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AES256: Unable to mount Knoppix AES256 homedir in Gentoo
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bustersnyvel
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Joined: 14 Sep 2003
Posts: 36
Location: Amsterdam, The Netherlands

PostPosted: Sun Oct 26, 2003 2:25 pm    Post subject: AES256: Unable to mount Knoppix AES256 homedir in Gentoo Reply with quote

Hi there,

I've been using Knoppix extensively lately, using an USB stick as homedir. It has a single FAT32 partition with an image of my homedir 'knoppix.img' on it. The image is encrypted with the AES256 encryption. Booting with "knoppix home=scan" works like a charm, asks me for my passphrase and mounts the stick as expected.

Now I want to be able to access the data on the image on my main computer as well. I've got Gentoo (kernel gentoo-linux-2.4.20-r8) running on it, with the 'cryptoapi' and 'cryptoloop' modules loaded. When I give the appropriate (I think) mount command, I get this:

Code:

sybren $ sudo mount -t ext2 /mnt/thumb/knoppix.img knoppix/home -o encryption=aes,keybits=256
Password: (I type my passphrase here)
mount: wrong fs type, bad option, bad superblock on /dev/loop0,
       or too many mounted file systems


AES encryption is supported by my kernel, since if I change it to something else, I get:

Code:

sybren $ sudo mount -t ext2 /mnt/thumb/knoppix.img knoppix/home -o encryption=aes256,keybits=256
The cipher does not exist, or a cipher module needs to be loaded into the kernel
ioctl: LOOP_SET_STATUS: Invalid argument


Does anyone know how I can access my stick on Gentoo? Thanx in advance!
Sybren
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trumee
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Joined: 02 Mar 2003
Posts: 551
Location: London,UK

PostPosted: Tue Nov 18, 2003 10:53 am    Post subject: Reply with quote

Did anybody get a solution for this. I am facing the same problem :(
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bustersnyvel
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Joined: 14 Sep 2003
Posts: 36
Location: Amsterdam, The Netherlands

PostPosted: Tue Nov 18, 2003 1:54 pm    Post subject: Reply with quote

Not me, sorry. It seems like Knoppix contains specially-patched mount and losetup commands. Perhaps someone can add the patches to Gentoo as well? I might have the skills, and if nobody steps up I might even do it, but I don't have time for that the coming next months :(
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