michael@0: /*
michael@0:  * stat-driver.c
michael@0:  *
michael@0:  * test driver for the stat_test functions
michael@0:  *
michael@0:  * David A. McGrew
michael@0:  * Cisco Systems, Inc.
michael@0:  */
michael@0: 
michael@0: /*
michael@0:  *	
michael@0:  * Copyright (c) 2001-2006, Cisco Systems, Inc.
michael@0:  * All rights reserved.
michael@0:  * 
michael@0:  * Redistribution and use in source and binary forms, with or without
michael@0:  * modification, are permitted provided that the following conditions
michael@0:  * are met:
michael@0:  * 
michael@0:  *   Redistributions of source code must retain the above copyright
michael@0:  *   notice, this list of conditions and the following disclaimer.
michael@0:  * 
michael@0:  *   Redistributions in binary form must reproduce the above
michael@0:  *   copyright notice, this list of conditions and the following
michael@0:  *   disclaimer in the documentation and/or other materials provided
michael@0:  *   with the distribution.
michael@0:  * 
michael@0:  *   Neither the name of the Cisco Systems, Inc. nor the names of its
michael@0:  *   contributors may be used to endorse or promote products derived
michael@0:  *   from this software without specific prior written permission.
michael@0:  * 
michael@0:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
michael@0:  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
michael@0:  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
michael@0:  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
michael@0:  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
michael@0:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
michael@0:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
michael@0:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
michael@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
michael@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
michael@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
michael@0:  * OF THE POSSIBILITY OF SUCH DAMAGE.
michael@0:  *
michael@0:  */
michael@0: 
michael@0: #include <stdio.h>         /* for printf() */
michael@0: 
michael@0: #include "err.h"
michael@0: #include "stat.h"
michael@0: 
michael@0: #include "cipher.h"
michael@0: 
michael@0: typedef struct {
michael@0:   void *state;
michael@0: } random_source_t;
michael@0: 
michael@0: err_status_t
michael@0: random_source_alloc(void);
michael@0: 
michael@0: void
michael@0: err_check(err_status_t s) {
michael@0:   if (s) {
michael@0:     printf("error (code %d)\n", s);
michael@0:     exit(1);
michael@0:   }
michael@0: }
michael@0: 
michael@0: int
michael@0: main (int argc, char *argv[]) {
michael@0:   uint8_t buffer[2500];
michael@0:   unsigned int buf_len = 2500;
michael@0:   int i, j;
michael@0:   extern cipher_type_t aes_icm;
michael@0:   cipher_t *c;
michael@0:   uint8_t key[46] = {
michael@0:     0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
michael@0:     0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
michael@0:     0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
michael@0:     0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
michael@0:     0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
michael@0:     0x00, 0x01, 0x02, 0x03, 0x04, 0x05
michael@0:     };
michael@0:   v128_t nonce;
michael@0:   int num_trials = 500;
michael@0:   int num_fail;
michael@0: 
michael@0:   printf("statistical tests driver\n");
michael@0: 
michael@0:   for (i=0; i < 2500; i++)
michael@0:     buffer[i] = 0;
michael@0: 
michael@0:   /* run tests */
michael@0:   printf("running stat_tests on all-null buffer, expecting failure\n");
michael@0:   printf("monobit %d\n", stat_test_monobit(buffer));
michael@0:   printf("poker   %d\n", stat_test_poker(buffer));
michael@0:   printf("runs    %d\n", stat_test_runs(buffer));
michael@0: 
michael@0:   for (i=0; i < 2500; i++)
michael@0:     buffer[i] = rand();
michael@0:   printf("running stat_tests on rand(), expecting success\n");
michael@0:   printf("monobit %d\n", stat_test_monobit(buffer));
michael@0:   printf("poker   %d\n", stat_test_poker(buffer));
michael@0:   printf("runs    %d\n", stat_test_runs(buffer));
michael@0: 
michael@0:   printf("running stat_tests on AES-128-ICM, expecting success\n");
michael@0:   /* set buffer to cipher output */
michael@0:   for (i=0; i < 2500; i++)
michael@0:     buffer[i] = 0;
michael@0:   err_check(cipher_type_alloc(&aes_icm, &c, 30));
michael@0:   err_check(cipher_init(c, key, direction_encrypt));
michael@0:   err_check(cipher_set_iv(c, &nonce));
michael@0:   err_check(cipher_encrypt(c, buffer, &buf_len));
michael@0:   /* run tests on cipher outout */
michael@0:   printf("monobit %d\n", stat_test_monobit(buffer));
michael@0:   printf("poker   %d\n", stat_test_poker(buffer));
michael@0:   printf("runs    %d\n", stat_test_runs(buffer));
michael@0: 
michael@0:   printf("runs test (please be patient): ");
michael@0:   fflush(stdout);
michael@0:   num_fail = 0;
michael@0:   v128_set_to_zero(&nonce);
michael@0:   for(j=0; j < num_trials; j++) {
michael@0:     for (i=0; i < 2500; i++)
michael@0:       buffer[i] = 0;
michael@0:     nonce.v32[3] = i;
michael@0:     err_check(cipher_set_iv(c, &nonce));
michael@0:     err_check(cipher_encrypt(c, buffer, &buf_len));
michael@0:     if (stat_test_runs(buffer)) {
michael@0:       num_fail++;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   printf("%d failures in %d tests\n", num_fail, num_trials);
michael@0:   printf("(nota bene: a small fraction of stat_test failures does not \n"
michael@0: 	 "indicate that the random source is invalid)\n");
michael@0: 
michael@0:   err_check(cipher_dealloc(c));
michael@0: 
michael@0:   printf("running stat_tests on AES-256-ICM, expecting success\n");
michael@0:   /* set buffer to cipher output */
michael@0:   for (i=0; i < 2500; i++)
michael@0:     buffer[i] = 0;
michael@0:   err_check(cipher_type_alloc(&aes_icm, &c, 46));
michael@0:   err_check(cipher_init(c, key, direction_encrypt));
michael@0:   err_check(cipher_set_iv(c, &nonce));
michael@0:   err_check(cipher_encrypt(c, buffer, &buf_len));
michael@0:   /* run tests on cipher outout */
michael@0:   printf("monobit %d\n", stat_test_monobit(buffer));
michael@0:   printf("poker   %d\n", stat_test_poker(buffer));
michael@0:   printf("runs    %d\n", stat_test_runs(buffer));
michael@0: 
michael@0:   printf("runs test (please be patient): ");
michael@0:   fflush(stdout);
michael@0:   num_fail = 0;
michael@0:   v128_set_to_zero(&nonce);
michael@0:   for(j=0; j < num_trials; j++) {
michael@0:     for (i=0; i < 2500; i++)
michael@0:       buffer[i] = 0;
michael@0:     nonce.v32[3] = i;
michael@0:     err_check(cipher_set_iv(c, &nonce));
michael@0:     err_check(cipher_encrypt(c, buffer, &buf_len));
michael@0:     if (stat_test_runs(buffer)) {
michael@0:       num_fail++;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   printf("%d failures in %d tests\n", num_fail, num_trials);
michael@0:   printf("(nota bene: a small fraction of stat_test failures does not \n"
michael@0: 	 "indicate that the random source is invalid)\n");
michael@0: 
michael@0:   err_check(cipher_dealloc(c));
michael@0: 
michael@0:   return 0;
michael@0: }