Ad hoc网络中基于双线性配对的STR组密钥管理协议研究  

Research of STR multicast key management protocol based on bilinear pairing in ad hoc network

作　　者：周福才[1] 徐剑[2] 徐海芳[1] 刘泽超[1] 

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110004 [2]东北大学软件学院,辽宁沈阳110004

出　　处：《通信学报》2008年第10期117-125,共9页Journal on Communications

基　　金：国家高技术研究发展计划("863"计划)基金资助项目(2001AA115300);辽宁省自然科学基金资助项目(20031018;20062023)~~

摘　　要：STR组密钥管理协议具有较好的计算、通信和存储代价,但在安全性方面,由于没有提供密钥认证,不能抵御主动攻击。在分析STR协议基础上,引入双线性配对密码体制和三叉密钥树来实现组密钥管理,提出PSTR(bilinear pairing-based STR)协议,其中包括密钥产生过程及其6个子协议,对PSTR协议安全性进行分析,证明了PSTR协议在计算上是安全的。分析与比较了PSTR协议和STR协议的性能,结果表明PSTR协议在通信代价、计算代价和存储代价均优于STR协议,因此PSTR协议是ad hoc环境下一种新型、可靠的组密钥管理协议。STR multicast key management protocol has an optimal cost m computation, communication and storage. But on security property, STR cannot resist active attacks without providing key authentication. By introducing the bilinear pairing cryptosystem and the 3-ary key tree, the improved STR protocol which is called PSTR （bilinear pairing-based STR） was proposed. The key generation process and six basic sub-protocols were included in the protocol. Through proving the bilinear form of PSTR key tree, the security of the PSTR in computation was proved. Finally PSTR were compared with STR through performance analysis, the results of which show that： PSTR is more efficient than STR in the communication cost and the computation cost as well as the storage requirement. Therefore, PSTR is a novel, reliable group key management protocol, and is well-suited for Ad hoc networks.

关 键 词：AD HOC网络 多播密钥管理 双线性配对 PSTR 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]