TKIP

Temporal Key Integrity Protocol is an enhancement to WEP (Wired Equivalent Privacy) encryption. It uses a set of algorithms to rotate session keys. The protocol's enhanced encryption includes a per-packet key mixing function, a MIC (Message Integrity Check or Code ), an extended initialization vector (IV) with sequencing rules, and a re-keying mechanism. The encryption keys are changed (re-keyed) automatically and authenticated between devices after the re-key interval (either a specified period of time, or after a specified number of packets has been transmitted).