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Re: Credential Chaining

From: Adrian Gropper <agropper@healthurl.com>
Date: Wed, 29 Jun 2022 14:32:44 -0400
Message-ID: <CANYRo8h822ao3Xa5q-o0p-2_-0vSL0=0LAtbb-rDUSB84Dihfg@mail.gmail.com>
To: Dmitri Zagidulin <dzagidulin@gmail.com>
Cc: Brent Shambaugh <brent.shambaugh@gmail.com>, Credentials Community Group <public-credentials@w3.org>
In a "User-Centric Request Model", a presentation is a signed request that
includes a Scope (of processing) and a Purpose (of processing) related to a
real-world transaction. In a zero-trust architecture, the signer of the
request is held accountable.

VP Exchange, VP Request, OIDC4VP seem to be intended as components of a
user-centric (authorization) request. From my perspective, standardizing
the authorization request and the processing capability outcome are
essential to interoperability. Standardizing the subsidiary protocols is
useful, of course, but only to the extent they are not competing with other
ways of doing exchange, authentication, or prompting for what is needed to
process a transaction.

- Adrian

On Wed, Jun 29, 2022 at 2:03 PM Dmitri Zagidulin <dzagidulin@gmail.com>
wrote:

> 'Verifiable Presentation' is a data model. DOING stuff with them involves
> protocols - so, we have VP Exchange protocol, VP Request spec, OIDC4VP
> protocol, etc.
>
> On Wed, Jun 29, 2022 at 1:30 PM Adrian Gropper <agropper@healthurl.com>
> wrote:
>
>> Are Verifiable Presentations a data model or a protocol?
>>
>> - Adrian
>>
>> On Wed, Jun 29, 2022 at 1:23 PM Brent Shambaugh <
>> brent.shambaugh@gmail.com> wrote:
>>
>>> I’m sure I could go look this up and mull on it more. My mind drifts to
>>> verifiable presentations and somehow verifying the content and not just the
>>> signature. The internet will be repaired soon.
>>>
>>> On Wednesday, June 29, 2022, Brent Shambaugh <brent.shambaugh@gmail.com>
>>> wrote:
>>>
>>>> Is there such a thing as credentials that can only be issued if the
>>>> holder already has a particular credential?
>>>>
>>>> --
>>>> -Brent Shambaugh
>>>>
>>>> GitHub: https://github.com/bshambaugh
>>>> Website: http://bshambaugh.org/
>>>> LinkedIN: https://www.linkedin.com/in/brent-shambaugh-9b91259
>>>> Skype: brent.shambaugh
>>>> Twitter: https://twitter.com/Brent_Shambaugh
>>>> WebID: http://bshambaugh.org/foaf.rdf#me
>>>>
>>>
>>>
>>> --
>>> -Brent Shambaugh
>>>
>>> GitHub: https://github.com/bshambaugh
>>> Website: http://bshambaugh.org/
>>> LinkedIN: https://www.linkedin.com/in/brent-shambaugh-9b91259
>>> Skype: brent.shambaugh
>>> Twitter: https://twitter.com/Brent_Shambaugh
>>> WebID: http://bshambaugh.org/foaf.rdf#me
>>>
>>
Received on Wednesday, 29 June 2022 18:33:08 UTC

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