int atcacert_gen_challenge_hw( uint8_t challenge[32] )
{
if (challenge == NULL)
return ATCACERT_E_BAD_PARAMS;
return atcab_random(challenge);
}
/** \brief Get a random number
* \param[out] randout Pointer the 32 random bytes that were returned by the Random Command
* \return ATCA_STATUS
*/
ATCA_STATUS atcatls_random(uint8_t* randout)
{
ATCA_STATUS status = ATCA_SUCCESS;
do {
// Verify input parameters
if (randout == NULL) {
status = ATCA_BAD_PARAM;
BREAK(status, "NULL inputs");
}
// Call the random command
if ((status = atcab_random(randout)) != ATCA_SUCCESS) BREAK(status, "Random command failed");
} while (0);
return status;
}
/** \brief Test proper Random Command operation using the ECC508.
* \return void
*/
void test_atcatls_random(void)
{
ATCA_STATUS status = ATCA_GEN_FAIL;
uint8_t randomNum[RANDOM_RSP_SIZE] = { 0 };
uint8_t randomNumNull[RANDOM_RSP_SIZE] = { 0 };
int cmpResult = 0;
status = atcatls_init(g_pCfg);
TEST_ASSERT_EQUAL(ATCA_SUCCESS, status);
status = atcab_random(randomNum);
TEST_ASSERT_EQUAL(ATCA_SUCCESS, status);
// Compare randomNum memory, it should have changed. If all bytes are equal memcmp will return 0.
cmpResult = memcmp(randomNum, randomNumNull, RANDOM_RSP_SIZE);
TEST_ASSERT_NOT_EQUAL(cmpResult, 0);
status = atcatls_finish();
TEST_ASSERT_EQUAL(ATCA_SUCCESS, status);
}
