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To: Benjamin Lutz <benlutz@datacomm.ch>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Fri, 29 Jul 2005 03:09:13 +0200."
	<42E981B9.5060500@datacomm.ch> 
Date: Fri, 29 Jul 2005 08:31:17 +0200
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Cc: current@freebsd.org
Subject: Re: GELI - disk encryption GEOM class committed. 
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In message <42E981B9.5060500@datacomm.ch>, Benjamin Lutz writes:

>Encryption Strength:
>  GBDE - Uses AES128 for data encryption, with a different key per
>         sector. Master key is encrypted using AES256 and stored on
>         4 random locations on the disk. Access key is SHA2/512bit
>         hashed.

Just a clarification:

GBDE uses PRNG one-time-use per sector keys.

>Speed:
>  GBDE - Runs in software.

I actually have a version which uses crypto(9) hardware but the gain
is a lot less than one would expect so I havn't completed it yet.

>Booting from Encrypted Root:
>  GBDE - Doesn't say, probably doesn't work

Correct doesn't work without some special handling.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.