draft-ietf-jose-json-web-key-06.txt   draft-ietf-jose-json-web-key-07.txt 
JOSE Working Group M. Jones JOSE Working Group M. Jones
Internet-Draft Microsoft Internet-Draft Microsoft
Intended status: Standards Track October 15, 2012 Intended status: Standards Track November 6, 2012
Expires: April 18, 2013 Expires: May 10, 2013
JSON Web Key (JWK) JSON Web Key (JWK)
draft-ietf-jose-json-web-key-06 draft-ietf-jose-json-web-key-07
Abstract Abstract
A JSON Web Key (JWK) is a JavaScript Object Notation (JSON) data A JSON Web Key (JWK) is a JavaScript Object Notation (JSON) data
structure that represents a public key. This specification also structure that represents a public key. This specification also
defines a JSON Web Key Set (JWK Set) JSON data structure for defines a JSON Web Key Set (JWK Set) JSON data structure for
representing a set of JWKs. Cryptographic algorithms and identifiers representing a set of JWKs. Cryptographic algorithms and identifiers
for use with this specification are described in the separate JSON for use with this specification are described in the separate JSON
Web Algorithms (JWA) specification. Web Algorithms (JWA) specification.
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
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time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on April 18, 2013. This Internet-Draft will expire on May 10, 2013.
Copyright Notice Copyright Notice
Copyright (c) 2012 IETF Trust and the persons identified as the Copyright (c) 2012 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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3. Example JSON Web Key Set . . . . . . . . . . . . . . . . . . . 4 3. Example JSON Web Key Set . . . . . . . . . . . . . . . . . . . 4
4. JSON Web Key (JWK) Format . . . . . . . . . . . . . . . . . . 4 4. JSON Web Key (JWK) Format . . . . . . . . . . . . . . . . . . 4
4.1. "alg" (Algorithm Family) Parameter . . . . . . . . . . . . 5 4.1. "alg" (Algorithm Family) Parameter . . . . . . . . . . . . 5
4.2. "use" (Key Use) Parameter . . . . . . . . . . . . . . . . 5 4.2. "use" (Key Use) Parameter . . . . . . . . . . . . . . . . 5
4.3. "kid" (Key ID) Parameter . . . . . . . . . . . . . . . . . 5 4.3. "kid" (Key ID) Parameter . . . . . . . . . . . . . . . . . 5
5. JSON Web Key Set (JWK Set) Format . . . . . . . . . . . . . . 6 5. JSON Web Key Set (JWK Set) Format . . . . . . . . . . . . . . 6
5.1. "keys" (JSON Web Key Set) Parameter . . . . . . . . . . . 6 5.1. "keys" (JSON Web Key Set) Parameter . . . . . . . . . . . 6
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6
6.1. JSON Web Key Parameters Registry . . . . . . . . . . . . . 7 6.1. JSON Web Key Parameters Registry . . . . . . . . . . . . . 7
6.1.1. Registration Template . . . . . . . . . . . . . . . . 7 6.1.1. Registration Template . . . . . . . . . . . . . . . . 7
6.1.2. Initial Registry Contents . . . . . . . . . . . . . . 7 6.1.2. Initial Registry Contents . . . . . . . . . . . . . . 8
6.2. JSON Web Key Set Parameters Registry . . . . . . . . . . . 8 6.2. JSON Web Key Set Parameters Registry . . . . . . . . . . . 8
6.2.1. Registration Template . . . . . . . . . . . . . . . . 8 6.2.1. Registration Template . . . . . . . . . . . . . . . . 8
6.2.2. Initial Registry Contents . . . . . . . . . . . . . . 8 6.2.2. Initial Registry Contents . . . . . . . . . . . . . . 8
7. Security Considerations . . . . . . . . . . . . . . . . . . . 8 7. Security Considerations . . . . . . . . . . . . . . . . . . . 9
8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 9 8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8.1. Normative References . . . . . . . . . . . . . . . . . . . 9 8.1. Normative References . . . . . . . . . . . . . . . . . . . 9
8.2. Informative References . . . . . . . . . . . . . . . . . . 9 8.2. Informative References . . . . . . . . . . . . . . . . . . 10
Appendix A. Acknowledgements . . . . . . . . . . . . . . . . . . 10 Appendix A. Acknowledgements . . . . . . . . . . . . . . . . . . 10
