2 .\" Copyright (c) 2004 Bruce M. Simpson <bms@spc.org>
3 .\" Copyright (c) 2004 Darron Broad <darron@kewl.org>
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28 .\" $Id: ieee80211_crypto.9,v 1.3 2004/03/04 10:42:56 bruce Exp $
31 .Dt IEEE80211_CRYPTO 9
34 .Nm ieee80211_crypto_attach , ieee80211_crypto_detach , ieee80211_wep_crypt
35 .Nd 802.11 WEP encryption functions
38 .Fn ieee80211_crypto_attach "struct ifnet *ifp"
40 .Fn ieee80211_crypto_detach "struct ifnet *ifp"
42 .Fn ieee80211_wep_crypt "struct ifnet *ifp" "struct mbuf *m0" "int txflag"
44 These functions provide software encryption support
45 for 802.11 device drivers.
49 .Fn ieee80211_crypto_attach
50 function initializes crypto support for the interface
52 and sets the initialization vector (IV) for WEP encryption to
53 a random number derived from a secure PRNG.
57 .Fn ieee80211_crypto_detach
58 function frees data structures associated with crypto support
64 .Fn ieee80211_wep_crypt
65 function runs the appropriate WEP encryption algorithm over the 802.11
66 encapsulated frame held in the mbuf chain
68 for transmission or reception on the interface
72 argument specifies whether the frame is being received or transmitted.
73 A value of 0 indicates that the frame is being received and should
74 therefore be decrypted; a non-zero value indicates that the frame
76 and should be encrypted.
78 .Sh IMPLEMENTATION NOTES
80 .Fn ieee80211_wep_crypt
81 function stores its IV in the interface's embedded
82 .Vt struct ieee80211com
93 series of functions first appeared in
95 and were later ported to
99 This manual page was written by
100 .An Bruce M. Simpson Aq bms@FreeBSD.org
102 .An Darron Broad Aq darron@kewl.org .