FIELD OF THE DISCLOSURE

The present disclosure relates to Vehicle to Everything (V2X) communications, and in particular relates to trust for V2X messages.

BACKGROUND

Intelligent Transport Systems (ITS) are systems in which a plurality of devices communicate to allow for the transportation system to make better informed decisions with regard to transportation and traffic management, as well as allowing for safer and more coordinated decision-making. ITS system components may be provided within vehicles, as part of the fixed infrastructure, such as on bridges or at intersections, and for other users of the transportation systems including pedestrians or bicyclists.

ITS system deployment is receiving significant focus in many markets around the world, with radiofrequency bands being allocated for the communications. In addition to the vehicle to vehicle communications for safety critical and non-critical applications, further enhancements to provide systems or applications are being developed for vehicle to infrastructure and vehicle to portable scenarios.

However, when such devices communicate, a receiving device needs to be confident that the message received is trustworthy in order to act on the information within such message. One aspect of the problem that a receiving device faces in determining trustworthiness is whether the sending entity is cybersecure. In other words, the receiving entity needs to be confident that the sending entity has not been compromised or hacked. A compromised sending entity could be coerced into sending securely signed but illegitimate messages or data, which may be detrimental to the ITS system.

