[dm-crypt] question

Matthias Schniedermeyer ms at citd.de
Thu Dec 11 23:54:28 CET 2014


On 11.12.2014 22:07, Sayler, Craig A. (AFRC-MI)[InuTeq, LLC] wrote:
> Ok Thank you of the response! No I have a system that someone removed the
> key and there is no key left, is there a way to get in and get the data?

If it is still open you can copy it (or backup it).

If not and you don't have a header-backup i'm afraid that container is 
unrecoverable.

> On 12/11/14 2:04 PM, "Matthias Schniedermeyer" <ms at citd.de> wrote:
> 
> >On 11.12.2014 18:30, Sayler, Craig A. (AFRC-MI)[InuTeq, LLC] wrote:
> >> Is there a way to decrypt a drive permanently with out reinstalling?
> >
> >Yes.
> >
> >But the much safer way is:
> >Backup, make a new filesystem on the previous backing-device & Restore
> >from backup.
> >
> >
> >The unsafe(!) 'inplace' method (that as an advantage doesn't need
> >additional storage):
> >Just open the container normally, 'dd' the mapped container over the
> >backing device and pray that process isn't interruped. Because it will
> >be a huge PITA if it gets interruped.
> >
> >
> >But don't risk it, Backup & Restore is the way this should be done.
> >
> >
> >
> >
> >-- 
> >
> >Matthias
> 
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-- 

Matthias


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