Abstract
With the increasing demands for fast and secure wireless link connections to the access points (APs) supporting large quantities of devices in wireless local networks (WLANs), Fast Initial Link Setup (FILS) has been proposed. It is the initial link setup mechanism specified in IEEE 802.11ai, which is a new amendment to IEEE 802.11 standard family to support massively deployed wireless nodes. However, security concerns on the link connection have not been fully eliminated, especially for the authentication process. For example, a type of recently revealed malicious attack, Key Reinstallation Attack (KRA) might be a threat to the FILS authentication. To prevent the success of the KRAs, in this paper, we propose a Secure and Efficient FILS (SEF) protocol as its optional substitute. The SEF is designed to eradicate potential threats from the KRAs without degrading the network performance.
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