PRIF: A Privacy-Preserving Interest-Based Forwarding Scheme for Social Internet of Vehicles
This work addresses privacy and performance issues in SIOV routing, which is important for vehicle networks, but it appears incremental as it builds on existing interest-based schemes by adding privacy features.
The paper tackles the problem of protecting users' interest information in social Internet of vehicles (SIOV) while improving forwarding performance, proposing a privacy-preserving interest-based forwarding scheme (PRIF) that outperforms existing algorithms like BEEINFO, Epidemic, and PRoPHET in simulations.
Recent advances in Socially Aware Networks (SANs) have allowed its use in many domains, out of which social Internet of vehicles (SIOV) is of prime importance. SANs can provide a promising routing and forwarding paradigm for SIOV by using interest-based communication. Though able to improve the forwarding performance, existing interest-based schemes fail to consider the important issue of protecting users' interest information. In this paper, we propose a PRivacy-preserving Interest-based Forwarding scheme (PRIF) for SIOV, which not only protects the interest information, but also improves the forwarding performance. We propose a privacy-preserving authentication protocol to recognize communities among mobile nodes. During data routing and forwarding, a node can know others' interests only if they are affiliated with the same community. Moreover, to improve forwarding performance, a new metric {\em community energy} is introduced to indicate vehicular social proximity. Community energy is generated when two nodes encounter one another and information is shared among them. PRIF considers this energy metric to select forwarders towards the destination node or the destination community. Security analysis indicates PRIF can protect nodes' interest information. In addition, extensive simulations have been conducted to demonstrate that PRIF outperforms the existing algorithms including the BEEINFO, Epidemic, and PRoPHET.