aboutsummaryrefslogtreecommitdiffstats
path: root/tools/crypto_bench.c
blob: 203bffe19832866451d76c1ee363a33414e6647e (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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
/*
 * Copyright (c) 2013 Nicolas George
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with FFmpeg; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/* Optional external libraries; can be enabled using:
 * make VERSUS=crypto+gcrypt+tomcrypt tools/crypto_bench */
#define USE_crypto           0x01    /* OpenSSL's libcrypto */
#define USE_gcrypt           0x02    /* GnuTLS's libgcrypt */
#define USE_tomcrypt         0x04    /* LibTomCrypt */

#include <stdlib.h>
#include <math.h>

#include "libavutil/avutil.h"
#include "libavutil/avstring.h"
#include "libavutil/crc.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/timer.h"

#ifndef AV_READ_TIME
#define AV_READ_TIME(x) 0
#endif

#if HAVE_UNISTD_H
#include <unistd.h> /* for getopt */
#endif
#if !HAVE_GETOPT
#include "compat/getopt.c"
#endif

#define MAX_INPUT_SIZE 1048576
#define MAX_OUTPUT_SIZE 128

static const char *enabled_libs;
static const char *enabled_algos;
static unsigned specified_runs;

static const uint8_t *hardcoded_key = "FFmpeg is the best program ever.";

static void fatal_error(const char *tag)
{
    av_log(NULL, AV_LOG_ERROR, "Fatal error: %s\n", tag);
    exit(1);
}

struct hash_impl {
    const char *lib;
    const char *name;
    void (*run)(uint8_t *output, const uint8_t *input, unsigned size);
    const char *output;
};

/***************************************************************************
 * lavu: libavutil
 ***************************************************************************/

#include "libavutil/md5.h"
#include "libavutil/sha.h"
#include "libavutil/sha512.h"
#include "libavutil/ripemd.h"
#include "libavutil/aes.h"
#include "libavutil/blowfish.h"
#include "libavutil/camellia.h"
#include "libavutil/cast5.h"
#include "libavutil/des.h"
#include "libavutil/twofish.h"
#include "libavutil/rc4.h"
#include "libavutil/xtea.h"

#define IMPL_USE_lavu IMPL_USE

static void run_lavu_md5(uint8_t *output,
                         const uint8_t *input, unsigned size)
{
    av_md5_sum(output, input, size);
}

#define DEFINE_LAVU_MD(suffix, type, namespace, hsize)                       \
static void run_lavu_ ## suffix(uint8_t *output,                             \
                                const uint8_t *input, unsigned size)         \
{                                                                            \
    static struct type *h;                                                   \
    if (!h && !(h = av_ ## namespace ## _alloc()))                           \
        fatal_error("out of memory");                                        \
    av_ ## namespace ## _init(h, hsize);                                     \
    av_ ## namespace ## _update(h, input, size);                             \
    av_ ## namespace ## _final(h, output);                                   \
}

DEFINE_LAVU_MD(sha1,      AVSHA,    sha, 160);
DEFINE_LAVU_MD(sha256,    AVSHA,    sha, 256);
DEFINE_LAVU_MD(sha512,    AVSHA512, sha512, 512);
DEFINE_LAVU_MD(ripemd128, AVRIPEMD, ripemd, 128);
DEFINE_LAVU_MD(ripemd160, AVRIPEMD, ripemd, 160);

static void run_lavu_aes128(uint8_t *output,
                            const uint8_t *input, unsigned size)
{
    static struct AVAES *aes;
    if (!aes && !(aes = av_aes_alloc()))
        fatal_error("out of memory");
    av_aes_init(aes, hardcoded_key, 128, 0);
    av_aes_crypt(aes, output, input, size >> 4, NULL, 0);
}

static void run_lavu_blowfish(uint8_t *output,
                              const uint8_t *input, unsigned size)
{
    static struct AVBlowfish *blowfish;
    if (!blowfish && !(blowfish = av_blowfish_alloc()))
        fatal_error("out of memory");
    av_blowfish_init(blowfish, hardcoded_key, 16);
    av_blowfish_crypt(blowfish, output, input, size >> 3, NULL, 0);
}

static void run_lavu_camellia(uint8_t *output,
                              const uint8_t *input, unsigned size)
{
    static struct AVCAMELLIA *camellia;
    if (!camellia && !(camellia = av_camellia_alloc()))
        fatal_error("out of memory");
    av_camellia_init(camellia, hardcoded_key, 128);
    av_camellia_crypt(camellia, output, input, size >> 4, NULL, 0);
}

