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A Distributed Scheme for Securing Middle-Tier Multicast in Hierarchical Sensor Networks
Jie Tian, Guiling Wang, Tan Yan and Wensheng Zhang

Hierarchical architectures are more and more widely adopted for organizing wireless sensor networks. In such architectures, middle-tier nodes take important roles, and preventing a malicious node from impersonating a middle-tier node and injecting falsified messages becomes critical. In this paper, we propose an energy efficient, distributed scheme to secure the multicast messages from the middle-tier nodes. Our scheme does not require a priori knowledge about the hierarchical relation between middle tier nodes and lowest-tier nodes, and is adaptive to changes of this relation. Extensive simulations are conducted to evaluate our scheme, and the results show that the scheme is energy efficient.

Keywords: Security, hierarchical architectures, distributed scheme

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