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/* test_hmac_prng.c - TinyCrypt implementation of some HMAC-PRNG tests */
/*
* Copyright (C) 2015 by Intel Corporation, 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 Intel Corporation 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 OWNER 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.
*/
/*
* DESCRIPTION
* This module tests the following PRNG routines:
*
* Scenarios tested include:
* - HMAC-PRNG init
* - HMAC-PRNG reseed
* - HMAC-PRNG generate)
*/
#include <tinycrypt/hmac_prng.h>
#include <tinycrypt/constants.h>
#include <stdio.h>
#include <tc_util.h>
#include <drivers/system_timer.h>
#include <ztest.h>
/*
* Main task to test AES
*/
void test_hmac_prng(void)
{
/* Fake personalization and additional_input
* (replace by appropriate values)
* e.g.: hostname+timestamp
*/
u8_t additional_input[] = "additional input";
u8_t personalization[] = "HOSTNAME";
u32_t size = (1 << 15);
struct tc_hmac_prng_struct h;
u8_t random[size];
u8_t seed[128];
u32_t i;
TC_START("Performing HMAC-PRNG tests:");
TC_PRINT("HMAC-PRNG test#1 (init, reseed, generate):\n");
/* Fake seed (replace by a a truly random seed): */
for (i = 0; i < (u32_t)sizeof(seed); ++i) {
seed[i] = i;
}
TC_PRINT("HMAC-PRNG test#1 (init):\n");
/**TESTPOINT: Check HMAC-PRNG init*/
zassert_true(tc_hmac_prng_init(&h, personalization,
sizeof(personalization)), "HMAC-PRNG initialization failed.");
TC_PRINT("HMAC-PRNG test#1 (reseed):\n");
/**TESTPOINT: Check HMAC-PRNG reseed*/
zassert_true(tc_hmac_prng_reseed(&h, seed, sizeof(seed),
additional_input, sizeof(additional_input)),
"HMAC-PRNG reseed failed.");
TC_PRINT("HMAC-PRNG test#1 (generate):\n");
/**TESTPOINT: Check HMAC-PRNG generate*/
zassert_false(tc_hmac_prng_generate(random, size, &h) < 1,
"HMAC-PRNG generate failed.");
TC_PRINT("All HMAC tests succeeded!\n");
}