full-disclosure - Re: WiFi is no longer a viable secure connection

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Date: Sat, 11 Oct 2008 04:35:35 +0200
From: line <line@...tched.com>
To: Cedric Blancher <blancher@...tel-securite.fr>
Cc: Full-Disclosure mailing list <full-disclosure@...ts.grok.org.uk>
Subject: Re: WiFi is no longer a viable secure connection

Cedric Blancher wrote:
> Le samedi 11 octobre 2008 à 11:03 +1100, Ivan . a écrit :
>   
>> Global Secure Systems has said that a Russian's firm's use of the
>> latest NVidia graphics cards to accelerate WiFi 'password recovery'
>> times by up to an astonishing 10,000 per cent proves that WiFi's WPA
>> and WPA2 encryption systems are no longer enough to protect wireless
>> data.
>>     
>
> No kinding ?! 100 times what a CPU can do[1] ?! Whaooo.
>
> But what are they referring to saying "up to 100 times faster than by
> using CPU only" ? We don't know. On, fast CPU, Aircrack cracking speed
> can go up to around 650/700 psk/s. By 100, it means 65k/70k psk/s. Let's
> round it to 100k psk/s.
>
> Now, do the maths. A PSK is a least 8 ASCII printable chars between
> codes 32 and 126. I let you figure how much time you will need to cover
> the minimum length (8 chars) key space.
>
> We covered the subject at BA-Con. We can reach 12k psk/s on a single
> GTX280 alone[2]. That's only a factor 5 to 6 behind, without any
> brilliant optimisation.
>
> I don't see any breakthrough here that could make WPA/WPA2 PSK
> inefficient. Really. Need something like a real crypto attack, or real
> computation power boost, like reaching 10M/s.
>
>
> [1] http://www.elcomsoft.com/news/268.html
> [2] http://sid.rstack.org/pres/0810_BACon_WPA2_en.pdf
>   
I especially liked the fact that the tool in question is fairly priced.

   1. Up to 20 clients      -      $599
   2. Up to 100 clients      -      $1,199
   3. Up to 500 clients      -      $2,399
   4. Up to 2500 clients      -      $4,999
   5. 2500+ clients      -      contact us




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