IEEE80211_CRYPTO_ATTACH(9) FreeBSD Kernel Developer's Manual
NAME
ieee80211_crypto_attach, ieee80211_crypto_detach, ieee80211_wep_crypt -
802.11 WEP encryption functions
SYNOPSIS
void
ieee80211_crypto_attach(struct ifnet *ifp);
void
ieee80211_crypto_detach(struct ifnet *ifp);
struct mbuf *
ieee80211_wep_crypt(struct ifnet *ifp, struct mbuf *m0, int txflag);
DESCRIPTION
These functions provide software encryption support for 802.11 device
drivers.
The ieee80211_crypto_attach() function initializes crypto support for the
interface ifp, and sets the initialization vector (IV) for WEP encryption
to a random number derived from a secure PRNG.
The ieee80211_crypto_detach() function frees data structures associated
with crypto support for the interface ifp.
The ieee80211_wep_crypt() function runs the appropriate WEP encryption
algorithm over the 802.11 encapsulated frame held in the mbuf chain m0,
for transmission or reception on the interface ifp. The 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.
IMPLEMENTATION NOTES
The ieee80211_wep_crypt() function stores its IV in the interface's
embedded struct ieee80211com instance.
SEE ALSO
ieee80211(9)
HISTORY
The ieee80211 series of functions first appeared in NetBSD 1.5, and were
later ported to FreeBSD 4.6 and OpenBSD 3.6.
AUTHORS
This man page was written by Bruce M. Simpson <
[email protected]> and
Darron Broad <
[email protected]>.
FreeBSD 14.1-RELEASE-p8 November 23, 2015 FreeBSD 14.1-RELEASE-p8