PTRS: A privacy-preserving trust-based relay selection scheme in VANETs

Abstract

As one of the essential components of Intelligent Transport Systems (ITS), Vehicular Ad Hoc Network (VANET) plays a significant role in enabling various onroad applications, most of which primarily rely on two-hop Vehicle-to-Infrastructure communications. To make such communications reliable and secure, it is significant to ensure that only the trustworthy vehicles are selected as relays. To tackle this challenge, this paper proposes a robust trust-based relay selection scheme, called PTRS, which, based on Dirichlet distribution, systematically integrates a set of unique features of VANET, e.g., hybrid architecture, high dynamics, into the traditional reputation system, with an objective to effectively differentiate the trust levels of the vehicles, meanwhile, preserving robustness. Besides, the location privacy of vehicles are preserved in our proposed scheme by using the technique of pseudonyms and trust levels instead of explicit reputation scores. Detailed security analysis is conducted, which shows that the proposed PTRS scheme is secure and robust against several sophisticated attacks in VANETs. In addition, a set of extensive simulations are carried out, demonstrating its effectiveness and accuracy.

BMCGM: A Behavior Economics-Based Message Transmission Cooperation Guarantee Mechanism in Vehicular Ad-hoc NETworks

“…In the reputation-based cooperation transmission mechanism, nodes which have contributed to their network and have good reputation can use network resources, while those with poor reputation will be evicted from the network. Hu et al [ 25 ] proposed PTRS, which uses the Dirichlet distribution to calculate the feedback reputation to determine the credibility of the node. The authors in Reference [ 26 ] proposed a reputation-based mechanism, where a reputation system is designed for the platform nodes to collect feedback from surrounding nodes and determine the reputation of the nodes.…”

“…Those mechanisms assumed that nodes are independent of each other and each decision behavior of a node depends on the utility value itself and does not affected by the decision motivation of other nodes. The reputation-based cooperation transmission mechanisms proposed in Reference [ 25 , 26 , 27 , 28 , 29 ] assumes that nodes tend to cooperate with the nodes which have high reputation values. The value of reputation becomes the sole motivation for node’s behavior decision and does not consider the behavioral motives of other nodes.…”

Message Relaying and Collaboration Motivating for Mobile Crowdsensing Service: An Edge‐Assisted Approach

“…Vehicles can generate location-hidden trajectory for location-privacy-preserved identification. PTRS [33] is a robust trust-based relay scheme with an objective to distinguish trust levels of the vehicles.…”

Trust and reputation management in vehicular ad hoc networks

“…Second, to make the two-hop vehicle-to-infrastructure communications reliable and secure in vehicular ad hoc networks, a robust trust-based relay selection scheme, called PTRS [38], is improved from TPSQ scheme to ensure that only the trustworthy vehicles are selected as relays between a vehicle and infrastructure.…”

“…However, the location privacy of the vehicles is not preserved though it is of great significance. In this chapter, we will focus on how to protect candidate relay vehicle's location privacy in relay selection application [38] in VANET.…”