linux-kernel - Re: [RFC PATCH] zinc chacha20 generic implementation using crypto API code

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Date:   Tue, 20 Nov 2018 00:31:02 +0100
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     Eric Biggers <ebiggers@...nel.org>
Cc:     Herbert Xu <herbert@...dor.apana.org.au>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        linux-fscrypt@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        LKML <linux-kernel@...r.kernel.org>,
        Paul Crowley <paulcrowley@...gle.com>,
        Greg Kaiser <gkaiser@...gle.com>,
        Samuel Neves <samuel.c.p.neves@...il.com>,
        Tomer Ashur <tomer.ashur@...t.kuleuven.be>
Subject: Re: [RFC PATCH] zinc chacha20 generic implementation using crypto API code

Hi Eric,

On Tue, Nov 20, 2018 at 12:23 AM Eric Biggers <ebiggers@...nel.org> wrote:
> It's much better to have the documentation in a permanent location.

Agreed.

> I actually did add ChaCha12 support to most of the Zinc assembly in
> "[WIP] crypto: assembly support for ChaCha12"
> (https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git/commit/?h=adiantum-zinc&id=0a7787a515a977e11b680f1752b430ca1744e399).
> But I skipped AVX-512 and MIPS since I didn't have a way to test those yet,
> and I haven't ported the changes to your new perl scripts yet.

Oh, great. If you're playing with this in the context of the WireGuard
repo, you can run `ARCH=mips make test-qemu -j$(nproc)` (which is
what's running on https://www.wireguard.com/build-status/ ). For
AVX-512 testing, I've got a box I'm happy to give you access to, if
you want to send an SSH key and your employer allows for that kind of
thing etc. I can have a stab at all of this too if you like.

Jason