Re: [AVTCORE] WG last call for draft-ietf-avtcore-srtp-ekt-01

Dan Wing <dwing@cisco.com> Tue, 26 November 2013 05:58 UTC

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From: Dan Wing <dwing@cisco.com>
In-Reply-To: <CEA93521.9BBF%mpeck@mitre.org>
Date: Mon, 25 Nov 2013 21:58:38 -0800
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To: "Peck, Michael A" <mpeck@mitre.org>
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Cc: Magnus Westerlund <magnus.westerlund@ericsson.com>, "draft-ietf-avtcore-srtp-ekt@tools.ietf.org" <draft-ietf-avtcore-srtp-ekt@tools.ietf.org>, IETF AVTCore WG <avt@ietf.org>
Subject: Re: [AVTCORE] WG last call for draft-ietf-avtcore-srtp-ekt-01
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Thanks for your comments, Michael.  I incorporated all those changes for -02.

-d

On Nov 13, 2013, at 11:09 AM, "Peck, Michael A" <mpeck@mitre.org> wrote:

> Hi - I have a few minor comments:
> 
> There are several references to AES_128 throughout the document (I counted
> 6) including a statement that "AES_128 is the default value for the EKT
> cipher."  It looks like these are leftovers from a previous draft and
> should be removed, as AES_128 is no longer a defined EKT cipher.  Section
> 3.4.1 states that AESKW_128 is now the default cipher.
> 
> Section 2.1:
> The ROC and ISN paragraphs both state "It is included in the EKT
> plaintext, but does not appear on the wire."
> The phrase "but does not appear on the wire" seems confusing to me - I'd
> suggest removing it?
> The EKT_Plaintext paragraph already states that the EKT plaintext doesn't
> appear on the wire.
> Besides, they sort-of do appear on the wire, but they're in ciphertext
> form?
> 
> Section 2.2:
> "for use in processing inbound SRTCP traffic"
> Should this be "for use in processing inbound SRTCP and SRTP traffic"?
> 
> Section 2.2.2
> typo: "containing and EKT" should be "containing an EKT"
> typo: "Steps 2, 3, 4 5" should be "Steps 2, 3, 4, 5"
> 
> Section 3.4.1:
> typo: "with in" should be "within"
> Same sentence: should "SRTCP packets" be "SRTCP and SRTP packets"?
> 
> Section 3.4.2:
> Should "SRTCP packets" be "SRTCP and SRTP packets"?
> 
> Section 3.5:
> typo: "Section (newline) Section 3.4" should just be "Section 3.4"
> 
> Mike Peck
> 
> On 10/25/13 5:55 AM, "Magnus Westerlund" <magnus.westerlund@ericsson.com>
> wrote:
> 
>> WG,
>> 
>> This starts a 3-week (due to the IETF meeting) WG last call of Encrypted
>> Key Transport for Secure RTP with intended status Proposed Standard.
>> Please provide any feedback by the 15th of November.
>> 
>> The draft
>> https://datatracker.ietf.org/doc/draft-ietf-avtcore-srtp-ekt/
>> 
>> Cheers
>> 
>> Magnus Westerlund
>> 
>> ----------------------------------------------------------------------
>> Multimedia Technologies, Ericsson Research EAB/TVM
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>> Ericsson AB                | Phone  +46 10 7148287
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