From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 754A126FA54; Fri, 1 Aug 2025 15:18:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754061481; cv=none; b=mjnLvgY4dng4mkr5o6eHWe32Jn5NmYH/ORgfRQ4YFai++sCCUZoVr9m5+t6OY/6m3+0b4W2K+Q9/Ha9GJs0k3186w5ZNuGZlVfVSz7gj5e0mxX9cFqvbyxZIH7T3sKfTirix/S6PNr8gbyNhsfn4VkoKlh1qJI+W+PTzixdmVqU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754061481; c=relaxed/simple; bh=foIr1t1FXk+cD/2GYbCBY/2aovvYRyH8Hi4VffLVJy0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=VzC60TCoyBXYuFFUAiA3WIFM/Qr+99SPU1Y96ejpfREv4titQMSFGqIM1Vv6/tDGNZINrVckM5W3CQerd3fklCswXQemC592y0PgFrOtmXbGQvN/9DljNpn8dXF9iiYonvCCgzvcgO4oJlMZDAQNuEw3+IClX+4xzckvRzBOeUI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZGbooI8Y; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZGbooI8Y" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 62BF4C4CEE7; Fri, 1 Aug 2025 15:17:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1754061480; bh=foIr1t1FXk+cD/2GYbCBY/2aovvYRyH8Hi4VffLVJy0=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=ZGbooI8YQVwPLc060y++wBkGU1MgDxOMaZA1jurjIozfZscChLCuSSo7Exq6cJnDD xa1EepAgTdE6YkUJXBeo2KKGkeYUnea6VmE7kZND9zj0YqQVDtrIztlBalQxHtXsDX dcTSCJJLCOCXHk2aQ3O15q4VI9bukXXFCq5ackkMYU+ekjhW7+UJJyxVRb1LHGnunl hlw5KpP/+GyIZa7fTKqhIn1kQ9q48jNk9hHusGKD+YZmONpSxPfbz1Q+xKM5Tc2xxz xLdBb9nJuAUO3wHVpVnQa00p1lT9dD+sBHzxf9Oz/oXu4vrQ7vPhNIgoHWKZGHaWa4 Ccs0SmimRR8oA== Message-ID: <59a973c8-4cf1-46b4-960e-a54c64ffdaed@kernel.org> Date: Fri, 1 Aug 2025 17:17:56 +0200 Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Beta Subject: Re: [PATCH net] mptcp: use HMAC-SHA256 library instead of open-coded HMAC Content-Language: en-GB, fr-BE To: Eric Biggers Cc: linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, Paolo Abeni , Mat Martineau , Geliang Tang , netdev@vger.kernel.org, mptcp@lists.linux.dev References: <20250731195054.84119-1-ebiggers@kernel.org> <245ef75d-44d5-4b66-9f28-68182f177fad@kernel.org> <20250731214156.GB1312@quark> From: Matthieu Baerts Autocrypt: addr=matttbe@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Eric, On 31/07/2025 23:41, Eric Biggers wrote: > On Thu, Jul 31, 2025 at 11:27:50PM +0200, Matthieu Baerts wrote: >> Hi Eric, >> >> On 31/07/2025 21:50, Eric Biggers wrote: >>> Now that there are easy-to-use HMAC-SHA256 library functions, use these >>> in net/mptcp/crypto.c instead of open-coding the HMAC algorithm. >>> >>> Remove the WARN_ON_ONCE() for messages longer than SHA256_DIGEST_SIZE. >>> The new implementation handles all message lengths correctly. >>> >>> The mptcp-crypto KUnit test still passes after this change. >> >> Thank you for this patch! It is a good idea, and it looks good to me! >> >> Reviewed-by: Matthieu Baerts (NGI0) >> >> One small detail: net-next is currently closed [1], and I don't think >> this patch can be applied in -net. So except if you plan to take it in >> the libcrypto tree for 6.17 -- but that's probably strange -- what I can >> do is to apply it in the MPTCP tree, and send it to net-next later on. >> Is this OK for you? >> >> [1] https://patchwork.hopto.org/net-next.html >> >> Cheers, >> Matt >> -- > > The MPTCP tree (and then net-next) for 6.18 is fine. I know this isn't > a great time to send patches, but I just happened to have some time now. No problem, having this patch now is fine for MPTCP. I just queued it for 6.18. Applied in our tree (feat. for net-next): New patches for t/upstream: - 1eadc6f75c43: mptcp: use HMAC-SHA256 library instead of open-coded HMAC - Results: 94c274f914c9..5c7ec796258e (export) Cheers, Matt -- Sponsored by the NGI0 Core fund.