[RFC PATCH 3/7] crypto: hctr2 - Add HCTR2 support

[Eric Biggers]

On Thu, Jan 27, 2022 at 10:29:31AM +0100, Ard Biesheuvel wrote:
> > diff --git a/crypto/hctr2.c b/crypto/hctr2.c
> > new file mode 100644
> > index 000000000000..af43f81b68f3
> > --- /dev/null
> > +++ b/crypto/hctr2.c
> > @@ -0,0 +1,475 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * HCTR2 length-preserving encryption mode
> > + *
> > + * Copyright 2021 Google LLC
> 
> Off by one?

To be pedantic, AFAIK if the first version of a file was written in 2021, then
it's correct to write 2021 even if it wasn't "published" yet.  But writing 2022
instead would also be fine if updates were made in 2022 (and I'd recommend just
doing that, to prevent people from thinking it's the wrong year :-) ).

- Eric