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This doesn't seem like a zero knowledge proof to me. It seems like, for this to work, you have to have a prover, a validator and a 3rd party. By revealing the a

This doesn't seem like a zero knowledge proof to me. It seems like, for this to work, you have to have a prover, a validator and a 3rd party. By revealing the authentication to the validator, you are providing them information. I know where something is on the grid, check these coordinates, and if it's there, give me a yellow hat...that is easy. If I see you have a yellow hat, I know that you know where the thing is. If I could prove that without disclosing the actual coordinates, that seems more zero knowledge to me. An example might be if you overlay a layer on the infinite plane, blacked out all, on the transparent layer, save a one by one square, and aligned it to the spot that had the easy emoji. Thereby, I prove to you I know where the easy emoji is, without giving any info regarding where it sits in the plane. However, this isn't my field - just my thoughts.

mattdesl 5y ago
The demo does not disclose any coordinates—only verifies a proof that you know the coordinates. Not even the demo knows the coordinates of a valid proof that you submit (check the source - there are no coordinates present).
- relaunched 5y ago
  I'm not sure why that matters. By inputting coordinates, you have giving extra information. There is a difference between verifying that someone knows the coordinates and sharing the actual coordinates. This particular system seems to function like an IDP. Where, upon authentication and token is issued, and the 3rd party checks the token's validity. I'm not sure that is the same as zero-knowledge.
  - mattdesl 5y ago
    The project can be downloaded and run locally (it is a static client side website, no server) and the proof generation and verification can be run offline, without the coordinates ever being sent over the network. Only the proof file needs to be sent between the two parties. I suppose the system itself acts as a “third party” but at no stage does it require you to share the coordinates with one another, hence zero knowledge. :) Does that make sense?

mattdesl 5y ago

The demo does not disclose any coordinates—only verifies a proof that you know the coordinates. Not even the demo knows the coordinates of a valid proof that you submit (check the source - there are no coordinates present).

relaunched 5y ago
I'm not sure why that matters. By inputting coordinates, you have giving extra information. There is a difference between verifying that someone knows the coordinates and sharing the actual coordinates. This particular system seems to function like an IDP. Where, upon authentication and token is issued, and the 3rd party checks the token's validity. I'm not sure that is the same as zero-knowledge.
- mattdesl 5y ago
  The project can be downloaded and run locally (it is a static client side website, no server) and the proof generation and verification can be run offline, without the coordinates ever being sent over the network. Only the proof file needs to be sent between the two parties. I suppose the system itself acts as a “third party” but at no stage does it require you to share the coordinates with one another, hence zero knowledge. :) Does that make sense?