Multi Level Identity based Cryptography for Improved Security in WSN

ABSTRACT Ever since Shamir proposed Identity Based Signature there has been considerable research in improving Identity Based Cryptography for providing security to Wireless Sensor Network communications. IBC could eliminate costly third party certificates and verification process of its predecessor besides making key management simple. With IBC it is possible to use any publicly known identity to generate security keys so as to make it intuitive. In our previous work, we enhanced IBC for efficient key management and applied it to group key management. In this paper we proposed Multi-level Identity Based Cryptography (MIBC) for the first time and explored its utility in maximizing security in WSN. Precisely, the multi-level identity based cryptography proposed by us can be used for secure digital authentication which brings about high level of system security. Our extensive simulations reveal that the proposed scheme is flexible, scalable and provide high level of security to communications in WSN.