Get the Whitepaper called A Practical Message Falsification Attack on WPA.
You can download it from the following link: https://packetstormsecurity.com/files/download/80654/A_Practical_Message_Falsification_Attack_On_WPA.pdf
Source: https://packetstormsecurity.com/files/80654/A-Practical-Message-Falsification-Attack-On-WPA.html