how to prove to myself that secured gazell library is encrypting data

RE: how to prove to myself that secured gazell library is encrypting data

Kenneth — Mon, 17 Feb 2020 15:30:57 GMT

If I remember correctly: pipe0 is the pipe used for pairing. pipe1 is encrypted, and pipe2-> is open.

Best regards,
Kenneth

RE: how to prove to myself that secured gazell library is encrypting data

astella — Mon, 17 Feb 2020 09:45:46 GMT

In third device I can now receive in pipe 0, 1 e 2. Pipe 2 is the non encrypted one and I can read the payload in the right way. Pipe 1 is the encrypted one and I can get rubbish! That is perfect. Is it ok that I can receive on pie0 also? Cannot understand what it is , though. Maybe secured gazell library uses it? I have to check documentation. Thank you

RE: how to prove to myself that secured gazell library is encrypting data

astella — Mon, 17 Feb 2020 08:42:50 GMT

In the secure project I also read:

chTableSize = nrf_gzll_get_channel_table_size ();

bool getCh = nrf_gzll_get_channel_table (p_channel_table, &chTableSize);

Now,after setting bitrate, channel table and address, in the third device (the one that has got no secured gazell library) I receive an interrupt every time a gazell packet is received in pipe0. Then using nrf_gzll_fetch_packet_from_rx_fifo I cannot have nothing useful. It may very well be because the packet on pipe0 is encrypted and nrf_gzll_fetch_packet_from_rx_fifo is not suitable to retrieve it correctly. Still it could be that there is some error in parameters configuration

RE: how to prove to myself that secured gazell library is encrypting data

astella — Mon, 17 Feb 2020 08:14:00 GMT

I saw that secured gazell init can be something like that:

// Initialize the Gazell Link Layer
bool result_value = nrf_gzll_init(NRF_GZLL_MODE_HOST);
GAZELLE_ERROR_CODE_CHECK(result_value);

result_value = nrf_gzll_set_timeslot_period(NRF_GZLLDE_RXPERIOD_DIV_2); // Half RX period on an nRF24Lxx device
GAZELLE_ERROR_CODE_CHECK(result_value);

// Initialize the Gazell Pairing Library
//gzp_erase_pairing_data();
gzp_init();
result_value = nrf_gzll_set_rx_pipes_enabled(nrf_gzll_get_rx_pipes_enabled() |
(1 << UNENCRYPTED_DATA_PIPE));
GAZELLE_ERROR_CODE_CHECK(result_value);

gzp_pairing_enable(true);

result_value = nrf_gzll_enable();
GAZELLE_ERROR_CODE_CHECK(result_value);

Very useful is // nrf_gzll_datarate_t nrf_gzll_get_datarate
data_rate = nrf_gzll_get_datarate(); // NRF_GZLL_DATARATE_2MBIT