[dm-crypt] Switch to XTS mode for LUKS in cryptsetup in 1.6.0 (Was Re: [ANNOUNCE] cryptsetup 1.6.0-rc1)

Milan Broz gmazyland at gmail.com
Fri Jan 4 21:56:27 CET 2013


On 01/04/2013 09:20 PM, Heinz Diehl wrote:
> On 04.01.2013, Arno Wagner wrote: 
> 
>> I think the current state is that in absolute terms AES256 is at 
>> least as secure than AES128, but maybe not more so. 
> 
> What's behind the "maybe", actually? Are there any serious attacks
> that can be carried out practically which reduces AES-256 to the
> strength of AES-128? Or are those weaknesses only of theoretical
> nature?

I think it is about related key attacks, I will better
not try to interpret the papers. There is a nice summary:

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

Milan


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