loop device encryption with Fedora 11 and losetup -e
Bill Davidsen
davidsen at tmr.com
Wed Sep 30 04:37:06 UTC 2009
Patrick Mansfield wrote:
> Hi all -
>
> What valid encryptions can be used under Fedora 11 with losetup?
>
> Do I need to manually load the corresponding kernel module? Loading
> aes_i586 and/or aes_generic made no difference.
>
modprobe cryptoloop
> Are there now better alternatives than using "losetup -e"?
>
> I keep getting EINVAL while trying to use "losetup -e".
>
> I'm running with the latest updates, kernel is 2.6.30.5-43.fc11.i686.PAE
>
> The only thing I can use is "-e 1" or "-E 1", losetup tells me that is
> just an XOR encryption.
>
> These fail:
>
> # losetup -e 2 /dev/loop0 ./test.image
> Password:
> ioctl: LOOP_SET_STATUS: Invalid argument
> # losetup -e aes /dev/loop0 ./test.image
> Password:
> ioctl: LOOP_SET_STATUS: Invalid argument
>
> These both work (losetup -e and -E seem to be treated the same):
>
> # losetup -e 1 /dev/loop0 ./test.image
> Password:
> # losetup /dev/loop0
> /dev/loop0: [fd02]:3918266 (/home/test/data_images/test.image), encryption XOR (type 1)
> # losetup -d /dev/loop0
> # losetup -E 1 /dev/loop0 ./test.image
> Password:
> # losetup /dev/loop0
> /dev/loop0: [fd02]:3918266 (/home/test/data_images/test.image), encryption XOR (type 1)
>
> -- Patrick Mansfield
>
--
Bill Davidsen <davidsen at tmr.com>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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