Quantifying Nodes Trustworthiness Using Hybrid Approach for Secure Routing in Mobile Ad Hoc Networks

Abstract

AbstractMobile Adhoc Networks (MANET) is a group of moving nodes where these nodes communicate each other through wireless links thus forming adhoc network. Each node works as router and forward packets from source to destination. Multiple wireless devices that connects on the fly in any situation are being gained importance today. These devices are flexible in nature, ad hoc and they can be temporarily setup at any point of time, in any place. These networks have lesser infrastructure costs due to decentralized administration. Message routing in those networks has become more difficult because of their innate dynamic character combined with restrictions like limited energy power, less bandwidth, wireless communication transmit nature and intervention of signals. Due to infrastructure less dynamic topology, distribution of bandwidth and limitations on resource usage among mobile nodes, the secure data transmission between source and destination is always a challenge. Security is always a critical concern in providing quality of service (QoS) and secure routing in MANET’s since the presence of malicious nodes in the network pose all possible threats to MANETs. Many mechanisms exist and proposed to solve security issues in routing. But all those are complex and not properly addressing the elimination of malicious/selfish nodes. In this article, a new approach collaborative Trust Based Approach (CTBA) is proposed to provide node authentication using trust factor by combining direct and neighbor observations to form resultant collaborative trust before initiating route discovery process for performing data transmission in MANET’s. Simulation results has proved that proposed CTBA approach performs well and fine compared to the routing without nodes trust calculation.KeywordsSecurityDirect observationNeighbor observationCollaborative trustSecure routing