计算机工程与应用2011，Vol.47Issue(31)：101-103,137,4.DOI:10.3778/j.issn.1002-8331.2011.31.028
多播通信中批量密钥更新策略的研究
Research on batch rekeying strategy in multicast communication
摘要
Abstract
In order to offer security for multicast applications, the group key has to be changed whenever a user joins or leaves the group.Batch rekeying alleviates the problems of inefficient and out-of-sync which are brought by individual rekey-ing.But the batch re-keying ignores the change probability of members.Even in an update cycle.no membership changes or some members change only in a sub-tree,the group manager must update all the keys,therefore will increase the overhead of group rekeying and communication costs.The paper proposes the triggered batch re-keying based on the six-probability-optimization key-tree which is constructed according to the users' change probabilities.The paper also proves that this approach further reduces the overhead of group re-keying and communication costs, improves scalability of group members and adapts better to the dynamic changes in multicast group membership through performance analysis and simulation experiments.关键词
安全多播/密钥更新/批量更新/多级密钥树/概率组织Key words
secure multicast/ rekeying/ batch rekeying/ multi-level-key/ probabilistic organization分类
信息技术与安全科学引用本文复制引用
朱晓伟,许勇,赵欢欢..多播通信中批量密钥更新策略的研究[J].计算机工程与应用,2011,47(31):101-103,137,4.基金项目
安徽省自然科学基金(the Natural Science Foundation of Anhui Province of China under Grant No.11040606M 137). （the Natural Science Foundation of Anhui Province of China under Grant No.11040606M 137）
