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Forums » Up and Running » Security » Security » New method found to crack WPA - but not WPA2
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KodiacZiller

join:2008-09-04
73368

reply to F430
Re: New method found to crack WPA - but not WPA2

said by F430 :

quote:
I thought that all WPA devices supported AES
AES is optional in WPA and required in WPA2. So there are a number of compliant WPA devices which do not support AES.
You sure WPA2 "requires" AES? From the DD-WRT Wiki:

However, some devices allow WPA (not WPA2) with AES (and WPA2 with TKIP).
to forum · permalink · · 2008-11-06 15:35:50 · Reply to this


Kayrac
Premium
join:2001-09-29
Rochester, NH		 WPA2 is AES, or AES+TKIP
to forum · permalink · · 2008-11-06 15:51:10 · Reply to this

jbibe
Premium,MVM
join:2001-02-22

1 edit		reply to KodiacZiller
said by KodiacZiller See Profile :

You sure WPA2 "requires" AES? From the DD-WRT Wiki:

However, some devices allow WPA (not WPA2) with AES (and WPA2 with TKIP).
CCMP (i.e., AES) is required. See Section 8.3.1 of 802.11i.

Edit: You can find the requirements in 802.11i-2004.pdf or 802.11-2007.pdf.
to forum · permalink · · 2008-11-06 16:33:09 · Reply to this


caedmon

@cox.net

reply to KodiacZiller
quote:
You sure WPA2 "requires" AES?
Yes, as others above have already stated. Support for AES is required and support for TKIP is optional in WPA2. I am not aware of any vendor implementing TKIP in WPA2 but I haven't look for it either.
quote:
However, some devices allow WPA (not WPA2) with AES (and WPA2 with TKIP).
Exactly - they allow the optional encryption method in addition to the required method. In other words some devices support the optional AES-CCMP encryption method with WPA (I have one which does not and one which does).

Just so everyone knows, if a devices is using TKIP with WPA2 it is just as vulnerable as a device using TKIP with WPA.
to forum · permalink · 2008-11-12 19:59:47 · Reply to this
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