JSON Web Key (JWK)
draft-ietf-jose-json-web-key-02

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Document Type Active Internet-Draft (jose WG)
Author Michael Jones 
Last updated 2012-05-12
Replaces draft-jones-json-web-key
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JOSE Working Group                                              M. Jones
Internet-Draft                                                 Microsoft
Intended status: Standards Track                            May 12, 2012
Expires: November 13, 2012

                           JSON Web Key (JWK)
                    draft-ietf-jose-json-web-key-02

Abstract

   A JSON Web Key (JWK) is a JSON data structure that represents a
   public key.  This specification also defines a JSON Web Key Set (JWK
   Set) JSON data structure for representing a set of JWKs.
   Cryptographic algorithms and identifiers used with this specification
   are enumerated in the separate JSON Web Algorithms (JWA)
   specification.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on November 13, 2012.

Copyright Notice

   Copyright (c) 2012 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

Jones                   Expires November 13, 2012               [Page 1]
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   (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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . 3
   3.  Example JSON Web Key Set  . . . . . . . . . . . . . . . . . . . 3
   4.  JSON Web Key (JWK) Format . . . . . . . . . . . . . . . . . . . 4
     4.1.  "alg" (Algorithm Family) Parameter  . . . . . . . . . . . . 4
     4.2.  "use" (Key Use) Parameter . . . . . . . . . . . . . . . . . 5
     4.3.  "kid" (Key ID) Parameter  . . . . . . . . . . . . . . . . . 5
   5.  JSON Web Key Set (JWK Set) Format . . . . . . . . . . . . . . . 5
     5.1.  "keys" (JSON Web Key Set) Parameter . . . . . . . . . . . . 5
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 6
     6.1.  JSON Web Key Set Parameters Registry  . . . . . . . . . . . 6
   7.  Security Considerations . . . . . . . . . . . . . . . . . . . . 6
   8.  Open Issues and Things To Be Done (TBD) . . . . . . . . . . . . 6
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 6
     9.1.  Normative References  . . . . . . . . . . . . . . . . . . . 6
     9.2.  Informative References  . . . . . . . . . . . . . . . . . . 7
   Appendix A.  Acknowledgements . . . . . . . . . . . . . . . . . . . 7
   Appendix B.  Document History . . . . . . . . . . . . . . . . . . . 7
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . . . 8

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1.  Introduction

   A JSON Web Key (JWK) is a JSON data structure that represents a
   public key as a JSON object [RFC4627].  This specification also
   defines a JSON Web Key Set (JWK Set) JSON data structure for
   representing a set of JWKs.  Cryptographic algorithms and identifiers
   used with this specification are enumerated in the separate JSON Web
   Algorithms (JWA) [JWA] specification.

   Non-goals for this specification include representing private keys,
   representing symmetric keys, representing certificate chains,
   representing certified keys, and replacing X.509 certificates.

   JWKs are used in the JSON Web Signature (JWS) [JWS] "jwk" (JSON Web
   Key) header parameter and the JSON Web Encryption (JWE) [JWE] "jwk"
   (JSON Web Key) and "epk" (Ephemeral Public Key) header parameters.
   The resources referenced by the JWS "jku" (JWK Set URL) and JWE "jku"
   (JWK Set URL) header parameters contain JWK Sets.
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