Spring 2021, No. 1, vol. 3 / Romanian Cyber Security Journal

Securing the C-ITS: a PKI Perspective

Ștefan-Ciprian ARSENI, Dan AVRAM, Mirabela MEDVEI, Mihai TOGAN, Andrei DIMA,,,,

Emergent technologies have led to significant improvements in many industry sectors and, sometimes, facilitated the rapid adoption of these technological advances in different layers of society. The automotive industry, an important one for society and the economy, has seen many advances in the past few years. Through the slow integration of technology and algorithms, basic vehicles transformed into “intelligent” systems, capable of increasing the safety and reliability of transportation. These systems, called ITS (Intelligent Transport Systems), are now close to entering a new phase, one where ITS will communicate with each other and collaborate to ensure a higher degree of passenger safety, improve traffic management and provide means of “smarter” planning for goods transports. Yet, before entering this new phase, entitled C-ITS (Collaborative ITS), enforcing security mechanisms is a top priority. One solution, considered a good starting point for future developments of security aspects, is the use of a custom PKI (Public Key Infrastructure) that can ensure authenticity and user privacy in the context of C-ITS. In this paper, we present how the PKI is tailored, from the architectural point of view, to suit the C-ITS requirements and how this effort is supported by standards and legislation, with a focus on the proposal made by the European Union. We also highlight the main message flows that any car manufacturer will need to be compliant with, in the same scenario of the EU proposed C-ITS PKI.

C-ITS Security, PKI, ETSI PKI Architecture.

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