A trust management framework for vehicular ad hoc networks

TL;DR

This paper introduces a tamper-proof device-based trust management framework for VANETs that reduces communication overhead and improves response times by controlling trust at the sender side and only disseminating feedback during conflicts.

Contribution

It proposes a novel TPD-based trust management system that enhances efficiency and reliability in VANETs by minimizing trust metric dissemination and using a weighted voting conflict resolution.

Findings

Outperforms centralized reputation systems in efficiency

Reduces communication overhead in trust management

Improves response time in detecting malicious behavior

Abstract

Vehicular Ad Hoc Networks (VANETs) enable road users and public infrastructure to share information that improves the operation of roads and driver experience. However, these are vulnerable to poorly behaved authorized users. Trust management is used to address attacks from authorized users in accordance with their trust score. By removing the dissemination of trust metrics in the validation process, communication overhead and response time are lowered. In this paper, we propose a new Tamper-Proof Device (TPD) based trust management framework for controlling trust at the sender side vehicle that regulates driver behaviour. Moreover, the dissemination of feedback is only required when there is conflicting information in the VANET. If a conflict arises, the Road-Side Unit (RSU) decides, using the weighted voting system, whether the originator is to be believed, or not. The framework is evaluated against a centralized reputation approach and the results demonstrate that it outperforms the latter.