Re: [PATCH v3 3/5] crypto: Add RSA support

[Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>]

On Fri, Jun 20, 2025 at 10:53 AM Roger Pau Monné <roger.pau@xxxxxxxxxx> wrote:
>
> On Mon, Jun 02, 2025 at 02:36:35PM +0100, Ross Lagerwall wrote:
> > In preparation for adding support for livepatch signing, add support for
> > RSA crypto.
> >
> > The RSA code is extracted from Nettle at tag nettle_3.2_release_20160128
> > (https://git.lysator.liu.se/nettle/nettle).
> >
> > The MPI code is extracted from Linux at commit eef0df6a5953 (lib/mpi/*).
> >
> > Signed-off-by: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>
> > ---
> >
> > In v3:
> >
> > * Move mpi.c to lib
> > * Fix header guard name
> >
> >  xen/crypto/Makefile   |    1 +
> >  xen/crypto/rsa.c      |  196 +++++
> >  xen/include/xen/mpi.h |   68 ++
> >  xen/include/xen/rsa.h |   74 ++
> >  xen/lib/Makefile      |    1 +
> >  xen/lib/mpi.c         | 1729 +++++++++++++++++++++++++++++++++++++++++
>
> Just FTAOD: all the functions imported in mpi.c are used I think?  So
> that we don't introduce unreachable code.
>

Yes, everything included here is used by the end of the patch series.

Ross