【摘要】 该文提出了一种利用超奇异椭圆曲线上的TatePairing进行密钥协商的分布式群组密钥管理机制。该机制的通信开销随成员数目的增加而增长的幅度可忽略,3阶B-树的使用使得其计算开销为O(log3n)。它提供的安全属性包括群组密钥保密性、前向保密和后向保密。从性能和安全性两方面来看,该机制适用于高延迟网络中的大型群组。更多还原

【Abstract】 A distributed group key management scheme,which makes use of Tate Pairings on super-singular elliptic curves,is presented.The communication cost of it doesn’t increase with the increasing of group members.The computational cost is O(log3n) as the result of using 3-ary B-tree as the key tree.The scheme provides group key secrecy,forward secrecy and backward secrecy.In view of performance and security attributes,it can work well for large group applications in high delay networks.更多还原