基于服务器组的群组密钥协商机制  

Based on Servers Group Key Agreement Mechanisms

作　　者：张志军[1] 郭渊博[1] 刘伟[1] 金永岗[1] 

机构地区：[1]解放军信息工程大学电子技术学院,河南郑州450004

出　　处：《微电子学与计算机》2008年第9期65-68,71,共5页Microelectronics & Computer

基　　金：国家自然科学基金项目(60503012);国家"八六三"计划项目(2007AA01Z405)

摘　　要：为了解决现有的组密钥协商机制需要组成员在本地全部参与协商,从而严重制约安全群组通信系统可扩展性与高效性的问题,提出一种基于服务器端的密钥协商策略.该机制中,仅需要与每个组成员连接的服务器组间密钥协商,降低了群组的存储开销和通信开销.同时在客户端函数库内通过设计一个单向映射机制实现从服务器组密钥到群组密钥变换.与基于客户端函数库的密钥协商机制相比,其可扩展性及密钥协商效率更高.A group key agreement scheme based on servers was developed to improve the poor scalability and efficiency of most existing group key agreement schemes based on clients which require each group member to participate in group key agreement on secure group communication system.In this scheme,key agreement was completed by only servers which directly connect to group member,which reduces the storage and communication costs of the group.One-way function which mapped from server keys to group keys is designed in client function library.Comparing with key agreement mechanism based on client,it makes a great progress in security and efficiency.

关 键 词：体系结构 安全群组通信 密钥协商 单向函数 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]