entering randomly generated WPA keys

Sam Schinke sschinke at gmail.com
Thu Aug 18 19:45:24 EDT 2005


Cheers! This bug had me thinking my wireless card wasn't WPA
compatible or something strange like that, since the symptoms were
association failing at 2/4 for some particular part of the whole
process. There were only a few pages that mentioned that this might be
due to a mis-matched PSK, though. I'd love a more meaningful error
message, since a mis-matched PSK would always create a failure at the
same stage of association, no?

I finally clued in when I inspected the first part of a verbose log
(without -K) and saw that the parsed PSK was far shorter than
expected.

wpa_passphrase has some similar issues, but that is due to shell
expansion. Maybe a command-line option to wpa_passphrase could have it
read a PSK directly from STDIN or a file? IE: wpa_passphrase ssid -F -
< filename

Many of the passphrases generated here
(http://www.kurtm.net/wpa-pskgen/) have characters with "special"
meanings.

And lastly, not to be a bore, any plans for documentation beyond that
found in the wpa_supplicant.conf sample file? If it would help, I
could try my hand at writing some of them, even if only to end up with
a "man wpa_supplicant".

On 8/17/05, Jouni Malinen <jkmaline at cc.hut.fi> wrote:
> On Tue, Aug 16, 2005 at 11:00:06PM -0700, Sam Schinke wrote:
> 
> > PSK's with quotes before the hash mark seem to behave oddly.
> >
> > IE:
> >
> > psk="this is a psk:" "#but it hasn't ended yet"
> 
> Thanks! This was caused by comment stripping using the first " instead
> of the last one. This is now fixed in all CVS branches.
> 
> --
> Jouni Malinen                                            PGP id EFC895FA
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