Re: [OAUTH-WG] WG Last Call on the RAR Document

[Dave Tonge <[e-mail]>]

Dear RAR authors

Thank you for your work on this draft - I believe it will be very helpful
to many ecosystems and am in favour of its progression.

A few nits:

*Whole Document*
 - "payment initiation" is I think a PSD2 specific term, I'm not sure about
its use in the document, perhaps just "payment API" is sufficient? If it is
used, perhaps it needs a definition?

*Introduction*
- "enables the AS to *mint* RS-specific" - I wonder whether "mint" is a
well enough understood term?

*Section 2*
 - final example in 2.1 - is the array of authorization details supposed to
be under the `resources` key?

*Section 3*
 - Should PAR be added to 6747,8628 and CIBA in section 3? I know it is
referenced in 12.4, but I think that RAR and PAR fit very well together and
it would be better to call out earlier on in the spec ( it is mentioned
extensively in the security and privacy considerations and so I think
therefore should be mentioned earlier)
 - I suggest that mention is made in section 3 that the RO may grant a
subset of the request authorization details. This is mentioned in section
7.1 but I feel it should be addressed in the authorization section.

*Section 7*
The title for section 7.1 could maybe adjusted to simply "Authorization
details in Token Response" as it deals with both enrichment and a subset
being returned.
In addition I don't think it is clear whether an AS is required to enrich
the authorization details. The statement is made

>  In order to allow the client to determine the
   accounts it is entitled to access, the authorization server will add
   this information to the respective authorization details object.

However a more standard approach currently is that the Client would simply
query an `/accounts` endpoint and would receive accounts to which it has
been given access to - without having to know their identifiers up front.
There could be a situation where a resource owner grants access to all
their accounts (including accounts opened in the future). Having the AS be
required to fill in the account identifiers in the token response could be
restrictive. I think this kind of enrichment is nice, but I suggest that it
be made clear that it is optional.

*Section 12*
* - *typo: "follwowing" -> "following"

Dave




On Mon, 7 Jun 2021 at 22:19, Rifaat Shekh-Yusef <[e-mail]>
wrote:

> All,
>
> This is to start a *WG Last Call *on the *RAR* document, that ends *June
> 22nd.*
> https://datatracker.ietf.org/doc/html/draft-ietf-oauth-rar-05
>
> Please, review the document and provide your feedback on the mailing list.
> A feedback that states that you have reviewed the document and have no
> concerns would also be very helpful.
>
> Regards,
>  Rifaat & Hannes
> _______________________________________________
> OAuth mailing list
> [e-mail]
> https://www.ietf.org/mailman/listinfo/oauth
>


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