自主群密钥更新模型研究  

An autonomic rekeying model for group key management

作　　者：孙丽艳[1] 周森鑫[1] 周健[1,2] 

机构地区：[1]安徽财经大学管理科学与工程学院,安徽蚌埠233041 [2]北京邮电大学计算机学院,北京100083

出　　处：《计算机工程与科学》2016年第3期471-477,共7页Computer Engineering & Science

基　　金：国家自然科学基金(61402001);安徽省高校自然科学研究项目(KJ2013B001);安徽财经大学校级重点科研课题(ACKY1517ZDB))

摘　　要：针对分布式网络群组密钥更新中非更新成员参与共享密钥计算增加交互延时问题,提出一种自主密钥更新模型,通过DH协议和多项式设计一种自主群组密钥管理方案,具有单加密密钥多解密密钥加密解密性质。更新过程中,更新成员本地自主更新公开加密密钥,无需在线KMC支持,保护非更新成员解密密钥的有效性,减少密钥更新延时和非更新成员的计算开销,具有自主密钥更新模型的性质,适用延时受限的无线网络场景。In group key management of distributed wireless networks,non-update members take part in shared key calculation,which incurs much interactive time delay.To deal with the challenge,we present a novel autonomic rekeying model,and then an autonomic group key management is designed on basis of DH protocol and polynomial formula without support of online KMC,which meets the requirement of one-encryption-key multi-decryption-key.All non-update members do not participate in rekeying for key joining/leaving operations,and the fresh public encryption keys cannot break the validity of secret decryption keys belonging to non-update members.Therefore,the rekeying delay time of the proposed scheme is reduced efficiently,and it also has the properties of the autonomic rekeying model logically.In addition,the scheme is suitable for wireless networks whose time delay is limited strictly.

关 键 词：群组密钥管理 密钥更新模型 自主 更新延时 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]