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New Attacks against AES-256

daemon@ATHENA.MIT.EDU (I)ruid)
Mon Aug 3 17:02:50 2009

From: "I)ruid" <druid@caughq.org>
To: cryptography@metzdowd.com
Date: Mon, 03 Aug 2009 13:38:50 -0500

Paper and details are not yet public, but Schneier provides a summary:

http://www.schneier.com/blog/archives/2009/07/another_new_aes.html

Basically, if AES-256 is implemented with fewer rounds than the standard
specifies (essentially the number of rounds recommended for AES-128), it
is susceptible to a number of related-key attacks.

-- 
I)ruid, C˛ISSP
druid@caughq.org
http://druid.caughq.org

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