Based on analyzing three representative multicast rekeying scheme,such as LKH,OFT and OKD,in this paper,a M-di-mensional geometry sphere rekeying scheme for dynamics multicast is put forward.In this new scheme,GC (Group Key Controller) can utilize the cooperation of sibling nodes by one common father,when multicast rekeying,by this way,the communication effi-ciency is improved,and the computing spending and memory spending isn't increased,at the same time forward and backward securi-ty is ensured.Based on M-dimensional geometry sphere rekeying scheme,This paper is put forward a batch rekeying ...
