[TLS] Re: Working Group Last Call for Use of ML-DSA in TLS 1.3

Stephen Farrell <stephen.farrell@cs.tcd.ie> Tue, 28 April 2026 21:24 UTC

Return-Path: <stephen.farrell@cs.tcd.ie>
X-Original-To: tls@mail2.ietf.org
Delivered-To: tls@mail2.ietf.org
Received: from localhost (localhost [127.0.0.1]) by mail2.ietf.org (Postfix) with ESMTP id F234EE51F2B5 for <tls@mail2.ietf.org>; Tue, 28 Apr 2026 14:24:45 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ietf.org; s=ietf1; t=1777411486; bh=t4xsQUQz8hn56rPRZGsisXXPM3rMqn5ldjE+VNqAJ0M=; h=Date:Subject:To:References:From:In-Reply-To; b=jiEPsN/WSdyyT5pRfkgVvNkl3N5/2hhKhXGMUyS44AT6F9Mbo8ekIjwHkICdGZcMc QCimvVGnhnNNqj3c7vi+SKE2q2Ehgod6CJMepVRYy/8TcZFdOMF/fAhTjEprA/u95J DxcUN5ltj4aR2q01BcAuOf/A+cXRI9xgvPjIU2DA=
X-Virus-Scanned: amavisd-new at ietf.org
X-Spam-Flag: NO
X-Spam-Score: -1.997
X-Spam-Level:
X-Spam-Status: No, score=-1.997 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: mail2.ietf.org (amavisd-new); dkim=pass (2048-bit key) header.d=cs.tcd.ie
Received: from mail2.ietf.org ([166.84.6.31]) by localhost (mail2.ietf.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id s7Sj2XEilEfL for <tls@mail2.ietf.org>; Tue, 28 Apr 2026 14:24:44 -0700 (PDT)
Received: from GVXPR05CU001.outbound.protection.outlook.com (mail-swedencentralazon11023079.outbound.protection.outlook.com [52.101.83.79]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by mail2.ietf.org (Postfix) with ESMTPS id ABCD9E51F2A8 for <tls@ietf.org>; Tue, 28 Apr 2026 14:24:44 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=oap0sm7LaoOEyd4Mj9uB8MYi0LLsMD//hfnEo1p41pFeq1ivhi5IMeFSVZzvgJl/1UqGfITCoS8Z/u69Iv6gbV646oaE0YBg+hlWsZu1xw5P48mzEzmHYXLKfHSHX3dBE26InXhXV4EOQOVJAV/xZ+mTH+SRh2v5XSDaEZGuPozGJOm8muaPmT05h7BiN2yW/TerFN31T5QI6qVWKJYSfFGQkWuwEdDuU0GNnQM8xDW+IseVRV+9LqHQ0l0qBMsggTn/TxHa5yzICUREcGNKyv60pwDBvErWyylLTgbL7WRaxwzUESAqIOpLeopGC9FLMWtP+nFLIADCN9k8K1IV9Q==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=t4xsQUQz8hn56rPRZGsisXXPM3rMqn5ldjE+VNqAJ0M=; b=eo5j+tOhzAh01Ug+fYss4+AAl4cZHsTqW/mgbllhyFyd4TwL/8Tj6+qWrHrWLk6JVlSqH5BJ4kd9xv4//L7Hh07O1eH3gjpIVPRbkU8fm5/0BzYpfKaYXao3KSBB1sB24vrlHaixf6odZ/tcSkWDcTAieeMiPImLpTN5u5ogKk40zoY7gkgvsgXYu0Pj1Haanmz/8EMb0hJdz83Cn9X0CjYLfS85fRnL/gS1/EhYoSlS5tERz9ETIBPPovbXC8haCi31uGFC4wDisWDbKZroQpRbZYG1Kt1cj8btSbnVdmyZd8+0nZraDf4YBB4275IvfHrYWCEmB1oywevKQHouAw==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=cs.tcd.ie; dmarc=pass action=none header.from=cs.tcd.ie; dkim=pass header.d=cs.tcd.ie; arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cs.tcd.ie; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=t4xsQUQz8hn56rPRZGsisXXPM3rMqn5ldjE+VNqAJ0M=; b=mFabxrPvbZgSkHT3vOAHJ9cH1cr/NhtVH8Fh3pwlO15LT7PW83BVmNAWkZvlEIkj4us0nwzOYIFcr5/Pdo1dGrgMbxUyHWUIrCyHuF5M4lG1sTVr/XWRw+47viyeaX+REk9EpqzSsZkdlXY+IbkrPVluNCYbnsVPP0NzsqwJdbJo1CSRTPBK704cYwfZu7LjLfML1YJtRSMmHw4FOLKvPkVLR8Lj03Dhha+zgnAZfXNF1M/GXtBIhGBnf149rn04T8qNXnHGSliJqfB2FvUqpjHtmJKjWnYh2w1EEHPsSrXg1RabEyTRFlqlgGRQ4d3PL5ufyRURf5tsgYfjciP66g==
Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=cs.tcd.ie;
Received: from PA3PR02MB11163.eurprd02.prod.outlook.com (2603:10a6:102:4b4::19) by AS8PR02MB9257.eurprd02.prod.outlook.com (2603:10a6:20b:5b1::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9846.26; Tue, 28 Apr 2026 21:24:34 +0000
Received: from PA3PR02MB11163.eurprd02.prod.outlook.com ([fe80::71cc:8d7f:5cb5:3772]) by PA3PR02MB11163.eurprd02.prod.outlook.com ([fe80::71cc:8d7f:5cb5:3772%5]) with mapi id 15.20.9846.025; Tue, 28 Apr 2026 21:24:34 +0000
Message-ID: <f1dce979-023f-4756-bd8a-58fe6201bf94@cs.tcd.ie>
Date: Tue, 28 Apr 2026 22:24:30 +0100
User-Agent: Mozilla Thunderbird
To: Sean Turner <sean@sn3rd.com>, TLS List <tls@ietf.org>
