From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14AF7C7618E for ; Wed, 26 Apr 2023 22:55:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233392AbjDZWzy (ORCPT ); Wed, 26 Apr 2023 18:55:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60312 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233734AbjDZWzx (ORCPT ); Wed, 26 Apr 2023 18:55:53 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3ED731FCA; Wed, 26 Apr 2023 15:55:53 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id C60A462D4A; Wed, 26 Apr 2023 22:55:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C64D3C433EF; Wed, 26 Apr 2023 22:55:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1682549752; bh=mO31oiCqVL+zzEwTGzeQsA/0T08Xnt0P1wKcAF+Logc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=UTx9xBDo4rTTgBZ6kYLPc/H0W27KPvUPha+gU/V9BiMCyIZMS+/C71u1MU1H9O89M hLq1rTVA1fZYw63ZnNMOadUH/admvQdzc5vtd5JhEQXShF9hJVi+Xkr7a8BJfBbtQW 8BOScQvTLSkdz7gXDSB2y+vOryBE9JYykmj1jMxZHSrvZtADBwNyjcy84g1hjvWvD3 ps3r7IBomKD1ud3/vIa8ZeSD0Iqb+J8Je7kLq7irahYybUmi/nw5HZ2ZcK3gdrdB1Q TvihtT9/JJC7KHpaPHamSYp8sGNmfSdMYWjX3DD2OR/cdldWF98lcB4xFo/x+aqKrW jdODNyng+Mgvw== Date: Wed, 26 Apr 2023 15:55:50 -0700 From: Eric Biggers To: Heiko Stuebner Cc: palmer@dabbelt.com, paul.walmsley@sifive.com, aou@eecs.berkeley.edu, herbert@gondor.apana.org.au, davem@davemloft.net, conor.dooley@microchip.com, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, christoph.muellner@vrull.eu, Heiko Stuebner Subject: Re: [PATCH v4 0/4] Implement GCM ghash using Zbc and Zbkb extensions Message-ID: <20230426225550.GA65659@sol.localdomain> References: <20230329140642.2186644-1-heiko.stuebner@vrull.eu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230329140642.2186644-1-heiko.stuebner@vrull.eu> Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Hi Heiko, On Wed, Mar 29, 2023 at 04:06:38PM +0200, Heiko Stuebner wrote: > From: Heiko Stuebner > > This was originally part of my vector crypto series, but was part > of a separate openssl merge request implementing GCM ghash as using > non-vector extensions. > > As that pull-request > https://github.com/openssl/openssl/pull/20078 > got merged recently into openssl, we could also check if this could > go into the kernel as well and provide a base for further accelerated > cryptographic support. One more question. It seems that this patchset uses the RISC-V scalar crypto extensions. I've been hearing rumors that the RISC-V scalar crypto extensions have been superseded by the vector crypto extensions. Is that accurate? I wonder if it's worth putting effort into implementations that use the scalar crypto extensions when they might already be obsolete. - Eric