Appendix B. Open Issues . . . . . . . . . . . . . . . . . . . . . 10 Appendix B. Open Issues . . . . . . . . . . . . . . . . . . . . . 10
Appendix C. Document History . . . . . . . . . . . . . . . . . . 10 Appendix C. Document History . . . . . . . . . . . . . . . . . . 10
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 12 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 12
1. Introduction 1. Introduction
A JSON Web Key (JWK) is a JavaScript Object Notation (JSON) [RFC4627] A JSON Web Key (JWK) is a JavaScript Object Notation (JSON) [RFC4627]
data structure that represents a public key. This specification also data structure that represents a public key. This specification also
defines a JSON Web Key Set (JWK Set) JSON data structure for defines a JSON Web Key Set (JWK Set) JSON data structure for
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{"keys": {"keys":
[ [
{"alg":"EC", {"alg":"EC",
"crv":"P-256", "crv":"P-256",
"x":"MKBCTNIcKUSDii11ySs3526iDZ8AiTo7Tu6KPAqv7D4", "x":"MKBCTNIcKUSDii11ySs3526iDZ8AiTo7Tu6KPAqv7D4",
"y":"4Etl6SRW2YiLUrN5vfvVHuhp7x8PxltmWWlbbM4IFyM", "y":"4Etl6SRW2YiLUrN5vfvVHuhp7x8PxltmWWlbbM4IFyM",
"use":"enc", "use":"enc",
"kid":"1"}, "kid":"1"},
{"alg":"RSA", {"alg":"RSA",
"mod": "0vx7agoebGcQSuuPiLJXZptN9nndrQmbXEps2aiAFbWhM78LhWx "n": "0vx7agoebGcQSuuPiLJXZptN9nndrQmbXEps2aiAFbWhM78LhWx
4cbbfAAtVT86zwu1RK7aPFFxuhDR1L6tSoc_BJECPebWKRXjBZCiFV4n3oknjhMs 4cbbfAAtVT86zwu1RK7aPFFxuhDR1L6tSoc_BJECPebWKRXjBZCiFV4n3oknjhMs
tn64tZ_2W-5JsGY4Hc5n9yBXArwl93lqt7_RN5w6Cf0h4QyQ5v-65YGjQR0_FDW2 tn64tZ_2W-5JsGY4Hc5n9yBXArwl93lqt7_RN5w6Cf0h4QyQ5v-65YGjQR0_FDW2
QvzqY368QQMicAtaSqzs8KJZgnYb9c7d0zgdAZHzu6qMQvRL5hajrn1n91CbOpbI QvzqY368QQMicAtaSqzs8KJZgnYb9c7d0zgdAZHzu6qMQvRL5hajrn1n91CbOpbI
SD08qNLyrdkt-bFTWhAI4vMQFh6WeZu0fM4lFd2NcRwr3XPksINHaQ-G_xBniIqb SD08qNLyrdkt-bFTWhAI4vMQFh6WeZu0fM4lFd2NcRwr3XPksINHaQ-G_xBniIqb
w0Ls1jF44-csFCur-kEgU8awapJzKnqDKgw", w0Ls1jF44-csFCur-kEgU8awapJzKnqDKgw",
"xpo":"AQAB", "e":"AQAB",
"kid":"2011-04-29"} "kid":"2011-04-29"}
] ]
} }
4. JSON Web Key (JWK) Format 4. JSON Web Key (JWK) Format
A JSON Web Key (JWK) is a JSON object containing specific members, as A JSON Web Key (JWK) is a JSON object containing specific members, as
specified below. Those members that are common to all key types are specified below. Those members that are common to all key types are
defined below. defined below.
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IANA must only accept registry updates from the Designated Expert(s) IANA must only accept registry updates from the Designated Expert(s)
and should direct all requests for registration to the review mailing and should direct all requests for registration to the review mailing
list. list.
6.1. JSON Web Key Parameters Registry 6.1. JSON Web Key Parameters Registry
This specification establishes the IANA JSON Web Key Parameters This specification establishes the IANA JSON Web Key Parameters
registry for reserved JWK parameter names. The registry records the registry for reserved JWK parameter names. The registry records the
reserved parameter name and a reference to the specification that reserved parameter name and a reference to the specification that
defines it. This specification registers the parameter names defined defines it. This specification registers the parameter names defined
in Section 4. in Section 4. The same JWK parameter name may be registered multiple
times, provided that duplicate parameter registrations are only for
algorithm-specific JWK parameters; in this case, the meaning of the
duplicate parameter name is disambiguated by the "alg" value of the
JWK containing it.
6.1.1. Registration Template 6.1.1. Registration Template
Parameter Name: Parameter Name:
The name requested (e.g., "example"). This name is case The name requested (e.g., "example"). This name is case
sensitive. Names that match other registered names in a case sensitive. Names that match other registered names in a case
insensitive manner SHOULD NOT be accepted. insensitive manner SHOULD NOT be accepted.
