哈尔滨工业大学学报（英文版）2006，Vol.13Issue(5)：607-612,6.
An efficient scalable key management scheme for secure group communication
An efficient scalable key management scheme for secure group communication
摘要
Abstract
Several multicast key management schemes such as those proposed by Wallner et al and Wong et al are based on a multilevel, logical hierarchy (or tree) of key-encrypting keys. When used in conjunction with a reliable multicast infrastructure, this approach results in a highly efficient key update mechanism in which the number of multicast messages transmitted upon a membership update is proportional to the depth of the tree,which is logarithmic to the size of the secure multicast group. But this is based on the hypothesis that the tree is maintained in a balanced manner. This paper proposes a scalable rekeying scheme-link-tree structure for implementing secure group communication. Theoretical calculation and experimentation show that this scheme has better performance than the tree structure and the star structure, and at the same time still keep the link-tree structure balanced.关键词
group security/key management/rekeyKey words
group security/key management/rekey分类
信息技术与安全科学引用本文复制引用
ZHANG Jun,GU Da-wu,MA Fan-yuan,BAI Ying-cai..An efficient scalable key management scheme for secure group communication[J].哈尔滨工业大学学报（英文版）,2006,13(5):607-612,6.基金项目
Sponsored by the National Natural Science Foundation of China ( Grant No. 60203012 ) and Shanghai Rising-Star Program in Science and Technology ( Grant No. 02QD14027). （ Grant No. 60203012 ）
