The wlan_ccmp module handles the AES-CCMP cryptographic requirements of the WPA and 802.11i protocols.
It does encapsulation and decapsulation of CCMP-encoded 802.11 frames and optionally calculates the AES-
CCMP cipher. The wlan_ccmp module is an 802.11 cryptographic plugin module for use by the wlan(4)
module. This module is automatically loaded if an AES-CCMP key is configured; typically by a WPA
supplicant program such as wpa_supplicant, or a WPA authenticator program such as hostapd. Should the
underlying network device not be capable of doing the AES-CCMP calculations in hardware, the wlan_ccmp
module will do the work.