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1.1.9
by Mark Purcell
Import upstream version 1.2.2 |
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/*
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* stat-driver.c
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*
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* test driver for the stat_test functions
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*
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* David A. McGrew
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* Cisco Systems, Inc.
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*/
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#include <stdio.h> /* for printf() */ |
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#include "err.h" |
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#include "stat.h" |
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#include "cipher.h" |
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typedef struct { |
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void *state; |
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} random_source_t; |
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err_status_t
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random_source_alloc(void); |
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void
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err_check(err_status_t s) { |
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if (s) { |
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printf("error (code %d)\n", s); |
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exit(1); |
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}
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}
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int
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main (int argc, char *argv[]) { |
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uint8_t buffer[2500]; |
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unsigned int buf_len = 2500; |
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int i, j; |
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extern cipher_type_t aes_icm; |
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cipher_t *c; |
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uint8_t key[30] = { |
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05 |
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};
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v128_t nonce; |
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int num_trials = 500; |
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int num_fail; |
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printf("statistical tests driver\n"); |
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for (i=0; i < 2500; i++) |
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buffer[i] = 0; |
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/* run tests */
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printf("running stat_tests on all-null buffer, expecting failure\n"); |
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printf("monobit %d\n", stat_test_monobit(buffer)); |
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printf("poker %d\n", stat_test_poker(buffer)); |
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printf("runs %d\n", stat_test_runs(buffer)); |
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for (i=0; i < 2500; i++) |
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buffer[i] = rand(); |
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printf("running stat_tests on rand(), expecting success\n"); |
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printf("monobit %d\n", stat_test_monobit(buffer)); |
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printf("poker %d\n", stat_test_poker(buffer)); |
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printf("runs %d\n", stat_test_runs(buffer)); |
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printf("running stat_tests on AES-128-ICM, expecting success\n"); |
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/* set buffer to cipher output */
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for (i=0; i < 2500; i++) |
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buffer[i] = 0; |
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err_check(cipher_type_alloc(&aes_icm, &c, 30)); |
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err_check(cipher_init(c, key, direction_encrypt)); |
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err_check(cipher_set_iv(c, &nonce)); |
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err_check(cipher_encrypt(c, buffer, &buf_len)); |
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/* run tests on cipher outout */
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printf("monobit %d\n", stat_test_monobit(buffer)); |
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printf("poker %d\n", stat_test_poker(buffer)); |
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printf("runs %d\n", stat_test_runs(buffer)); |
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printf("runs test (please be patient): "); |
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fflush(stdout); |
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num_fail = 0; |
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v128_set_to_zero(&nonce); |
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for(j=0; j < num_trials; j++) { |
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for (i=0; i < 2500; i++) |
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buffer[i] = 0; |
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nonce.v32[3] = i; |
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err_check(cipher_set_iv(c, &nonce)); |
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err_check(cipher_encrypt(c, buffer, &buf_len)); |
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if (stat_test_runs(buffer)) { |
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num_fail++; |
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}
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}
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printf("%d failures in %d tests\n", num_fail, num_trials); |
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printf("(nota bene: a small fraction of stat_test failures does not \n" |
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"indicate that the random source is invalid)\n"); |
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return 0; |
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}
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