bcal-performance.c

   1 /* bcal-performance.c */
   2 /*
   3     This file is part of the AVR-Crypto-Lib.
   4     Copyright (C) 2010 Daniel Otte (daniel.otte@rub.de)
   5
   6     This program is free software: you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation, either version 3 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 /*
  21  * \file    bcal-performance.c
  22  * \author  Daniel Otte
  23  * \email   daniel.otte@rub.de
  24  * \date    2010-02-16
  25  * \license GPLv3 or later
  26  *
  27  */
  28
  29 #include "bcal-performance.h"
  30 #include "keysize_descriptor.h"
  31 #include "blockcipher_descriptor.h"
  32 #include "performance_test.h"
  33 #include "cli.h"
  34 #include <stdint.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <avr/pgmspace.h>
  38
  39
  40
  41
  42 static
  43 void printvalue(unsigned long v){
  44         char str[20];
  45         int i;
  46         ultoa(v, str, 10);
  47         for(i=0; i<10-strlen(str); ++i){
  48                 cli_putc(' ');
  49         }
  50         cli_putstr(str);
  51 }
  52
  53 void bcal_performance(const bcdesc_t* bcd){
  54         bcdesc_t bc;
  55         memcpy_P(&bc, bcd, sizeof(bcdesc_t));
  56         uint8_t ctx[bc.ctxsize_B];
  57         uint8_t data[(bc.blocksize_b+7)/8];
  58         uint16_t keysize = get_keysize(bc.valid_keysize_desc);
  59         uint8_t key[(keysize+7)/8];
  60         uint64_t t;
  61         uint8_t i;
  62
  63         if(bc.type!=BCDESC_TYPE_BLOCKCIPHER)
  64                 return;
  65         calibrateTimer();
  66         print_overhead();
  67         cli_putstr_P(PSTR("\r\n\r\n === "));
  68         cli_putstr_P(bc.name);
  69         cli_putstr_P(PSTR(" performance === "
  70                           "\r\n    type:             blockcipher"
  71                           "\r\n    keysize (bits):     "));
  72         printvalue(keysize);
  73
  74         cli_putstr_P(PSTR("\r\n    ctxsize (bytes):    "));
  75         printvalue(bc.ctxsize_B);
  76
  77         cli_putstr_P(PSTR("\r\n    blocksize (bits):   "));
  78         printvalue(bc.blocksize_b);
  79
  80
  81
  82         t=0;
  83         if(bc.init.init1){
  84                 if((bc.flags&BC_INIT_TYPE)==BC_INIT_TYPE_1){
  85                         for(i=0; i<32; ++i){
  86                                 startTimer(0);
  87                                 START_TIMER;
  88                                 (bc.init.init1)(key, &ctx);
  89                                 STOP_TIMER;
  90                                 t += stopTimer();
  91                                 if(i!=31 && bc.free){
  92                                         bc.free(&ctx);
  93                                 }
  94                         }
  95                 } else {
  96                         for(i=0; i<32; ++i){
  97                                 startTimer(0);
  98                                 START_TIMER;
  99                                 (bc.init.init2)(key, keysize, &ctx);
 100                                 STOP_TIMER;
 101                                 t += stopTimer();
 102                                 if(i!=31 && bc.free){
 103                                         bc.free(&ctx);
 104                                 }
 105                         }
 106                 }
 107                 t>>=5;
 108                 cli_putstr_P(PSTR("\r\n    init (cycles):      "));
 109                 printvalue(t);
 110         }
 111         t=0;
 112         for(i=0; i<32; ++i){
 113                 startTimer(0);
 114                 START_TIMER;
 115                 bc.enc.enc1(data, &ctx);
 116                 STOP_TIMER;
 117                 t += stopTimer();
 118         }
 119         t>>=5;
 120         cli_putstr_P(PSTR("\r\n    encrypt (cycles):   "));
 121         printvalue(t);
 122
 123         t=0;
 124         for(i=0; i<32; ++i){
 125                 startTimer(0);
 126                 START_TIMER;
 127                 bc.dec.dec1(data, &ctx);
 128                 STOP_TIMER;
 129                 t += stopTimer();
 130         }
 131         t>>=5;
 132         cli_putstr_P(PSTR("\r\n    decrypt (cycles):   "));
 133         printvalue(t);
 134
 135         if(bc.free){
 136                 bc.free(&ctx);
 137         }
 138 }
 139
 140
 141 void bcal_performance_multiple(const bcdesc_t** bcd_list){
 142         const bcdesc_t* bcd;
 143         for(;;){
 144                 bcd = (void*)pgm_read_word(bcd_list);
 145                 if(!bcd){
 146                         cli_putstr_P(PSTR("\r\n\r\n End of performance figures\r\n"));
 147                         return;
 148                 }
 149                 bcal_performance(bcd);
 150                 bcd_list = (void*)((uint8_t*)bcd_list + 2);
 151         }
 152 }