W3C WebAuthn Working Group J. Hodges
Internet-Draft Google
Intended status: Informational G. Mandyam
Expires: September 12, 2019 Qualcomm Technologies Inc.
M. Jones
Microsoft
March 11, 2019
Registries for Web Authentication (WebAuthn)
draft-hodges-webauthn-registries-02
Abstract
This specification defines IANA registries for W3C Web Authentication
attestation statement format identifiers and extension identifiers.
Status of This Memo
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. WebAuthn Attestation Statement Format Identifier Registry . . 2
2.1. Initial WebAuthn Attestation Statement Format Identifier
Registry Values . . . . . . . . . . . . . . . . . . . . . 3
3. WebAuthn Extension Identifier Registry . . . . . . . . . . . 3
3.1. Initial WebAuthn Extension Identifier Registry Values . . 4
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4
4.1. WebAuthn Attestation Statement Format Identifier and
Extension Identifiers Registries . . . . . . . . . . . . 4
5. Security Considerations . . . . . . . . . . . . . . . . . . . 5
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 5
7. Document History . . . . . . . . . . . . . . . . . . . . . . 6
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.1. Normative References . . . . . . . . . . . . . . . . . . 6
8.2. URIs . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 7
1. Introduction
This specification establishes IANA registries for W3C Web
Authentication [WebAuthn] attestation statement format identifiers
and extension identifiers. The initial values for these registries
are in the IANA Considerations section of the [WebAuthn]
specification.
2. WebAuthn Attestation Statement Format Identifier Registry
WebAuthn attestation statement format identifiers are strings whose
semantic, syntactic, and string-matching criteria are specified in
[WebAuthn] Section 8.1 "Attestation Statement Format Identifiers"
[1], along with the concepts of attestation and attestation statement
formats.
WebAuthn attestation statement format identifiers are registered on
the advice of a Designated Expert (appointed by the IESG or their
delegate), with a Specification Required (per [RFC5226]).
The Expert(s) will establish procedures for requesting registrations,
and make them available from the registry page.
Registration requests consist of at least the following information:
o WebAuthn Attestation Statement Format Identifier: This identifier
MUST be a maximum of 32 octets in length and MUST consist only of
printable USASCII characters, excluding backslash and doublequote.
This name is case sensitive. Names may not match other registered
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names in a case-insensitive manner unless the Designated Experts
state that there is a compelling reason to allow an exception.
o Description: A relatively short description of the attestation
format.
o Specification Document: Reference to the specification of the
attestation statement format.
o Notes: [optional]
The Expert(s) MAY define additional fields to be collected in the
registry. Each attestation statement format identifier added to this
registry MUST be unique amongst the set of registered attestation
statement format identifiers. The Experts(s) MAY also designate
attestation statement formats as proprietary if they lack complete
specifications, and will assign a prefix indicating as such to the
identifier.
Registrations MUST reference a freely available specification, e.g.,
as described in [RFC2026] Section 7.
Note that WebAuthn attestation statement format identifiers can be
registered by third parties, if the Expert(s) determine that an
unregistered attestation statement format is widely deployed and not
likely to be registered in a timely manner.
Decisions (or lack thereof) made by the Designated Expert can be
first appealed to Application Area Directors (contactable using app-
ads@tools.ietf.org email address or directly by looking up their
email addresses on http://www.iesg.org/ website) and, if the
appellant is not satisfied with the response, to the full IESG (using
the iesg@iesg.org mailing list).
2.1. Initial WebAuthn Attestation Statement Format Identifier Registry
Values
The initial values for the WebAuthn Attestation Statement Format
Identifier Registry are to be populated from the values listed in
Section 11.1 "WebAuthn Attestation Statement Format Identifier
Registrations" [2] of [WebAuthn].
3. WebAuthn Extension Identifier Registry
WebAuthn extension identifiers are strings whose semantic, syntactic,
and string-matching criteria are specified in [WebAuthn] Section 9.1
"Extension Identifiers" [3].
WebAuthn extension identifiers are registered on the advice of a
Designated Expert (appointed by the IESG or their delegate), with a
Specification Required (per [RFC5226]).
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The Expert(s) will establish procedures for requesting registrations,
and make them available from the registry page.
Registration requests consist of at least the following information:
o WebAuthn Extension Identifier: This identifier MUST be a maximum
of 32 octets in length and MUST consist only of printable USASCII
characters, excluding backslash and doublequote. This name is
case sensitive. Names may not match other registered names in a
case-insensitive manner unless the Designated Experts state that
there is a compelling reason to allow an exception.
o Description: A relatively short description of the extension.
o Specification Document: Reference to the specification of the
extension.
o Notes: [optional]
The Expert(s) MAY define additional fields to be collected in the
registry. Each extension identifier added to this registry MUST be
unique amongst the set of registered extension identifiers.
