diff options
Diffstat (limited to 'netwerk/srtp/src/crypto/test/cipher_driver.c')
| -rw-r--r-- | netwerk/srtp/src/crypto/test/cipher_driver.c | 531 |
1 files changed, 531 insertions, 0 deletions
diff --git a/netwerk/srtp/src/crypto/test/cipher_driver.c b/netwerk/srtp/src/crypto/test/cipher_driver.c new file mode 100644 index 000000000..ea41ff5a4 --- /dev/null +++ b/netwerk/srtp/src/crypto/test/cipher_driver.c @@ -0,0 +1,531 @@ +/* + * cipher_driver.c + * + * A driver for the generic cipher type + * + * David A. McGrew + * Cisco Systems, Inc. + */ + +/* + * + * Copyright (c) 2001-2006, 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. + * + */ + +#include <stdio.h> /* for printf() */ +#include <stdlib.h> /* for rand() */ +#include <string.h> /* for memset() */ +#include <unistd.h> /* for getopt() */ +#include "cipher.h" +#include "aes_icm.h" +#include "null_cipher.h" + +#define PRINT_DEBUG 0 + +void +cipher_driver_test_throughput(cipher_t *c); + +err_status_t +cipher_driver_self_test(cipher_type_t *ct); + + +/* + * cipher_driver_test_buffering(ct) tests the cipher's output + * buffering for correctness by checking the consistency of succesive + * calls + */ + +err_status_t +cipher_driver_test_buffering(cipher_t *c); + + +/* + * functions for testing cipher cache thrash + */ +err_status_t +cipher_driver_test_array_throughput(cipher_type_t *ct, + int klen, int num_cipher); + +void +cipher_array_test_throughput(cipher_t *ca[], int num_cipher); + +uint64_t +cipher_array_bits_per_second(cipher_t *cipher_array[], int num_cipher, + unsigned octets_in_buffer, int num_trials); + +err_status_t +cipher_array_delete(cipher_t *cipher_array[], int num_cipher); + +err_status_t +cipher_array_alloc_init(cipher_t ***cipher_array, int num_ciphers, + 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(err_status_t s) { + if (s) { + printf("error (code %d)\n", s); + exit(s); + } + return; +} + +/* + * null_cipher, aes_icm, and aes_cbc 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 cipher_type_t null_cipher; +extern cipher_type_t aes_icm; +extern cipher_type_t aes_cbc; + +int +main(int argc, char *argv[]) { + cipher_t *c = NULL; + err_status_t status; + 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, + }; + int q; + unsigned do_timing_test = 0; + unsigned do_validation = 0; + unsigned do_array_timing_test = 0; + + /* process input arguments */ + while (1) { + q = getopt(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(&null_cipher, 0, num_cipher); + + for (num_cipher=1; num_cipher < max_num_cipher; num_cipher *=8) + cipher_driver_test_array_throughput(&aes_icm, 30, num_cipher); + + for (num_cipher=1; num_cipher < max_num_cipher; num_cipher *=8) + cipher_driver_test_array_throughput(&aes_icm, 46, num_cipher); + + for (num_cipher=1; num_cipher < max_num_cipher; num_cipher *=8) + cipher_driver_test_array_throughput(&aes_cbc, 16, num_cipher); + + for (num_cipher=1; num_cipher < max_num_cipher; num_cipher *=8) + cipher_driver_test_array_throughput(&aes_cbc, 32, num_cipher); + } + + if (do_validation) { + cipher_driver_self_test(&null_cipher); + cipher_driver_self_test(&aes_icm); + cipher_driver_self_test(&aes_cbc); + } + + /* do timing and/or buffer_test on null_cipher */ + status = cipher_type_alloc(&null_cipher, &c, 0); + check_status(status); + + status = cipher_init(c, NULL, direction_encrypt); + 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 = cipher_dealloc(c); + check_status(status); + + + /* run the throughput test on the aes_icm cipher (128-bit key) */ + status = cipher_type_alloc(&aes_icm, &c, 30); + if (status) { + fprintf(stderr, "error: can't allocate cipher\n"); + exit(status); + } + + status = cipher_init(c, test_key, direction_encrypt); + 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 = cipher_dealloc(c); + check_status(status); + + /* repeat the tests with 256-bit keys */ + status = cipher_type_alloc(&aes_icm, &c, 46); + if (status) { + fprintf(stderr, "error: can't allocate cipher\n"); + exit(status); + } + + status = cipher_init(c, test_key, direction_encrypt); + 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 = cipher_dealloc(c); + check_status(status); + + return 0; +} + +void +cipher_driver_test_throughput(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, cipher_bits_per_second(c, i, num_trials) / 1e9); + +} + +err_status_t +cipher_driver_self_test(cipher_type_t *ct) { + err_status_t status; + + printf("running cipher self-test for %s...", ct->description); + status = cipher_type_self_test(ct); + if (status) { + printf("failed with error code %d\n", status); + exit(status); + } + printf("passed\n"); + + return err_status_ok; +} + +/* + * cipher_driver_test_buffering(ct) tests the cipher's output + * buffering for correctness by checking the consistency of succesive + * calls + */ + +err_status_t +cipher_driver_test_buffering(cipher_t *c) { + int i, j, num_trials = 1000; + unsigned len, buflen = 1024; + uint8_t buffer0[buflen], buffer1[buflen], *current, *end; + uint8_t idx[16] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x12, 0x34 + }; + 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 < buflen; j++) + buffer0[j] = buffer1[j] = 0; + + /* initialize cipher */ + status = cipher_set_iv(c, idx); + if (status) + return status; + + /* generate 'reference' value by encrypting all at once */ + status = cipher_encrypt(c, buffer0, &buflen); + if (status) + return status; + + /* re-initialize cipher */ + status = cipher_set_iv(c, idx); + 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 = rand() & 0x01f; + + /* make sure that len doesn't cause us to overreach the buffer */ + if (current + len > end) + len = end - current; + + status = 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 < 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 err_status_algo_fail; + } + } + + printf("passed\n"); + + return 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 cipher_t of type ctype + */ + +err_status_t +cipher_array_alloc_init(cipher_t ***ca, int num_ciphers, + cipher_type_t *ctype, int klen) { + int i, j; + err_status_t status; + uint8_t *key; + 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 = (cipher_t **) malloc(sizeof(cipher_t *) * num_ciphers); + if (cipher_array == NULL) + return err_status_alloc_fail; + + /* set ca to location of cipher_array */ + *ca = cipher_array; + + /* allocate key */ + key = crypto_alloc(klen_pad); + if (key == NULL) { + free(cipher_array); + return err_status_alloc_fail; + } + + /* allocate and initialize an array of ciphers */ + for (i=0; i < num_ciphers; i++) { + + /* allocate cipher */ + status = cipher_type_alloc(ctype, cipher_array, klen); + if (status) + return status; + + /* generate random key and initialize cipher */ + for (j=0; j < klen; j++) + key[j] = (uint8_t) rand(); + for (; j < klen_pad; j++) + key[j] = 0; + status = cipher_init(*cipher_array, key, direction_encrypt); + 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++; + } + + crypto_free(key); + + return err_status_ok; +} + +err_status_t +cipher_array_delete(cipher_t *cipher_array[], int num_cipher) { + int i; + + for (i=0; i < num_cipher; i++) { + cipher_dealloc(cipher_array[i]); + } + + free(cipher_array); + + return 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(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 = rand() % num_cipher; + + /* Over-alloc, for NIST CBC padding */ + enc_buf = crypto_alloc(octets_in_buffer+17); + if (enc_buf == NULL) + return 0; /* indicate bad parameters by returning null */ + memset(enc_buf, 0, octets_in_buffer); + + /* time repeated trials */ + v128_set_to_zero(&nonce); + timer = clock(); + for(i=0; i < num_trials; i++, nonce.v32[3] = i) { + /* length parameter to 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 */ + cipher_set_iv(cipher_array[cipher_index], &nonce); + 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; + + 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(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); + +} + +err_status_t +cipher_driver_test_array_throughput(cipher_type_t *ct, + int klen, int num_cipher) { + cipher_t **ca = NULL; + 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 err_status_ok; +} |