Abstract: |
Recently the convergence of safety and security needs in automotive systems is one of the main challenges
of the research community. However, the different nature of safety and security metrics suggests that no
individual assessment technique is sufficient, in isolation, to validate large systems that are intended to be
both safe and secure. The introduction of new generation ICT systems into vehicles makes them potentially
vulnerable to security attacks that may impact on the safety of passengers, pedestrians, and vehicle itself.
Hence, entities involved in a communication have to be evaluated trustable by means of specific mechanisms
of the vehicle or infrastructure system. This work aims at proposing an algorithm for the calculation of
reputation of vehicles in a Vehicular Ad Hoc Network (VANET) based on the type and number of exchanged
messages. The ultimate goal is to mitigate the Denial of Service (DoS) attack in such kind of communication
by acting as a firewall with respect to not trustable vehicles. Indeed, the DoS is a security attack that affects
the availability of network bandwidth. This may have an impact on safety of drivers and vehicles since it may
prevent the communication and spread of important information for, e.g., human life. |