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Date: Tue, 14 May 2013 16:32:26 +0400
From: gremlin@...mlin.ru
To: owl-users@...ts.openwall.com
Subject: Re: Owl encrypted / and tcplay
On 04-May-2013 15:45:51 +0200, Zenny wrote:
> Is there a way to encrypt Owl / with aes-xts-plain64 which can be
> remotely authenticated remotely for decryption (like using dropbear
> in initrd or mandos server-client mechanism in debian using hooks)?
No. And normally you don't need that.
When dealing with sensitive data, personally I prefer leaving bare
system at unencrypted / and /var, while keeping all the sensitive
data inside VZ containers stored at encrypted /home; when I reboot
the server, I wait for it to start and then issue the command like:
gpg < vzhost.key | ssh root@...ost.somewhere \
"xxd -p -r | losetup -p 0 -e twofish -k 256 -H sha512 /dev/loop0 /dev/md2"
(hint: `head -c128 /dev/random | xxd -p -c32 | gpg -ea > vzhost.key`
will provide you with secure encryption key).
After that, I go to vzhost.somewhere and issue two obvious commands:
mount /dev/loop0
service vz start
Please see the http://openwall.info/wiki/Owl/secure-storage page for
instructions of how to set up secure data storage.
> Also interested in tcplay, but would be nice to know to securely
> integrated with Owl 3.0.
It uses devmapper, and thus is inacceptable due to its' ability to bury
all the data at once.
--
Alexey V. Vissarionov aka Gremlin from Kremlin <gremlin ПРИ gremlin ТЧК ru>
GPG key ID: 0xEF3B1FA8, keyserver: hkp://subkeys.pgp.net
GPG key fingerprint: 8832 FE9F A791 F796 8AC9 6E4E 909D AC45 EF3B 1FA8
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