linux-kernel - Re: [RFC PATCH v2 00/12] crypto: Adiantum support

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Date:   Fri, 19 Oct 2018 11:19:24 -0700
From:   Paul Crowley <paulcrowley@...gle.com>
To:     Jason@...c4.com
Cc:     ebiggers@...nel.org, linux-crypto@...r.kernel.org,
        linux-fscrypt@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Greg Kaiser <gkaiser@...gle.com>,
        Michael Halcrow <mhalcrow@...gle.com>,
        samuel.c.p.neves@...il.com, tomer.ashur@...t.kuleuven.be
Subject: Re: [RFC PATCH v2 00/12] crypto: Adiantum support

On Fri, 19 Oct 2018 at 08:58, Jason A. Donenfeld <Jason@...c4.com> wrote:
> Before merging this into the kernel, do you want to wait until you've
> received some public review from academia?

I would prefer not to wait. Unlike a new primitive whose strength can
only be known through attempts at cryptanalysis, Adiantum is a
construction based on
well-understood and trusted primitives; it is secure if the proof
accompanying it is correct. Given that (outside competitions or
standardization efforts) no-one ever issues public statements that
they think algorithms or proofs are good, what I'm expecting from
academia is silence :) The most we could hope for would be getting the
paper accepted at a conference, and we're pursuing that but there's a
good chance that won't happen simply because it's not very novel. It
basically takes existing ideas and applies them using a stream cipher
instead of a block cipher, and a faster hashing mode; it's also a
small update from HPolyC. I've had some private feedback that the
proof seems correct, and that's all I'm expecting to get.