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Diffstat (limited to '')
| -rw-r--r-- | src/benchmark.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/src/benchmark.c b/src/benchmark.c new file mode 100644 index 0000000..119f6ed --- /dev/null +++ b/src/benchmark.c @@ -0,0 +1,152 @@ +/** + * libkeccak – Keccak-family hashing library + * + * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org) + * + * 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> + + +#define MESSAGE_LEN 34520 /* The size of the file LICENSE. */ +#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 + * convertion 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]; + char hexsum[OUTPUT / 8 * 2 + 1]; + struct timespec start, end; + long i, r; + + /* Fill message with connent from the file LICENSE. */ + { + int fd; + ssize_t got; + size_t ptr; + if (fd = open("LICENSE", 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_MONOTONIC_RAW, &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_update(&state, message, MESSAGE_LEN) < 0) + return perror("libkeccak_update"), 1; +#endif + + /* Digest. */ + if (libkeccak_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_MONOTONIC_RAW, &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 (FAST_SQUEEZE_RUNS == 0) && (SLOW_SQUEEZE_RUNS == 0) + (void) i; +#endif +} + |