[dm-crypt] dm-crypt vs Luks: What’s the difference on disk

Michael michael at skrilnetz.net
Tue Aug 12 21:03:17 CEST 2014


So a Luks partition with a detached header would look the same as a  
plain dm-crypt partition, right?
Quoting Arno Wagner <arno at wagner.name>:

> Simple: plain dm-crypt is header-less.
> More info in the FAQ, Section 6, in particular Items
> 6.11 and 6.12.
>
> Arno
>
>
> On Tue, Aug 12, 2014 at 15:11:18 CEST, Michael wrote:
>>
>> Hi,
>>
>> I was wondering why a plain dm-crypt partition looks like random
>> data while with a Luks partition an attacker will know that the
>> partition is encrypted. What is exactly the difference on disk? Is
>> it the header that would tell someone thats an encrypted partition?
>> Would a Luks partition with a detached header change this situation?
>>
>> Thanks.
>> --
>> Regards,
>> Michael
>
>> pub  2048R/CF8EDAA3 2014-06-04 Michael G <michael at skrilnetz.net>
>> sub  2048R/28ADE1E3 2014-06-04
>
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>
>
> --
> Arno Wagner,     Dr. sc. techn., Dipl. Inform.,    Email: arno at wagner.name
> GnuPG: ID: CB5D9718  FP: 12D6 C03B 1B30 33BB 13CF  B774 E35C 5FA1 CB5D 9718
> ----
> A good decision is based on knowledge and not on numbers. -  Plato
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-- 
Regards,
Michael
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