wlan_tkip —
TKIP
and Michael crypto support for 802.11 devices
device wlan_tkip
The
wlan_tkip module handles the TKIP and Michael
cryptographic requirements of the WPA and 802.11i protocols. It does
encapsulation and decapsulation of TKIP-encoded 802.11 frames and optionally
calculates the TKIP cipher and Michael MIC. The
wlan_tkip module is an 802.11 cryptographic
plugin module for use by the
wlan(4) module. This
module is automatically loaded if a TKIP 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 TKIP and/or Michael calculations in hardware, the
wlan_tkip module will do the work.
wlan(4),
wlan_ccmp(4),
wlan_wep(4)
More information can be found in the IEEE 802.11, WPA, and 802.11i Standards.
The
wlan_tkip driver first appeared in
FreeBSD 6.0.