Wep 40bit key (Shared key?)

[Brad Brad]

Hi, thanks, but i tried this, and WEP still wouldn't work.  I booted back to 
windows which i knew worked, and it only worked when i checked "Shared Key". 
  I read in some possibly old mailing lists that Shared Key wasn't enabled 
in some drivers.  I couldn't find any information on the orinoco_cs driver, 
however i couldn't grep anything interesting from the source.  Anyone else 
know any more?


>From: Jim Carter <jimc at math.ucla.edu>
>To: Brad Brad <braddeicide at hotmail.com>
>CC: wireless at lists.samba.org
>Subject: Re: Wep 40bit key
>Date: Sat, 15 Feb 2003 16:49:01 -0800 (PST)
>
>On Sat, 15 Feb 2003, Brad Brad wrote:
> > Hi, i've got my rebadged orinoco gold working fine unWEPed, however 
>enabling
> > WEP kills things.  I read that i can only have 40bit, aparently its key
> > length is 5 chars though? my AP won't accept less than 10chars and calls
> > that 64bit.  from my understanding 64bit is 40bit + marketing?  any 
>ideas on
> > whats happening there?  128 is also 13 char verse 26 char btw.
>
>`iwconfig eth0 key s:abcde` is equivalent to `iwconfig eth0 key
>6162-6364-65` with or without the hyphens.  Microsoft Windows XP will take
>either 5 ASCII bytes or 10 hex digits without hyphens.  Your access point
>probably wants you to translate your ASCII string into hex.  Or generate a
>"truly" random hex string and use that both places.  `ipsec ranbits 40` is
>convenient if you have it installed.  Omit the underbars that come out
>every 8 bytes.
>
>You're right that 64 bits = 40 bits + marketing.  The firmware supplements
>the user-provided key with the card-dependent part of the MAC address, to
>guarantee that each card on the net uses a different WEP key (if the cards
>are from the same manufacturer).  Similarly with 104 + 24 = 128 bits, which
>doubles the time it takes AirSnort to crack the key.
>
>Here's my user support writeup about setting up wireless cards, with some
>notes at the end about setting up your own network.
>http://www.math.ucla.edu/computing/user_support/hardware/wiresetup.html
>
>James F. Carter          Voice 310 825 2897    FAX 310 206 6673
>UCLA-Mathnet;  6115 MSA; 405 Hilgard Ave.; Los Angeles, CA, USA 90095-1555
>Email: jimc at math.ucla.edu  http://www.math.ucla.edu/~jimc (q.v. for PGP 
>key)


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