JSON Web Key (JWK)
RFC 7517

Document Type RFC - Proposed Standard (May 2015; No errata)
Last updated 2015-05-19
Replaces draft-jones-json-web-key
Stream IETF
Formats plain text pdf html
Stream WG state Submitted to IESG for Publication Jun 2013 Jun 2013 Jan 2014 Jan 2014 Jan 2014
Consensus Yes
Document shepherd Karen O'Donoghue
Shepherd write-up Show (last changed 2014-08-14)
IESG IESG state RFC 7517 (Proposed Standard)
Telechat date
Responsible AD Kathleen Moriarty
Send notices to jose-chairs@ietf.org, draft-ietf-jose-json-web-key@ietf.org
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                          M. Jones
Request for Comments: 7517                                     Microsoft
Category: Standards Track                                       May 2015
ISSN: 2070-1721

                           JSON Web Key (JWK)

Abstract

   A JSON Web Key (JWK) is a JavaScript Object Notation (JSON) data
   structure that represents a cryptographic key.  This specification
   also defines a JWK Set JSON data structure that represents a set of
   JWKs.  Cryptographic algorithms and identifiers for use with this
   specification are described in the separate JSON Web Algorithms (JWA)
   specification and IANA registries established by that specification.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7517.

Copyright Notice

   Copyright (c) 2015 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Jones                        Standards Track                    [Page 1]
RFC 7517                   JSON Web Key (JWK)                   May 2015

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Notational Conventions  . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Example JWK . . . . . . . . . . . . . . . . . . . . . . . . .   5
   4.  JSON Web Key (JWK) Format . . . . . . . . . . . . . . . . . .   5
     4.1.  "kty" (Key Type) Parameter  . . . . . . . . . . . . . . .   6
     4.2.  "use" (Public Key Use) Parameter  . . . . . . . . . . . .   6
     4.3.  "key_ops" (Key Operations) Parameter  . . . . . . . . . .   7
     4.4.  "alg" (Algorithm) Parameter . . . . . . . . . . . . . . .   8
     4.5.  "kid" (Key ID) Parameter  . . . . . . . . . . . . . . . .   8
     4.6.  "x5u" (X.509 URL) Parameter . . . . . . . . . . . . . . .   8
     4.7.  "x5c" (X.509 Certificate Chain) Parameter . . . . . . . .   9
     4.8.  "x5t" (X.509 Certificate SHA-1 Thumbprint) Parameter  . .   9
     4.9.  "x5t#S256" (X.509 Certificate SHA-256 Thumbprint)
           Parameter . . . . . . . . . . . . . . . . . . . . . . . .  10
   5.  JWK Set Format  . . . . . . . . . . . . . . . . . . . . . . .  10
     5.1.  "keys" Parameter  . . . . . . . . . . . . . . . . . . . .  10
   6.  String Comparison Rules . . . . . . . . . . . . . . . . . . .  11
   7.  Encrypted JWK and Encrypted JWK Set Formats . . . . . . . . .  11
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
     8.1.  JSON Web Key Parameters Registry  . . . . . . . . . . . .  12
       8.1.1.  Registration Template . . . . . . . . . . . . . . . .  12
       8.1.2.  Initial Registry Contents . . . . . . . . . . . . . .  13
     8.2.  JSON Web Key Use Registry . . . . . . . . . . . . . . . .  15
       8.2.1.  Registration Template . . . . . . . . . . . . . . . .  15
       8.2.2.  Initial Registry Contents . . . . . . . . . . . . . .  15
     8.3.  JSON Web Key Operations Registry  . . . . . . . . . . . .  16
       8.3.1.  Registration Template . . . . . . . . . . . . . . . .  16
       8.3.2.  Initial Registry Contents . . . . . . . . . . . . . .  16
     8.4.  JSON Web Key Set Parameters Registry  . . . . . . . . . .  17
       8.4.1.  Registration Template . . . . . . . . . . . . . . . .  17
       8.4.2.  Initial Registry Contents . . . . . . . . . . . . . .  18
     8.5.  Media Type Registration . . . . . . . . . . . . . . . . .  18
       8.5.1.  Registry Contents . . . . . . . . . . . . . . . . . .  18
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  19
     9.1.  Key Provenance and Trust  . . . . . . . . . . . . . . . .  20
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