Re: Moving BBS+ signature scheme specification for JSON-LD Signatures into CCG

Likewise, the Province of BC is very keen to be a part of putting these innovations into action.

We would like some help to understand what it is we can do to be most helpful in this regard.

Best  (and recovering from the intensity IIW!)
John


From: Orie Steele <orie@transmute.industries>
Date: Friday, May 1, 2020 at 8:40 AM
To: Manu Sporny <msporny@digitalbazaar.com>
Cc: "W3C Credentials CG (Public List)" <public-credentials@w3.org>
Subject: Re: Moving BBS+ signature scheme specification for JSON-LD Signatures into CCG
Resent-From: <public-credentials@w3.org>
Resent-Date: Friday, May 1, 2020 at 8:40 AM

Obviously supportive of this, let's get it adopted as a work item. We have done our best to get the spec in order, but there are still some issues open which could impact the suite representation significantly... But overall, the was my favorite thing from IIW, and I'm very eager to support both the code and the spec!

On Fri, May 1, 2020, 10:32 AM Manu Sporny <msporny@digitalbazaar.com<mailto:msporny@digitalbazaar.com>> wrote:
On 4/30/20 9:02 PM, Kyle Den Hartog wrote:
> As many of you know from IIW, Mattr has been working on a method to
> achieve selective disclosure with ZKPs in a way that works with JSON-LD
> signatures and plugs directly into vc-js. With that, we've written a
> specification on how this JSON-LD signatures scheme would work and would
> like to move it into the CCG as a work item to go with the LD-proofs work.

Digital Bazaar is deeply supportive of this work because:

* It enables a "dip your toes in the water" approach to ZKPs
  and how they are used in the Verifiable Credentials
  ecosystem.

* It is agnostic to the signature packaging format (JOSE vs.
  LD Proofs), enabling the entire ecosystem to use it.

* It does not require a DLT, and is thus ledger-agnostic.

* It separates selective-disclosure and link secrets, the
  former being useful for a wider variety of use cases than the
  latter.

* It is possible to make it a drop-in technological replacement
  for existing signature schemes, such as
  Ed25519SignatureSuite2018.

There were a number of concerns raised by Nathan George during the IIW
presentation that we feel need to be explored to ensure that we have all
of the security corner cases covered.

We applaud Mattr (Kyle, Tobias, Mike L., and supporting organizations)
for their work in this space. Very excited to see this work move forward.

-- manu

--
Manu Sporny - https://www.linkedin.com/in/manusporny/

Founder/CEO - Digital Bazaar, Inc.
blog: Veres One Decentralized Identifier Blockchain Launches
https://tinyurl.com/veres-one-launches

Received on Friday, 1 May 2020 15:45:30 UTC