external/srs
1
0
Fork 0
mirror of https://github.com/ossrs/srs.git synced 2025-03-09 15:49:59 +00:00
Code Issues Releases Wiki Activity
srs/trunk/3rdparty/libsrtp-2-fit/crypto/test/cipher_driver.c

603 lines
18 KiB
C
Raw Blame History

/*
* cipher_driver.c
*
* A driver for the generic cipher type
*
* David A. McGrew
* Cisco Systems, Inc.
*/
/*
*
* Copyright (c) 2001-2017 Cisco Systems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 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.
*
* Neither the name of the Cisco Systems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDERS 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.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h> /* for printf() */
#include "getopt_s.h"
#include "cipher.h"
#include "cipher_priv.h"
#ifdef GCM
#include "aes_icm_ext.h"
#include "aes_gcm.h"
#else
#include "aes_icm.h"
#endif
#define PRINT_DEBUG 0
void cipher_driver_test_throughput(srtp_cipher_t *c);
srtp_err_status_t cipher_driver_self_test(srtp_cipher_type_t *ct);
/*
* cipher_driver_test_buffering(ct) tests the cipher's output
* buffering for correctness by checking the consistency of succesive
* calls
*/
srtp_err_status_t cipher_driver_test_buffering(srtp_cipher_t *c);
/*
* functions for testing cipher cache thrash
*/
srtp_err_status_t cipher_driver_test_array_throughput(srtp_cipher_type_t *ct,
int klen,
int num_cipher);
void cipher_array_test_throughput(srtp_cipher_t *ca[], int num_cipher);
uint64_t cipher_array_bits_per_second(srtp_cipher_t *cipher_array[],
int num_cipher,
unsigned octets_in_buffer,
int num_trials);
srtp_err_status_t cipher_array_delete(srtp_cipher_t *cipher_array[],
int num_cipher);
srtp_err_status_t cipher_array_alloc_init(srtp_cipher_t ***cipher_array,
int num_ciphers,
srtp_cipher_type_t *ctype,
int klen);
void usage(char *prog_name)
{
printf("usage: %s [ -t | -v | -a ]\n", prog_name);
exit(255);
}
void check_status(srtp_err_status_t s)
{
if (s) {
printf("error (code %d)\n", s);
exit(s);
}
return;
}
/*
* null_cipher and srtp_aes_icm are the cipher meta-objects
* defined in the files in crypto/cipher subdirectory. these are
* declared external so that we can use these cipher types here
*/
extern srtp_cipher_type_t srtp_null_cipher;
extern srtp_cipher_type_t srtp_aes_icm_128;
extern srtp_cipher_type_t srtp_aes_icm_256;
#ifdef GCM
extern srtp_cipher_type_t srtp_aes_icm_192;
extern srtp_cipher_type_t srtp_aes_gcm_128;
extern srtp_cipher_type_t srtp_aes_gcm_256;
#endif
int main(int argc, char *argv[])
{
srtp_cipher_t *c = NULL;
srtp_err_status_t status;
/* clang-format off */
unsigned char test_key[48] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
};
/* clang-format on */
int q;
unsigned do_timing_test = 0;
unsigned do_validation = 0;
unsigned do_array_timing_test = 0;
/* process input arguments */
while (1) {
q = getopt_s(argc, argv, "tva");
if (q == -1)
break;
switch (q) {
case 't':
do_timing_test = 1;
break;
case 'v':
do_validation = 1;
break;
case 'a':
do_array_timing_test = 1;
break;
default:
usage(argv[0]);
}
}
printf("cipher test driver\n"
"David A. McGrew\n"
"Cisco Systems, Inc.\n");
if (!do_validation && !do_timing_test && !do_array_timing_test)
usage(argv[0]);
/* arry timing (cache thrash) test */
if (do_array_timing_test) {
