Volkswagen Ag

Aljoscha Fernandez

Timo Winkelvos

A method is disclosed for authentic data transmission between control devices of a vehicle in which messages which are sent from a first control device to a receiver control device and are provided with a first cryptographic key for authentication, and messages that are sent from a second control device to the receiver control device are provided with a second cryptographic key for authentication. First status information provided with a third cryptographic key is sent from a monitoring module of the first control device to the receiver control device and second status information provided with the second cryptographic key is sent from the second control device to the receiver control device. The first status information and second status information are received by the receiver control device. The received first and second status information is evaluated to detect a manipulation of the first control device.

Method for authentic data transmission between control devices of a vehicle, arrangement with control devices, computer program, and vehicle

Data backup in a vehicle, where a datum is generated by a function implemented on a first control device of the vehicle. The securing of the datum generated is determined using the configuration data stored in a first control device. If the datum generated is to be protected, it is cryptographically marked and/or encrypted. The cryptographically marked and/or encrypted datum is stored in a memory of the first control device. In addition the cryptographically marked and/or encrypted datum or a value derived therefrom is sent over an electronic network of the vehicle to at least one second control device, received by the latter and stored in a memory of the second control device.

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Wolfsburg, Germany

Aljoscha Fernandez