RE: selective disclosure without ZKP

From: Kim Hamilton
To: Nikos Fotiou
Subject: Re: selective disclosure without ZKP

> I think the redaction signature suite is a lot like what you describe: https://w3c-ccg.github.io/lds-redaction2016/

> It's kind of fallen by the wayside, but many of us are interested in the simplicity of this approach, so if you're interested, we may be able to drum up interest.

This was exactly what I was  looking for!

>  At the same time -- and I've only quickly read the BBS+ spec -- but it sounds like they may be doing something very similar: https://w3c-ccg.github.io/ldp-bbs2020/

I will check that!

Thanks,
Nikos




On Wed, Jun 10, 2020 at 4:39 PM Nikos Fotiou <fotiou@aueb.gr> wrote:
 
Hi,
We were thinking about VCs that support selective disclosure of claims without ZKP (we do not care about unlikability). A trivial approach that came up is the following: the issuer organizes all claims in a Merkle tree, includes the root of the Merkle tree (only) in the VC, and sends the VC and the tree to the holder. Then, the holder can include the VC and the corresponding Merkle membership proof in the verifiable representation.
 
Does this sound reasonable?
 
Best,
Nikos