Multihop Trust Evaluation Using Memory Integrity in Wireless Sensor Networks

Research efforts in trust evaluation has evolved to provide security in Wireless Sensor Networks (WSNs), while being dependent on external parameters and network topology. Existing node level trust evaluation in WSNs evaluate trust over 1-hop assuring trustworthiness of an immediate node. This paper proposes trust evaluation using the intrinsic property of a node memory over a multihop scenario which also evaluates the route. The work proposes a multihop trust evaluation protocol using TEAM and TEAP algorithms. Two proposed trust evaluation models each are proposed using normative and empirical methods in multihop algorithms. The proposed methodology establishes a trusted destination node along with trusted nodes in the route. The efficacy of the proposed work and its implementation is demonstrated using extensive experiments and the results illustrate consistency and resilience against node memory tampering.