Bug#482092: partman-crypto: xts support

[Matt Taggart <taggart@debian.org>]

Hi #482092,

I am pinging this bug because I would really like to see xts in wheezy.
We (riseup.net) have been using serpent:xts-plain for our systems for
both lenny and squeeze and it works great. Until now we have had to do
some hacking to get d-i to set it up,
* drop to a shell
* wget the xts.ko and gf128mul.ko modules in the right dir
* verify the md5sums of the modules
* depmod -a;modprobe xts
* echo "cbc-essiv:sha256 cbc-plain plain ecb xts-plain" >
   /lib/partman/ciphers/dm-crypt/ivalgorithm

We even hacked up a preseed early command hack to set this up because
it was such a hassle.

I think the xts kernel module (and hopefully the gf128mul module since
it's a dependency?) are already included if I read this right,

http://anonscm.debian.org/viewvc/kernel/dists/sid/linux/debian/installer/modules/crypto-modules?revision=19065&view=markup

If so, then I think all that's needed is to add xts-plain to

debian-installer/packages/partman-crypto/ciphers/dm-crypt/ivalgorithm

Sound correct?

Thanks,

-- 
Matt Taggart
taggart@debian.org