1/*
2 * auth_driver.c
3 *
4 * a driver for auth functions
5 *
6 * David A. McGrew
7 * Cisco Systems, Inc.
8 */
9
10/*
11 *
12 * Copyright (c) 2001-2006, Cisco Systems, Inc.
13 * All rights reserved.
14 *
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
17 * are met:
18 *
19 *   Redistributions of source code must retain the above copyright
20 *   notice, this list of conditions and the following disclaimer.
21 *
22 *   Redistributions in binary form must reproduce the above
23 *   copyright notice, this list of conditions and the following
24 *   disclaimer in the documentation and/or other materials provided
25 *   with the distribution.
26 *
27 *   Neither the name of the Cisco Systems, Inc. nor the names of its
28 *   contributors may be used to endorse or promote products derived
29 *   from this software without specific prior written permission.
30 *
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
34 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
35 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
36 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
37 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
38 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
41 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
42 * OF THE POSSIBILITY OF SUCH DAMAGE.
43 *
44 */
45
46
47#include <stdio.h>    /* for printf() */
48#include <stdlib.h>   /* for xalloc() */
49#include <unistd.h>   /* for getopt() */
50
51#include "auth.h"
52#include "null_auth.h"
53
54#define PRINT_DEBUG_DATA 0
55
56extern auth_type_t tmmhv2;
57
58const uint16_t msg0[9] = {
59  0x6015, 0xf141, 0x5ba1, 0x29a0, 0xf604, 0xd1c, 0x2d9, 0xaa8a, 0x7931
60};
61
62/* key1 is for TAG_WORDS = 2 */
63
64const uint16_t key1[47] = {
65  0xe627, 0x6a01, 0x5ea7, 0xf27a, 0xc536, 0x2192, 0x11be, 0xea35,
66  0xdb9d, 0x63d6, 0xfa8a, 0xfc45, 0xe08b, 0xd216, 0xced2, 0x7853,
67  0x1a82, 0x22f5, 0x90fb, 0x1c29, 0x708e, 0xd06f, 0x82c3, 0xbee6,
68  0x4f21, 0x6f33, 0x65c0, 0xd211, 0xc25e, 0x9138, 0x4fa3, 0x7c1f,
69  0x61ac, 0x3489, 0x2976, 0x8c19, 0x8252, 0xddbf, 0xcad3, 0xc28f,
70  0x68d6, 0x58dd, 0x504f, 0x2bbf, 0x0278, 0x70b7, 0xcfca
71};
72
73double
74auth_bits_per_second(auth_t *h, int msg_len);
75
76
77void
78usage(char *prog_name) {
79  printf("usage: %s [ -t | -v ]\n", prog_name);
80  exit(255);
81}
82
83#define MAX_MSG_LEN 2048
84
85int
86main (int argc, char *argv[]) {
87  auth_t *a = NULL;
88  err_status_t status;
89  int i;
90  int c;
91  unsigned do_timing_test = 0;
92  unsigned do_validation = 0;
93
94  /* process input arguments */
95  while (1) {
96    c = getopt(argc, argv, "tv");
97    if (c == -1)
98      break;
99    switch (c) {
100    case 't':
101      do_timing_test = 1;
102      break;
103    case 'v':
104      do_validation = 1;
105      break;
106    default:
107      usage(argv[0]);
108    }
109  }
110
111  printf("auth driver\nDavid A. McGrew\nCisco Systems, Inc.\n");
112
113  if (!do_validation && !do_timing_test)
114    usage(argv[0]);
115
116  if (do_validation) {
117    printf("running self-test for %s...", tmmhv2.description);
118    status = tmmhv2_add_big_test();
119    if (status) {
120      printf("tmmhv2_add_big_test failed with error code %d\n", status);
121      exit(status);
122    }
123    status = auth_type_self_test(&tmmhv2);
124    if (status) {
125      printf("failed with error code %d\n", status);
126      exit(status);
127    }
128    printf("passed\n");
129  }
130
131  if (do_timing_test) {
132
133    /* tmmhv2 timing test */
134    status = auth_type_alloc(&tmmhv2, &a, 94, 4);
135    if (status) {
136      fprintf(stderr, "can't allocate tmmhv2\n");
137      exit(status);
138    }
139    status = auth_init(a, (uint8_t *)key1);
140    if (status) {
141      printf("error initializaing auth function\n");
142      exit(status);
143    }
144
145    printf("timing %s (tag length %d)\n",
146	   tmmhv2.description, auth_get_tag_length(a));
147    for (i=8; i <= MAX_MSG_LEN; i *= 2)
148      printf("msg len: %d\tgigabits per second: %f\n",
149	     i, auth_bits_per_second(a, i) / 1E9);
150
151    status = auth_dealloc(a);
152    if (status) {
153      printf("error deallocating auth function\n");
154      exit(status);
155    }
156
157  }
158
159  return 0;
160}
161
162#define NUM_TRIALS 100000
163
164#include <time.h>
165
166double
167auth_bits_per_second(auth_t *a, int msg_len_octets) {
168  int i;
169  clock_t timer;
170  uint8_t *result;
171  int msg_len = (msg_len_octets + 1)/2;
172  uint16_t *msg_string;
173
174  /* create random message */
175  msg_string = (uint16_t *) crypto_alloc(msg_len_octets);
176  if (msg_string == NULL)
177    return 0.0; /* indicate failure */
178  for (i=0; i < msg_len; i++)
179    msg_string[i] = (uint16_t) random();
180
181  /* allocate temporary storage for authentication tag */
182  result = crypto_alloc(auth_get_tag_length(a));
183  if (result == NULL) {
184    free(msg_string);
185    return 0.0; /* indicate failure */
186  }
187
188  timer = clock();
189  for (i=0; i < NUM_TRIALS; i++) {
190    auth_compute(a, (uint8_t *)msg_string, msg_len_octets, (uint8_t *)result);
191  }
192  timer = clock() - timer;
193
194  free(msg_string);
195  free(result);
196
197  return (double) NUM_TRIALS * 8 * msg_len_octets * CLOCKS_PER_SEC / timer;
198}
199
200
201