Method for ensuring the integrity of data to ensure operational safety and vehicle-to-X device

A vehicle-to-X (V2X) communication device of a vehicle, the V2X communication device comprising:

• a first computing apparatus for data processing,
• a second computing apparatus for data processing,
• a receiving apparatus for receiving V2X messages by an antenna, the V2X received messages transmitted by vehicle-to-X communication from another V2X communication device of another vehicle or an infrastructure device,
• a transmitting apparatus for transmitting data to a control module of the vehicle, and
• a comparison apparatus of the vehicle,
• wherein the first computing apparatus is configured to store data of the V2X messages received by the receiving apparatus in a data memory of the V2X communication device, and to forward the data to the second computing apparatus,
• wherein the second computing apparatus is configured to receive the data from the first computing apparatus, and establish whether an action is to be triggered for the data, the action including controlling the vehicle based on the data, and, in response to establishing that an action is to be triggered:
• transmit the data to the comparison apparatus external to the second computing apparatus, and
• perform, by the comparison apparatus, a comparison test by comparing the data transmitted by the second computing apparatus with the data stored in the data memory, and output a signal displaying the result in response to the comparison test being passed,
• wherein when the action is not to be triggered, the second computing apparatus does not transmit the data to the comparison apparatus and the comparison apparatus does not perform the comparison test on the data, and
• wherein the V2X communication device is configured to output, to the control module, the data and/or a control instruction and/or a warning message in response to the signal.