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Abstract: Secure group communication in heterogeneous environment is gaining popularitydue to the advent of wireless and ubiquitous computing. Although a number ofprotocols for group key agreement have been proposed, most of them are notapplicable in heterogeneous environment where a number of computationallylimited nodes coexist with one or more computationally efficient nodes. Amongthe few existing protocols, where some fail to satisfy the key agreementproperties, some are unable to handle the agreement for dynamic group. In thiswork, we propose a constant round group key agreement protocol forheterogeneous environment using polynomial interpolation. The protocol ensuresboth communication and computation efficiency by shifting the major computationload on powerful users, achieves true contributory key agreement property anddynamic handling of user join and leave. The security of the protocol has beenanalyzed under formal model. The comparison result shows considerableimprovement in protocol efficiency compared to the existing ones.



Author: Mounita Saha, Dipanwita Roy Chowdhury

Source: https://arxiv.org/







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