Trust Based Data Security and Secure Anonymous Routing For MANETs

For many applications of the mobile ad hoc networks (MANETs) deployed in adversary environments, anonymous communications with data confidentiality and integrity is important. A major requirement is to provide unidentifiability and unlinkability to the mobile nodes and their traffics.The existing protocols are vulnerable to security threats like global eavesdropper attacks, fake routing packets attacks or denial-of-service (DoS) broad-casting attacks, traffic analysis attacks and insider attacks. In this paper we propose a new routing protocol which is an extension of the existing protocol Authenticated Anonymous Secure Routing (AASR) protocol. AASR defends the attacks and provides sufficient anonymity with the help of group signature and key encrypted onion routing. In this work a unified trust management scheme has been integrated with AASR protocol in order to enhance the routing and data security in MANETs. Simulation results have demonstrated the effectiveness of the proposed protocol with improved performance in terms of throughput, packet received ratio, packet loss ratio and delay when compared to the existing ones. Keywords-trust based AASR; TAASR; secure routing; bayesian inference; uncertain reasoning; unlinkabilitiy; unidentifiability; MANET