Change Controller: Change Controller:
For Standards Track RFCs, state "IETF". For others, give the name For Standards Track RFCs, state "IETF". For others, give the name
skipping to change at page 9, line 24 skipping to change at page 9, line 30
The security considerations in XML DSIG 2.0 The security considerations in XML DSIG 2.0
[W3C.CR-xmldsig-core2-20120124], about public key representations [W3C.CR-xmldsig-core2-20120124], about public key representations
also apply to this specification, other than those that are XML also apply to this specification, other than those that are XML
specific. specific.
8. References 8. References
8.1. Normative References 8.1. Normative References
[JWA] Jones, M., "JSON Web Algorithms (JWA)", October 2012. [JWA] Jones, M., "JSON Web Algorithms (JWA)", November 2012.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997. Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC4627] Crockford, D., "The application/json Media Type for [RFC4627] Crockford, D., "The application/json Media Type for
JavaScript Object Notation (JSON)", RFC 4627, July 2006. JavaScript Object Notation (JSON)", RFC 4627, July 2006.
[RFC4648] Josefsson, S., "The Base16, Base32, and Base64 Data [RFC4648] Josefsson, S., "The Base16, Base32, and Base64 Data
Encodings", RFC 4648, October 2006. Encodings", RFC 4648, October 2006.
[RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an [RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", BCP 26, RFC 5226, IANA Considerations Section in RFCs", BCP 26, RFC 5226,
May 2008. May 2008.
[W3C.CR-xmldsig-core2-20120124] [W3C.CR-xmldsig-core2-20120124]
Roessler, T., Yiu, K., Solo, D., Reagle, J., Datta, P., Reagle, J., Solo, D., Datta, P., Hirsch, F., Eastlake, D.,
Eastlake, D., Hirsch, F., and S. Cantor, "XML Signature Cantor, S., Roessler, T., and K. Yiu, "XML Signature
Syntax and Processing Version 2.0", World Wide Web Syntax and Processing Version 2.0", World Wide Web
Consortium CR CR-xmldsig-core2-20120124, January 2012, Consortium CR CR-xmldsig-core2-20120124, January 2012,
<http://www.w3.org/TR/2012/CR-xmldsig-core2-20120124>. <http://www.w3.org/TR/2012/CR-xmldsig-core2-20120124>.
8.2. Informative References 8.2. Informative References
[JWE] Jones, M., Rescorla, E., and J. Hildebrand, "JSON Web [JWE] Jones, M., Rescorla, E., and J. Hildebrand, "JSON Web
Encryption (JWE)", October 2012. Encryption (JWE)", November 2012.
[JWS] Jones, M., Bradley, J., and N. Sakimura, "JSON Web [JWS] Jones, M., Bradley, J., and N. Sakimura, "JSON Web
Signature (JWS)", October 2012. Signature (JWS)", November 2012.
[MagicSignatures] [MagicSignatures]
Panzer (editor), J., Laurie, B., and D. Balfanz, "Magic Panzer (editor), J., Laurie, B., and D. Balfanz, "Magic
Signatures", January 2011. Signatures", January 2011.
[RFC4122] Leach, P., Mealling, M., and R. Salz, "A Universally [RFC4122] Leach, P., Mealling, M., and R. Salz, "A Universally
Unique IDentifier (UUID) URN Namespace", RFC 4122, Unique IDentifier (UUID) URN Namespace", RFC 4122,
July 2005. July 2005.
Appendix A. Acknowledgements Appendix A. Acknowledgements
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[[ to be removed by the RFC editor before publication as an RFC ]] [[ to be removed by the RFC editor before publication as an RFC ]]
The following items remain to be considered or done in this draft: The following items remain to be considered or done in this draft:
o No known open issues. o No known open issues.
Appendix C. Document History Appendix C. Document History
[[ to be removed by the RFC editor before publication as an RFC ]] [[ to be removed by the RFC editor before publication as an RFC ]]
-07
o Changed the name of the JWK RSA modulus parameter from "mod" to
"n" and the name of the JWK RSA exponent parameter from "xpo" to
"e", so that the identifiers are the same as those used in RFC
3447.
-06 -06
o Changed the name of the JWK RSA exponent parameter from "exp" to o Changed the name of the JWK RSA exponent parameter from "exp" to
"xpo" so as to allow the potential use of the name "exp" for a "xpo" so as to allow the potential use of the name "exp" for a
future extension that might define an expiration parameter for future extension that might define an expiration parameter for
keys. (The "exp" name is already used for this purpose in the JWT keys. (The "exp" name is already used for this purpose in the JWT
specification.) specification.)
o Clarify that the "alg" (algorithm family) member is REQUIRED. o Clarify that the "alg" (algorithm family) member is REQUIRED.
 End of changes. 14 change blocks. 
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