一种适合大型动态多播的密钥管理方案  

Key management scheme for large and dynamic multicast groups

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：《计算机应用》2006年第6期1334-1336,1339,共4页journal of Computer Applications

基　　金：江苏省高校自然科学基金项目(04KJD520106)

摘　　要：分析了已有基于两层结构的密钥管理方案的优缺点,在此基础上综合了上述方案和PE方案的特点,提出了一个新的密钥管理方案,并给出了相应的更新算法。通过对本方案和其他方案的密钥存储量、加密计算量、网络通信量等性能的分析结果表明,该方案在组控制器和子组控制器方面都具有良好的通信效率、较低的计算开销和可扩展性,适用于大型的动态多播环境。Some existing key management schemes based on two-layered architecture were analyzed and their pros and cons were discussed. On the basis of integrating the characters of these methods and PE scheme, a new key management scheme was proposed and its rekey algorithm was designed. Through the comparison of key storage cost, computation complexity and communication efficiency between the scheme presented in this paper and other schemes, it is show that this scheme possesses a good communication efficiency and scalability, and it lowers the computation cost, thus can be applied to large multicast group.

关 键 词：多播 组密钥 域内组密钥管理协议 逻辑密钥层次 多项式展开 密钥管理方案 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]