基于单向函数树的多播密钥安全性分析  

Security Analysis of a Key for Multicast Based on the One-way Function Tree

作　　者：郑晓丽[1] 姜迪刚[2] 

机构地区：[1]军事体育进修学院保密法规教研室,广东广州510502 [2]中山大学(北校区)计算机中心,广东广州510080

出　　处：《信息安全与通信保密》2007年第5期127-128,130,共3页Information Security and Communications Privacy

摘　　要：文章对SMuG草案之一的基于单向函数树(OFT)的密钥管理方案的安全性进行了详细分析,指出OFT方案在实现前向安全和后向安全上的漏洞,提出了可以实现完整的前向安全和后向安全的OFT改进方案。Multicast is the basis for many new applications in the internet, and key management is one of the key research areas of multicast security.We particularly analyze the secrity of the key management scheme based on the one-way function tree（OFT）, which is one of the drafts of SMUG, and point out the vulnerabilities in providing forward security and backward security. An improved scheme for providing real forward security and backward security is also proposed.

关 键 词：单向函数树 多播安全 密钥管理 前向安全 后向安全 

分 类 号：TN918.1[电子电信—通信与信息系统]