Global Roaming Trust-based Model for V2X Communications

TL;DR

This paper proposes a global trust-based security model for V2X communications in smart cities, enhancing detection of malicious nodes and reducing false negatives in cyber-attack mitigation.

Contribution

It introduces a novel global roaming trust model that improves security by enabling vehicles to share malicious node information across networks.

Findings

Reduces False Negative Rate by 33.5%

Effective detection of internal and external cyber-attacks

Enhances trust management in V2X networks

Abstract

Smart cities need to connect physical devices as a network to improve the efficiency of city operations and services. Intelligent Transportation System (ITS) is one of the key components in smart cities, due to its capability of supporting communications between vehicles to improve the driving experience. Whilst Vehicle-to-Everything (V2X) communications are essential, cyber-security poses a significant challenge in V2X communications. A V2X communication link is vulnerable to various cyber-attacks including internal and external attacks. Internal attacks cannot be detected by conventional security schemes because the compromised nodes have valid credentials. Thus, a new trust model is urgently needed to mitigate cyber-security risks. In this paper, a global roaming trust-based security model is proposed for V2X communications. Each vehicle has a global knowledge about malicious nodes in the network. In addition, various experiments are conducted with different percentage of malicious nodes to measure the performance of the proposed model. Simulation results show that the proposed model improves False Negative Rate (FNR) by 33.5% in comparison with the existing method.