Implementation of the WLAN security standard (802.11i) requires the NIST standard AES cipher in CTR and CBC modes (a.k.a. CCM) for encryption and message authentication with the CCMP protocol and RC4/ ...

When TKIP encryption is used, a message integrity code is included to make sure that the data is not spoofed. It replaces WEP's weaker packet guarantee, which is called cyclic redundancy check.