一种新的适合P2P组通信的层次化组密钥协商方案  

Hierarchical Key Agreement Scheme Adapted to P2P Group Communication

作　　者：薛开平[1] 洪佩琳[1] 李津生[1] 杨福荣[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系信息网络实验室,安徽合肥230027

出　　处：《小型微型计算机系统》2007年第8期1393-1396,共4页Journal of Chinese Computer Systems

基　　金：国家自然科学基金重大研究计划(90104011)资助;国家下一代互联网(CNGI)示范工程项目(CNGI-04-12-1D)资助

摘　　要：针对P2P组安全通信密钥协商的特点,在分析传统的BD方案和改进方案IBD的基础上提出一种层次化的密钥协商方案H-IBD.相对于BD方案,IBD方案降低了密钥更新过程中计算和通信开销,但仍然需要全组所有用户参与更新步骤;H-IBD方案通过提出一种"类树"的层次结构进一步降低了密钥更新过程的计算和通信开销.计算、通信开销和安全性分析进一步表明H-IBD是适合于P2P组安全通信的组密钥协商方案.According to the characteristics of secure group communication key agreement in P2P. This paper presented a hierarchical key agreement scheme H-IBD based on the analysis of traditional scheme BD and improved scheme IBD. Compared with BD scheme,IBD scheme cuts down the overhead of calculation and communication during re-key process, however it still requires all users join in all of the re-key process. By using a 'like tree' hierarchy, H-IBD scheme further reduces the above overhead. Depth analysis shows that H-IBD scheme is rather appropriate for Secure Group Communication Key agreement in P2P.

关 键 词：PEER to PEER 组通信 密钥协商 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]