.\" $OpenBSD: ieee80211_crypto.9,v 1.3 2005/09/30 20:34:25 jaredy Exp $ .\" .\" Copyright (c) 2004 Bruce M. Simpson <bms@spc.org> .\" Copyright (c) 2004 Darron Broad <darron@kewl.org> .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" $FreeBSD: src/share/man/man9/ieee80211_crypto.9,v 1.2 2004/07/07 12:59:39 ru Exp $ .\" $Id: ieee80211_crypto.9,v 1.3 2005/09/30 20:34:25 jaredy Exp $ .\" .Dd March 2, 2004 .Dt IEEE80211_CRYPTO 9 .Os .Sh NAME .Nm ieee80211_crypto_attach , ieee80211_crypto_detach , ieee80211_wep_crypt .Nd 802.11 WEP encryption functions .Sh SYNOPSIS .Ft void .Fn ieee80211_crypto_attach "struct ifnet *ifp" .Ft void .Fn ieee80211_crypto_detach "struct ifnet *ifp" .Ft struct mbuf * .Fn ieee80211_wep_crypt "struct ifnet *ifp" "struct mbuf *m0" "int txflag" .Sh DESCRIPTION These functions provide software encryption support for 802.11 device drivers. .Pp .\" The .Fn ieee80211_crypto_attach function initializes crypto support for the interface .Fa ifp , and sets the initialization vector (IV) for WEP encryption to a random number derived from a secure PRNG. .Pp .\" The .Fn ieee80211_crypto_detach function frees data structures associated with crypto support for the interface .Fa ifp . .Pp .\" The .Fn ieee80211_wep_crypt function runs the appropriate WEP encryption algorithm over the 802.11 encapsulated frame held in the mbuf chain .Fa m0 , for transmission or reception on the interface .Fa ifp . The .Fa txflag argument specifies whether the frame is being received or transmitted. A value of 0 indicates that the frame is being received and should therefore be decrypted; a non-zero value indicates that the frame is being transmitted and should be encrypted. .\" .Sh IMPLEMENTATION NOTES The .Fn ieee80211_wep_crypt function stores its IV in the interface's embedded .Vt struct ieee80211com instance. .Sh SEE ALSO .Xr ieee80211 9 .Sh HISTORY The .Nm ieee80211 series of functions first appeared in .Nx 1.5 , and were later ported to .Fx 4.6 and .Ox 3.6 . .Sh AUTHORS .An -nosplit This man page was written by .An Bruce M. Simpson Aq bms@FreeBSD.org and .An Darron Broad Aq darron@kewl.org .