static void run_lavu_cast128(uint8_t *output,
                             const uint8_t *input, unsigned size)
{
    static struct AVCAST5 *cast;
    if (!cast && !(cast = av_cast5_alloc()))
        fatal_error("out of memory");
    av_cast5_init(cast, hardcoded_key, 128);
    av_cast5_crypt(cast, output, input, size >> 3, 0);
}

static void run_lavu_des(uint8_t *output,
                              const uint8_t *input, unsigned size)
{
    static struct AVDES *des;
    if (!des && !(des = av_des_alloc()))
        fatal_error("out of memory");
    av_des_init(des, hardcoded_key, 64, 0);
    av_des_crypt(des, output, input, size >> 3, NULL, 0);
}

static void run_lavu_twofish(uint8_t *output,
                              const uint8_t *input, unsigned size)
{
    static struct AVTWOFISH *twofish;
    if (!twofish && !(twofish = av_twofish_alloc()))
        fatal_error("out of memory");
    av_twofish_init(twofish, hardcoded_key, 128);
    av_twofish_crypt(twofish, output, input, size >> 4, NULL, 0);
}

static void run_lavu_rc4(uint8_t *output,
                              const uint8_t *input, unsigned size)
{
    static struct AVRC4 *rc4;
    if (!rc4 && !(rc4 = av_rc4_alloc()))
        fatal_error("out of memory");
    av_rc4_init(rc4, hardcoded_key, 128, 0);
    av_rc4_crypt(rc4, output, input, size, NULL, 0);
}

static void run_lavu_xtea(uint8_t *output,
                              const uint8_t *input, unsigned size)
{
    static struct AVXTEA *xtea;
    if (!xtea && !(xtea = av_xtea_alloc()))
        fatal_error("out of memory");
    av_xtea_init(xtea, hardcoded_key);
    av_xtea_crypt(xtea, output, input, size >> 3, NULL, 0);
}

/***************************************************************************
 * crypto: OpenSSL's libcrypto
 ***************************************************************************/

#if (USE_EXT_LIBS) & USE_crypto

#define OPENSSL_DISABLE_OLD_DES_SUPPORT
#include <openssl/md5.h>
#include <openssl/sha.h>
#include <openssl/ripemd.h>
#include <openssl/aes.h>
#include <openssl/blowfish.h>
#include <openssl/camellia.h>
#include <openssl/cast.h>
#include <openssl/des.h>
#include <openssl/rc4.h>

#define DEFINE_CRYPTO_WRAPPER(suffix, function)                              \
static void run_crypto_ ## suffix(uint8_t *output,                           \
                                  const uint8_t *input, unsigned size)       \
{                                                                            \
    function(input, size, output);                                           \
}

DEFINE_CRYPTO_WRAPPER(md5,       MD5)
DEFINE_CRYPTO_WRAPPER(sha1,      SHA1)
DEFINE_CRYPTO_WRAPPER(sha256,    SHA256)
DEFINE_CRYPTO_WRAPPER(sha512,    SHA512)
DEFINE_CRYPTO_WRAPPER(ripemd160, RIPEMD160)

static void run_crypto_aes128(uint8_t *output,
                              const uint8_t *input, unsigned size)
{
    AES_KEY aes;
    unsigned i;

    AES_set_encrypt_key(hardcoded_key, 128, &aes);
    size -= 15;
    for (i = 0; i < size; i += 16)
        AES_encrypt(input + i, output + i, &aes);
}

static void run_crypto_blowfish(uint8_t *output,
                                const uint8_t *input, unsigned size)
{
    BF_KEY blowfish;
    unsigned i;

    BF_set_key(&blowfish, 16, hardcoded_key);
    for (i = 0; i < size; i += 8)
        BF_ecb_encrypt(input + i, output + i, &blowfish, 1);
}

static void run_crypto_camellia(uint8_t *output,
                                const uint8_t *input, unsigned size)
{
    CAMELLIA_KEY camellia;
    unsigned i;

    Camellia_set_key(hardcoded_key, 128, &camellia);
    size -= 15;
    for (i = 0; i < size; i += 16)
        Camellia_ecb_encrypt(input + i, output + i, &camellia, 1);
}

static void run_crypto_cast128(uint8_t *output,
                               const uint8_t *input, unsigned size)
{
    CAST_KEY cast;
    unsigned i;

    CAST_set_key(&cast, 16, hardcoded_key);
    for (i = 0; i < size; i += 8)
        CAST_ecb_encrypt(input + i, output + i, &cast, 1);
}

static void run_crypto_des(uint8_t *output,
                           const uint8_t *input, unsigned size)
{
    DES_key_schedule des;
    unsigned i;

