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Re: [TLS] [Iot-directorate] [Last-Call] Iotdir last call review of draft-ietf-tls-md5-sha1-deprecate-04

Hannes Tschofenig <Hannes.Tschofenig@arm.com> Fri, 30 July 2021 09:08 UTC

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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Russ Housley <housley@vigilsec.com>, Sean Turner <sean@sn3rd.com>, IETF TLS <tls@ietf.org>
CC: "iot-directorate@ietf.org" <iot-directorate@ietf.org>, "draft-ietf-tls-md5-sha1-deprecate.all@ietf.org" <draft-ietf-tls-md5-sha1-deprecate.all@ietf.org>, "last-call@ietf.org" <last-call@ietf.org>
Thread-Topic: [Iot-directorate] [TLS] [Last-Call] Iotdir last call review of draft-ietf-tls-md5-sha1-deprecate-04
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Date: Fri, 30 Jul 2021 09:08:02 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/tls/mfkdNkarRu35bx154aFx_Ko92ao>
Subject: Re: [TLS] [Iot-directorate] [Last-Call] Iotdir last call review of draft-ietf-tls-md5-sha1-deprecate-04
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I have no problem with the suggestion.

A few other observations:

1. FWIW: The reference to [Wang] is incomplete.

2. The references to the other papers use the websites of the authors or project websites. I would use more stable references.

3. Kathleen's affiliation is also outdated.

4. Is the update to RFC 7525 relevant given that there is an update of RFC 7525 in progress (see https://datatracker.ietf.org/doc/html/draft-ietf-uta-rfc7525bis-01) and even near completion?

5. The title of the draft gives the impression that this update only refers to TLS 1.2 but later in the draft DTLS is also included via the reference to RFC 7525. Should the title be changed to "Deprecating MD5 and SHA-1 signature hashes in TLS/DTLS 1.2"?

Ciao
Hannes

-----Original Message-----
From: Iot-directorate <iot-directorate-bounces@ietf.org> On Behalf Of Russ Housley
Sent: Wednesday, July 28, 2021 10:34 PM
To: Sean Turner <sean@sn3rd.com>; IETF TLS <tls@ietf.org>
Cc: iot-directorate@ietf.org; draft-ietf-tls-md5-sha1-deprecate.all@ietf.org; last-call@ietf.org
Subject: Re: [Iot-directorate] [TLS] [Last-Call] Iotdir last call review of draft-ietf-tls-md5-sha1-deprecate-04

>   In Section 7.1.4.1: the following text is removed:

     If the client supports only the default hash and signature algorithms
     (listed in this section), it MAY omit the signature_algorithms
     extension.

>   Since it’s a MAY, I am a-okay with deleting. Anybody else see harm?

I don't see any harm.

Russ

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