int main(void) {
uint32_t err_code;
uint32_t time0, time1;
LOG("Starting LFCLK");
err_code = nrf_drv_clock_init();
APP_ERROR_CHECK(err_code);
nrf_drv_clock_lfclk_request(NULL);
LOG("Starting RTC");
err_code = nrf_drv_rtc_init(&rtc, NULL, &rtc_handler);
APP_ERROR_CHECK(err_code);
nrf_drv_rtc_tick_enable(&rtc, false);
nrf_drv_rtc_enable(&rtc);
LOG("Starting RNG");
err_code = nrf_drv_rng_init(NULL);
APP_ERROR_CHECK(err_code);
while (1) {
/* get a random key */
time0 = nrf_drv_rtc_counter_get(&rtc);
uECC_make_key(public_key, private_key);
time1 = nrf_drv_rtc_counter_get(&rtc);
LOG("Key time was %u ", time1 - time0);
/* use the key to sign the hash */
time0 = nrf_drv_rtc_counter_get(&rtc);
uECC_sign(private_key, hash, signature);
time1 = nrf_drv_rtc_counter_get(&rtc);
LOG("Sig Time was %u ", time1 - time0);
/* verify the signature */
time0 = nrf_drv_rtc_counter_get(&rtc);
uECC_verify(public_key, hash, signature);
time1 = nrf_drv_rtc_counter_get(&rtc);
LOG("Verify Time was %u ", time1 - time0);
time0 = nrf_drv_rtc_counter_get(&rtc);
uECC_shared_secret(public_key, private_key, secret);
time1 = nrf_drv_rtc_counter_get(&rtc);
LOG("SS Time was %u ", time1 - time0);
time0 = nrf_drv_rtc_counter_get(&rtc);
sha256_init(&context);
sha256_update(&context, message, 20);
sha256_final(&context, shahash);
time1 = nrf_drv_rtc_counter_get(&rtc);
LOG("SHA Time was %u ", time1 - time0);
}
return 0;
}
/// \brief Get alternative hardware timer's current value (0 .. OS_TRV)
/// \return Current value of the alternative hardware timer
uint32_t os_tick_val(void) {
return nrf_drv_rtc_counter_get(&rtc1);
}
