failure after 4 way handshake

Jouni Malinen jkmaline at cc.hut.fi
Mon Oct 17 22:57:04 EDT 2005


On Mon, Oct 17, 2005 at 08:47:36PM +0200, matthieu castet wrote:

> the RX frame is 8 byte too long and the encrypted packet is 8 bytes too 
> short. And the LLC header is 8 bytes long.

That extra 8 bytes could be Michael MIC in the end of the frame that the
driver might need to remove (and maybe add for TX?).

> PS : knowing the WPA key is there a way to decrypt the transmit packet ?

Yes. For example, hostap_crypt_tkip.c has software implementation of
TKIP that could be used to do this.

-- 
Jouni Malinen                                            PGP id EFC895FA



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