基于XTR公钥密码体制的群组密钥协商协议设计  

Design of Group Key Agreement Protocol based on XTR Public Cryptosystem

作　　者：宋曦[1] 邓志森[2] 熊志杰[2] 

机构地区：[1]国网四川省电力公司科技信息通信部,四川成都610041 [2]国网四川省电力公司调度控制中心,四川成都610041

出　　处：《信息安全与通信保密》2013年第12期140-144,共5页Information Security and Communications Privacy

摘　　要：群组密钥协商协议是网络中最基本的安全协议之一,相比两方密钥协商协议显得更为复杂,因此,如何设计安全、简洁、高效的群组密钥协商协议成为网络安全中的一个重要问题。文中使用XTR公钥密码体制设计了一个群组密钥协商协议,该协议通过对迹函数的有效计算,获得了3倍的密钥压缩比,减少了协议的通信量。与同类协议相比,具有密钥长度小、安全性高、发送消息少的优点。Group key agreement protocol（GKA） is one of the most primary secure mechanisms, which is far more compli- cated than the traditional two-party agreement protocol. So how to design secure and efficient concise GKA protocol becomes an important issue in the laetwork security field. In this paper ,the XTR（ efficient and compact subgroup trace representation,XTR） public cryptosystem is applied to propose the new GKA protocol for 3 times the key compression ratio through effective calculation method of trace,the amount of communication traffic is reduced. Compared with the similar protocols, the new protocol has the advantages of smaller key, higher security level and less sending/receiving messages.

关 键 词：群组密钥协商协议 XTR公钥密码体制 迹函数 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]