techhub.social is one of the many independent Mastodon servers you can use to participate in the fediverse.
A hub primarily for passionate technologists, but everyone is welcome

Administered by:

Server stats:

4.7K
active users

#verifiablecredentials

0 posts0 participants0 posts today

> [Verifiable Credentials] allow for selective disclosure of information. For example, instead of handing over your entire driver’s license at a bar (which has a picture of you, your address, etc.), you can selectively disclose that you are of drinking age.

medium.com/@dfinity/introducin

Medium · Introducing Verifiable Credentials to the Internet ComputerBy DFINITY

At our recent AC meeting in Hiroshima, Japan 🇯🇵, Leonard Rosenthol, of Adobe, introduced the work of the Coalition for Content Provenance and Authenticity (C2PA).

The C2PA work leverages W3C standards and aims to develop technical specs for widespread content provenance and authenticity, allowing users to trace media origins. #VerifiableCredentials, #WebAnnotations,

🎬 Watch the video: youtu.be/tQDTvzjr5CQ

Data Integrity BBS Cryptosuites v1.0 has just been published as a #w3c Candidate Recommendation #timetoimplement !

▶️ w3.org/TR/2024/CR-vc-di-bbs-20

This specification describes how to generate digital #signatures for ensuring the authenticity and integrity of #VerifiableCredentials using the BBS signature scheme (👀 BBS is the acronym of its creators: Boneh, Boyen and Shacham).

See also the "BBS Cryptosuite v2023 Explainer": github.com/w3c/vc-di-bbs/blob/

www.w3.orgData Integrity BBS Cryptosuites v1.0This specification describes a Data Integrity Cryptosuite for use when generating digital signatures using the BBS signature scheme. The Signature Suite utilizes BBS signatures to provide selective disclosure and unlinkable derived proofs.
Continued thread

1️⃣ Verifiable Credential Data Integrity 1.0 describes mechanisms for ensuring the authenticity and integrity of #VerifiableCredentials and similar types of constrained digital documents using #cryptography
w3.org/TR/vc-data-integrity/
Check out the explainer! github.com/w3c/vc-data-integri

2️⃣ The Verifiable Credentials JSON Schema specification provides a mechanism for the use of #JSON Schemas with VCs through a standardized mechanism called "Credential Schemas"
w3.org/TR/vc-json-schema/

www.w3.orgVerifiable Credential Data Integrity 1.0This specification describes mechanisms for ensuring the authenticity and integrity of verifiable credentials and similar types of constrained digital documents using cryptography, especially through the use of digital signatures and related mathematical proofs.
Continued thread

Despite this wariness, the whitepaper makes good arguments, especially in the "issuer-always-up" approach as needed by Bit Strings. I worry about the effective loss of a persistent VC by the holder if an issuer disappears which the EBSI helps protect against. This worry about "issuer-always-up" is assuming the lack of an explicit revocation status is effectively a revocation.

2/n
#verifiablecredentials

I did read EBSI VC revocation report (ec.europa.eu/digital-building-) and was also, in parallel, turned on to Bit Strings as a method of handling revocations.

w3c.github.io/vc-bitstring-sta .

Unfortunately, I don't have enough background on the European Blockchain Service Infrastructure (EBSI) to form an opinion on it independent of VCs but I am always reticent that folks will conflate VCs and blockchains so anytime VC mechanisms tie into blockchains I am always a bit wary.

1/n
#verifiablecredentials

ec.europa.euEBSI Presents on New Study about Verifiable Credential Revocation - EBSI -

Ugh, I heard whispers of this being the case but it's now confirmed: California's mDL requires use of a standalone app 😡 dmv.ca.gov/portal/ca-dmv-walle

The issue with standalone apps is that you have to unlock your phone before pulling up the app to then hand to someone like, say, law enforcement who love it when you willingly enable them to clone your device if they decide to confiscate it.

Personally I'd rather they have supported adding it to Apple Wallet (and Google's equivalent, it's all implementing a standard spec afaik.) Maybe next year? 😣

California DMVCA DMV Wallet & mDL Pilot - California DMVThe CA DMV Wallet app holds your mobile driver’s license (mDL) - a free, digital, secure, and convenient version of your California DL/ID.