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Secure and Efficient Multicast in Wireless Sensor Networks Allowing Ad hoc Group Formation

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4 Author(s)
Kui Ren ; Dept. of Electr. & Comput. Eng., Illinois Inst. of Technol., Chicago, IL ; Wenjing Lou ; Bo Zhu ; Jajodia, S.

Multicast security is one of the most important security services in wireless sensor networks (WSNs) since it enables a sink to multicast messages to sensors in a secure manner. While multicast authentication has widely been addressed in the literature, the problem of multicast encryption still remains open in WSNs. In this paper, we propose a multicast encryption scheme called global-partition, local-diffusion (GPLD) that focuses on scheme efficiency and supports various multicast group semantics. GPLD partitions sensors into a series of elementary groups using their location and class information and accordingly builds a location-class-aware symmetric key management framework. Furthermore, the scheme leverages the fact that sensors are both end receivers and routers, which effectively minimizes global (sink-to-sensor) group key distribution and rekeying traffic while supporting various multicast group semantics. The efficiency and security properties of GPLD are justified through both analysis and simulations.

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Vehicular Technology, IEEE Transactions on  (Volume:58 ,  Issue: 4 )