摘要
针对802.11i标准为了更新组密钥(GTK),需要与每一终端进行二次握手协议,从而加重AP负担,影响组播通信效率。提出一种基于改进逻辑密钥层次方案(Logical Key Hierarchy,LKH)的GTK更新方案,该方案使用组播方式更新组播密钥,且与802.11i标准兼容,同时将GTK更新信息量由O(n)降至Olog(n),可有效运用于无线局域网(WLAN)中。
To update Group Temporal Key(GTK) in 802.11i,2-way handshake needs to carry out for every client,which worsens the overheads of AP.In allusion to this problem,a new GTK update scheme based on improved Logical Key Hierarehy(LKH) is proposed.This scheme,which updates GTK with multicast and reduces overheads from O (n) to O log (n),is compatible with 802.11i,thus it can be good for implement in WLAN.
出处
《计算机工程与应用》
CSCD
北大核心
2009年第10期116-118,共3页
Computer Engineering and Applications
基金
国家自然科学基金No.60673041~~