RE: Proof of Concept with Pre-Bonded LTK

Kenneth — Thu, 09 May 2019 13:40:42 GMT

Any time before you start advertisement should be good.

RE: Proof of Concept with Pre-Bonded LTK

Stefan Wyss — Thu, 09 May 2019 11:33:50 GMT

I will try to use pm_peer_new(). Thanks a lot for pointing that function out to me. Could you also tell me where you think in the ble_app_bms code I could call that function? (Before or after gap_params_init()? or even later?)

RE: Proof of Concept with Pre-Bonded LTK

Kenneth — Thu, 09 May 2019 11:25:44 GMT

As you already indicate, this is really a bad idea from a security perspective and logistics perspective.

I guess the answer to your questions depends on whether you plan to use the peer manager module (that all our examples that support bonding are using), or whether you want to use the softdevice api and events directly. I will be difficult to mix the two, since the peer manager will handle all security procedures.

If you want to use the peer manager I suggest to take a look at pm_peer_new():
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/group__peer__manager.html#ga0fcba9818cc93048b269c766df95b0ff

If you want to use the softdevice event and api directly, I suggest to take a look at the message sequence charts:
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v6.1.1/group___b_l_e___g_a_p___p_e_r_i_p_h___e_n_c___m_s_c.html