full-disclosure - Re: НА: WPA attack improved to 1min, MITM

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Date: Wed, 26 Aug 2009 12:42:25 -0500
From: Rohit Patnaik <quanticle@...il.com>
To: "M.B.Jr." <marcio.barbado@...il.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: 
 НА: WPA attack improved to 1min, MITM

Hello M. B.,

Symmetric ciphers are much less computationally intensive than 
asymmetric ciphers. So, in a situation where one has to encrypt and 
decrypt a lot of data quickly (as in the WPA setting) its better to use 
a symmetric cipher.

-- Rohit Patnaik

M.B.Jr. wrote:
> Dear dr,
> please, let me try to share and elucidate (with you and the list) one
> specific and conceptual point about "802.11i" and AES that intrigues
> me.
>
> I don't know if you can answer this, but it is worthy for reflection.
>
> So,
> Rijndael (AES) is a symmetric block cipher. Why WPA2 uses symmetric
> cryptography in a communication (which is an asymmetric situation)?
>
>
> Regards,
>
>
>
>
> On Wed, Aug 26, 2009 at 1:01 PM, Dragos Ruiu<dr@....net> wrote:
>   
>> On 26-Aug-09, at 7:35 AM, Rohit Patnaik wrote:
>>     
>>> Do you have a link to the entire paper by any chance? The abstract
>>> interests me, and I'd really like to read the whole thing.
>>>       
>> Should have put this in as someone else already correctly pointed out: http://bit.ly/8qwQt
>>
>> The research team is scheduled to present an implementation of the
>> attack at a conference on Sept. 25.
>>
>> cheers,
>> --dr
>>
>> --
>> World Security Pros. Cutting Edge Training, Tools, and Techniques
>> Tokyo, Japan November 4/5 2009  http://pacsec.jp
>> Vancouver, Canada March 22-26  http://cansecwest.com
>> Amsterdam, Netherlands June  http://eusecwest.com
>> pgpkey http://dragos.com/ kyxpgp
>>
>>
>>
>>
>> _______________________________________________
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>>     
>
>
>
>   

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