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Re: [OAUTH-WG] AD Review of draft-ietf-oauth-jwt-introspection-response-09

Roman Danyliw <rdd@cert.org> Fri, 02 October 2020 17:11 UTC

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From: Roman Danyliw <rdd@cert.org>
To: Torsten Lodderstedt <torsten@lodderstedt.net>
CC: "oauth@ietf.org" <oauth@ietf.org>
Thread-Topic: [OAUTH-WG] AD Review of draft-ietf-oauth-jwt-introspection-response-09
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Date: Fri, 02 Oct 2020 17:11:39 +0000
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Subject: Re: [OAUTH-WG] AD Review of draft-ietf-oauth-jwt-introspection-response-09
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Hi Torsten!

Sorry for my tardy response.  Yes, the proposed edits and explanations address my concerns.

Roman

> -----Original Message-----
> From: Torsten Lodderstedt <torsten@lodderstedt.net>
> Sent: Wednesday, August 26, 2020 8:26 AM
> To: Roman Danyliw <rdd@cert.org>
> Cc: oauth@ietf.org
> Subject: Re: [OAUTH-WG] AD Review of draft-ietf-oauth-jwt-introspection-
> response-09
> 
> Hi Roman,
> 
> thanks for your review feedback.
> 
> > On 21. Aug 2020, at 16:43, Roman Danyliw <rdd@cert.org> wrote:
> >
> > Hi!
> >
> > I conducted an another AD review of draft-ietf-oauth-jwt-introspection-
> response-09.  As background, -07 of this document went to IESG Review and
> the document was brought back to the WG to address the DISCUSS points.
> >
> > Below is my feedback which can be addressed concurrently with IETF LC.
> >
> > ** Section 5.  I want to clarify what are the permissible members of
> token_introspection.  The two relevant text snippets seem to be:
> >
> > (a) "token_introspection  A JSON object containing the members of the
> >           token introspection response, as specified in the "OAuth
> >           Token Introspection Response" registry established by
> >           [RFC7662] as well as other members."
> >
> > (b) "Claims from the "JSON Web Token Claims" registry that are
> >           commonly used in [OpenID.Core] and can be applied to the
> >           resource owner MAY be included as members in the
> >           "token_introspection" claim."
> >
> > -- Per (a), Recommend citing the IANA sub-registry directly --
> https://www.iana.org/assignments/oauth-parameters/oauth-
> parameters.xhtml#token-introspection-response (and not the "as specified in
> the "OAuth Token Introspection Response" registry established by [RFC7662]")
> 
> done
> 
> >
> > -- Per (a), "... as well as other members", what members is this referencing?
> Is that (b)?  Recommend being clear upfront on which exact registries are the
> sources of valid members.
> 
> I reworked the whole paragraph (hrefs for registries not shown).
> 
> As specified in section 2.2. of [RFC7662], specific implementations MAY extend
> the token introspection response with service-specific claims. In the context of
> this specification, such claims will be added as top-level members of the
> token_introspection claim. Response names intended to be used across
> domains MUST be registered in the OAuth Token Introspection Response
> registry defined by [RFC7662]. In addition, claims from the JSON Web Token
> Claims registry established by [RFC7519] MAY be included as members in the
> token_introspection claim. They can serve to convey the privileges delegated to
> the client, to identify the resource owner or to provide a required contact
> detail, such as an e-Mail address or phone number. When transmitting such
> claims the AS acts as an identity provider in regard to the RS. The AS
> determines based on its RS-specific policy what claims about the resource
> owner to return in the token introspection response.
> 
> Does this work for you?
> 
> >
> > -- Per (b), "... commonly used in [OpenId.Core]", what are those specifically?
> Is that claims registered in
> https://www.iana.org/assignments/jwt/jwt.xhtml#claims whose reference is
> [OpenID Connect Core 1.0]?  Recommend being unambiguous in which claims
> are permitted by pointing the IANA registry.
> >
> > -- If I'm understanding right that the source comes either from oauth-
> parameters.xhtml#token-introspection-response or jwt.xhtml#claims, what
> happens if it isn't one of those?
> 
> Every implementation is also free to use their own specific claims. This is
> defined in section 2.2. of RFC
> 
> >
> > ** Section 5.  Per " The AS MUST ensure the release of any privacy-sensitive
> data is legally based", recommend also including a forward reference to Section
> 9
> 
> done
> 
> best regards,
> Torsten.
> 
> >
> > Regards,
> > Roman
> >
> > _______________________________________________
> > OAuth mailing list
> > OAuth@ietf.org
> > https://www.ietf.org/mailman/listinfo/oauth

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