摘要
采用业务分组的方法降低业务密钥量;在密钥层次管理基础上,提出了密钥霍夫曼分层方法,利用该方法可以获得最优的层次密钥管理性能,并推导得出了层次密钥管理的密钥存储量和分发效率的理论极限;最后说明结合业务分组和密钥Huffman分层将得到高性能的密钥管理系统。
A scheme of grouping services is proposed to decrease the service key. On basis of hierarchical key management, this paper puts forward a method of Huffman hierarchical key management, whose performance is optimal. And also, the theory limit of the number of key per user and key distribution efficiency is provided. At last, this paper proves that key management system has a high performance when grouping services and hierarchical key management are combined.
出处
《通信学报》
EI
CSCD
北大核心
2003年第5期114-120,共7页
Journal on Communications
基金
国家教育部高校骨干教师资助项目(2992)
陕西省自然科学基金资助项目(D7010144)
