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[COSE] FW: A draft on CBOR Web Tokens (CWT)

Mike Jones <Michael.Jones@microsoft.com> Thu, 12 November 2015 20:44 UTC

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From: Mike Jones <Michael.Jones@microsoft.com>
To: "'cose@ietf.org'" <cose@ietf.org>
Thread-Topic: A draft on CBOR Web Tokens (CWT)
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Cc: Hannes Tschofenig <hannes.tschofenig@gmx.net>, Erik Wahlström <erik.wahlstrom@nexusgroup.com>
Subject: [COSE] FW: A draft on CBOR Web Tokens (CWT)
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This specification, when complete, should meet the need for a general cryptographically secured CBOR application payload format, obviating the urge to jam application fields into COSE headers.  For instance, the “creation time” value that was the subject of issue #13<https://github.com/cose-wg/cose-issues/issues/13> can be replaced by the “issued at” time in CWT.

Thanks to Erik and Hannes for helping to kick this off!

                                                            -- Mike

From: Mike Jones
Sent: Thursday, November 12, 2015 12:39 PM
To: 'Erik Wahlström neXus'; <oauth@ietf.org>
Subject: RE: A draft on CBOR Web Tokens (CWT)


FYI - I also wrote about this at http://self-issued.info/?p=1476 and as @selfissued<https://twitter.com/selfissued>.



-----Original Message-----
From: OAuth [mailto:oauth-bounces@ietf.org] On Behalf Of Erik Wahlström neXus
Sent: Thursday, November 12, 2015 11:26 AM
To: <oauth@ietf.org<mailto:oauth@ietf.org>>
Subject: [OAUTH-WG] A draft on CBOR Web Tokens (CWT)



Hi,



In the ACE WG a straw man proposal of a CBOR Web Token (CWT) was defined in the draft "Authorization for the Internet of Things using OAuth 2.0” [1]. We just broke out the CBOR Web Token into a separate draft and the new draft is submitted to the OAUTH WG. It can be found here:



https://datatracker.ietf.org/doc/draft-wahlstroem-oauth-cbor-web-token/



Abstract:

"CBOR Web Token (CWT) is a compact means of representing claims to be transferred between two parties.  CWT is a profile of the JSON Web Token (JWT) that is optimized for constrained devices. The claims in a CWT are encoded in the Concise Binary Object Representation (CBOR) and CBOR Object Signing and Encryption (COSE) is used for added application layer security protection.  A claim is a piece of information asserted about a subject and is represented as a name/value pair consisting of a claim name and a claim value."



/ Erik





[1] https://tools.ietf.org/html/draft-seitz-ace-oauth-authz-00



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