References: <16CF0FDA-7263-461A-9F2B-D37DBEAF5DD9@sn3rd.com> <038E2DBD-EE06-4091-8401-9818FB692459@sn3rd.com>
Content-Language: en-US
From: Stephen Farrell <stephen.farrell@cs.tcd.ie>
Autocrypt: addr=stephen.farrell@cs.tcd.ie; keydata= xjMEY9GzphYJKwYBBAHaRw8BAQdAo6JvjmSbxHdQWPZdvciQYsHhM1NxQBU398Mmimoy4p7N M1N0ZXBoZW4gRmFycmVsbCAoMjU1MTkpIDxzdGVwaGVuLmZhcnJlbGxAY3MudGNkLmllPsKQ BBMWCAA4FiEEMG54R8tZDyZFrDOn5Njp+ZeoM90FAmPRs6YCGwMFCwkIBwIGFQoJCAsCBBYC AwECHgECF4AACgkQ5Njp+ZeoM93bogEA25ElRyX0wwg+kGEN1AoL60MoZfvQZ/VtmXY6IC5j +csBAIBpkL5ySuzJK2zLNZn9qQGht8IaUcA7cvDcLvS2uHUEzjgEY9GzphIKKwYBBAGXVQEF AQEHQILCPWOwW36e8D3pY8GmvvtItIT+A5uV80ist+WokVsQAwEIB8J4BBgWCAAgFiEEMG54 R8tZDyZFrDOn5Njp+ZeoM90FAmPRs6YCGwwACgkQ5Njp+ZeoM92bcAEA8R+8cpqRUIS+SoAN iO05xE6O/wEx8/e88BqzAYki3SoBAOQdwiPX+MQrAxkWD8xxOsdMOAtxYKpkD1n8aPJUw6QJ
In-Reply-To: <038E2DBD-EE06-4091-8401-9818FB692459@sn3rd.com>
Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="------------440RU5cm34WKGbUvwGuoD50N"
X-ClientProxiedBy: DU7P194CA0011.EURP194.PROD.OUTLOOK.COM (2603:10a6:10:553::17) To PA3PR02MB11163.eurprd02.prod.outlook.com (2603:10a6:102:4b4::19)
MIME-Version: 1.0
X-MS-Exchange-MessageSentRepresentingType: 1
X-MS-PublicTrafficType: Email
X-MS-TrafficTypeDiagnostic: PA3PR02MB11163:EE_|AS8PR02MB9257:EE_
X-MS-Office365-Filtering-Correlation-Id: 1ea6e53e-22db-4740-990d-08dea56c8aec
X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True
X-TCD-Routed-via-EOP: Routed via EOP
X-TCD-ROUTED: Passed-Transport-Routing-Rules
X-MS-Exchange-SenderADCheck: 1
X-MS-Exchange-AntiSpam-Relay: 0
X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|786006|19092799006|1800799024|10070799003|4022899009|56012099003|18002099003|22082099003;
X-Microsoft-Antispam-Message-Info: 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
X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:PA3PR02MB11163.eurprd02.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(366016)(786006)(19092799006)(1800799024)(10070799003)(4022899009)(56012099003)(18002099003)(22082099003);DIR:OUT;SFP:1102;
X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 2
X-MS-Exchange-AntiSpam-MessageData-0: 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
X-MS-Exchange-AntiSpam-MessageData-1: b93tzi09vP5JrA==
X-OriginatorOrg: cs.tcd.ie
X-MS-Exchange-CrossTenant-Network-Message-Id: 1ea6e53e-22db-4740-990d-08dea56c8aec
X-MS-Exchange-CrossTenant-AuthSource: PA3PR02MB11163.eurprd02.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Apr 2026 21:24:34.0420 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: d595be8d-b306-45f4-8064-9e5b82fbe52b
X-MS-Exchange-CrossTenant-MailboxType: HOSTED
X-MS-Exchange-CrossTenant-UserPrincipalName: IeUwrbSznQThK0KffNbzcdbGQld+bFxESe0eP4zIjrr6iaDK5K8bWNXwV15/83Mq
X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR02MB9257
Message-ID-Hash: SE237H5ZYO5OH5RACNGVTHIPPGTKUH6Q
X-Message-ID-Hash: SE237H5ZYO5OH5RACNGVTHIPPGTKUH6Q
X-MailFrom: stephen.farrell@cs.tcd.ie
X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tls.ietf.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header
X-Mailman-Version: 3.3.9rc6
Precedence: list
Subject: [TLS] Re: Working Group Last Call for Use of ML-DSA in TLS 1.3
List-Id: "This is the mailing list for the Transport Layer Security working group of the IETF." <tls.ietf.org>
Archived-At: <https://mailarchive.ietf.org/arch/msg/tls/B3uI8Y1u4-jsVD7eyvMvVUXZhtg>
List-Archive: <https://mailarchive.ietf.org/arch/browse/tls>
List-Help: <mailto:tls-request@ietf.org?subject=help>
List-Owner: <mailto:tls-owner@ietf.org>
List-Post: <mailto:tls@ietf.org>
List-Subscribe: <mailto:tls-join@ietf.org>
List-Unsubscribe: <mailto:tls-leave@ietf.org>


