Dynamic tree-based authenticated group key exchange protocol  

作　　者：LI Hui WU ChuanKun TENG JiKai 

机构地区：[1]State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China [2]Graduate University of Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Science China(Information Sciences)》2010年第8期1591-1602,共12页中国科学（信息科学）（英文版）

基　　金：supported by the National Basic Research Program of China (Grant No. 2007CB807902);the Knowledge Innovation Project of the Chinese Academy of Sciences (Grant No. YYYJ-1013);the National Natural Science Foundation of China (Grant No. 60903210)

摘　　要：Authenticated group key exchange protocols allow a group of users over a public network to establish a shared secret key for the subsequent cryptographic goals. In this paper, we extend BD-II scheme into a dynamic setting, and propose a tree-based authenticated key exchange protocol which is more suitable for dynamic groups in such as ad hoc networks. Our protocol is proven secure in random-oracle model. Additionally, we analyze the costs of our protocols in both communication and computation terms, and compare its performance with three well-known protocols.

关 键 词：tree-based group key exchange dynamic provable security 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术] TP311.12[自动化与计算机技术—计算机科学与技术]