Trust Mechanism Based AODV Routing Protocol for Forward Node Authentication in Mobile Ad Hoc Network

Ad hoc networks due to its open and dynamic nature are susceptible to a variety of security threats. Recently trust management emerged as the promising candidate to provide less computational and secure solutions. This paper based on novel idea i.e. trust mechanism based AODV (Ad hoc On-demand Distance Vector) routing protocol in the network layer of MANET to enhance network security. In our proposed scheme trust among nodes is represented by opinions, which is an item derived from three Valued subjective logic (3VSL). The opinions are dynamic, therefore judged, combined and updated frequently. In 3VSL the theoretical capabilities are based on Dirichlet distribution by considering prior and posterior uncertainty of the said event. Meanwhile, using advised and personal trust, a node can make relative judgment for forward node authenticity. The simulated results validate the accuracy of our proposed scheme.