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| A Pairing-Based Group Key Agreement Protocol and Its Analysis |
| Zhang Hua①; Chen Zhi-xiong②; Xiao Guo-zhen① |
| ①National Key Lab of Integrated Service Network , Xidian University, Xi’an 710071, China;②Department of Mathematics, Putian University, Putian 351100, China |
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Abstract This paper proposes a pairing-based group key agreement protocol based on Shim’s certification-based tripartite key agreement protocol. This protocol adopts a pseudo-random sequence to avoid the unknown key-share attack and the known-key attack. Some attacks described in the literatures are presented, which proved infeasible in the protocol. And this protocol can achieves the forward security and backward security, when a dynamic group performs it.
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Received: 12 July 2004
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2006, Vol. 28 
