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JyZude
n00b
Joined: 23 Apr 2002
Posts: 15
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 Posted: Wed Oct 08, 2003 4:38 am Post subject: cryptoloop and vanilla 2.4.22... any luck? |
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Vanilla kernel 2.4.22 changes a helluva lot when it comes to the cryptoapi stuff. And, it's all undocumented! 
After trawling through some mailing lists I finally figured out what's going on. 2.4.22 contains a backport of the 2.6 crypto interface, but it does not contain a cryptoloop driver. However, it seems someone has made a patch to put in the cryptoloop driver. See: http://mail.nl.linux.org/linux-crypto/2003-08/msg00107.html
Okay, so here's what I did. I emerged vanilla-sources-2.4.22 and then applied the patch as follows:
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cd /usr/src/linux
patch -p1 <patch-cryptoloop-jari-2.4.22.0
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It patched perfectly. Then...
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genkernel --config
(turn cryptoloop on in menuconfig)
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Built everything fine.
And finally...
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modprobe serpent
modprobe cryptoloop
mount -o loop,encryption=serpent,keybits=256 /mnt/cdisk /.../encrypted_ext3_volume
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And it tells me I must specify the filesystem type. So I tried using losetup, and again it seems to setup the loop device fine but doesn't ask for a password, and I can't mount the loop device.
Any idea what's going on? How do I tell it the password? Do I need util-linux-1.12 instead of 1.11z?
Mike. |
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piefke
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Joined: 05 Sep 2003
Posts: 57
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| Posted: Thu Oct 09, 2003 12:25 pm Post subject: |
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how do you use losetup?
lfor example: losetup -e twofish /dev/loop0 /dev/hdb5
while twofish is your cipher, and /dev/hdb5 the path to your device or a file, where you want to save your data.
after this you have to format /dev/loop0 with your datasystem (be sure the device above contaiins nothing important 
then you can mount /dev/loop0.
should work  |
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