Re: Encrypted loopback filesystem
* Michael S. Peek <firstname.lastname@example.org> [2007-05-25 10:43:26 -0400]:
> Hi gurus,
> I thought I would experiment with creating an encrypted loopback
> filesystem. I've generated a file of random numbers, but I can't attack
> it to /dev/loop0:
> # losetup -e serpent /dev/loop0 $(pwd)/file.bin
> ioctl: LOOP_SET_STATUS: Invalid argument
> I did a quick google search, but what I've found refers to making sure
> that you have the modules and util-linux installed, and I 've got those
> (using Debian/Etch), and the loop and serpent modules are loaded.
> What else can I check for?
loop-aes-modules-XXX (looks like you have them)
after install of loop-aes-modules, module loop must be removed and then
reloaded in the kernel to get to the new loop-aes module (only once if
you haven't rebooted since install:
command would be:
losetup -e serpent[128,192, or 256] /dev/loop[1,2,3,4,5,6,7, or 8]\
file.bin must have a physical size already, example:
dd if=/dev/urandom of=~/file.bin bs=1024 count=1000
will block out a working space for the file... change the count to vary
Good place to start. Good luck!
... In Brooklyn, we had such great pennant races, it made the World Series
just something that came later.
-- Walter O'Malley, Dodgers owner