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The communication in a clustered WBAN is performed at different levels through multiple nodes and controllers. This kind of multi-level involvement of nodes opens the nodes for security leaks. In this paper, a dual level security is integrated using hybrid cryptography method. A hybrid authentication and cryptography based method is defined for identity and information level security. The hybridization of security for clustered WBAN is achieved using RSA and hash key encoder. The RSA is here applied for node to controller for identification and verification whereas SHA is applied for reliable symmetric message encoding for node-to-controller and controller-to-controller communication. The proposed security model is applied in an integrated form to the clustered WBAN network to improve communication reliability. The proposed secure communication model has improved the performance of the network. The simulation is applied on clustered WBANs with different number of WBANs. The comparative simulation results show that the proposed model has effectively improved the packet communication and network life.

A Hybrid Cryptography and Authentication based Security Model for Clustered WBAN