What data do app and BLE 2 generate when pairing and binding on the app and BLE devices?

[liuyanfeng]

What data do app and BLE 2 generate when pairing and binding on the app and BLE devices?Can I get it on the APP side?I know that LTK, STK and other data can be obtained on the device side. Is it also available on the APP side?

[Kenneth]

If you include peer manager module in your application, this module will take care of all security procedures for you and store the required bonding information to flash so it may be used on next connection etc. 

If you are interested in looking into some of the softdevice api calls and events due to bonding you may find the message sequence charts useful:
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v7.2.0/group___b_l_e___g_a_p___p_e_r_i_p_h___l_e_g_a_c_y___m_s_c.html