Re: Proper WEP Code

[Dan Williams <dcbw redhat com>]

On Tue, 2007-12-11 at 15:11 -0500, James M. Leddy wrote:
> Derek Atkins wrote:
> 
> <snip>
> >   In the former case you do need to make
> > sure that the AP is set up for a password, and you'd better hope that
> > the AP uses the same string-to-key as NM.
> </snip>
> Isn't that standardized?

WEP ASCII passphrases are standardized, WEP104 passphrases are de-facto
standard (some implemented hashing for 40-bit WEP keys, but that's not
really standardized at all), and Apple uses a completely different
hashing scheme for it's "password".

So no, WEP doesn't have a standardized passphrase->key hashing scheme.
That's why you get 3 choices.

WPA fixed this, where there is a standard for hashing a passphrase into
a key, _plus_ they made it easy to differentiate a passphrase and a hex
key, which is great because you can't do this with WEP, leading to
people using what _look_ like hex keys as actual WEP passphrases.

Dan

> >   But in the latter cases, you're
> > just defining a key directly.  The only difference is whether you're
> > supplying the key in hex or via the ascii character codes.  E.g., to
> > enter a hex 'digit' of 41 you could just enter an ascii "A".  This does
> > not require any special configuration on the AP, because you could use
> > 'AAAAA' and '4141414141' interchangably in NM.
> >
> >   
> >> Dan
> >>     
> >
> > -derek
> >
> >   
> 
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