int max_num_cipher = 1 << 16; /* number of ciphers in cipher_array */
int num_cipher;
for (num_cipher = 1; num_cipher < max_num_cipher; num_cipher *= 8)
cipher_driver_test_array_throughput(&srtp_null_cipher, 0,
num_cipher);
for (num_cipher = 1; num_cipher < max_num_cipher; num_cipher *= 8)
cipher_driver_test_array_throughput(
&srtp_aes_icm_128, SRTP_AES_ICM_128_KEY_LEN_WSALT, num_cipher);
for (num_cipher = 1; num_cipher < max_num_cipher; num_cipher *= 8)
cipher_driver_test_array_throughput(
&srtp_aes_icm_256, SRTP_AES_ICM_256_KEY_LEN_WSALT, num_cipher);
#ifdef GCM
for (num_cipher = 1; num_cipher < max_num_cipher; num_cipher *= 8)
cipher_driver_test_array_throughput(
&srtp_aes_icm_192, SRTP_AES_ICM_192_KEY_LEN_WSALT, num_cipher);
for (num_cipher = 1; num_cipher < max_num_cipher; num_cipher *= 8) {
cipher_driver_test_array_throughput(
&srtp_aes_gcm_128, SRTP_AES_GCM_128_KEY_LEN_WSALT, num_cipher);
}
for (num_cipher = 1; num_cipher < max_num_cipher; num_cipher *= 8) {
cipher_driver_test_array_throughput(
&srtp_aes_gcm_256, SRTP_AES_GCM_256_KEY_LEN_WSALT, num_cipher);
}
#endif
}
if (do_validation) {
cipher_driver_self_test(&srtp_null_cipher);
cipher_driver_self_test(&srtp_aes_icm_128);
cipher_driver_self_test(&srtp_aes_icm_256);
#ifdef GCM
cipher_driver_self_test(&srtp_aes_icm_192);
cipher_driver_self_test(&srtp_aes_gcm_128);
cipher_driver_self_test(&srtp_aes_gcm_256);
#endif
}
/* do timing and/or buffer_test on srtp_null_cipher */
status = srtp_cipher_type_alloc(&srtp_null_cipher, &c, 0, 0);
check_status(status);
status = srtp_cipher_init(c, NULL);
check_status(status);
if (do_timing_test)
cipher_driver_test_throughput(c);
if (do_validation) {
status = cipher_driver_test_buffering(c);
check_status(status);
}
status = srtp_cipher_dealloc(c);
check_status(status);
/* run the throughput test on the aes_icm cipher (128-bit key) */
status = srtp_cipher_type_alloc(&srtp_aes_icm_128, &c,
SRTP_AES_ICM_128_KEY_LEN_WSALT, 0);
if (status) {
fprintf(stderr, "error: can't allocate cipher\n");
exit(status);
}
status = srtp_cipher_init(c, test_key);
check_status(status);
if (do_timing_test)
cipher_driver_test_throughput(c);
if (do_validation) {
status = cipher_driver_test_buffering(c);
check_status(status);
}
status = srtp_cipher_dealloc(c);
check_status(status);
/* repeat the tests with 256-bit keys */
status = srtp_cipher_type_alloc(&srtp_aes_icm_256, &c,
SRTP_AES_ICM_256_KEY_LEN_WSALT, 0);
if (status) {
fprintf(stderr, "error: can't allocate cipher\n");
exit(status);
}
status = srtp_cipher_init(c, test_key);
check_status(status);
if (do_timing_test)
cipher_driver_test_throughput(c);
if (do_validation) {
status = cipher_driver_test_buffering(c);
check_status(status);
}
status = srtp_cipher_dealloc(c);
check_status(status);
#ifdef GCM
/* run the throughput test on the aes_gcm_128 cipher */
status = srtp_cipher_type_alloc(&srtp_aes_gcm_128, &c,
SRTP_AES_GCM_128_KEY_LEN_WSALT, 8);
if (status) {
fprintf(stderr, "error: can't allocate GCM 128 cipher\n");
exit(status);
}
status = srtp_cipher_init(c, test_key);
check_status(status);
if (do_timing_test) {
cipher_driver_test_throughput(c);
}
// GCM ciphers don't do buffering; they're "one shot"
status = srtp_cipher_dealloc(c);
check_status(status);
/* run the throughput test on the aes_gcm_256 cipher */
