TKIP
From open-encyclopedia.com - the free encyclopedia.
In computing, TKIP is a security protocol defined in IEEE 802.11i specifications for WiFi networks to replace WEP. TKIP (pronounced "tee-kip") uses a key scheme (based on RC4) which encrypts every data packet sent with its own unique encryption key.
It also hashes the initialization vector (IV) values that are sent as plaintext in the current release of WEP. This means that IVs are now encrypted and are not as easy to sniff out of the air (addressing one of WEPs largest security weaknesses).
TKIP provides per-packet key mixing, a message integrity check and a re-keying mechanism, thus addressing other security issues with WEP. This increases the complexity of decoding the keys by reducing the amount of data available to the cracker, that has been encrypted using a particular key.
