Can't make losetup mount a crypto file to the loopback device (SuSE 8.2)

30 Apr 2003

      I'm trying to mount a file to the loopback device but the losetup command
complains about it.

I'm using the command line:
        losetup -e twofish /dev/loop0 /root/testfile

losetup asks for a password but returns:
    ioctl: LOOP_SET_STATUS: invalid argument
when one is entered 

"losetup -e none"  works

I have tried with the standard kernel in SuSE 8.2 but also kernel 2.4.20-13 with both
"loopback device support" and "Twofish encryption for loopback device" compiled
into the kernel.

Any suggestions.

Thanks in advance
Bo Jacobsen