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ietf-wg-jose / json-web-proof

Specification work for JSON Web Proof
https://ietf-wg-jose.github.io/json-web-proof/
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Multiple Issuers #90

Closed SamuelSchlesinger closed 7 months ago

SamuelSchlesinger commented 11 months ago

Currently, the algorithms provided naturally have a single issuer for the underlying information we are proving statements about. However, in trying to add support for more general-purpose ZKPs (R1CS, for instance), I don't think this is general enough. In particular, here is a natural proposal for a 2-issuer proof in the context of verifiable credentials: "exists X. I have a birth certificate with social security number X, and a background check issued for citizen with social security number X". By forcing all of the information required by the verifier to be provided by a single "issued proof", we are undermining the privacy properties of the protocols which more general zero-knowledge proofs enable.

I propose we change the language in the web-proofs draft to allow for multiple "issued proofs". Because they are no longer 1-to-1 with proofs, I also propose to bikeshed the language here: Let's call them "issued facts" instead, or "provable facts".

dwaite commented 8 months ago

Related to #57

selfissued commented 8 months ago

I think it's even more closely related to #50.

selfissued commented 7 months ago

Closing since this is a duplicate of #50.