A New Method for Ensuring the Integrity in Wireless LAN (WiFi)

Wireless Local Area Network (LAN) as one of the major types of wireless networks, has become vulnerable to a wide set of security threats and attacks. This is due to the fact of using the air as the medium of transmission. Integrity attacks on Wireless Local Area Network (WLANs). These attacks aim to alter the messages while being transmitted, have not been eliminated by any of the wireless introduced protocols through the past years. This paper introduced a new method of ensuring integrity of the message. The new method working by entering the message as an input to an integrity algorithm known only by the Access Point (AP) and the authenticated clients in the network. Then the result of the algorithm moved to the unused-bits field in the TCP header and sent to the destination.