[slwvx]

zero-knowledge proofs are a well-known tool in cryptography [1]. All Google is sharing is the library to implement it. Google would not have access to the information any more than they have access to the bank info of people who use Android or Gmail.

[1] https://en.wikipedia.org/wiki/Zero-knowledge_proof

[doginasuit]

It's my understanding that they are sharing the library but they will also be involved as a facilitator, at least to the extent that people use their identity wallet service. It also seems like they will have access to who you are sharing information with, which seems like the most valuable information for a company in their position, with nothing but a pinky promise that it will not be tracked. Let me know if any of that is inaccurate.

[beepbooptheory]

Here is a good explainer of an ideal implementation of this (maybe). If its this, you would be incorrect.

https://blog.vrypan.net/2026/06/29/260629-whats-wrong-with-e...

[_alternator_]

I don't know the technical details of this ZKP library, but there is no technical reason that I'm aware of that the ID provider would need to know who you are sharing with. Not to say Google didn't build it this way for business reasons.

[xinayder]

You also can't know if Google has broken any of the ZKP promises, or in terms of the field, if Google is cheating and uncovered the secret bits you shared.

[ForHackernews]

> any more than they have access to the bank info of people who use Android or Gmail.

...but they do? Google pay gives them your credit card and transaction details; any time your bank sends a statement to your gmail account, Google has that, too.

Am I missing your sarcasm?