when the mobile connect to another one,depending on the request from the Bluetooth device, one of the following shall be used.

1)Authentication by PIN-Code entry

2)Authentication by SSP (Secure Simple Pairing)

Question:

why i can not find any information about authentication? if it’s using 1) to pair device,i need a API to input PIN-Code,but i can not find this API.

if authentication is done in core,please show me the file path and function. i can find anything about authentication  in the core ,ether.

thanks a lot.