Re: [Xen-users] use of encrypted filesystem

To:	"Michael Froh" <michael.froh@xxxxxxxxxx>
Subject:	Re: [Xen-users] use of encrypted filesystem
From:	"Anand Gupta" <xen.mails@xxxxxxxxx>
Date:	Thu, 28 Dec 2006 16:22:49 +0530
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Dear Micheal,

Thanks for the response.

On 12/28/06, Michael Froh <michael.froh@xxxxxxxxxx> wrote:

The use of loop-aes requires the kernel module loop.o and the aes key to be fed
using standard input and uuencoded. The loop-AES.README is at
http://loop-aes.sourceforge.net/loop-AES.README

An example from that document to fill an encrypted partition with random data is as follows:
head -c 15 /dev/urandom | uuencode -m - | head -n 2 | tail -n 1 \
| losetup -p 0 -e AES128 /dev/loop3 /dev/hda666
dd if=/dev/zero of=/dev/loop3 bs=4k conv=notrunc 2>/dev/null
losetup -d /dev/loop3

This example uses a random key with loop-aes, then a dd fill of zeros is converted
to random ciphertext. Note the uuencoding of /dev/urandom output and it being
piped into losetup.

I have checked the modules and i am able to load them using modprobe.

--
regards,

Anand Gupta

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