JOSE Working Group M. Jones
Internet-Draft Microsoft
Intended status: Standards Track J. Bradley
Expires: October 27, 2013 Ping Identity
N. Sakimura
NRI
April 25, 2013
JSON Web Signature (JWS)
draft-ietf-jose-json-web-signature-10
Abstract
JSON Web Signature (JWS) is a means of representing content secured
with digital signatures or Message Authentication Codes (MACs) using
JavaScript Object Notation (JSON) data structures. Cryptographic
algorithms and identifiers for use with this specification are
described in the separate JSON Web Algorithms (JWA) specification.
Related encryption capabilities are described in the separate JSON
Web Encryption (JWE) specification.
Status of this Memo
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Notational Conventions . . . . . . . . . . . . . . . . . . 4
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. JSON Web Signature (JWS) Overview . . . . . . . . . . . . . . 6
3.1. Example JWS . . . . . . . . . . . . . . . . . . . . . . . 6
4. JWS Header . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1. Reserved Header Parameter Names . . . . . . . . . . . . . 8
4.1.1. "alg" (Algorithm) Header Parameter . . . . . . . . . . 8
4.1.2. "jku" (JWK Set URL) Header Parameter . . . . . . . . . 8
4.1.3. "jwk" (JSON Web Key) Header Parameter . . . . . . . . 9
4.1.4. "x5u" (X.509 URL) Header Parameter . . . . . . . . . . 9
4.1.5. "x5t" (X.509 Certificate Thumbprint) Header
Parameter . . . . . . . . . . . . . . . . . . . . . . 9
4.1.6. "x5c" (X.509 Certificate Chain) Header Parameter . . . 9
4.1.7. "kid" (Key ID) Header Parameter . . . . . . . . . . . 10
4.1.8. "typ" (Type) Header Parameter . . . . . . . . . . . . 10
4.1.9. "cty" (Content Type) Header Parameter . . . . . . . . 10
4.1.10. "crit" (Critical) Header Parameter . . . . . . . . . . 11
4.2. Public Header Parameter Names . . . . . . . . . . . . . . 11
4.3. Private Header Parameter Names . . . . . . . . . . . . . . 11
5. Producing and Consuming JWSs . . . . . . . . . . . . . . . . . 11
5.1. Message Signing or MACing . . . . . . . . . . . . . . . . 12
5.2. Message Signature or MAC Validation . . . . . . . . . . . 13
5.3. String Comparison Rules . . . . . . . . . . . . . . . . . 14
6. Securing JWSs with Cryptographic Algorithms . . . . . . . . . 14
7. JSON Serialization . . . . . . . . . . . . . . . . . . . . . . 15
7.1. Example JWS-JS . . . . . . . . . . . . . . . . . . . . . . 15
8. Implementation Considerations . . . . . . . . . . . . . . . . 17
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 17
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