From: Christoph Anton Mitterer <christoph.anton.mitterer@physik.uni-muenchen.de>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] Hybrid drives
Date: Sat, 17 Jul 2010 13:10:17 +0200 [thread overview]
Message-ID: <1279365017.3289.26.camel@fermat.scientia.net> (raw)
In-Reply-To: <20100717094646.GA8391@fancy-poultry.org>
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On Sat, 2010-07-17 at 11:46 +0200, Heinz Diehl wrote:
> As far as I understand, the SSD part of these hybrid drives is used as a
> cache, which doesn't loose its data when powered off. The disc itself is
> completely in encrypted state when off, but I'm quite curious what maybe
> could happen to the SSD part.
All is encrypted,.. expect those parts of the header which aren't
encrypted anyways.
The kernel encrypts everything at the (dm-crpyt) block layer,... "long"
before this goes out to hardware,... so the hardware never sees anything
that's unencrypted.
> is it completely covered by the additional crypto layer, or is there some
> internal transfer which happens "automatically" without being under
> control of the crypto layer?
As long as your CPU/bus is not hacked,... no ;)
Cheer,
Chris.
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next prev parent reply other threads:[~2010-07-17 11:10 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-17 7:13 [dm-crypt] Hybrid drives Heinz Diehl
2010-07-17 7:17 ` Heinz Diehl
2010-07-17 7:58 ` Luca Berra
2010-07-17 9:46 ` Heinz Diehl
2010-07-17 11:05 ` Mikko Rauhala
2010-07-17 11:45 ` Heinz Diehl
2010-07-17 13:27 ` Sven Eschenberg
2010-07-17 11:10 ` Christoph Anton Mitterer [this message]
2010-07-17 10:57 ` Christoph Anton Mitterer
2010-07-18 17:01 ` Arno Wagner
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