    DES_set_key(hardcoded_key, &des);
    for (i = 0; i < size; i += 8)
        DES_ecb_encrypt(input + i, output + i, &des, 1);
}

static void run_crypto_rc4(uint8_t *output,
                                const uint8_t *input, unsigned size)
{
    RC4_KEY rc4;

    RC4_set_key(&rc4, 16, hardcoded_key);
    RC4(&rc4, size, input, output);
}

#define IMPL_USE_crypto(...) IMPL_USE(__VA_ARGS__)
#else
#define IMPL_USE_crypto(...) /* ignore */
#endif

/***************************************************************************
 * gcrypt: GnuTLS's libgcrypt
 ***************************************************************************/

#if (USE_EXT_LIBS) & USE_gcrypt

#include <gcrypt.h>

#define DEFINE_GCRYPT_WRAPPER(suffix, algo)                                  \
static void run_gcrypt_ ## suffix(uint8_t *output,                           \
                                  const uint8_t *input, unsigned size)       \
{                                                                            \
    gcry_md_hash_buffer(GCRY_MD_ ## algo, output, input, size);              \
}

DEFINE_GCRYPT_WRAPPER(md5,       MD5)
DEFINE_GCRYPT_WRAPPER(sha1,      SHA1)
DEFINE_GCRYPT_WRAPPER(sha256,    SHA256)
DEFINE_GCRYPT_WRAPPER(sha512,    SHA512)
DEFINE_GCRYPT_WRAPPER(ripemd160, RMD160)

#define DEFINE_GCRYPT_CYPHER_WRAPPER(suffix, cypher, sz)                            \
static void run_gcrypt_ ## suffix(uint8_t *output,                                  \
                              const uint8_t *input, unsigned size)                  \
{                                                                                   \
    static gcry_cipher_hd_t suffix;                                                 \
    if (!suffix)                                                                    \
        gcry_cipher_open(&suffix, GCRY_CIPHER_ ## cypher, GCRY_CIPHER_MODE_ECB, 0); \
    gcry_cipher_setkey(suffix, hardcoded_key, sz);                                  \
    gcry_cipher_encrypt(suffix, output, size, input, size);                         \
}

DEFINE_GCRYPT_CYPHER_WRAPPER(aes128,   AES128,      16)
DEFINE_GCRYPT_CYPHER_WRAPPER(blowfish, BLOWFISH,    16)
DEFINE_GCRYPT_CYPHER_WRAPPER(camellia, CAMELLIA128, 16)
DEFINE_GCRYPT_CYPHER_WRAPPER(cast128,  CAST5,       16)
DEFINE_GCRYPT_CYPHER_WRAPPER(des,      DES,         8)
DEFINE_GCRYPT_CYPHER_WRAPPER(twofish,  TWOFISH128,  16)

#define IMPL_USE_gcrypt(...) IMPL_USE(__VA_ARGS__)
#else
#define IMPL_USE_gcrypt(...) /* ignore */
#endif

/***************************************************************************
 * tomcrypt: LibTomCrypt
 ***************************************************************************/

#if (USE_EXT_LIBS) & USE_tomcrypt

#include <tomcrypt.h>

#define DEFINE_TOMCRYPT_WRAPPER(suffix, namespace, algo)                     \
static void run_tomcrypt_ ## suffix(uint8_t *output,                         \
                                    const uint8_t *input, unsigned size)     \
{                                                                            \
    hash_state md;                                                           \
    namespace ## _init(&md);                                                 \
    namespace ## _process(&md, input, size);                                 \
    namespace ## _done(&md, output);                                         \
}

DEFINE_TOMCRYPT_WRAPPER(md5,       md5,    MD5)
DEFINE_TOMCRYPT_WRAPPER(sha1,      sha1,   SHA1)
DEFINE_TOMCRYPT_WRAPPER(sha256,    sha256, SHA256)
DEFINE_TOMCRYPT_WRAPPER(sha512,    sha512, SHA512)
DEFINE_TOMCRYPT_WRAPPER(ripemd128, rmd128, RIPEMD128)
DEFINE_TOMCRYPT_WRAPPER(ripemd160, rmd160, RIPEMD160)

static void run_tomcrypt_aes128(uint8_t *output,
                                const uint8_t *input, unsigned size)
{
    symmetric_key aes;
    unsigned i;

    aes_setup(hardcoded_key, 16, 0, &aes);
    size -= 15;
    for (i = 0; i < size; i += 16)
        aes_ecb_encrypt(input + i, output + i, &aes);
}

