linux-kernel - Re: [PATCH v4] fscrypt: add Adiantum support

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Message-ID: <20181209215640.GC1840@mit.edu>
Date:   Sun, 9 Dec 2018 16:56:40 -0500
From:   "Theodore Y. Ts'o" <tytso@....edu>
To:     Eric Biggers <ebiggers@...nel.org>
Cc:     linux-fscrypt@...r.kernel.org, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jaegeuk Kim <jaegeuk@...nel.org>,
        Richard Weinberger <richard@....at>,
        Paul Crowley <paulcrowley@...gle.com>,
        Greg Kaiser <gkaiser@...gle.com>
Subject: Re: [PATCH v4] fscrypt: add Adiantum support

On Mon, Nov 26, 2018 at 11:27:37AM -0800, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@...gle.com>
> 
> Add support for the Adiantum encryption mode to fscrypt.  Adiantum is a
> tweakable, length-preserving encryption mode with security provably
> reducible to that of XChaCha12 and AES-256, subject to a security bound.
> It's also a true wide-block mode, unlike XTS.  See the paper
> "Adiantum: length-preserving encryption for entry-level processors"
> (https://eprint.iacr.org/2018/720.pdf) for more details.  Also see
> commit 059c2a4d8e16 ("crypto: adiantum - add Adiantum support").

Thanks, applied.

					- Ted