摘要
密钥更新效率是影响组播安全性能的重要因素 ,将密钥组织成密钥逻辑树 ,对密钥树进行周期性批更新是提高密钥分发效率、降低密钥管理系统和用户负担的有效途径 .本文提出一种密钥批更新算法 ,利用该算法可以进一步降低密钥更新对密钥管理系统和用户的负担 ;
The efficiency of re-keying is a main factor that influences the performance of secure multicast.Grouping keys into logical tree and periodic batch re-keying for users join/leave are effective ways to improve the efficiency of re-keying and reduce the burden that re-keying puts on key management as well as users.In this paper,we present a re-key algorithm which reduces the burden that re-keying put on key management system and users.We then investigate the performance of batch re-keying using our algorithm.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2003年第7期1046-1048,共3页
Acta Electronica Sinica
基金
国家教育部高校骨干教师资助项目
陕西省自然科学基金 (No 2 0 0 2f0 8)
关键词
组播
密钥分发
密钥树
指数分布
multicast
key distribution
key tree
exponential distribution
