JSON Web Key (JWK)
RFC 7517
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Type |
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RFC - Proposed Standard
(May 2015; No errata)
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Last updated |
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2015-10-14
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Replaces |
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draft-jones-json-web-key
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Stream |
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IETF
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plain text
pdf
htmlized
bibtex
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Reviews |
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Karen O'Donoghue
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Shepherd write-up |
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Show
(last changed 2014-08-14)
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| IESG |
IESG state |
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RFC 7517 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Kathleen Moriarty
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Send notices to |
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(None)
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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RFC-Ed-Ack
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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
9.2. Preventing Disclosure of Non-public Key Information . . . 20
9.3. RSA Private Key Representations and Blinding . . . . . . 21
9.4. Key Entropy and Random Values . . . . . . . . . . . . . . 21
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