IEEE 802.11i GTK update scheme based on improved Logical Key Hierarchy
Xizhao Luo · Computer Engineering and Applications Journal · 2009
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 Hierarchy(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.