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ieee80211_crypto_attach, ieee80211_crypto_detach, ieee80211_wep_crypt -

 

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.
      The ieee80211_wep_crypt() function stores its IV in the interface’s
      embedded struct ieee80211com instance.
      awi(4), wi(4), arc4random(9), ieee80211(9), ifnet(9)
 

HISTORY

      The ieee80211 series of functions first appeared in NetBSD 1.5, and were
      later ported to FreeBSD 4.6.
 

AUTHORS

      This manual page was written by Bruce M. Simpson 〈bms@FreeBSD.org〉 and
      Darron Broad 〈darron@kewl.org〉.
 

Sections

Based on BSD UNIX
FreeBSD is an advanced operating system for x86 compatible (including Pentium and Athlon), amd64 compatible (including Opteron, Athlon64, and EM64T), UltraSPARC, IA-64, PC-98 and ARM architectures. It is derived from BSD, the version of UNIX developed at the University of California, Berkeley. It is developed and maintained by a large team of individuals. Additional platforms are in various stages of development.