Patent ID: 8222989
Filing Date: 2012-07-17
Classification: B60R,G07C,H04L

Abstract:
1. A method for the protection of a movable item ( 100 ) against unauthorized use, wherein the movable item is an aircraft, vehicle, a motor vehicle, or a construction machine, the method comprising the following steps: cryptographically authenticating the movable item to an external computer system ( sending the signed code and a certificate ( receiving the signed code and the certificate ( checking validity of the signed code using the public key by the external computer system, wherein the signed code is valid if the signed code matches the code of the certificate or if the signed code matches a code which is associated, in an association table ( performing a check by the external computer system to determine whether a block is stored for the movable item, sending a use signal from the external computer system to the movable item in order to allow use of the movable item when no block is stored for the movable item, wherein the use signal is sent only if the signed code is valid, and sending a block signal from the external computer system to the movable item, wherein the block signal is sent only if a block is stored for the movable item or the signed code is invalid.