基于LKH的组播密钥分发改进方案R-LKH  

R-LKH: An Improved Multicast Key Management Scheme Based on LKH

作　　者：宣文霞[1] 窦万峰[1] 

机构地区：[1]南京师范大学数学与计算机科学学院,江苏南京210097

出　　处：《微电子学与计算机》2006年第10期213-216,共4页Microelectronics & Computer

基　　金：江苏省高校自然科学基金项目(04KJD520106)

摘　　要：随着Internet的发展,组播技术得到了广泛的应用,其中组密钥管理是组播安全的核心问题。分析了已有密钥管理方案的优缺点,特别是被广泛关注的LKH方案,提出了一个基于LKH的密钥管理新方案R-LKH,并给出相应的更新算法。通过对本方案和其他方案的通信开销、密钥存储开销和计算开销的分析表明,该方案可有效降低密钥开销,且具有可行的通信效率,适用于大型的动态群组。Muhicast is broadly applied with the development of the Intemet and group key management will become a critical issue in secure multicast. Some existing schemes were analyzed and the focus is put on the logical key hierarchy （LKH） gained extensive attention and a new key management scheme-R-LKH-is proposed, and its algorithm is designed. Analyses show that it lowers the key storage costs observably and possesses a good communication efficiency, thus is scalable to large dynamic groups, through the comparison of communication costs, key storage and computation complexity between the scheme presented in this paper and other schemes.

关 键 词：安全组播 密钥分配 逻辑密钥层次 R—LKH 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]