IEEE 802.11i GTK update scheme based on improved Logical Key Hierarchy

doi:10.3778/j.issn.1002-8331.2009.10.035

Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (10): 116-118.DOI: 10.3778/j.issn.1002-8331.2009.10.035

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IEEE 802.11i GTK update scheme based on improved Logical Key Hierarchy

HAN Ping^1,2,ZHU Yan-qin^1,2,LUO Xi-zhao^1,2

1.School of Computer Science and Technology，Soochow University，Suzhou，Jiangsu 215006，China
2.Key Lab of Computer Information Processing Technology of Jiangsu Province，Suzhou，Jiangsu 215006，China

Received:2008-02-18 Revised:2008-04-28 Online:2009-04-01 Published:2009-04-01
Contact: HAN Ping

基于逻辑密钥树的IEEE802.11i GTK更新方案

韩平^1,2,朱艳琴^1,2,罗喜召^1,2

1.苏州大学计算机科学与技术学院，江苏苏州 215006
2.江苏省计算机信息处理新技术重点实验室，江苏苏州 215006

通讯作者: 韩平

Abstract

Abstract: 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.

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O log（n），可有效运用于无线局域网（WLAN）中。

HAN Ping^1,2,ZHU Yan-qin^1,2,LUO Xi-zhao^1,2. IEEE 802.11i GTK update scheme based on improved Logical Key Hierarchy[J]. Computer Engineering and Applications, 2009, 45(10): 116-118.

韩平^1,2,朱艳琴^1,2,罗喜召^1,2. 基于逻辑密钥树的IEEE802.11i GTK更新方案[J]. 计算机工程与应用, 2009, 45(10): 116-118.

IEEE 802.11i GTK update scheme based on improved Logical Key Hierarchy

基于逻辑密钥树的IEEE802.11i GTK更新方案

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