问题：

[多选] When implementing WLAN security， what are three benefits of using the Temporal Key Integrity Protocol （TKIP） instead of WEP？ （）

A .  TKIP uses an advanced encryption scheme based on AES
B .  TKIP provides authentication and integrity checking using Cipher Block Chaining Message Authentication Code （CBC-MAC）
C .  TKIP provides per-packet keyingand a rekeying mechanism
D .  TKIP provides message integrity check
E .  TKIP reduces WEP’s vulnerabilities byusing different hardware encryption chipset
F .  TKIP uses a 48 bit InitializationVector