Intelligent transport systems — Automatic vehicle and equipment identification — Electronic Registration Identification (ERI) for vehicles — Part 5: Secure communications using symmetrical techniques
ISO 24534 provides the requirements for an electronic registration identification (ERI) using symmetric encryption techniques that are based on an identifier assigned to a vehicle (e.g. for recognition by national authorities) suitable to be used for
electronic identification of local and foreign vehicles by national authorities,
vehicle manufacturing, in-life maintenance and end-of-life identification (vehicle life-cycle management),
adaptation of vehicle data, e.g. in case of international re-sales,
safety related purposes,
crime reduction,
commercial services, and
adhering to privacy and data protection regulations.
ISO 24534-5:2011 specifies the interfaces for a secure exchange of data between the electronic registration tag (ERT), which is the onboard device containing the ERI data, and the ERI reader or ERI writer in or outside the vehicle using symmetric encryption techniques.
Symmetric encryption techniques are based on secret keys shared by a particular community of users, i.e. in closed user groups in which it is trusted that keys are not revealed to outsiders.
It includes
the interface between an ERT and an onboard ERI reader or writer,
the interface between the onboard ERI equipment and (roadside) reading and writing equipment, and
security issues related to the communication with the ERT.
