[AVTCORE] Publication Request of draft-ietf-avtcore-srtp-vbr-audio-03

[Magnus Westerlund <[e-mail]>]

Wg,

I have requested publication as BCP.

Write up:

Proto write up by Magnus Westerlund for
Guidelines for the use of Variable Bit Rate Audio with Secure RTP
draft-ietf-avtcore-srtp-vbr-audio-03
with the intended publication as BCP

  (1.a) Who is the Document Shepherd for this document? Has the
        Document Shepherd personally reviewed this version of the
        document and, in particular, does he or she believe this
        version is ready for forwarding to the IESG for publication?

Magnus Westerlund is Shepherd and has read this version (03) of the
document and believe it is ready for publication as BCP.


  (1.b) Has the document had adequate review both from key WG members
        and from key non-WG members? Does the Document Shepherd have
        any concerns about the depth or breadth of the reviews that
        have been performed?

Yes, the review has been adequate. Both the transport and security
people active in the WG has reviewed it.


  (1.c) Does the Document Shepherd have concerns that the document
        needs more review from a particular or broader perspective,
        e.g., security, operational complexity, someone familiar with
        AAA, internationalization or XML?

No.


  (1.d) Does the Document Shepherd have any specific concerns or
        issues with this document that the Responsible Area Director
        and/or the IESG should be aware of? For example, perhaps he
        or she is uncomfortable with certain parts of the document, or
        has concerns whether there really is a need for it. In any
        event, if the WG has discussed those issues and has indicated
        that it still wishes to advance the document, detail those
        concerns here. Has an IPR disclosure related to this document
        been filed? If so, please include a reference to the
        disclosure and summarize the WG discussion and conclusion on
        this issue.

No.

  (1.e) How solid is the WG consensus behind this document? Does it
        represent the strong concurrence of a few individuals, with
        others being silent, or does the WG as a whole understand and
        agree with it?

It is a strong consensus from relatively few inviduals. But that give
the Shepherd no significant concern.

  (1.f) Has anyone threatened an appeal or otherwise indicated extreme
        discontent? If so, please summarise the areas of conflict in
        separate email messages to the Responsible Area Director. (It
        should be in a separate email because this questionnaire is
        entered into the ID Tracker.)

No.

  (1.g) Has the Document Shepherd personally verified that the
        document satisfies all ID nits? (See the Internet-Drafts Checklist
        and http://tools.ietf.org/tools/idnits/). Boilerplate checks are
        not enough; this check needs to be thorough. Has the document
        met all formal review criteria it needs to, such as the MIB
        Doctor, media type and URI type reviews?

Yes the document has been ID-nits checked and the Checklist walked
through.

  (1.h) Has the document split its references into normative and
        informative? Are there normative references to documents that
        are not ready for advancement or are otherwise in an unclear
        state? If such normative references exist, what is the
        strategy for their completion? Are there normative references
        that are downward references, as described in [RFC3967]? If
        so, list these downward references to support the Area
        Director in the Last Call procedure for them [RFC3967].

Yes, split and no down-refs.

  (1.i) Has the Document Shepherd verified that the document IANA
        consideration section exists and is consistent with the body
        of the document? If the document specifies protocol
        extensions, are reservations requested in appropriate IANA
        registries? Are the IANA registries clearly identified? If
        the document creates a new registry, does it define the
        proposed initial contents of the registry and an allocation
        procedure for future registrations? Does it suggest a
        reasonable name for the new registry? See [RFC5226]. If the
        document describes an Expert Review process has Shepherd
        conferred with the Responsible Area Director so that the IESG
        can appoint the needed Expert during the IESG Evaluation?

No IANA actions and that is written.

  (1.j) Has the Document Shepherd verified that sections of the
        document that are written in a formal language, such as XML
        code, BNF rules, MIB definitions, etc., validate correctly in
        an automated checker?

No formal language

  (1.k) The IESG approval announcement includes a Document
        Announcement Write-Up. Please provide such a Document
        Announcement Write-Up? Recent examples can be found in the
        "Action" announcements for approved documents. The approval
        announcement contains the following sections:

     Technical Summary

This memo discusses potential security issues that arise when using
variable bit rate audio with the secure RTP profile. When using SRTP
with voice streams compressed using variable bit rate (VBR) codecs, the
length of the compressed packets will depend on the characteristics of
the speech signal. This variation in packet size will leak a small
amount of information about the contents of the speech signal.
Guidelines to mitigate these issues are suggested.


     Working Group Summary

There was early on significant debate on how big a security issue this
problem really was. But it was agreed on the need to document the issue
and how the issue can be mitigated. Since then there has been good
consensus on the document.

     Document Quality
        This document has gotten reasonable review from people with both
        RTP and Security focus. The quality of the document is good.
-- 

Magnus Westerlund

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Multimedia Technologies, Ericsson Research EAB/TVM
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