Abstract: With recent advances in wireless technologies and mobile devices, mobile ad hoc networks (MANETs) have become popular as a key communication technology in military tactical environments. The distinctive features of MANETs such as open wireless transmission medium, nomadic and distributed nature make it vulnerable to many security attacks. In this paper we propose a unified trust management scheme that enhances the security in MANETs. In the proposed trust management scheme, the trust model has two components: trust from direct observation and trust from indirect observation. With direct observation, the trust value of an observed node is derived directly by the observer node based on the opinion of observer node alone . On the other hand, with indirect observation, also called second hand information, the trust value of an observed node is obtained from neighbour nodes of the observer node. Combining these two components in the trust model, we can obtain more accurate trust values of the observed nodes in MANETs. We then evaluate our scheme under the scenario of MANET routing. Extensive simulation results show the effectiveness of the proposed scheme. Specifically, throughput and packet delivery ratio can be improved significantly with slightly increased average end-to-end delay and overhead of messages.
Keywords: MANETs, Security, Trust Management, Uncertain Reasoning.
Title: An Unified Trust Management Scheme for Enhancement Of Security In MANETs
Author: Bharathchandar, M., Vigneshwaran, S., Vishal, R., Vishalraj, M., Mrs. Nithya, D
International Journal of Electrical and Electronics Research
ISSN 2348-6988 (online)
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