status = srtp_cipher_type_alloc(&srtp_aes_gcm_256, &c,
SRTP_AES_GCM_256_KEY_LEN_WSALT, 16);
if (status) {
fprintf(stderr, "error: can't allocate GCM 256 cipher\n");
exit(status);
}
status = srtp_cipher_init(c, test_key);
check_status(status);
if (do_timing_test) {
cipher_driver_test_throughput(c);
}
// GCM ciphers don't do buffering; they're "one shot"
status = srtp_cipher_dealloc(c);
check_status(status);
#endif
return 0;
}
void cipher_driver_test_throughput(srtp_cipher_t *c)
{
int i;
int min_enc_len = 32;
int max_enc_len = 2048; /* should be a power of two */
int num_trials = 1000000;
printf("timing %s throughput, key length %d:\n", c->type->description,
c->key_len);
fflush(stdout);
for (i = min_enc_len; i <= max_enc_len; i = i * 2)
printf("msg len: %d\tgigabits per second: %f\n", i,
srtp_cipher_bits_per_second(c, i, num_trials) / 1e9);
}
srtp_err_status_t cipher_driver_self_test(srtp_cipher_type_t *ct)
{
srtp_err_status_t status;
printf("running cipher self-test for %s...", ct->description);
status = srtp_cipher_type_self_test(ct);
if (status) {
printf("failed with error code %d\n", status);
exit(status);
}
printf("passed\n");
return srtp_err_status_ok;
}
/*
* cipher_driver_test_buffering(ct) tests the cipher's output
* buffering for correctness by checking the consistency of succesive
* calls
*/
#define INITIAL_BUFLEN 1024
srtp_err_status_t cipher_driver_test_buffering(srtp_cipher_t *c)
{
int i, j, num_trials = 1000;
unsigned len, buflen = INITIAL_BUFLEN;
uint8_t buffer0[INITIAL_BUFLEN], buffer1[INITIAL_BUFLEN], *current, *end;
uint8_t idx[16] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x12, 0x34 };
srtp_err_status_t status;
printf("testing output buffering for cipher %s...", c->type->description);
for (i = 0; i < num_trials; i++) {
/* set buffers to zero */
for (j = 0; j < (int)buflen; j++) {
buffer0[j] = buffer1[j] = 0;
}
/* initialize cipher */
status = srtp_cipher_set_iv(c, (uint8_t *)idx, srtp_direction_encrypt);
if (status)
return status;
/* generate 'reference' value by encrypting all at once */
status = srtp_cipher_encrypt(c, buffer0, &buflen);
if (status)
return status;
/* re-initialize cipher */
status = srtp_cipher_set_iv(c, (uint8_t *)idx, srtp_direction_encrypt);
if (status)
return status;
/* now loop over short lengths until buffer1 is encrypted */
current = buffer1;
end = buffer1 + buflen;
while (current < end) {
/* choose a short length */
len = srtp_cipher_rand_u32_for_tests() & 0x01f;
/* make sure that len doesn't cause us to overreach the buffer */
if (current + len > end)
len = end - current;
status = srtp_cipher_encrypt(c, current, &len);
if (status)
return status;
/* advance pointer into buffer1 to reflect encryption */
current += len;
/* if buffer1 is all encrypted, break out of loop */
if (current == end)
break;
}
/* compare buffers */
for (j = 0; j < (int)buflen; j++) {
if (buffer0[j] != buffer1[j]) {
#if PRINT_DEBUG
printf("test case %d failed at byte %d\n", i, j);
printf("computed: %s\n",
octet_string_hex_string(buffer1, buflen));
printf("expected: %s\n",
octet_string_hex_string(buffer0, buflen));
#endif
return srtp_err_status_algo_fail;
}
}
}
printf("passed\n");
return srtp_err_status_ok;
}
/*
* The function cipher_test_throughput_array() tests the effect of CPU
* cache thrash on cipher throughput.
