[dm-devel] [PATCH v3 1/6] crypto: essiv - create wrapper template for ESSIV generation

[Ard Biesheuvel]

On Fri, 21 Jun 2019 at 03:07, Herbert Xu <herbert at gondor.apana.org.au> wrote:
>
> On Thu, Jun 20, 2019 at 03:53:45PM +0200, Ard Biesheuvel wrote:
> >
> > We'd need at least 512 and 4k for dm-crypt, but I don't think the
> > sector size is limited at all tbh
>
> In that case my preference would be to encode this into the key
> and hardware that encounters unsupported sector sizes can use a
> fallback.
>

OTOH, it also depends on what makes sense to implement in practice.

Gilad, I suppose sector size 512 is an obvious win, since the OS
always fetches at least 8 consective ones at a time. Do you see a
benefit for other sector sizes as well?