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Pairings-Based Protocol for Group Key Agreement

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【作者】 李明； 王勇； 谷大武； 白英彩；

【Author】 LI Ming1, WANG Yong2, GU Da-wu1, BAI Ying-cai1(1.Department of Computer Science and Engineering, Shanghai Jiaotong University, Shanghai200030, China;2.School of Computer Software, Beijing Institute of Technology, Beijing100081, China)

【机构】 Department of Computer Science and Engineering； Shanghai Jiaotong University； Shanghai200030； China； School of Computer Software； Beijing Institute of Technology； Beijing100081； China；

【Abstract】 An authenticated group key agreement protocol suite (PAGKA) based on pairings is presented in this paper. This suite extends an efficient Diffie-Hellman-based protocol suite by introducing parings on elliptic curves and public-key certificates. The result suite builds its security on the hardness of the bilinear Diffie-Hellman (BDH) problem in the random oracle model, and provides implicit key authentication, perfect forward secrecy and unknown key-share secrecy.

【关键词】 key agreement； authentication；