Trust-based Multi-Path Routing for Enhancing Data Security in MANETs
Poonam Gera, Kumkum Garg, Manoj Kumar Misra · International journal of network security · 2014
Mobile Ad Hoc Networks (MANETs) are comprised of highly mobile nodes that communicate with each other without relying on a pre-existing network infrastructure. Therefore they are ideally suited for use in rescue and emergency operations. Due to their applications in situations such as emergencies, crisis management, military and healthcare, message security is of paramount importance in mobile ad-hoc networks. However, because of the absence of a flxed infrastructure with designated centralized access points, implementation of hard-cryptographic security is a challenging prospect. In an adverse environment, both route discovery and data transmission are vulnerable to a variety of attacks. A misbehaving node can abide well in the route discovery phase and hence be placed on utilized routes. Later, it could tamper with the in-transit data in an arbitrary manner and degrade the network performance. This behavior can be nullifled by securing the data transmission phase. In this paper, we propose a novel method to enhance security in both phases using trust-based multi-path routing. The trustbased multi-path routing ensures secure discovery of multiple path between source and destination. Self-encrypted parts of a message are transmitted through these paths. Therefore it is di‐cult for malicious nodes to gain access to the minimum information required to break through the encryption strategy. Results show that our method is much more secure than other existing trust based multipath routing protocols.