A MULTICAST KEY MANAGEMENT SCHEME BASED ON CHARACTERISTIC VALUES OF MEMBERS  

作　　者：Du Xiaoqiang Bao Wansu Fu Xiangqun 

机构地区：[1]Institute of Electronic Technology, PLA Information Engineering University, Zhengzhou 450004, China [2]Unit 95019 of the PLA, Xiangyang 441800, China

出　　处：《Journal of Electronics(China)》2012年第3期294-301,共8页电子科学学刊（英文版）

摘　　要：A new collusion attack on Pour-like schemes is proposed in this paper. Then, we present a collusion-free centralized multicast key management scheme based on characteristic values of members. The re-keying method that other group members calculate new keys when a member is joining or leaving is also designed. It achieves forward secrecy and backward secrecy. Compared with typical existing centralized schemes, the storage of Group Key Controller (GKC) in our scheme halves the storage overhead of others, and communication overhead of GKC is 2 in case of joining re-keying. Especially, the leaving re-keying overhead is and the overall performance is excellent.A new collusion attack on Pour-like schemes is proposed in this paper. Then, we present a collusion-free centralized multicast key management scheme based on characteristic values of members. The re-keying method that other group members calculate new keys when a member is joining or leaving is also designed. It achieves forward secrecy and backward secrecy. Compared with typical existing centralized schemes, the storage of Group Key Controller （GKC） in our scheme halves the storage overhead of others, and communication overhead of GKC is 2 in case of joining re-keying. Especially, the leaving re-keying overhead is log2 n, and the overall performance is excellent.

关 键 词：Security multicast Key management Characteristic values COLLUSION Re-keying 

分 类 号：TN918.1[电子电信—通信与信息系统]