IEEE802.11i中2-步握手过程的安全性分析及应用

基于4-步握手协议在DOS攻击和握手消息丢失问题等方面的缺陷,本文提出2-步握手协议。这两类协议都是通过一个会话密匙来保护握手消息,同时,在移动站点(MS)和接入点(AP)进行密匙确认,并最后使得MS和AP相互认证,但在2-步握手协议中使用序列数来代替4-步握手协议中的随机数,提高了握手的安全性和效率。本文主要对2-步握手在安全性方面的优势进行了分析,并将其应用于WLAN快速切换机制中。与4-步握手协议相比,2-步握手协议明显缩短了切换延时,因此,其在微信语音聊天、视频业务等领域有广阔的应用前景。

The security and applications of the two-way handshake in 802.11i

Based on that the 4-way Handshake protocol in IEEE802.11 is not robust in DoS（Denial of Service） and the handshake messages loss problems, a 2-way handshake protocol is proposed in this paper. Both protocols are used session key to protect the handshake messages,also can provide key confirmation and mutual authentication be-tween a mobile station and access point at the same time. A sequence number is used instead of the random numbers in the 4-way handshake protocol to derive the session key, improve the security and efficiency of handshake. In this paper, in terms of analysis the safety 2-way handshake , and apply it to WLAN fast handover mechanisms. Com-pared with 4-way handshake protocol , the handover latency time in the 2-way handshake protocol is shorten signif-icantly, so its application is very broad in the voice chat of micro-letter , video services and other fields.