一种高效的Wimax安全组播密钥管理方案

A Efficient Key Management Scheme in Secure Multicast for Wimax

组播密钥管理是Wimax组播服务安全的核心问题,为了适应大型Wimax组中成员频繁进出的情景,文中在"多重秘密共享"和"秘密组播机制"的基础上,设计了一种新的适合于周期密钥更新策略的Wimax安全组播密钥管理方案SGMBM,该方案根据组中成员关系的动态变化来分发管理密钥。和已有经典方案的对比结果显示,SG-MBM获得了更少的组密钥更新数量和能量消耗,并保证了前向和后向安全性。

Group key management is a core issue of secure muhicast for Wimax. In order to adapt frequent operations of members in the large Wimax groups, based on the basis of ＂multiple secret sharing＂ and ＂secret multicast mechanism＂, this paper designed a new kind of rekeying scheme in secure multicast for Wimax, which is suitable for period rekeying strategy named SGMBM. Finally the security of the scheme was proved. Simulation results showed it has fewer group key update frequencies and energy consumption, and obtains the forward and backward security.