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A Study on Dynamic Key Management in Mixed-Mode Wireless LAN  

강유성 (한국전자통신연구원 정보보호연구단)
오경희 (한국전자통신연구원 정보보호연구)
정병호 (한국전자통신연구원 정보보호연구)
정교일 (한국전자통신연구원 정보보호연구)
양대헌 (인하대학교 정보통신대학원)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.4C, 2004 , pp. 581-593 More about this Journal
Abstract
The interest in wireless LAN security is on the increase owing to a role of high-speed wireless Internet infrastructure of wireless LAN. Wi-Fi has released WPA standard in order to overcome drawbacks of WEP algorithm that is security element of current IEEE 802.11-based wireless LAN system. Pairwise key management and group key management in a mixed-mode which supports both terminals running WPA and terminals running original WEP security are very complicate. In this paper, we analyze flaws in WPA authenticator key management state machine for key distribution and propose the countermeasures to overcome the analyzed problems. Additionally, WPA authenticator key management state machine to which the solutions are applied is described. The reconstructed WPA authenticator key management state machine helps the AP perform efficiently group key exchange and group key update in the mixed-mode.
Keywords
mixed-mode wireless LAN; key management; wireless LAN security; WPA;
Citations & Related Records
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  • Reference
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