*
* cipher_array_alloc_init(ctype, array, num_ciphers) creates an array
* of srtp_cipher_t of type ctype
*/
srtp_err_status_t cipher_array_alloc_init(srtp_cipher_t ***ca,
int num_ciphers,
srtp_cipher_type_t *ctype,
int klen)
{
int i, j;
srtp_err_status_t status;
uint8_t *key;
srtp_cipher_t **cipher_array;
/* pad klen allocation, to handle aes_icm reading 16 bytes for the
14-byte salt */
int klen_pad = ((klen + 15) >> 4) << 4;
/* allocate array of pointers to ciphers */
cipher_array = (srtp_cipher_t **)srtp_crypto_alloc(sizeof(srtp_cipher_t *) *
num_ciphers);
if (cipher_array == NULL)
return srtp_err_status_alloc_fail;
/* set ca to location of cipher_array */
*ca = cipher_array;
/* allocate key */
key = srtp_crypto_alloc(klen_pad);
if (key == NULL) {
srtp_crypto_free(cipher_array);
return srtp_err_status_alloc_fail;
}
/* allocate and initialize an array of ciphers */
for (i = 0; i < num_ciphers; i++) {
/* allocate cipher */
status = srtp_cipher_type_alloc(ctype, cipher_array, klen, 16);
if (status)
return status;
/* generate random key and initialize cipher */
srtp_cipher_rand_for_tests(key, klen);
for (j = klen; j < klen_pad; j++)
key[j] = 0;
status = srtp_cipher_init(*cipher_array, key);
if (status)
return status;
/* printf("%dth cipher is at %p\n", i, *cipher_array); */
/* printf("%dth cipher description: %s\n", i, */
/* (*cipher_array)->type->description); */
/* advance cipher array pointer */
cipher_array++;
}
srtp_crypto_free(key);
return srtp_err_status_ok;
}
srtp_err_status_t cipher_array_delete(srtp_cipher_t *cipher_array[],
int num_cipher)
{
int i;
for (i = 0; i < num_cipher; i++) {
srtp_cipher_dealloc(cipher_array[i]);
}
srtp_crypto_free(cipher_array);
return srtp_err_status_ok;
}
/*
* cipher_array_bits_per_second(c, l, t) computes (an estimate of) the
* number of bits that a cipher implementation can encrypt in a second
* when distinct keys are used to encrypt distinct messages
*
* c is a cipher (which MUST be allocated an initialized already), l
* is the length in octets of the test data to be encrypted, and t is
* the number of trials
*
* if an error is encountered, the value 0 is returned
*/
uint64_t cipher_array_bits_per_second(srtp_cipher_t *cipher_array[],
int num_cipher,
unsigned octets_in_buffer,
int num_trials)
{
int i;
v128_t nonce;
clock_t timer;
unsigned char *enc_buf;
int cipher_index = srtp_cipher_rand_u32_for_tests() % num_cipher;
/* Over-alloc, for NIST CBC padding */
enc_buf = srtp_crypto_alloc(octets_in_buffer + 17);
if (enc_buf == NULL)
return 0; /* indicate bad parameters by returning null */
/* time repeated trials */
v128_set_to_zero(&nonce);
timer = clock();
for (i = 0; i < num_trials; i++, nonce.v32[3] = i) {
/* length parameter to srtp_cipher_encrypt is in/out -- out is total,
* padded
* length -- so reset it each time. */
unsigned octets_to_encrypt = octets_in_buffer;
/* encrypt buffer with cipher */
srtp_cipher_set_iv(cipher_array[cipher_index], (uint8_t *)&nonce,
srtp_direction_encrypt);
srtp_cipher_encrypt(cipher_array[cipher_index], enc_buf,
&octets_to_encrypt);
/* choose a cipher at random from the array*/
cipher_index = (*((uint32_t *)enc_buf)) % num_cipher;
}
timer = clock() - timer;
srtp_crypto_free(enc_buf);
if (timer == 0) {
/* Too fast! */
return 0;
}
return (uint64_t)CLOCKS_PER_SEC * num_trials * 8 * octets_in_buffer / timer;
}
void cipher_array_test_throughput(srtp_cipher_t *ca[], int num_cipher)
{
int i;
int min_enc_len = 16;
int max_enc_len = 2048; /* should be a power of two */
int num_trials = 1000000;
printf("timing %s throughput with key length %d, array size %d:\n",
(ca[0])->type->description, (ca[0])->key_len, num_cipher);
fflush(stdout);
for (i = min_enc_len; i <= max_enc_len; i = i * 4)
printf("msg len: %d\tgigabits per second: %f\n", i,
cipher_array_bits_per_second(ca, num_cipher, i, num_trials) /
1e9);
}
srtp_err_status_t cipher_driver_test_array_throughput(srtp_cipher_type_t *ct,
int klen,
int num_cipher)
{
srtp_cipher_t **ca = NULL;
srtp_err_status_t status;
status = cipher_array_alloc_init(&ca, num_cipher, ct, klen);
if (status) {
printf("error: cipher_array_alloc_init() failed with error code %d\n",
status);
return status;
}
cipher_array_test_throughput(ca, num_cipher);
cipher_array_delete(ca, num_cipher);
return srtp_err_status_ok;
}
Reference in a new issue View git blame Copy permalink