[pkg-cryptsetup-devel] cryptsetup failed with code 22 invalid argument

[Miranda Zhang]

> you might have more modules missing.  Assuming the cryptsetup binary
> comes from Debian the default cipher/mode/IV is aes-ats-plain64, are
> these modules available and loaded to?  You will probably need aes, xts
> and ecb (or aesni), maybe more, see /proc/crypto.

I have loaded xts and aes_generic
modprobe aes_generic
modprobe xts

[image: Screen Shot 2020-07-07 at 3.54.58 pm.png]

Is this a stock Debian kernel or do you build your own?
>
I think it is a stock one
$ uname -r
4.9.0-12-amd64

[image: Screen Shot 2020-07-07 at 4.05.57 pm.png]

> To see if the culprit is with cryptsetup or something else, you can even
> try to map a test device manually using the same ciphers/mode/IV:
>
>     dd if=/dev/zero bs=1M count=64 of=/tmp/disk.img
>     losetup -f /tmp/disk.img
>     dev=/dev/loop0 # loop device allocated above
>     dmsetup create testcrypt --table "0 $(blockdev --getsz $dev) crypt
> aes-xts-plain64 $(xxd -l64 -c256 -ps </dev/urandom) 0 $dev 0"
>
> Does that work?  (Is a new block device /dev/mapper/testcrypt being
> created?)


seems block device testcrypt gets created fine
[image: Screen Shot 2020-07-07 at 3.51.34 pm.png]


> If it does then the problem is with cryptsetup itself,
> otherwise it's something lower level.
>
> --
> Guilhem.
>
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