linux-kernel - Re: [PATCH 0/3] Implementation of Ascon-Hash256

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Message-ID: <20251215201932.GC10539@google.com>
Date: Mon, 15 Dec 2025 20:19:32 +0000
From: Eric Biggers <ebiggers@...nel.org>
To: "Rusydi H. Makarim" <rusydi.makarim@...ptograf.id>
Cc: Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	"Jason A. Donenfeld" <Jason@...c4.com>,
	Ard Biesheuvel <ardb@...nel.org>, linux-kernel@...r.kernel.org,
	linux-crypto@...r.kernel.org
Subject: Re: [PATCH 0/3] Implementation of Ascon-Hash256

On Mon, Dec 15, 2025 at 02:54:33PM +0700, Rusydi H. Makarim wrote:
> This patch implements Ascon-Hash256. Ascon-Hash256 is a hash function as a part
> 	of the Ascon-Based Lightweight Cryptography Standards for Constrained Devices,
> 	published as NIST SP 800-232 (https://csrc.nist.gov/pubs/sp/800/232/final).
> 
> Signed-off-by: Rusydi H. Makarim <rusydi.makarim@...ptograf.id>

What is the use case for supporting this algorithm in the kernel?  Which
specific kernel subsystem will be using this algorithm, and why?

There's a significant maintainence cost to each supported algorithm.  So
if there's no in-kernel user, there's no need to add this.

- Eric