wpa supplicant problems continue - wrt54gs says pre-shared key incorrect

John H. mistamaila at gmail.com
Fri Apr 28 00:35:05 EDT 2006


well, i switched to .5.2 and i connected to this wrt54gs!

regarding wpa_passphrase, i thought i had to use that to translate an
ascii string to hex to stick in the conf file???

On 4/27/06, Jouni Malinen <jkmaline at cc.hut.fi> wrote:
> On Thu, Apr 27, 2006 at 11:00:26PM -0500, John H. wrote:
> > I don't get it, i can get on wpa linksys network at one location, but
> > not my dell truemobile 2300, and now on a friend's linksys, both
> > saying
> >  "WPA: 4-Way HAndshake failed - pre-shared key may be incorrect"
> >
> > i mean, is it possible wpa_passphrase is translating it wrong, or
> > something?  on this new network, i can get on fine with windows typing
> > the ascii password.
> > it's a WPA personal TKIP wrt54gs setup
>
> I would be surprised if wpa_passphrase derived the key incorrectly.
> Anyway, I would not bother using wpa_passphrase unless you are using
> very slow CPU. wpa_supplicant can take care of that key derivation
> automatically and there is no problems with changing SSID or passphrase
> and forgetting to update the PSK manually. The "pre-shared key may be
> incorrect" part is just a guess. This particular case is likely caused
> by something else.
>
> Did you have any way of running a wireless sniffer to capture packets
> send between the AP and the client in both a failed and successful case?
> That could provide useful information in figuring out what is going on.
>
> Another interesting test would be to verify whether wpa_supplicant can
> set up the connection on Windows with the driver that worked using
> another supplicant (I would guess that was with the Microsoft supplicant
> that is included in WinXP). I would like to get better understanding on
> whether this interoperability issue is specific to the driver or
> supplicant and testing wpa_supplicant with a driver that was able to use
> the AP would provide additional information for this.
>
> Please also include debug log (with -dd on command line) whenever
> reporting a failed test case with a new wlan card/driver/OS. Without it,
> I don't have much information about the case.
>
> --
> Jouni Malinen                                            PGP id EFC895FA
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