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组播密钥管理中一种新的密钥更新策略
A New Rekeying Policy for Multicast Key Management
【摘要】 为节约存储空间和整体处理时间,首先基于KOR提出一种新的密钥更新策略和协议(KOR+),并与KOR作了比较。其次,在密钥树是满和平衡的条件下,对采用KOR+及UOR策略的密钥服务器分别建立平均加密代价公式。最后,用解析方法导出它们的最优密钥树度数。
【Abstract】 Based on KOR a new rekeying strategy and protocol(called KOR~+) are first proposed and compared with KOR in this paper.Then two formulae of the average encryption costs of a key server utilizing KOR~+ and UOR are established respectively provided that the key trees are full and balanced.Finally,optimal key tree degrees are deduced analytically for both of them.
【关键词】 组播安全;
组密钥管理;
密钥树;
度数;
优化;
【Key words】 Multicast Security; Group Key Management; Key Tree; Degree; Optimization;
【Key words】 Multicast Security; Group Key Management; Key Tree; Degree; Optimization;
【基金】 国家自然科学基金资助项目(60573050);北京市优秀人才培养专项基金资助项目(20042D0500103)
- 【文献出处】 计算机应用研究 ,Application Research of Computers , 编辑部邮箱 ,2006年08期
- 【分类号】TN918.1
- 【下载频次】106