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<H1>[Mageia-dev] unable to mount encrypted partitions created with drakdisk</H1>
<B>David W. Hodgins</B>
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TITLE="[Mageia-dev] unable to mount encrypted partitions created with drakdisk">davidwhodgins at gmail.com
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<I>Thu Mar 29 04:22:42 CEST 2012</I>
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<PRE>On Wed, 28 Mar 2012 19:00:04 -0400, simple w8 <<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">simplew8 at gmail.com</A>> wrote:
><i> Something is not right, Free-OTFE says is does support xts but its not
</I>><i> being able to mount the partitions encrypted in Mageia, what can be
</I>><i> the cause?
</I>
We're using --cipher aes-xts-benbi --key-size 512.
As per <A HREF="http://www.ody.ca/~dwhodgins/Luks-Howto.html#Changelog">http://www.ody.ca/~dwhodgins/Luks-Howto.html#Changelog</A>
this was suggested to me several years ago, and is what I've been
using since then.
><i> You may see the FreeOTFE supported cypher modes here:
</I>><i> <A HREF="http://www.freeotfe.org/docs/Main/Linux_volumes.htm">http://www.freeotfe.org/docs/Main/Linux_volumes.htm</A>
</I>
I wasn't aware luks encrypted volumes could be opened by anything
else, or I would have considered that when suggesting the cipher
change.
I don't think using the benbi initial vector generation algorithm (64 bit)
instead of the plain (32 bit) algorithm makes much of a difference,
in terms of security. It was just the cbc mode that I was concerned
with.
Can you modify /usr/lib/libDrakX/fs/dmcrypt.pm to use aes-xts-plain
(line 68), create an encrypted volume, and test it with freeotfe?
If that works, open a bug report and request the change.
Regards, Dave Hodgins
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