Collusion-resistant. Lightweight and Privacy-preserving Authentication Protocol for IoV
Wassila Lalouani, Mohamed Younis · 2023
Internet of Vehicles (IoV) is a distributed network supporting communication in real time between vehicles, pedestrians, and roadside infrastructure. An utmost challenge in such an integrated network is how to ensure the authenticity of the communicating vehicles and protect the network against impersonation, message replay and Sybil attacks. Compared to traditional authentication mechanisms, a major concern in IoV authentication is how to achieve real time verification of vehicle identities without violating the user's location privacy. The approach should also be lizhtweight to cope with the constrained computational resources of the vehicle. This paper proposes a privacy-preserving protocol that not only provides the vehicle user's anonymous authentication but also resists Sybil attacks through multiple registrations. Our protocol leverages the usage of lightweight hardware flngerprinting primitives and the properties of elliptic curves. Particularly we employ physically unclonable functions (PUFs). An elliptic curve serves as an implicit dynamic one-way transformation of the hardware fingerprint to ensure the anonymity of the sources and provide further forward secrecy. The robustness of the proposed approach is validated using data collected from an FPGA-based PUF implementation.