(sorry, hit the wrong button)
It was proposed in a brainstorming session[1] in 2008, but AFAIK it's never been implemented.I also found this[2] in which Milan said it's possible by creating LUKS over a LUKS device, but it's hell in terms of performance and you need to open every single device by itself (e.g. for aes-serpent-twofish you'd have to issue 3 separate luksOpen commands).
Since it creates performance issues, it might be best for you to create a regular LUKS device for - say your root filesystem and then, if you need it and your OS supports it, you can try
a) using /etc/crypttab to "luksOpen" a part of that already encrypted partition (I haven't tried, but it might be possible), or
b) use Truecrypt to unlock encrypted files you keep somewhere.
Cheers,
Claudio
Cheers,
Claudio
[2] http://comments.gmane.org/gmane.linux.kernel.device-mapper.dm-crypt/3020
On Tue, Jan 21, 2014 at 11:50 PM, Claudio Moretti <flyingstar16@xxxxxxxxx> wrote:
It was proposed in a brainstorming session[1]On Tue, Jan 21, 2014 at 8:59 PM, Falko <fb1729@xxxxxxxxx> wrote:
Hey there,
I was wondering how I set up cascading encryption like in Truecrypt (e.g.
aes-twofish or even twofish-serpent-aes...). I tried this: cryptsetup -v -c
serpent-twofish-xts-plain64 -s 512 -h sha512 --verify-passphrase -y --use-random
luksFormat /dev/sdx which, of course, didn't work :o). I couldn't find anything in
the man or internet either - only that it should be possible :o).
Thanks
Kind regards
fb
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