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Re: [TICTOC] WGLC for draft-ietf-ntp-mac

Jiangyuanlong <jiangyuanlong@huawei.com> Tue, 29 August 2017 06:06 UTC

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From: Jiangyuanlong <jiangyuanlong@huawei.com>
To: Karen O'Donoghue <odonoghue@isoc.org>, "ntp@ietf.org" <ntp@ietf.org>
CC: "tictoc@ietf.org" <tictoc@ietf.org>
Thread-Topic: WGLC for draft-ietf-ntp-mac
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Date: Tue, 29 Aug 2017 06:06:04 +0000
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Subject: Re: [TICTOC] WGLC for draft-ietf-ntp-mac
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Hi, I support the publication of this draft, though I have several suggestions for the texts:


1.       “If authentication is implemented, then AES-CMAC as specified in RFC
        4493 [RFC4493] should be computed…” in Section 3.
This is a requirement, so I think it should use “SHOULD” instead of “should”.
But if this AES-CMAC is the only authentication mechanism, it is better to use “MUST”.


2.       “We recommend that the MAC key for NTP SHOULD be 128 bits long AES-128 key…” in Section 3.
To be more formal, maybe it can be rephrased into “It is RECOMMENDED that the MAC key for NTP SHOULD be 128 bits long AES-128 key…”


3.       "FOr test vectors and their outputs refer to Section 4 of RFC 4493 [RFC4493]" in Section 5 should be “For test vectors and their outputs refer to Section 4 of RFC 4493.”


Thanks,
Yuanlong

From: TICTOC [mailto:tictoc-bounces@ietf.org] On Behalf Of Karen O'Donoghue
Sent: Wednesday, August 09, 2017 12:54 PM
To: ntp@ietf.org
Cc: tictoc@ietf.org
Subject: [TICTOC] WGLC for draft-ietf-ntp-mac

Folks,

This begins a three week working group last call (WGLC) for "Message Authentication Code for the Network Time Protocol"
https://datatracker.ietf.org/doc/draft-ietf-ntp-mac/

Please review and provide comments to the mailing list by no later than 31 August 2017. Earlier comments and discussion would be appreciated. Please note that the chairs will be using this WGLC to determine consensus to move this document forward to the IESG.

Also, as a reminder, we have migrated the working group mailing list to IETF infrastructure. Please respond to ntp@ietf.org<mailto:ntp@ietf.org>.

Regards,
Karen and Dieter

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