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cryb-to/t/t_sha256.c

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/*-
* Copyright (c) 2012 The University of Oslo
* Copyright (c) 2012-2014 Dag-Erling Smørgrav
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "cryb/impl.h"
#include <sys/types.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <cryb/test.h>
#if WITH_OPENSSL
#include <openssl/sha.h>
#define SHA256_DIGEST_LEN SHA256_DIGEST_LENGTH
static void
t_sha256_complete(const void *msg, size_t msglen, uint8_t *digest)
{
SHA256_CTX ctx;
SHA256_Init(&ctx);
SHA256_Update(&ctx, msg, msglen);
SHA256_Final(digest, &ctx);
}
#else
#include <cryb/sha256.h>
#define t_sha256_complete(msg, msglen, digest) \
sha256_complete(msg, msglen, digest)
#endif
static struct t_vector {
const char *desc;
const char *msg;
const uint8_t digest[SHA256_DIGEST_LEN];
} t_sha256_vectors[] = {
{
"zero-length message",
"",
{
0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14,
0x9a, 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24,
0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c,
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0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0xb8, 0x55,
}
},
{
"FIPS 180-2 B.1 (one-block message)",
"abc",
{
0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea,
0x41, 0x41, 0x40, 0xde, 0x5d, 0xae, 0x22, 0x23,
0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17, 0x7a, 0x9c,
0xb4, 0x10, 0xff, 0x61, 0xf2, 0x00, 0x15, 0xad,
}
},
{
/*
* This message is *just* long enough to necessitate a
* second block, which consists entirely of padding.
*/
"FIPS 180-2 B.2 (multi-block message)",
"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
{
0x24, 0x8d, 0x6a, 0x61, 0xd2, 0x06, 0x38, 0xb8,
0xe5, 0xc0, 0x26, 0x93, 0x0c, 0x3e, 0x60, 0x39,
0xa3, 0x3c, 0xe4, 0x59, 0x64, 0xff, 0x21, 0x67,
0xf6, 0xec, 0xed, 0xd4, 0x19, 0xdb, 0x06, 0xc1,
}
},
{
/*
* 1,000,000 x 'a', filled in by t_prepare()
*/
"FIPS 180-2 B.3 (long message)",
NULL,
{
0xcd, 0xc7, 0x6e, 0x5c, 0x99, 0x14, 0xfb, 0x92,
0x81, 0xa1, 0xc7, 0xe2, 0x84, 0xd7, 0x3e, 0x67,
0xf1, 0x80, 0x9a, 0x48, 0xa4, 0x97, 0x20, 0x0e,
0x04, 0x6d, 0x39, 0xcc, 0xc7, 0x11, 0x2c, 0xd0,
},
},
{
/*
* One of the MD5 test vectors, included for the "short
* update" test.
*/
"\"1234567890\"x8",
"1234567890123456789012345678901234567890"
"1234567890123456789012345678901234567890",
{
0xf3, 0x71, 0xbc, 0x4a, 0x31, 0x1f, 0x2b, 0x00,
0x9e, 0xef, 0x95, 0x2d, 0xd8, 0x3c, 0xa8, 0x0e,
0x2b, 0x60, 0x02, 0x6c, 0x8e, 0x93, 0x55, 0x92,
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0xd0, 0xf9, 0xc3, 0x08, 0x45, 0x3c, 0x81, 0x3e,
},
},
};
/*
* Unit test: compute the SHA256 sum of the specified string and compare it
* to the expected result.
*/
static int
t_sha256_vector(char **desc CRYB_UNUSED, void *arg)
{
struct t_vector *vector = (struct t_vector *)arg;
uint8_t digest[SHA256_DIGEST_LEN];
char msg[1000000];
if (vector->msg) {
t_sha256_complete(vector->msg, strlen(vector->msg), digest);
} else {
/* special case for FIPS test vector 3 */
memset(msg, 'a', 1000000);
t_sha256_complete(msg, 1000000, digest);
}
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return (t_compare_mem(vector->digest, digest, SHA256_DIGEST_LEN));
}
#if !defined(WITH_OPENSSL) && !defined(WITH_RSAREF)
/*
* Various corner cases and error conditions
*/
static int
t_sha256_short_updates(char **desc CRYB_UNUSED, void *arg)
{
struct t_vector *vector = (struct t_vector *)arg;
uint8_t digest[SHA256_DIGEST_LEN];
sha256_ctx ctx;
int i, len;
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sha256_init(&ctx);
len = strlen(vector->msg);
for (i = 0; i + 5 < len; i += 5)
sha256_update(&ctx, vector->msg + i, 5);
sha256_update(&ctx, vector->msg + i, len - i);
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sha256_final(&ctx, digest);
return (memcmp(digest, vector->digest, SHA256_DIGEST_LEN) == 0);
}
#endif
/*
* Performance test: measure the time spent computing the SHA256 sum of a
* message of the specified length.
*/
#define T_PERF_ITERATIONS 1000
static int
t_sha256_perf(char **desc, void *arg)
{
struct timespec ts, te;
unsigned long ns;
uint8_t digest[SHA256_DIGEST_LEN];
size_t msglen = *(size_t *)arg;
char msg[msglen];
clock_gettime(CLOCK_MONOTONIC, &ts);
for (int i = 0; i < T_PERF_ITERATIONS; ++i)
t_sha256_complete(msg, msglen, digest);
clock_gettime(CLOCK_MONOTONIC, &te);
ns = te.tv_sec * 1000000000LU + te.tv_nsec;
ns -= ts.tv_sec * 1000000000LU + ts.tv_nsec;
(void)asprintf(desc, "%zu bytes: %d iterations in %'lu ns",
msglen, T_PERF_ITERATIONS, ns);
return (1);
}
/***************************************************************************
* Boilerplate
*/
static int
t_prepare(int argc, char *argv[])
{
int i, n;
(void)argc;
(void)argv;
n = sizeof t_sha256_vectors / sizeof t_sha256_vectors[0];
for (i = 0; i < n; ++i)
t_add_test(t_sha256_vector, &t_sha256_vectors[i],
t_sha256_vectors[i].desc);
#if !defined(WITH_OPENSSL) && !defined(WITH_RSAREF)
/*
* Run test vector 5 (md5 test vector 7, which is 80 characters
* long) 5 characters at a time. This tests a) appending data to
* an underfull block and b) appending more data to an underfull
* block than it has room for (since 64 % 5 != 0). Test vector 4
* and 5 already exercised the code path for computing a block
* directly from source (without copying it in), and all the test
* vectors except vector 1 exercised the general case of copying a
* small amount of data in without crossing the block boundary.
*/
t_add_test(t_sha256_short_updates, &t_sha256_vectors[4],
"multiple short updates");
#endif
if (t_str_is_true(getenv("CRYB_PERFTEST"))) {
static size_t one = 1, thousand = 1000, million = 1000000;
t_add_test(t_sha256_perf, &one,
"performance test (1 byte)");
t_add_test(t_sha256_perf, &thousand,
"performance test (1,000 bytes)");
t_add_test(t_sha256_perf, &million,
"performance test (1,000,000 bytes)");
}
return (0);
}
int
main(int argc, char *argv[])
{
t_main(t_prepare, NULL, argc, argv);
}