Atheros 5212 and WPA issues

Jouni Malinen jkmaline
Wed Sep 1 07:05:28 PDT 2004

On Wed, Sep 01, 2004 at 10:16:59AM +0200, Wouter de Jong wrote:

> I can successfully use it with WEP-encryption, but I just can't get 
> WPA to work. I've attached wpa_supplicant output. (Note that there are
> more WLAN's configured here... the correct one is 'WIDEXS') 
> (AP is currently in WPA-PSK mode with TKIP).

Do you know how the group cipher is configured? Is there any special
configuration for it or is it supposed to be TKIP for everything?

> Also, my AccessPoint is a Buffalo WLA-G54 (

What firmwate version are you using?

> Configuration file '/etc/wpa_supplicant.conf' -> '/etc/wpa_supplicant.conf'

Could you please send the configuration file you are using?

> WPA: Own WPA IE - hexdump(len=24): dd 16 00 50 f2 01 01 00 00 50 f2 02 01 00 00 50 f2 02 01 00 00 50 f2 02

> IEEE 802.1X RX: version=1 type=3 length=95
>   EAPOL-Key type=254
> WPA: RX message 1 of 4-Way Handshake from 00:07:40:a0:80:fe (ver=1)
> Invalid group cipher (1).
> WPA: Failed to generate WPA IE (for msg 2 of 4).

Hmm.. That group cipher 1 would be WPA_CIPHER_NONE which is not
allowed.. Odd that wpa_supplicant allowed the negotiation to go this
far. Own WPA IE above uses TKIP as the group cipher.. I will need to go
through the code to understand how this could happen.

Which version of wpa_supplicant are you using?

Jouni Malinen                                            PGP id EFC895FA

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