There has been no activity on this bug for a year, but it is still a problem in Hardy 8.04. I've got a work-around (described below) but "loop-AES" needs to be rebuilt and copied into the kernel dir after *each* kernel update for my work-around. Could we please get the Sourceforge loop-aes sources pulled into the standard Ubuntu packages so we have AES support by default, out of the box?
Work-around: ---------------------------------------------------------------- On Ubuntu 8.04, by default, the AES encryption isn't enabled in the kernal for loopback mounting via "losetup". That has to be fixed before you can easily mount and unmount AES-encrypted file systems. Via apt-get or the Synaptic package manager, make sure you have the following installed: loop-aes-utils linux-headers-generic sudo apt-get install loop-aes-utils sudo apt-get install linux-headers-generic - get http://loop-aes.sourceforge.net/loop-AES-latest.tar.bz2, extract and open a root shell in the extracted directory - cd into the directory you downloaded into and... bunzip2 loop-AES-latest.tar.bz2 tar xf loop-AES-latest.tar cd loop-AES-v3.2e (or whatever the directory version is named) ******* NOTE!! ******* You will have to re-run the following steps (make, copy, and modprobe) after a kernal upgrade until and unless the various package maintainers fix the original problem. You'll know if you need to do this if, the next time you try to mount your secure file system after a kernal upgrade, you get the error: ioctl: LOOP_SET_STATUS: Invalid argument, requested cipher or key length (256 bits) not supported by kernel If so, just re-make against the new headers and re-copy the loop.ko file into place, and all should be well again. ******* NOTE!! ******* sudo rmmod loop sudo make clean sudo make (assuming the 'make" completed without errors) sudo mv /lib/modules/`uname -r`/kernel/drivers/block/loop.ko /lib/modules/`uname -r`/kernel/drivers/block/loop.ko-ORIG sudo cp tmp-d-kbuild/loop.ko /lib/modules/`uname -r`/kernel/drivers/block/loop.ko sudo modprobe loop sudo make tests (all tests should pass) After this, the following should work: losetup -e aes256 /dev/loop0 aes-file-to-mount -- ioctl: LOOP_SET_STATUS: Invalid argument, requested cipher or key length (256 bits) not supported by kernel https://bugs.launchpad.net/bugs/174738 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
