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ieee80211_crypto (9)
  • >> ieee80211_crypto (9) ( FreeBSD man: Ядро )

  • BSD mandoc
     

    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 Fa 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 Fa ifp .

    The 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.  

    IMPLEMENTATION NOTES

    The ieee80211_wep_crypt ();
    function stores its IV in the interface's embedded Vt struct ieee80211com instance.  

    SEE ALSO

    awi(4), wi(4), arc4random(9), ieee80211(9), ifnet(9)  

    HISTORY

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

    AUTHORS

    An -nosplit This manual page was written by An Bruce M. Simpson Aq bms@FreeBSD.org and An Darron Broad Aq darron@kewl.org .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    IMPLEMENTATION NOTES
    SEE ALSO
    HISTORY
    AUTHORS


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