Protection method for authentication algorithm used motor vehicle control devices involves storing authentication algorithm which is independent of tester system, by manufacturer partner

摘要

An unencrypted authentication algorithm (1) is produced and encoded by the controller manufacturer (A). A decoder (7) for the authentication algorithm is implemented on the side of the tester system (D) in the firmware (C) by the tester system manufacturer. A coded authentication algorithm (3) is stored on a removable storage medium (5) on a computer (4), which is independent of the tester system, by the partner of manufacturer (B). An independent claim is also included for the device for remotely accessing Conrail devices.