A Comparative Study on Trust-Based Security Routing Protocols for Vanets

Abstract

Vehicular Ad-Hoc Networks (VANETs) have gained popularity due to their ideal characteristics and wide range of applications. In VANETs, every vehicle is capable of acting as a routing device to transmit the data as well as an endpoint vehicular node for the processing of transmitted data. Various routing protocols were proposed for VANETs to determine the paths between the two vehicular nodes. The majority of these protocols were derived from the protocol designs of MANETs. Due to the distinct traits of nodes in the VANETs, there is the need for appending security features to the existing protocols for reliable and secure communication among the vehicular networks. VANET Secure routing protocols can be of three main classes, namely, Cryptography based, Trust-based and Hybrid protocols. In this paper, we surveyed various Trust-based security mechanisms to actively secure the communications taking place between the vehicular nodes. Also, the surveyed Trust-based protocols were compared to determine the effectiveness and working strategies of each of them.