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Re: [AGENDA] W3C Credentials CG Call Tue, February 13, 12 noon ET

From: Manu Sporny <msporny@digitalbazaar.com>
Date: Tue, 13 Feb 2018 09:07:28 -0500
To: public-credentials@w3.org
Message-ID: <2a1c3d95-2f7e-1fef-b6a7-843e56240fe1@digitalbazaar.com>
On 02/12/2018 03:27 PM, Steven Rowat wrote:
> So...perhaps ODRL can be integrated somehow with the DID now?

Hmm, no, different technologies for different purposes. Fundamentally:

DIDs can be used as identifiers where you can cryptographically prove
that you are associated with the identifier.

Verifiable Credentials can be used as credentials where an entity can
cryptographically prove that another (or the same) entity thinks you
possess certain desired qualities.

LD Object Capabilities can be used as tokens where an entity can
cryptographically prove that an entity granted them the authority to
perform a class of actions in a software system.

ODRL is useful as a mix-in for Verifiable Credentials. For example, if a
Verifiable Credential claims that you have a Netflix subscription, and
your subscription is expressed via ODRL, then you can use that
Verifiable Credential to get a Capability from Netflix that will allow
you to stream a Netflix movie on any device in the world w/o having to
log in (you will still need to prove, via your DID, that you are sitting
in front of that device).

So, yes, all these things do fit together, but perhaps not in the way
that you were thinking. ODRL is not a replacement for Object Capabilities.

-- manu

-- 
Manu Sporny (skype: msporny, twitter: manusporny, G+: +Manu Sporny)
Founder/CEO - Digital Bazaar, Inc.
blog: The State of W3C Web Payments in 2017
http://manu.sporny.org/2017/w3c-web-payments/
Received on Tuesday, 13 February 2018 14:09:33 UTC

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