[dm-crypt] Some questions/clarifications around the LUKS spec

Milan Broz gmazyland at gmail.com
Mon Mar 14 20:54:23 CET 2016


On 03/14/2016 07:58 PM, Sven Eschenberg wrote:

...
> On a sidenote: When cryptsetup switched it's defaults to aes-xts it 
> stopped being compliant to the (original) LUKS specs. No doubt.
...
> Again cryptsetup gave up on the specs, as there was a severe need for 
> these changes. It really had been wise to ditch the original on disk 
> format at that time and create a new revised (sub)version of the on disk 
> format. It did not happen though and currently the reference 
> implementation is the 'de facto' specification, while the original spec 
> is only the 'de jure' specification. But then again, 'industry' and 
> 'practice' define standards, don't they? *SCNR*

Sorry? Spec is updated, it mentions XTS mode, and disk format remains still the same,
despite I did last update in 2011. (Simply because there was no need to update
it.) I'll mention more in another reply.

Cryptsetup never gave up specs, it is still compatible to the document.

Milan


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