Privacy preserving mutual authentication in WiMAX

A wireless network is more vulnerable than a wired network due to the broadcast nature of wireless medium. The nodes in a WiMAX network require authentication over this shared wireless channels. The existing EAP authentication mechanism requires multiple message exchanges and is not privacy preserving. In this work, an infrastructure aided mechanism for mutual authentication of a node and base station that preserves the privacy of the node is proposed for WiMAX networks. Simulation results indicate that the performance of the proposed protocol satisfies the needs and constraints of WiMAX network. The time taken for authentication is in the order of milliseconds which constitutes only in one transaction between node and base station.

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