Answers to the questions:
> (1) What type of RFC is being requested (BCP, Proposed Standard, Internet
> Standard, Informational, Experimental, or Historic)? Why is this the proper
> type of RFC? Is this type of RFC indicated in the title page header?
I believe this document should be a Proposed Standard RFC as suggested on the
> (2) 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:
> Relevant content can frequently be found in the abstract and/or introduction
> of the document. If not, this may be an indication that there are
> deficiencies in the abstract or introduction.
This specification registers the following algorithms in the IANA "COSE
Algorithms" registry, which are used by WebAuthn and CTAP implementations:
RSASSA-PKCS1-v1_5 using SHA-256, SHA-384, SHA-512, and SHA-1, and ECDSA using
the secp256k1 curve and SHA-256. It registers the secp256k1 elliptic curve in
the IANA "COSE Elliptic Curves" registry. Also, for use with JSON Object
Signing and Encryption (JOSE), it registers the algorithm ECDSA using the
secp256k1 curve and SHA-256 in the IANA "JSON Web Signature and Encryption
Algorithms" registry and the secp256k1 elliptic curve in the IANA "JSON Web Key
Elliptic Curve" registry.
> Working Group Summary:
> Was there anything in WG process that is worth noting? For
> example, was there controversy about particular points or were
> there decisions where the consensus was particularly rough?
The document has had clear working group consensus for publication and it has
been reviewed by a few working group participants since its adoption.
> Document Quality:
> Are there existing implementations of the protocol? Have a significant number
> of vendors indicated their plan to implement the specification? Are there any
> reviewers that merit special mention as having done a thorough review, e.g.,
> one that resulted in important changes or a conclusion that the document had
> no substantive issues? If there was a MIB Doctor, YANG Doctor, Media Type or
> other expert review, what was its course (briefly)? In the case of a Media
> Type review, on what date was the request posted?
John Mattsson, Kevin Jacobs, J.C. Jones, Filip Skokan, Neil Madden, and Jim
Schaad have reviewed versions of this document. All the review issues have been
addressed and no review comments or issues are currently pending.
> Who is the Document Shepherd? Who is the Responsible Area Director?
Document Shepherd: Ivaylo Petrov (COSE WG chair)
AD: Benjamin Kaduk (Sec AD)
> (3) Briefly describe the review of this document that was performed by the
> Document Shepherd. If this version of the document is not ready for
> publication, please explain why the document is being forwarded to the IESG.
I completed a review of the document. No outstanding issues were found.
> (4) Does the document Shepherd have any concerns about the depth or breadth
> of the reviews that have been performed?
No, given the number of reviews and the relative shortness of the document, I
believe it has had sufficient reviews.
> (5) Do portions of the document need review from a particular or from broader
> perspective, e.g., security, operational complexity, AAA, DNS, DHCP, XML, or
> internationalization? If so, describe the review that took place.
> (6) Describe any specific concerns or issues that the Document Shepherd has
> 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.
No concerns or issues.
> (7) Has each author confirmed that any and all appropriate IPR disclosures
> required for full conformance with the provisions of BCP 78 and BCP 79 have
> already been filed. If not, explain why?
Yes, the authors have confirmed that they are not aware of any IPR.
> (8) Has an IPR disclosure been filed that references this document? If so,
> summarize any WG discussion and conclusion regarding the IPR disclosures.
> (9) 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?
From my perspective, the WG understands and agrees with the proposed draft
without any other alternatives being provided.
> (10) 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 publicly available.)
> (11) Identify any ID nits the Document Shepherd has found in this document.
> (See http://www.ietf.org/tools/idnits/ and the Internet-Drafts Checklist).
> Boilerplate checks are not enough; this check needs to be thorough.
The only points made by the idnits tool were related to possible downward
normative references - discussed separately in (15).
> (12) Describe how the document meets any required formal review criteria,
> such as the MIB Doctor, YANG Doctor, media type, and URI type reviews.
I am not aware of any formal review criteria that apply to this document. The
hash algorithms for which it defines COSE Algorithm Identifiers have passed
> (13) Have all references within this document been identified as either
> normative or informative?
> (14) 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 plan for their completion?
No, all normative references are in a clear state.
> (15) Are there downward normative references references (see RFC 3967)? If
> so, list these downward references to support the Area Director in the Last
> Call procedure.
There are downward normative references to the informational documents:
* RFC6194 which contains relevant information about the use of SHA1. As the
document defines an algorithm identifier for RSASSA-PKCS1-v1_5 with SHA-1 for
historical reasons, this information is important and the normative reference
* RFC8017 relates to the definition of RSASSA-PKCS1-v1_5, which is central to
understanding this document. Therefore this downward reference seems
acceptable as well.
and documents from outside IETF:
* DSS - comes from NIST. It is crucial for the understanding of one part of the
document and as traditionally NIST has been an acceptable reference point, I
consider this reference acceptable as well.
* SEC1 and SEC2 - seem needed in order to understand the security
considerations of the document. Referencing those documents seems thus
important and acceptable.
> (16) Will publication of this document change the status of any existing
> RFCs? Are those RFCs listed on the title page header, listed in the
> abstract, and discussed in the introduction? If the RFCs are not listed in
> the Abstract and Introduction, explain why, and point to the part of the
> document where the relationship of this document to the other RFCs is
> discussed. If this information is not in the document, explain why the WG
> considers it unnecessary.
> (17) Describe the Document Shepherd's review of the IANA considerations
> section, especially with regard to its consistency with the body of the
> document. Confirm that all protocol extensions that the document makes are
> associated with the appropriate reservations in IANA registries. Confirm that
> any referenced IANA registries have been clearly identified. Confirm that
> newly created IANA registries include a detailed specification of the initial
> contents for the registry, that allocations procedures for future
> registrations are defined, and a reasonable name for the new registry has
> been suggested (see RFC 8126).
The document adds a number of values to IANA "COSE Algorithms" registry, IANA
"COSE Elliptic Curves" registry, IANA "JSON Web Signature and Encryption
Algorithms" registry and IANA "JSON Web Key Elliptic Curve" registry. For
those, all the necessary information is provided.
> (18) List any new IANA registries that require Expert Review for future
> allocations. Provide any public guidance that the IESG would find useful in
> selecting the IANA Experts for these new registries.
No new IANA registries.
> (19) Describe reviews and automated checks performed by the Document Shepherd
> to validate sections of the document written in a formal language, such as
> XML code, BNF rules, MIB definitions, YANG modules, etc.
There is no code in this document written in a formal language and therefore no
validation was needed.
> (20) If the document contains a YANG module, has the module been checked with
> any of the recommended validation tools
> (https://trac.ietf.org/trac/ops/wiki/yang-review-tools) for syntax and
> formatting validation? If there are any resulting errors or warnings, what is
> the justification for not fixing them at this time? Does the YANG module
> comply with the Network Management Datastore Architecture (NMDA) as specified
> in RFC8342?
No YANG modules are defined by this document.