Research In Motion
Now-a-days, with the rapid increase of WLAN-enabled mobile devices and the more widespread use of WLAN, it is equally important to have a more efficient initial link setup mechanism. 802.11i is an IEEE standard designed to provide enhanced MAC security in wireless networks. The authentication process involves three entities: the supplicant, the authenticator, and the authentication server. A 4-Way Handshake must be made between the supplicant and the authenticator to derive a pairwise key and/or group key for subsequent data transmissions.