Comment on Is it completely impossible to do age verification without compromising privacy?
ilinamorato@lemmy.world 11 months agoThat could very well work, yes; but I think that would require Bob verifying Grace’s signature, and that would require trusting that Grace didn’t make a unique signature that she only used for Alice, and making a note of who verified it.
There might be a way to verify those signatures with public keys in a way that didn’t require Bob to tell Grace that he was verifying the signature, which is still rattling around in my brain.
Saledovil@sh.itjust.works 11 months ago
Bob would have to know and trust Grace beforehand. Grace could be the IRS, for example. The idea here being to have somebody who already knows your age vouch for your age.
ilinamorato@lemmy.world 11 months ago
That’s not about Bob trusting Grace specifically (that’s a premise of the entire operation), it’s about trusting that the letter Alice handed Bob was actually signed by Grace.
Saledovil@sh.itjust.works 11 months ago
Well, if Grace is already well known, then her public key should be available.
ilinamorato@lemmy.world 11 months ago
That…seems so obvious, now that you say it.