Trust Management for Wsn

In: Computers and Technology

Submitted By manu4byu
Words 4339
Pages 18
International Journal of Computer Trends and Technology- volume3Issue2- 2012

Behaviour based Trust Management using geometric mean approach for Wireless Sensor
Networks
Ch.Satya Keerthi.N.V.L*1, A.Manogna#2, Ch.Yasaswini#2, A.Aparna#4 , S.Ravi Teja#5
* Lecturer, Department of Information science and Technology
#

Department of Information science and Technology,
KL University, Guntur – 522 502, Andhra Pradesh, India

Abstract — The resource constraints of Wireless Sensor
Network (WSN) make it easy to attack and hard to protect.
Although carefully designed cryptography and authentication help to make WSN securer, they are not good at dealing with compromised node and ageing node, whose misbehavior may impair the function of WSN. Hence, they are not sufficient for secure routing of message from source to destination in WSNs.
Alternatively Trust management schemes provide a powerful tool for the detection of unexpected node behaviours. A solution is obtained by first figuring out the malicious nodes in the network and then separating them from the benevolent nodes present on the basis of trust levels assigned. In this paper, we propose a new Trust Management System by considering the behaviours of sensor nodes, direct and indirect trusts based on
Geometric Mean (GM) of the QoS characteristics (trust metrics) among the nodes, which allows for trusted nodes only to participate in routing messages.
Keywords—Wireless Sensor Network (WSN), Geometric
Mean (GM), Trust Metrics, Quality of Services (QoS).

I. INTRODUCTION
Wireless Sensor Networks (WSNs) are ad-hoc networks, consisting of spatially distributed devices (motes) using sensor nodes to cooperatively monitor physical or environmental conditions at different locations. A sensor node is a tiny and simple device with limited computation and resources. Sensor nodes are randomly and…...

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