Defending Wormhole Attack using Cryptographic Routing Technique

The wireless communication networks frequently replace the traditional wired networks. Due to its low cost of installation and easy maintenance. The wireless networks allow a user to join the network and consume the services network services. Additionally, that also allows moving the user in any direction randomly. Mobile ad hoc network is similar kind of network where the devices working as both sender and receiver. In this network, the device to device communication is possible by the relaying communication, therefore, an intermediate host always becomes a part of communication. If the intermediate host is not trusted then it can be altered or modify the messages transmitted towards the designation host. Therefore a mechanism is required to enhance the current communication technique in mobile ad hoc network. Therefore, in this presented work, the security in ad hoc networks is investigated, the investigation leads to find a solution for wormhole attack. In this attacker, a group of attackers is deployed in the network and harm the privacy and security of the network. Therefore a solution with the cryptographic manner to prevent the information forwarded to the destination is proposed. The second contribution of the work is to prepare a technique by which the wormhole nodes are prevented in the network. In this approach, the watch dog method is used for identifying the malicious host in the network and tries to boycott using the presented method during the route discovery. The implementation of the proposed work is performed on the basis of the NS2 network simulator and the generated trace files are used for performance evaluation of the work. The performance of the proposed routing protocol is evaluated in terms of end to end delay, throughput, packet delivery ratio, and packet drop ratio. Additionally to justify the solution the proposed routing protocols performance is compared with the traditional EAACK and the AODV routing protocol during the attack conditions. According to the experimental results, the performance of the proposed routing protocol is found optimum and adaptable for both security and performance issues in the network.