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Scalable Group Key Agreement using Key Tree in Mobile Environment

Journal: International Journal of Scientific Engineering and Science (Vol.2, No. 1)

Publication Date:

Authors : ;

Page : 46-51

Keywords : Computational Diffie-Hellman assumption: group key agreement: hierarchical key tree: multicast;

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Abstract

This paper proposes an efficient group key agreement protocol in a mobile environment where group members frequently join and leave. This protocol consists of basic protocols and general ones and is expected to be suitable for communications between a mobile device with limited computing capability and a key distributing center (or base station) with sufficient computing capability. Compared with other schemes, the performance of the proposed protocol is a bit more efficient in the aspects of the overall cost for both communication and computation where the computational efficiency of the scheme is achieved by using exclusive or operations and a one-way hash function. Also, in the aspect of security, it guarantees both forward and backward secrecy based on the computational Diffie-Hellman (CDH) assumption so that secure group communication can be made possible.

Last modified: 2018-03-10 16:53:45