1.\" 2.\" Copyright (c) 2004 Sam Leffler 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD$ 27.\" 28.Dd December 7, 2004 29.Dt WLAN_TKIP 4 30.Os 31.Sh NAME 32.Nm wlan_tkip 33.Nd TKIP and Michael crypto support for 802.11 devices 34.Sh SYNOPSIS 35.Cd "device wlan_tkip" 36.Sh DESCRIPTION 37The 38.Nm 39module handles the TKIP and Michael cryptographic requirements of the 40WPA and 802.11i protocols. 41It does encapsulation and decapsulation of TKIP-encoded 802.11 frames 42and optionally calculates the TKIP cipher and Michael MIC. 43The 44.Nm 45module is an 802.11 cryptographic plugin module for use by the 46.Xr wlan 4 47module. 48This module is automatically loaded if a TKIP key is configured; 49typically by a WPA supplicant program such as wpa_supplicant, 50or a WPA authenticator program such as 51.Nm hostapd . 52Should the underlying network device not be capable of doing the TKIP 53and/or Michael calculations in hardware, the 54.Nm 55module will do the work. 56.Sh SEE ALSO 57.Xr wlan 4 , 58.Xr wlan_ccmp 4 , 59.Xr wlan_wep 4 60.Sh STANDARDS 61More information can be found in the IEEE 802.11, WPA, and 802.11i Standards. 62.Sh HISTORY 63The 64.Nm 65driver first appeared in 66.Fx 6.0 . 67