My goal is to prevent unauthorized access to our cube orange plus so that someone would have to enter a password either to connect to it serially or remotely. Is this something doable within the current framework of PX4? Would MAVLink message signing accomplish this?
Sorry for the late reply, did not see the notification.
I have not found a solution to this problem. There might be a way to disable serial connection via custom modification to the firmware, but that is outside my knowledge.
I have, however, been able to have flight logs encrypted