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It does sounds like that the author is not aware of existence of zero knowledge range proofs for identity based authetification (anonymous credentials). In esse
by JanisErdmanis 2y ago
It does sounds like that the author is not aware of existence of zero knowledge range proofs for identity based authetification (anonymous credentials). In essence they work as follows: a third party vouches a commitment for your birth year into a commitment with a signature. This then can be used for to be shown to a service provider along with a range proof to ensure that the age limit gets respected. That way service provider does not learn your year while can ensure that all members respect some required age limit.
- Aloisius 2y ago> a third party vouches If the only porn requires this, then the third party has a record of every single person who wants to view porn.
- JanisErdmanis 2y agoThe third party vouches commitments with their year of birth for all individuals. The secret opening can be distributed to citizens with their identity card. Also multiple properties can be signed at the same time like location coordinates that can be used for other purposes and hence not making vouching exclusive to age verification.
- rs186 2y agoHow does that third party know my birth year? And the precision of one year is way too low.
- tzs 2y agoI don't know about the specific systems he is thinking of but I think the general approach is to use a third party that already knows that.
- hellojesus 2y agoWhat prevents 1. Me from sharing my credentials with everyone by publicly publishing them. 2. The third party from connecting with any service providers requiring verification to share info?