Uses RC4 for Encryption. Old Algorithm
Working
Each packet send over the air is encrypted using an Key Stream
An Random IV is used to generate the key stream. The IV is 24 bits only
IV(24 bit) + Password = Key Stream (Used to Encrypt Data)
Along with each packet the IV is send in plain text to the router
Issues
IV is 24 bits only. The IV is sent in plain text
On an busy network the IV will repeat after sometime due to its small size