aboutsummaryrefslogtreecommitdiffstats
path: root/src/benchmark.c
blob: 115fcc572ea1e11aa439383920c0421eb0b75f52 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
/**
 * libkeccak – Keccak-family hashing library
 * 
 * Copyright © 2014, 2015, 2017  Mattias Andrée (maandree@kth.se)
 * 
 * This library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this library.  If not, see <http://www.gnu.org/licenses/>.
 */
#include <libkeccak.h>

#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <time.h>


#ifndef MESSAGE_FILE
# define MESSAGE_FILE     "LICENSE"
#endif
#ifndef MESSAGE_LEN
# define MESSAGE_LEN      34520
#endif


#ifndef BITRATE
# define BITRATE           1024
#endif
#ifndef CAPACITY
# define CAPACITY           576
#endif
#ifndef OUTPUT
# define OUTPUT             512
#endif

#ifndef UPDATE_RUNS
# define UPDATE_RUNS        100
#endif
#ifndef FAST_SQUEEZE_RUNS
# define FAST_SQUEEZE_RUNS  100
#endif
#ifndef SLOW_SQUEEZE_RUNS
# define SLOW_SQUEEZE_RUNS  100
#endif
#ifndef RERUNS
# define RERUNS              50
#endif



/**
 * Benchmark, will print the number of nanoseconds
 * spent with hashing algorithms and representation
 * conversion from binary to hexadecimal. The latter
 * can be compiled out by compiling with -DIGNORE_BEHEXING.
 * 
 * @return  Zero on success, 1 on error
 */
int main(void)
{
  char message[MESSAGE_LEN];
  libkeccak_spec_t spec;
  libkeccak_state_t state;
  char hashsum[OUTPUT / 8];
#ifndef IGNORE_BEHEXING
  char hexsum[OUTPUT / 8 * 2 + 1];
#endif
  struct timespec start, end;
  long i, r;
  
  /* Fill message with content from the file. */
  {
    int fd;
    ssize_t got;
    size_t ptr;
    if (fd = open(MESSAGE_FILE, O_RDONLY), fd < 0)
      return perror("open"), 1;
    for (ptr = 0; ptr < MESSAGE_LEN; ptr += (size_t)got)
      if (got = read(fd, message, MESSAGE_LEN - ptr), got <= 0)
	return perror("read"), close(fd), 1;
    close(fd);
  }
  
  /* Initialise state. */
  spec.bitrate = BITRATE;
  spec.capacity = CAPACITY;
  spec.output = OUTPUT;
  if (libkeccak_state_initialise(&state, &spec))
    return perror("libkeccak_state_initialise"), 1;
  
  /* Get start-time. */
  if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &start) < 0)
    return perror("clock_gettime"), 1;
  
  /* Run benchmarking loop. */
  for (r = 0; r < RERUNS; r++)
    {
      /* Updates. */
#if UPDATE_RUNS > 0
      for (i = 0; i < UPDATE_RUNS; i++)
	if (libkeccak_fast_update(&state, message, MESSAGE_LEN) < 0)
	  return perror("libkeccak_update"), 1;
#endif
      
      /* Digest. */
      if (libkeccak_fast_digest(&state, NULL, 0, 0, NULL, hashsum) < 0)
	return perror("libkeccak_digest"), 1;
#ifndef IGNORE_BEHEXING
      libkeccak_behex_lower(hexsum, hashsum, OUTPUT / 8);
#endif
      
      /* Fast squeezes. */
#if FAST_SQUEEZE_RUNS > 0
      libkeccak_fast_squeeze(&state, FAST_SQUEEZE_RUNS);
#endif
      
      /* Slow squeezes. */
#if SLOW_SQUEEZE_RUNS > 0
      for (i = 0; i < SLOW_SQUEEZE_RUNS; i++)
	{
	  libkeccak_squeeze(&state, hashsum);
# ifndef IGNORE_BEHEXING
	  libkeccak_behex_lower(hexsum, hashsum, OUTPUT / 8);
# endif
	}
#endif
    }
  
  /* Get end-time. */
  if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &end) < 0)
    return perror("clock_gettime"), -1;
  
  /* Print execution-time. */
  end.tv_sec -= start.tv_sec;
  end.tv_nsec -= start.tv_nsec;
  if (end.tv_nsec < 0)
    {
      end.tv_sec--;
      end.tv_nsec += 1000000000L;
    }
  printf("%03li%09li\n", (long)(end.tv_sec), end.tv_nsec);
  
  /* Release resources and exit. */
  libkeccak_state_fast_destroy(&state);
  return 0;
  
#if (UPDATE_RUNS == 0) && (SLOW_SQUEEZE_RUNS == 0)
  (void) i;
#endif
}