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Re: [Sipbrandy] AD Evaluation of draft-ietf-sipbrandy-osrtp-07

Gonzalo Camarillo <gonzalo.camarillo@ericsson.com> Fri, 22 March 2019 08:04 UTC

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From: Gonzalo Camarillo <gonzalo.camarillo@ericsson.com>
To: Ben Campbell <ben@nostrum.com>, "draft-ietf-sipbrandy-osrtp.all@ietf.org" <draft-ietf-sipbrandy-osrtp.all@ietf.org>
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Thread-Topic: [Sipbrandy] AD Evaluation of draft-ietf-sipbrandy-osrtp-07
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Date: Fri, 22 Mar 2019 08:03:58 +0000
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Subject: Re: [Sipbrandy] AD Evaluation of draft-ietf-sipbrandy-osrtp-07
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Andy, authors,

what is the status of this?

Cheers,

Gonzalo

On 21-Feb-19 23:06, Ben Campbell wrote:
> Hi,
> 
> To be clear, progress of this draft is currently blocked on a response to my “Please resolve…” comment below. Please respond as soon as possible,
> 
> Thanks!
> 
> Ben.
> 
>> On Feb 14, 2019, at 2:46 PM, Ben Campbell <ben@nostrum.com> wrote:
>>
>> Signed PGP part
>> Hi,
>>
>> This is my AD Evaluation of draft-ietf-sipbrandy-osrtp-07.
>>
>> Thank you for a readable and easy to understand document.There is one comment I would like to resolve prior to IETF LC. The others can be resolved along with any last call feedback.
>>
>> *** Please resolve prior to IETF LC ***
>>
>> §4: The relaxation of authentication requirements for DTLS-SRTP and SDES could use some elaboration on why this acceptable. I _think_ the answer is that, since OSRTP doesn’t guaranty authentication, there’s no need for such a guaranty from the signaling channel. Is that correct?
>>
>> OTOH, §1 says "third mode for security between "cleartext” and "comprehensive protection" that allows encryption and authentication to be used if supported…”. That suggests that that authentication is sometimes provided. Is there a distinction between the authenticated case and unauthenticated case that should be mentioned somewhere? (For example, is there a need to indicate the distinction to the user?)
>>
>> *** Other Substantive Comments ***
>>
>> §2: Please use the new boilerplate from RFC 8174.
>>
>> §3.1: Please clarify that that the offer can contain more than one key management attribute. This is mentioned in §3.1, but not actually in the section on generating the offer.
>>
>> *** Editorial Comments ***
>>
>> §3: "As discussed in [RFC7435], this is
>> the "comprehensive protection" for media mode.”
>> s/this/that
>>
>> §3.4: "meaning that the decision to
>> create an OSRTP type offer or something else should not be influenced”
>> That’s referring to the decision to create a _new_ offer, right? Not the original offer?
>>
>>
>>
>

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