Get entered passcode

RE: Get entered passcode

Einar Thorsrud — Fri, 04 Sep 2020 06:26:23 GMT

Yes. Sending key press notifications is optional, so if you do not get the event, then it is probably not sent by the phone.

RE: Get entered passcode

William.wei — Fri, 04 Sep 2020 05:20:15 GMT

i guess this event is from mobile phone, so no message is received by nrf device, right ?

RE: Get entered passcode

William.wei — Fri, 04 Sep 2020 04:55:28 GMT

hi Einar,

Can you instruct me how to catch this BLE_GAP_EVT_KEY_PRESSED , i simply add this event in ble_evt_handler, it doesn't work. also can't find out any doc about this in devzone.

Regards,

William.

RE: Get entered passcode

Einar Thorsrud — Tue, 28 Jan 2020 10:32:41 GMT

Hi,

There is no possibility to get this information from the SoftDevice. The only thing you get is a BLE_GAP_EVT_KEY_PRESSED every time a key is pressed on the peer when using LESC, but there is no way to know which number was entered or the full passkey.

RE: Get entered passcode

Elias Löwe — Mon, 27 Jan 2020 14:46:55 GMT

Let me clarify it:

1. I have nRF52840 board with NUS service and BLE connection requires passcode

2. I connect to the device using lets say iPhone and nRF Connect or Bluefruit app.

3. iOS asks for passcode, I enter some, lets say `123456`

4. Right passcode on the device is `654321`

5. So I get the PM_EVT_CONN_SEC_FAILED event on device side with mesage

<info> peer_manager_handler: Connection security failed: role: Peripheral, conn_handle: 0x0, procedure: Bonding, error: 132

<warning> peer_manager_handler: Disconnecting conn_handle 0.

6. It is absolutely correct workflow but I would like to know in the firmware, that user entered `123456`, not just that it was wrong.

Is it possible?

RE: Get entered passcode

awneil — Mon, 27 Jan 2020 14:41:38 GMT

Surely, you must know how the code is entered?

You must have provided the code which reads whatever input device is used?

If you don't know - when it's your device - how can anyone else possibly know?!

RE: Get entered passcode

Elias Löwe — Mon, 27 Jan 2020 14:39:23 GMT

Yes, it is my device. I can not find which event of PM I have to handle and how I can get entered code.

RE: Get entered passcode

awneil — Mon, 27 Jan 2020 14:38:21 GMT

Is the code being entered on your device?

If yes - then you have control, and can "get" whatever you want.
If no - then you will have to ask the device developer; but it seems highly unlikely.