About this question
The use of Counter Mode with Cipher Block Chaining Message Authentication Code Protocol (CCMP) for WPA/WPA2 PSK is being attacked. This is a trivial attack (offline brute force) against the initial key exchange. It should be noted that the IEEE does not recognize this attack. The concern is that there is a tool called Pyrit which claims to make 7.9 million password guesses per second or about 682.5 Billion per day. This is made possible by using the new Intel i7 chips which have the AES-NI instruction set. One of these chips costs less than $300.
What changes to WPA2-PSK are needed in order to mitigate this attack?
