ITU-T X.1373 PDF

In the context of updates of software modules in the electric devices of vehicles in the intelligent transportation system (ITS) communication environment, this Recommendation aims to provide a procedure of secure software updating for ITS communication devices for the application layer in order to prevent threats such as tampering of and malicious intrusion to communication devices in vehicles. This includes a basic model of software update, security controls for software update and a specification of abstract data format of update software module.

The procedure related to in-vehicle communication is the out of scope of this Recommendation. For reference, the procedure used in-vehicle in this Recommendation is informative.

The procedure is intended to be applied to communication devices on ITS vehicles under vehicle-to-infrastructure (V2I) communication by means of the Internet and/or ITS dedicated networks. The procedure provides a technical guideline without compliance requirements and can be practically utilized by car manufactures and ITS-related industries as a set of secure procedures and security controls