[dm-devel] xts fuzz testing and lack of ciphertext stealing support

[Ard Biesheuvel]

On Fri, 9 Aug 2019 at 05:48, Herbert Xu <herbert at gondor.apana.org.au> wrote:
>
> On Thu, Aug 08, 2019 at 06:01:49PM +0000, Horia Geanta wrote:
> >
> > -- >8 --
> >
> > Subject: [PATCH] crypto: testmgr - Add additional AES-XTS vectors for covering
> >  CTS (part II)
>
> Patchwork doesn't like it when you do this and it'll discard
> your patch.  To make it into patchwork you need to put the new
> Subject in the email headers.
>

IMO, pretending that your XTS implementation is compliant by only
providing test vectors with the last 8 bytes of IV cleared is not the
right fix for this issue. If you want to be compliant, you will need
to provide a s/w fallback for these cases.