A Certain Theory Based Trust and Reputation Model in VANETs

Abstract

Vehicle ad hoc networks (VANETs) are prone to security risk, especially node misbehavior arising from attacks. In this paper, a certain theory model based model is proposed. We define reputation of a node in VANETs that consist of direct reputation and indirectly reputation. s, direct reputation can be calculated base on certain-factor model according to the records of history communication behaviors. And indirect reputation of a node can be computed based on fuzzy C-means algorithm. The simulation experiment results show that, compared with the baseline method, the proposed methods has better false alarm rate and misdetection rate.