| dc.description.abstract | In VANETs, how to determine the trustworthiness of event messages has received many attentions in recent years for improving the traffic safety and ensuring the location privacy of vehicles. In existing researches, the decision making accuracy on event message under privacy enhanced scheme, fast forwarded malicious message and collusion attacks are all the outstanding problems. In addition, the decision delay while making decision for distinguishing the message trustworthiness is also a critical issue and need to be resolved.
In this paper, we propose a RSU and beacon-aided trust management system, called RaBTM, which aims to provide message opinion quickly and thwart internal attacker from sending or forwarding forged message in privacy-enhanced VANETs. In addition, a secure broadcast authentication protocol has also been proposed which can not only ensure the privacy of broadcast messages, but also can provide the linking ability of the trust relations of vehicles. On shorten the decision delay, in this paper, we propose an adaptive decision making model which makes decision quickly by the effective and quick assistance of the RSUs. This propose model can effective shorten the decision delay.
To evaluate the detection accuracy and efficiency of our proposed system, we conducted a set of simulations under various trust attacks. Under non-collusion attacks, the simulation results show that the proposed RaBTM can highly resilient to adversarial attacks and performs at least 23% better on detection accuracy, and 12% shorter on decision delay than VEBAS with weighted vote (WV) scheme. Under collusion attacks, RaBTM can still perform better than comparison baseline more than 18% and 14% respectively. | en_US |