DES encryption in loop device (kernel 2.2.1)

DES encryption in loop device (kernel 2.2.1)

[rdicaire]

In trying to DES encrypt a loop mounted ext2 file system, I get the
following errors:

losetup -e des /dev/loop4 MYFILE3
Password: xxxxxxxxxxxxxxx
Init (up to 16 hex digits): xxxxxxxxxxxxx
ioctl: LOOP_SET_STATUS: Invalid argument

Using XOR works but we all know XOR isn't secure. Is there a patch to fix this?

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Re: DES encryption in loop device (kernel 2.2.1)

[H. Peter Anvin]

Followup to:  <XFMail.990130193525.rdicaire@vic.com>
By author:    rdicaire@vic.com
In newsgroup: linux.dev.kernel
>
> In trying to DES encrypt a loop mounted ext2 file system, I get the
> following errors:
> 
> losetup -e des /dev/loop4 MYFILE3
> Password: xxxxxxxxxxxxxxx
> Init (up to 16 hex digits): xxxxxxxxxxxxx
> ioctl: LOOP_SET_STATUS: Invalid argument
> 
> Using XOR works but we all know XOR isn't secure. Is there a patch
> to fix this? 
> 

Have you included the international kernel patch from kerneli.org?
Otherwise, you're getting a crypto-less kernel.

	-hpa
-- 
"Linux is a very complete and sophisticated operating system.  There
are, and will be, large numbers of applications available for it."
    -- Paul Maritz, Group Vice President for Platforms And Applications,
       Microsoft Corporation [Reference at: http://www.kernel.org/~hpa/ms.html]

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