one core in order to
// obtain meaningful timing data
HANDLE ph;
DWORD_PTR afp;
DWORD_PTR afs;
ph = GetCurrentProcess();
if(GetProcessAffinityMask(ph, &afp, &afs))
{
afp &= (1 << CurrentProcessorNumber());
if(!SetProcessAffinityMask(ph, afp))
{
printf("Couldn't set Process Affinity Mask\n\n"); return -1;
}
}
else
{
printf("Couldn't get Process Affinity Mask\n\n"); return -1;
}
#endif
#if defined( DLL_IMPORT ) && defined( DYNAMIC_LINK )
if(!(h_dll = init_dll(&fn)))
return -1;
#else
aes_init();
#endif
memset(&alge, 0, sizeof(aes_encrypt_ctx));
memset(&algd, 0, sizeof(aes_decrypt_ctx));
if(fopen_s(&outf, argc == 2 ? argv[1] : "CON", "w"))
{
printf("\nCannot open %s for output\n", argc == 2 ? argv[1] : "CON");
return -1;
}
printf("\n// AES%s Timing For The %s Processor",
#if defined( DLL_IMPORT ) && defined( __cplusplus )
" (DLL & CPP)",
#elif defined( DLL_IMPORT )
" (DLL)",
#elif defined( __cplusplus )
" (CPP)",
#else
"",
#endif
PROCESSOR);
for(ki = 0; ki < 3; ++ki)
{
ekt[ki] = ke_cycles(kl[ki], alge);
dkt[ki] = kd_cycles(kl[ki], algd);
et[ki] = e_cycles(kl[ki], alge);
dt[ki] = d_cycles(kl[ki], algd);
}
fprintf(outf, "\n// KeySize EKS(cycles) ENC(cycles/byte) DKS(cycles) DEC(cycles/byte)");
for(i = 0; i < 3; ++i)
{
av = et[i] / 16.0; w = (int)(10.0 * av + 0.5);
fprintf(outf, "\n// min(%03i) %14.1f%16i.%1i", 128 + 64 * i, ekt[i], w / 10, w % 10);
av = dt[i] / 16.0; w = (int)(10.0 * av + 0.5);;
fprintf(outf, "%15.1f%16i.%1i", dkt[i], w / 10, w % 10);
}
time_base(&a0, &sig);
for(i = 128; i <= 256; i += 64)
{
fprintf(outf, "\n// avg(%3i) ", i);
time_eks8(i, &av, &sig);
sig *= 100.0 / av;
av = ((av - a0 + 4.0) / 8.0);
fprintf(outf, "%6.0f (%4.1f%%)", av, sig);
time_enc16(i, &av, &sig);
sig *= 100.0 / av;
av = (int)(10.0 * (av - a0) / 256.0) / 10.0;
sig = (int)(10 * sig) / 10.0;
fprintf(outf, "%10.1f (%4.1f%%)", av, sig);
time_dks8(i, &av, &sig);
sig *= 100.0 / av;
av = (int)((av - a0 + 4.0) / 8.0);
fprintf(outf, "%7.0f (%4.1f%%)", av, sig);
time_dec16(i, &av, &sig);
sig *= 100.0 / av;
av = (int)(10.0 * (av - a0) / 256.0) / 10.0;
sig = (int)(10 * sig) / 10.0;
fprintf(outf, "%10.1f (%4.1f%%)", av, sig);
}
#if defined( DLL_IMPORT ) && defined( DYNAMIC_LINK )
if(h_dll) FreeLibrary(h_dll);
#endif
fprintf(outf, "\n\n");
return 0;
}