[dm-crypt] The future of disk encryption with LUKS2

Arno Wagner arno at wagner.name
Fri Feb 5 14:31:23 CET 2016


On Fri, Feb 05, 2016 at 14:13:21 CET, Yves-Alexis Perez wrote:
> On ven., 2016-02-05 at 12:02 +0100, Arno Wagner wrote:
> > > Think external drives / removable storage?
> > 
> > An attacker with physical access that you do not notice has 
> > won. Storage encryption does not protect here. Think, for 
> > example, "evil maid" type attacks. Storage encryption
> > is only for theft of the device (which you notice) or 
> > attacker access which you notice in other ways.
> 
> This is exactly why integrity matters? The point is to have an usb drive /
> external disk *fully* encrypted.  The decryption is done by the host
> (which is trusted).  In that case, confidentiality and integrity are both
> important.

No. You are trying to solve the wrong problem. First, disk 
encryption with 1:1 mapping will never give you integrity 
protection and the other variants kill performance.

And second, who says anything abot the "evil maid" changing
things in the encrypted container?

Seriosuly, what you want you do not do with disk encryption, 
but with PGP/GnuPG on file-level.

Regards,
Arno 
-- 
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

If it's in the news, don't worry about it.  The very definition of 
"news" is "something that hardly ever happens." -- Bruce Schneier


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