Research and improvement of IEEE802.11i key management program
Haibin Huang · Jisuanji gongcheng yu sheji · 2010
Aiming to 802.11i key management program that can generate PTK and GTK via the way of the four-step handshakes and the multicast handshakes separately,which adds the burden of STA on a large scale and affects the efficiency of the wireless roaming.The key improved-based mechanism is proposed,the improved program uses EAPOL-Key to transmit messages,which not modifying the frame structure,maintaining the 802.11i protocol compatible.It implements a program that distributed PTK and GTK from four-step handshakes and group-key handshakes reduce to four-step handshakes.Studies show that the program reduced the key distribution process and the distribution chain,so the efficiency of key distribution is greatly improved in roaming environment,and the delay of WLAN user access is reduced.