[Openid-specs-fapi] FW: OBE JWS Profile - Version 0.10b for Approval

Ralph Bragg ralph.bragg at raidiam.com
Fri Sep 18 08:46:29 UTC 2020


Hi,

It’s not too late to input back.

RB

Ralph Bragg
Raidiam Services Ltd

Sent from a mobile device. Please excuse brevity and typos.
________________________________
From: Dave Tonge <dave.tonge at momentumft.co.uk>
Sent: Friday, September 18, 2020 9:45:02 AM
To: FAPI Working Group List <openid-specs-fapi at lists.openid.net>
Cc: Ralph Bragg <ralph.bragg at raidiam.com>; Francis Pouatcha <fpo=40adorsys.de at dmarc.ietf.org>; Justin Richer <justin at bspk.io>
Subject: Re: [Openid-specs-fapi] FW: OBE JWS Profile - Version 0.10b for Approval

Hi Ralph

I don't really like this part:
[Screenshot 2020-09-17 at 14.26.45.png]

I suppose its too late to change it, but this is the same issue I have with draft-cavage / http signing

I would rather take the dpop approach and create some top level key names for relevant headers (e.g. htm and htu): https://tools.ietf.org/html/draft-fett-oauth-dpop-04#section-4.1

In fact I see they are actually relying on draft-cavage for how construct the http header payload :
> Note 1: The string construction procedures to be defined in JAdES for "http:
> //uri.etsi.org/19182/HttpHeaders<http://uri.etsi.org/19182/HttpHeaders>” follow the string construction procedures to create the Data to be
> Signed as defined in draft-cavage-http-signatures-10 [27], section 2.3.

As noted before this is an individual draft, I don't think an international standard should rely on this.

I think we need to consider moving away from recommending headers for business critical metadata. Really things like ip address, geo-location and other fraud factors should be put in the body of the request. Then we can recommend that the simplest and least error prone way of signing can be to turn the request body into a JWT.

I would prefer an extension to DPoP that defines how to sign the digest header.

Dave





On Wed, 16 Sep 2020 at 19:16, Ralph Bragg via Openid-specs-fapi <openid-specs-fapi at lists.openid.net<mailto:openid-specs-fapi at lists.openid.net>> wrote:

FYI – speak now or forever hold your peace.



Kind Regads,

Ralph



From: Joao Daniel Parracho <j.parracho at openbankingeurope.eu<mailto:j.parracho at openbankingeurope.eu>>
Date: Wednesday, 16 September 2020 at 17:27
Cc: Nick Pope <nick.pope at openbankingeurope.eu<mailto:nick.pope at openbankingeurope.eu>>, "John Broxis (j.broxis at preta.eu<mailto:j.broxis at preta.eu>)" <j.broxis at preta.eu<mailto:j.broxis at preta.eu>>
Subject: OBE JWS Profile - Version 0.10b for Approval



Dear Colleagues,



OBE is pleased to distribute the OBE JWS Profile version 0.10b for your approval.  This has minor changes from the version 0.0.9 distributed earlier this year as listed in the document “Comments on OBE JWS profile v 0.9” and with specific revisions shown in document “PRETA-OBE-ID-000-010b-OBE JWS- proposed final draft for approval-with revs”.



It is proposed to finalise this approval at a meeting API and ETSI signature format experts on 22nd October at 15:00 CEST.  Can you let us known if you approve or have any remaining concerns with this document at least 1 week before this meeting date?  Also, if you wish to attend the meeting on 22nd October and are unable to make this date please let us know  as soon as possible.



Kind regards,

João

João Parracho

Communications & Engagement Consultant | Open Banking Europe

j.parracho at openbankingeurope.eu<mailto:j.parracho at openbankingeurope.eu>



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