Re: [OAUTH-WG] JSON Web Token Best Current Practices draft describing Explicit Typing

[Mike Jones <[e-mail]>]

I propose that the following text be added to address your comment, Brian.  Does this text work for you?

When applying explicit typing to a Nested JWT, the "typ" header parameter containing the explicit type value MUST be present in the inner JWT of the Nested JWT (the JWT whose payload is the JWT Claims Set).  The same "typ" header parameter value MAY be present in the outer JWT as well, to explicitly type the entire Nested JWT.

                                                       -- Mike

From: Brian Campbell <[e-mail]>
Sent: Monday, July 17, 2017 10:53 AM
To: Phil Hunt (IDM) <[e-mail]>
Cc: Mike Jones <[e-mail]>; [e-mail]
Subject: Re: [OAUTH-WG] JSON Web Token Best Current Practices draft describing Explicit Typing

Could some more guidance be provided around how to use the explicit typing with nested JWTs?
I'd imagine that the "typ" header should be in the header of the JWT that is integrity protected by the issuer?

On Tue, Jul 4, 2017 at 9:58 PM, Phil Hunt (IDM) <[e-mail]<mailto:[e-mail]>> wrote:
+1

Thanks Mike.

Phil

On Jul 4, 2017, at 12:43 PM, Mike Jones <[e-mail]<mailto:[e-mail]>> wrote:
The JWT BCP draft has been updated to describe the use of explicit typing of JWTs as one of the ways to prevent confusion among different kinds of JWTs.  This is accomplished by including an explicit type for the JWT in the “typ” header parameter.  For instance, the Security Event Token (SET) specification<http://self-issued.info/?p=1709> now uses the “application/secevent+jwt” content type to explicitly type SETs.

The specification is available at:

  *   https://tools.ietf.org/html/draft-sheffer-oauth-jwt-bcp-01

An HTML-formatted version is also available at:

  *   http://self-issued.info/docs/draft-sheffer-oauth-jwt-bcp-01.html

                                                       -- Mike

P.S.  This notice was also posted at http://self-issued.info/?p=1714 and as @selfissued<https://twitter.com/selfissued>.
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