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

Fri Sep 18 08:45:02 UTC 2020

Hi Ralph

I don't really like this part:
[image: 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” 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> wrote:

> FYI – speak now or forever hold your peace.
>
>
>
> Kind Regads,
>
> Ralph
>
>
>
> *From: *Joao Daniel Parracho <j.parracho at openbankingeurope.eu>
> *Date: *Wednesday, 16 September 2020 at 17:27
> *Cc: *Nick Pope <nick.pope at openbankingeurope.eu>, "John Broxis (
> j.broxis at preta.eu)" <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
>
>
>
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