static void run_tomcrypt_blowfish(uint8_t *output,
                                  const uint8_t *input, unsigned size)
{
    symmetric_key blowfish;
    unsigned i;

    blowfish_setup(hardcoded_key, 16, 0, &blowfish);
    for (i = 0; i < size; i += 8)
        blowfish_ecb_encrypt(input + i, output + i, &blowfish);
}

static void run_tomcrypt_camellia(uint8_t *output,
                                  const uint8_t *input, unsigned size)
{
    symmetric_key camellia;
    unsigned i;

    camellia_setup(hardcoded_key, 16, 0, &camellia);
    size -= 15;
    for (i = 0; i < size; i += 16)
        camellia_ecb_encrypt(input + i, output + i, &camellia);
}

static void run_tomcrypt_cast128(uint8_t *output,
                                const uint8_t *input, unsigned size)
{
    symmetric_key cast;
    unsigned i;

    cast5_setup(hardcoded_key, 16, 0, &cast);
    for (i = 0; i < size; i += 8)
        cast5_ecb_encrypt(input + i, output + i, &cast);
}

static void run_tomcrypt_des(uint8_t *output,
                             const uint8_t *input, unsigned size)
{
    symmetric_key des;
    unsigned i;

    des_setup(hardcoded_key, 8, 0, &des);
    for (i = 0; i < size; i += 8)
        des_ecb_encrypt(input + i, output + i, &des);
}

static void run_tomcrypt_twofish(uint8_t *output,
                                const uint8_t *input, unsigned size)
{
    symmetric_key twofish;
    unsigned i;

    twofish_setup(hardcoded_key, 16, 0, &twofish);
    size -= 15;
    for (i = 0; i < size; i += 16)
        twofish_ecb_encrypt(input + i, output + i, &twofish);
}

static void run_tomcrypt_xtea(uint8_t *output,
                              const uint8_t *input, unsigned size)
{
    symmetric_key xtea;
    unsigned i;

    xtea_setup(hardcoded_key, 16, 0, &xtea);
    for (i = 0; i < size; i += 8)
        xtea_ecb_encrypt(input + i, output + i, &xtea);
}


#define IMPL_USE_tomcrypt(...) IMPL_USE(__VA_ARGS__)
#else
#define IMPL_USE_tomcrypt(...) /* ignore */
#endif

/***************************************************************************
 * Driver code
 ***************************************************************************/

static unsigned crc32(const uint8_t *data, unsigned size)
{
    return av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, data, size);
}

static void run_implementation(const uint8_t *input, uint8_t *output,
                               struct hash_impl *impl, unsigned size)
{
    uint64_t t0, t1;
    unsigned nruns = specified_runs ? specified_runs : (1 << 30) / size;
    unsigned outlen = 0, outcrc = 0;
    unsigned i, j, val;
    double mtime, ttime = 0, ttime2 = 0, stime;
    uint8_t outref[MAX_OUTPUT_SIZE];

    if (enabled_libs  && !av_stristr(enabled_libs,  impl->lib) ||
        enabled_algos && !av_stristr(enabled_algos, impl->name))
        return;
    if (!sscanf(impl->output, "crc:%x", &outcrc)) {
        outlen = strlen(impl->output) / 2;
        for (i = 0; i < outlen; i++) {
            sscanf(impl->output + i * 2, "%02x", &val);
            outref[i] = val;
        }
    }
    for (i = 0; i < 8; i++) /* heat caches */
        impl->run(output, input, size);
    for (i = 0; i < nruns; i++) {
        memset(output, 0, size); /* avoid leftovers from previous runs */
        t0 = AV_READ_TIME();
        impl->run(output, input, size);
        t1 = AV_READ_TIME();
        if (outlen ? memcmp(output, outref, outlen) :
                     crc32(output, size) != outcrc) {
            fprintf(stderr, "Expected: ");
            if (outlen)
                for (j = 0; j < outlen; j++)
                    fprintf(stderr, "%02x", output[j]);
            else
                fprintf(stderr, "%08x", crc32(output, size));
            fprintf(stderr, "\n");
            fatal_error("output mismatch");
        }
        mtime = (double)(t1 - t0) / size;
        ttime  += mtime;
        ttime2 += mtime * mtime;
    }

    ttime  /= nruns;
    ttime2 /= nruns;
    stime = sqrt(ttime2 - ttime * ttime);
    printf("%-10s %-12s size: %7d  runs: %6d  time: %8.3f +- %.3f\n",
           impl->lib, impl->name, size, nruns, ttime, stime);
    fflush(stdout);
}