On 28/04/2026 21:24, Sean Turner wrote:
> Hi! The chairs have judged that there is consensus to progress this
> I-D.

Well, that's a terse summary of a surprising conclusion. (And not
even 'rough'?)

I think it'd be good to understand the chairs' reasoning as to why
the various objections have been sufficiently deal with.

Cheers,
S.


> We will work with the authors to get a new version submitted
> and we will get to work on the Shepherd Write-Up.
> 
> The Chairs, Deirdre, Joe, and Sean
> 
>> On Apr 9, 2026, at 15:30, Sean Turner <sean@sn3rd.com> wrote:
>> 
>> This is the working group last call for Use of ML-DSA in TLS 1.3.
>> Please review draft-ietf-tls-mldsa [1] and reply to this thread
>> indicating if you think it is ready for publication or not. If you
>> do not think it is ready please indicate why. This call will end
>> on April 23, 2026.
>> 
>> REMINDER: If you have not done so recently, review the TLS WG's
>> Mail List Procedures; see [2].
>> 
>> The Chairs, Deirdre, Joe, and Sean
>> 
>> [1] https://datatracker.ietf.org/doc/draft-ietf-tls-mldsa/ [2]
>> https://mailarchive.ietf.org/arch/msg/tls/
>> ucdImHExlbOf4Q3BCG81gjzi2xE/
> 
> 
> 
> _______________________________________________ TLS mailing list --
> tls@ietf.org To unsubscribe send an email to tls-leave@ietf.org