Re: Work item suggestion: BBS Cryptosuite for Data Integrity

Hi All,

Following the 7 day period since the original email on this topic and ahead of tomorrows working group meeting, below is a copy of the google doc containing the supporters of this work item.


Tobias Looker / CTO / MATTR (W3C Member)


Manu Sporny / CEO / Digital Bazaar, Inc. (W3C Member)


Markus Sabadello / CEO / Danube Tech GmbH (W3C Member)


Orie Steele / CTO / Transmute (W3C Member)


Brent Zundel / Principal Engineer / Gen (Avast) (W3C Member)


Gabe Cohen / Lead Engineer / Block/TBD (W3C Member)


Andrew Whitehead / Sr Architect / Becker Carroll (W3C Member)


Michael Prorock / CTO (W3C member)


Oliver Terbu / Director of Identity Standards / Spruce Systems, Inc. (W3C Member)


Martin Zulliger / CTO / Jolocom (W3C Member)


Dan Yamamoto / Senior Engineer / IIJ (not a W3C member)


Kazue Sako / Professor / Waseda University ( Invited Expert )


Anil John / Technical Director / U.S. Department of Homeland Security (not a W3C Member)


Stephen Curran / Principal / Cloud Compass Computing Inc. (not a W3C Member)


Dr. Greg Bernstein / Chief Consultant / Grotto Networking / (CCG member, not a W3C Member)


John Jordan / Executive Director, BC Digital Trust / Province of British Columbia (not a W3C member)


Katryna Dow / CEO / Meeco (not a W3C Member)


Patrick St-Louis / DevOps Specialist / Digital Identity Laboratory of

Canada (CCG Member)


Tomislav Markovski / CTO / Trinsic (W3C Member)


bengo / protocol.ai (W3C Member)


Cheng-Kang Chu / Huawei / Senior Researcher / (W3C member)


Ajay Jadhav / CTO / AyanWorks (not a W3C Member)


Snorre Lothar von Gohren Edwin / CTO / Diwala (Invited Expert W3C)

Original document link https://docs.google.com/document/d/1RCQWjqeHL-o6gddXC3kzPy0chEC0rdWQFp1J_xk2HsI/edit


Unfortunately I wont be able to attend the working group call tomorrow because I will be travelling to IETF during this time, but would like to register my vote in absentia in favour of adoption of this work item into the VC WG (which is unlikely to come as a major surprise 😊).

Thanks,
[MATTR website]<https://mattr.global/>

Tobias Looker
MATTR
+64 273 780 461
tobias.looker@mattr.global<mailto:first.last@mattr.global>
[MATTR website]<https://mattr.global/>
[MATTR on LinkedIn]<https://www.linkedin.com/company/mattrglobal>
[MATTR on Twitter]<https://twitter.com/mattrglobal>
[MATTR on Github]<https://github.com/mattrglobal>

This communication, including any attachments, is confidential. If you are not the intended recipient, you should not read it – please contact me immediately, destroy it, and do not copy or use any part of this communication or disclose anything about it. Thank you. Please note that this communication does not designate an information system for the purposes of the Electronic Transactions Act 2002.

From: Tobias Looker <tobias.looker@mattr.global>
Date: Wednesday, 15 March 2023 at 11:41 AM
To: public-vc-wg@w3.org <public-vc-wg@w3.org>
Subject: Work item suggestion: BBS Cryptosuite for Data Integrity
EXTERNAL EMAIL: This email originated outside of our organisation. Do not click links or open attachments unless you recognise the sender and know the content is safe.

Hi all,

Following the VCWG adoption of the VC Data Integrity, this email is to call for the adoption of the BBS crypto suite for usage in this scheme [1].

Since its inception as a CCG work item in 2020, significant work has been put in to mature the underlying cryptographic scheme of BBS which is shown through the adoption of it as a work item of the CFRG and recent publication of our second draft version that contains end to end test vectors which have been verified by multiple independent implementations [2].

Following this we have been working on a revision to the current BbsSignature*2020 suite (formerly know as a Linked Data Proof suite) that will form the basis of this work item that makes use of the latest version of the BBS crypto scheme[2].

BBS represents an important work item for Data Integrity as it enables properties such as selective disclosure and unlinkability.

Given the impending new work item freeze / feature freeze in the VCWG at the end of March 2023, roughly two weeks from now, we need to make the call for adoption of this work item soon.

If you are an organization (or an implementer) that would like to see support for BBS in the VC Data Integrity cryptosuites, then please add your name, title, and organization to the end of this Google Doc:

https://docs.google.com/document/d/1RCQWjqeHL-o6gddXC3kzPy0chEC0rdWQFp1J_xk2HsI/edit


As has been the case for other recent adoption calls we'll be collecting signatures this week, and then running a call for adoption in the VCWG once we have enough signatures. The more signatures of support the better, you don't have to be a W3C Member to sign the letter.

[1] https://w3c-ccg.github.io/ldp-bbs2020/

[2]https://www.ietf.org/archive/id/draft-irtf-cfrg-bbs-signatures-02.html


Thanks,
[MATTR website]<https://mattr.global/>

Tobias Looker
MATTR
+64 273 780 461
tobias.looker@mattr.global<mailto:first.last@mattr.global>
[MATTR website]<https://mattr.global/>
[MATTR on LinkedIn]<https://www.linkedin.com/company/mattrglobal>
[MATTR on Twitter]<https://twitter.com/mattrglobal>
[MATTR on Github]<https://github.com/mattrglobal>

This communication, including any attachments, is confidential. If you are not the intended recipient, you should not read it – please contact me immediately, destroy it, and do not copy or use any part of this communication or disclose anything about it. Thank you. Please note that this communication does not designate an information system for the purposes of the Electronic Transactions Act 2002.