基于椭圆曲线的分布式组播密钥管理方案  

Distributed Multicast Key Management Scheme Based on Elliptic Curve Cryptosystem

作　　者：徐守志[1] 杨宗凯[1] 谭运猛[1] 

机构地区：[1]华中科技大学电子与信息工程系,湖北武汉430074

出　　处：《小型微型计算机系统》2006年第4期651-654,共4页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(90104033)资助

摘　　要：分布式安全组播在互联网上有广泛的应用,但密钥生成和密钥更新的计算开销以及密钥带宽是主要的制约因素.本文提出基于椭圆曲线加密的组共享密钥生成机制,并将其应用到组播中提出两种分布式安全组播方案.组共享密钥嵌入所有用户的私钥,安全性高,与已有的技术相比,在同等安全强度下,计算开销和带宽开销较小,组共享密钥更新效率高.Distributed secure multieasting is becoming very popular on the Internet. However, it presents several challenges, mainly in key bandwidth and overheads of key generation and rekeying. We propose a shared key mechanism based on ECC, and apply it to multicast to bring forward two distributed multieast schemes, which are high secure for secret keys of all members are embedded in. To compare with several previous works, the costs are smaller but rekeying efficiency higher at same secure strength.

关 键 词：安全组播 分布式组播 组密钥管理 椭圆曲线 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]