Проект OpenNet: MAN ieee80211_crypto (9) Ядро (FreeBSD и Linux)

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ieee80211_crypto (9)

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

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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.