Problem with DES

[Pierre PEIFFER <ppe@sxb.bsf.alcatel.fr>]

Hello everybody and happy new year !

    I have problem with DES, I use kernel patch 2.2.17.10 with kernel
2.2.13 and I have the following problem:
    losetup return "ioctl: LOOP_SET_STATUS: Invalid argument".

    Since rijndael encryption works very well and since a message "Use
of DES is deprecated", I was worrying if DES is still well supported and
maintained ?

    If yes (as I supposed), let me give you more info. I have everything
about loopback file and cryptography set as kernel modules(des,
loop_gen, cryptoapi, and loop). And when running losetup, all this
modules are well inserted, then I supposed my /etc/conf.module is right.

    I just have a look in /var/log/message and I have an error
"modprobe: Can't locate module loop-xfer-2", but I supposed this is not
a real error and has something to do with the cipher number of DES,
right ? (And then in /var/log/messages, I have a message such as
"Registered des (2)...")

    Then I have a look in the kernel code in order to trace the problem.
And I first see than in loop.c, in function loop_set_status, it is
"loop_init_xfer" which return -EINVAL

    In this function, we go in function in loop_gen_init2 (from
loop_gen.c) which call "des_set_key" which return -1. And this is the
problem, but I can't say why it returns -1.

    Has someone any idea ? Because I am a little bit "wedged", since I
haven't more idea...

    Many thank's  to everybody who can help me and to all other for
having read my mail !

    Pierre


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