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-rw-r--r--third_party/srtp/crypto/test/cipher_driver.c491
1 files changed, 491 insertions, 0 deletions
diff --git a/third_party/srtp/crypto/test/cipher_driver.c b/third_party/srtp/crypto/test/cipher_driver.c
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+/*
+ * 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[20] = {
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+ 0x10, 0x11, 0x12, 0x13
+ };
+ 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_cbc, 16, 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 */
+ 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);
+
+ 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 = 100000;
+
+ printf("timing %s throughput:\n", c->type->description);
+ 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;
+
+ /* 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);
+ 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();
+ 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++;
+ }
+
+ 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 = 0;
+
+
+ enc_buf = crypto_alloc(octets_in_buffer);
+ 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) {
+
+ /* choose a cipher at random from the array*/
+ cipher_index = (*((uint32_t *)enc_buf)) % num_cipher;
+
+ /* encrypt buffer with cipher */
+ cipher_set_iv(cipher_array[cipher_index], &nonce);
+ cipher_encrypt(cipher_array[cipher_index], enc_buf, &octets_in_buffer);
+ }
+ timer = clock() - timer;
+
+ free(enc_buf);
+
+ if (timer == 0) {
+ /* Too fast! */
+ return 0;
+ }
+
+ return 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 = 10000;
+
+ printf("timing %s throughput with array size %d:\n",
+ (ca[0])->type->description, 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;
+}
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