#define IMPL_USE(lib, name, symbol, output) \
    { #lib, name, run_ ## lib ## _ ## symbol, output },
#define IMPL(lib, ...) IMPL_USE_ ## lib(lib, __VA_ARGS__)
#define IMPL_ALL(...) \
    IMPL(lavu,       __VA_ARGS__) \
    IMPL(crypto,     __VA_ARGS__) \
    IMPL(gcrypt,     __VA_ARGS__) \
    IMPL(tomcrypt,   __VA_ARGS__)

struct hash_impl implementations[] = {
    IMPL_ALL("MD5",        md5,       "aa26ff5b895356bcffd9292ba9f89e66")
    IMPL_ALL("SHA-1",      sha1,      "1fd8bd1fa02f5b0fe916b0d71750726b096c5744")
    IMPL_ALL("SHA-256",    sha256,    "14028ac673b3087e51a1d407fbf0df4deeec8f217119e13b07bf2138f93db8c5")
    IMPL_ALL("SHA-512",    sha512,    "3afdd44a80d99af15c87bd724cb717243193767835ce866dd5d58c02d674bb57"
                                      "7c25b9e118c200a189fcd5a01ef106a4e200061f3e97dbf50ba065745fd46bef")
    IMPL(lavu,     "RIPEMD-128", ripemd128, "9ab8bfba2ddccc5d99c9d4cdfb844a5f")
    IMPL(tomcrypt, "RIPEMD-128", ripemd128, "9ab8bfba2ddccc5d99c9d4cdfb844a5f")
    IMPL_ALL("RIPEMD-160", ripemd160, "62a5321e4fc8784903bb43ab7752c75f8b25af00")
    IMPL_ALL("AES-128",    aes128,    "crc:ff6bc888")
    IMPL_ALL("CAMELLIA",   camellia,  "crc:7abb59a7")
    IMPL_ALL("CAST-128",   cast128,   "crc:456aa584")
    IMPL_ALL("BLOWFISH",   blowfish,  "crc:33e8aa74")
    IMPL_ALL("DES",        des,       "crc:31291e0b")
    IMPL(lavu,     "TWOFISH", twofish, "crc:9edbd5c1")
    IMPL(gcrypt,   "TWOFISH", twofish, "crc:9edbd5c1")
    IMPL(tomcrypt, "TWOFISH", twofish, "crc:9edbd5c1")
    IMPL(lavu,     "RC4",     rc4,     "crc:538d37b2")
    IMPL(crypto,   "RC4",     rc4,     "crc:538d37b2")
    IMPL(lavu,     "XTEA",    xtea,    "crc:931fc270")
    IMPL(tomcrypt, "XTEA",    xtea,    "crc:931fc270")
};

int main(int argc, char **argv)
{
    uint8_t *input = av_malloc(MAX_INPUT_SIZE * 2);
    uint8_t *output = input + MAX_INPUT_SIZE;
    unsigned i, impl, size;
    int opt;

    while ((opt = getopt(argc, argv, "hl:a:r:")) != -1) {
        switch (opt) {
        case 'l':
            enabled_libs = optarg;
            break;
        case 'a':
            enabled_algos = optarg;
            break;
        case 'r':
            specified_runs = strtol(optarg, NULL, 0);
            break;
        case 'h':
        default:
            fprintf(stderr, "Usage: %s [-l libs] [-a algos] [-r runs]\n",
                    argv[0]);
            if ((USE_EXT_LIBS)) {
                char buf[1024];
                snprintf(buf, sizeof(buf), "%s%s%s",
                         ((USE_EXT_LIBS) & USE_crypto)   ? "+crypto"   : "",
                         ((USE_EXT_LIBS) & USE_gcrypt)   ? "+gcrypt"   : "",
                         ((USE_EXT_LIBS) & USE_tomcrypt) ? "+tomcrypt" : "");
                fprintf(stderr, "Built with the following external libraries:\n"
                        "make VERSUS=%s\n", buf + 1);
            } else {
                fprintf(stderr, "Built without external libraries; use\n"
                        "make VERSUS=crypto+gcrypt+tomcrypt tools/crypto_bench\n"
                        "to enable them.\n");
            }
            exit(opt != 'h');
        }
    }

    if (!input)
        fatal_error("out of memory");
    for (i = 0; i < MAX_INPUT_SIZE; i += 4)
        AV_WB32(input + i, i);

    size = MAX_INPUT_SIZE;
    for (impl = 0; impl < FF_ARRAY_ELEMS(implementations); impl++)
        run_implementation(input, output, &implementations[impl], size);

    av_free(input);

    return 0;
}