KeeLoq Broken

KeeLoq, the major remote keyless entry system for cars and buildings is hacked - again.

The CryptoLab of Ruhr University Bochum published an attack on the most widely used remote keyless entry system. The researches used a differential power analysis to recover the manufacturer key. With that key all you need is two messages between the key and the door/car. These messages can be picked up from 100m away. Knowing the manufacturer key allows for creating an arbitrary number of valid new keys and generating new remote controls.

This is a new attack and should not be confused with an older ones.