Research on authenticated key agreement in group settings

Authors:
Li Ming;Gu Dawu;Wang Yong;Bai Yingcai
Affiliations:
Shanghai Jiao Tong University, Shanghai, China;Shanghai Jiao Tong University, Shanghai, China;Beijing Institute of Technology, Beijing, China;Shanghai Jiao Tong University, Shanghai, China
Venue:
InfoSecu '04 Proceedings of the 3rd international conference on Information security
Year:
2004

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Abstract

An enhanced definition of implicit key authentication and a secure group key agreement scheme from pairings are presented. This scheme combines the merit of group public key and key trees to achieve a communication-efficient and authenticated group key agreement protocol. Besides, it avoids dependence on signature or MAC by involving member's long-term keys and short-term keys in the group key. Furthermore, the idea behind this design can be employed as a general approach to extend the authenticated two-party Diffie-Hellman protocols to group settings.