[PATCH] WPA Supplicant hidden ssid support

[Sascha Sommer]

On Tuesday 30 November 2004 07:15, Jouni Malinen wrote:
> On Sun, Nov 28, 2004 at 12:22:17PM +0100, Sascha Sommer wrote:
> > just tryed out ndiswrapper + wpa supplicant with an linksys wrt54g and an
> > acx111 wlan card. Unfortunatelly wpa supplicant had problems with the
> > authentication due to the hidden ssid.
>
> In general, wpa_supplicant supports hidden SSIDs, but ndiswrapper
> interface does not yet..
>

I don't understand how this is possible, because I think it is always using 
the broadcasted ssid for authentication, but then I didn't check the whole 
code, therefore I might have overseen something.

> > I attached a trivial patch against 0.2.5 to fix this. I'm not sure if it
> > will work with all configuration, but I think you will get the idea.
>
> This is not suitable for cases where there are multiple APs configured
> with hidden SSIDs and/or multiple security policies in wpa_supplicant
> networks. driver_ndiswrapper will need to do something more complex to
> handle this case. It looks like NDIS driver will need to at least be
> configured with the correct SSID (i.e., make them try to associate with
> the AP using hidden SSID) before scan results include these APs.
> However, this might not be enough, since there are number of different
> security policies..

I already suspected something like this.

> One simple test case would be to add set_ssid call to scan request in
> driver_ndiswrapper.c and then go through all the possible security
> policies and verify whether the AP is found or not. If not, one would
> need to uset set_ssid and in addition, go through all security policies
> to match the scanning capability expected by wpa_supplicant.. Alas, this
> cannot be done cleanly in driver_ndiswrapper.c and would thus require
> changes that make the core implementation more complex.

No idea, I prefer the opensource acx100 driver, only tryed things out.
My patch will do it for me in my testcase.

Thanks for your answer.


Sascha