Registrations MUST reference a freely available specification, e.g.,
as described in [RFC2026] Section 7.
Note that WebAuthn extensions can be registered by third parties, if
the Expert(s) determine that an unregistered extension is widely
deployed and not likely to be registered in a timely manner.
Decisions (or lack thereof) made by the Designated Expert can be
first appealed to Application Area Directors (contactable using app-
ads@tools.ietf.org email address or directly by looking up their
email addresses on http://www.iesg.org/ website) and, if the
appellant is not satisfied with the response, to the full IESG (using
the iesg@iesg.org mailing list).
3.1. Initial WebAuthn Extension Identifier Registry Values
The initial values for the WebAuthn Extension Identifier Registry are
to be populated from the values listed in Section 11.2 "WebAuthn
Extension Identifier Registrations" [4] of [WebAuthn].
4. IANA Considerations
4.1. WebAuthn Attestation Statement Format Identifier and Extension
Identifiers Registries
This specification establishes two registries:
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o the "WebAuthn Attestation Statement Format Identifier" registry;
see Section 2.
o the "WebAuthn Extension Identifier" registry; see Section 3.
For both registries, the Expert(s) and IANA will interact as outlined
below:
IANA will direct any incoming requests regarding the registry to the
processes established by the Expert(s); typically, this will mean
referring them to the registry HTML page.
The Expert(s) will provide registry data to IANA in an agreed form
(e.g., a specific XML format). IANA will publish:
o The raw registry data
o The registry data, transformed into HTML
o The registry data in any alternative formats provided by the
Expert(s)
Each published document will be at a URL agreed to by IANA and the
Expert(s) and IANA will set HTTP response headers on them as
(reasonably) requested by the Expert(s).
Additionally, the HTML generated by IANA will:
o Take directions from the Expert(s) as to the content of the HTML
page's introductory text and markup.
o Include a stable HTML fragment identifier for each registered
attestation statement format identifier or extension identifier.
All registry data documents MUST include Simplified BSD License text
as described in Section 4.e of the Trust Legal Provisions
(<http://trustee.ietf.org/license-info>).
5. Security Considerations
See [WebAuthn] for relevant security considerations.
6. Acknowledgements
Thanks to Mark Nottingham for valuable comments and suggestions.
Thanks to Kathleen Moriarty and Benjamin Kaduk for their Area
Director sponsorship of this specification.
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7. Document History
[[ to be removed by the RFC Editor before publication as an RFC ]]
-02
o Refresh now that the WebAuthn spec is at Recommendation (REC)
maturity level.
-01
o Refresh now that the WebAuthn Committee Recommendation (CR) draft
is pending.
-00
o Initial version.
8. References
8.1. Normative References
[RFC2026] Bradner, S., "The Internet Standards Process -- Revision
3", BCP 9, RFC 2026, DOI 10.17487/RFC2026, October 1996,
<https://www.rfc-editor.org/info/rfc2026>.
[RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", RFC 5226,
DOI 10.17487/RFC5226, May 2008,
<https://www.rfc-editor.org/info/rfc5226>.
[WebAuthn]
Balfanz, D., Czeskis, A., Hodges, J., Jones, J., Jones,
M., Kumar, A., Liao, A., Lindemann, R., and E. Lundberg,
"Web Authentication: An API for accessing Public Key
Credentials", World Wide Web Consortium
(W3C) Recommendation, March 2019,
<https://www.w3.org/TR/2019/REC-webauthn-1-20190304/>.
8.2. URIs
[1] https://www.w3.org/TR/webauthn/#sctn-attstn-fmt-ids
[2] https://www.w3.org/TR/2019/REC-webauthn-1-20190304/#sctn-att-fmt-
reg
[3] https://www.w3.org/TR/webauthn/#sctn-extension-id
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[4] https://www.w3.org/TR/2019/REC-webauthn-1-20190304/#sctn-
extensions-reg
Authors' Addresses
Jeff Hodges
Google
1600 Amphitheater Parkway
Mountain View, California 94043
US
Email: jdhodges@google.com
URI: http://kingsmountain.com/people/Jeff.Hodges/
Giridhar Mandyam
Qualcomm Technologies Inc.
5775 Morehouse Drive
San Diego, California 92121
USA
Phone: +1 858 651 7200
Email: mandyam@qti.qualcomm.com
Michael B. Jones
Microsoft
Email: mbj@microsoft.com
URI: http://self-issued.info/
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