RE: ETSI TR 119 476 on selective disclosure

Hi Steve,

Thanks for your feedback! We’ll gather all kind of feedback on the technical report for a period of time, then present it to the ETSI management with the intention to get a work item to update the technical report accordingly.

Kind regards,
Sebastian

From: Steve Capell <steve.capell@gmail.com>
Sent: Monday, 28 August 2023 23:46
To: Michael Prorock <mprorock@mesur.io>
Cc: W3C Credentials CG <public-credentials@w3.org>; Sebastian Elfors <sebastian.elfors@idnow.de>
Subject: Re: ETSI TR 119 476 on selective disclosure

You don't often get email from steve.capell@gmail.com<mailto:steve.capell@gmail.com>. Learn why this is important<https://aka.ms/LearnAboutSenderIdentification>


CAUTION: This email originated from outside the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.
Very nice analysis - thanks Sebastian

Just one thing - the salted hash approach that you present has been used for several years now by the Singapore govt with their open attestation protocol and trade trust implementation.

The main use case is in supply chain traceability & transparency where downstream parties (who are usually neither the issuer nor the subject) are empowered to redact data they consider to he commercially sensitive before passing tge credentials further along the supply chain

[cid:image001.png@01D9DA5A.E3CCC560]
Document Integrity<https://www.openattestation.com/docs/docs-section/how-does-it-work/document-integrity>
openattestation.com<https://www.openattestation.com/docs/docs-section/how-does-it-work/document-integrity>

Steven Capell
Mob: 0410 437854


On 28 Aug 2023, at 10:41 pm, Michael Prorock <mprorock@mesur.io<mailto:mprorock@mesur.io>> wrote:

Passing this along to the CCG list as well.
Mike Prorock
CTO - mesur.io<http://mesur.io/>

---------- Forwarded message ---------
From: Sebastian Elfors <>
Date: Mon, Aug 28, 2023, 05:48
Subject: ETSI TR 119 476 on selective disclosure
To: public-vc-wg@w3.org<mailto:public-vc-wg@w3.org> <public-vc-wg@w3.org<mailto:public-vc-wg@w3.org>>

All,

ETSI has now published the technical report TR 119 476 on selective disclosure<https://www.etsi.org/deliver/etsi_tr/119400_119499/119476/01.01.01_60/tr_119476v010101p.pdf>, which has been authored by me together with Peter Altmann (Swedish Agency for Digital Government). It provides a comprehensive overview of methods for selective disclosure in general, and an analysis of how these methods can be applied for the EUDI Wallet in particular. This could potentially be of interest to W3C VC WG and the related work on standards for ZKP and selective disclosure. Please let us know if you have any feedback or want to discuss this report at a meeting.

Kind regards,
Sebastian Elfors
Senior Architect

T             +49 (0)174 17 22 150
E             sebastian.elfors@idnow.io<mailto:sebastian.elfors@idnow.de>

IDnow.io<https://www.idnow.io/?utm_source=signature&utm_medium=email&utm_campaign=signature>  |  LinkedIn<https://www.linkedin.com/company/idnow?utm_source=signature&utm_medium=email&utm_campaign=signature>   | Instagram<https://www.instagram.com/idnow_careers>

IDnow GmbH Auenstraße 100, 80469 Munich
Registration Court: Amtsgericht München HRB 210463  VAT Reg.No. DE294490635
Managing Directors: Andreas Bodczek, Joseph Lichtenberger, Armin Bauer, Guillaume Despagne

[A picture containing monitor, large    Description automatically generated]