linux-kernel - Re: [PATCH] bcachefs: use library APIs for ChaCha20 and Poly1305

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Message-ID: <icwysnfc3v7b2hpwvm6ay6567sb5zcmcctmlt44cag6gblaylv@ubrzwcmphci2>
Date: Wed, 2 Apr 2025 10:01:07 -0400
From: Kent Overstreet <kent.overstreet@...ux.dev>
To: Eric Biggers <ebiggers@...nel.org>
Cc: linux-bcachefs@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-crypto@...r.kernel.org, "Jason A . Donenfeld" <Jason@...c4.com>
Subject: Re: [PATCH] bcachefs: use library APIs for ChaCha20 and Poly1305

On Tue, Apr 01, 2025 at 09:33:33PM -0700, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@...gle.com>
> 
> Just use the ChaCha20 and Poly1305 libraries instead of the clunky
> crypto API.  This is much simpler.  It is also slightly faster, since
> the libraries provide more direct access to the same
> architecture-optimized ChaCha20 and Poly1305 code.
> 
> I've tested that existing encrypted bcachefs filesystems can be continue
> to be accessed with this patch applied.
> 
> Signed-off-by: Eric Biggers <ebiggers@...gle.com>

Fantastic!

Applied, and this should go into 6.15 - this should get the strange bugs
in the poly1305 path that I wasn't able to reproduce off the dashboard
(and if they're still there, they'll be much easier to debug.)