As someone who's designed a product that's legitimately meant to unlock cars over the CAN bus, I'll be sad when encrypted/authenticated CAN communications becom

As someone who's designed a product that's legitimately meant to unlock cars over the CAN bus, I'll be sad when encrypted/authenticated CAN communications become the norm! Users should be able to connect to the CAN bus in their own car and remotely lock/unlock the vehicle. There are ways of making a car more secure (there are already several different CAN buses in modern cars - having a security-specific CAN bus inaccessible without physical access to the inside of the vehicle should be a minimum!) To start the vehicle, other manufacturers have the key communicate with the ECU directly, bypassing the accessory CAN bus. Something I'd like to see is a unique private RSA key given to car owners on a USB stick upon purchase of the vehicle to allow them to replicate their own keys.