- From: Manu Sporny <msporny@digitalbazaar.com>
- Date: Tue, 25 Oct 2022 10:45:22 -0400
- To: W3C Credentials CG <public-credentials@w3.org>
- Cc: "John, Anil" <anil.john@hq.dhs.gov>, Steve Capell <steve.capell@gmail.com>
On Tue, Oct 25, 2022 at 8:46 AM Steve Capell <steve.capell@gmail.com> wrote: > Yes me too - keen to understand how the same credential can have multiple proof methods - especially when one of them is selective disclosure VC Data Integrity supports proof sets, so you can attach multiple proofs to a single VC and then, with the aid of the wallet, the Holder can choose how they'd like to interact (selective disclosure, full credential, post-quantum signature, etc). Proof sets are multiple INDEPENDENT digital proofs on the same data, thus if you have 4 of them, wallet software need only deliver the one type of proof that a verifier is requesting. Clearly, the Holder isn't going to be asked "Do you want to use a post-quantum cryptographic signature for this interaction?"... but they might be asked: "The Bank of Utopia only wants to know your '123456' postal code, do you want to send it to them?" or "The Bank of Utopia is requesting a complete copy of your Citizenship Card, do you want to send it to them?". More on proof sets here: https://w3c.github.io/vc-data-integrity/#proof-sets -- manu -- Manu Sporny - https://www.linkedin.com/in/manusporny/ Founder/CEO - Digital Bazaar, Inc. News: Digital Bazaar Announces New Case Studies (2021) https://www.digitalbazaar.com/
Received on Tuesday, 25 October 2022 14:46:13 UTC