What is difference between Bulletproof and zk-SNARK (of ZCash)? Any advantage?
Bulletproofs – Short zero-knowledge arguments of knowledge
61–63 of 63 posts
Re: Bulletproofs – Short zero-knowledge arguments of knowledge
#62Earlier quoted context omitted.
Just thought of another ZKP - my niece can prove to me that she knows the password to a device by logging in, without me ever knowing the password myself.
Technically speaking that's not a zero knowledge proof, because it requires what would be considered a trusted third party (the service being logged into). Ostensibly that service "knows" the password (or a functional substitute), and the prover is only proving password possession insofar as the third party service can be trusted. In your Where's Waldo example, this would be like having a non-playing third participan…
Isn’t this very similar to the classical magic word door example, assuming the password is stored as some hashed value?
E; not really
Re: Bulletproofs – Short zero-knowledge arguments of knowledge
#63Zero knowledge proofs are fascinating - as a non-mathematician, I particularly enjoy real-world examples. Two famous examples ("The Ali Baba Cave" and the "Two Balls and the Color Blind Friend") appear in the Wikipedia article on zero knowledge proofs [1]. My favorite, however, is this paper [2] on convincing another person you've found Waldo, without revealing his location and therefore ruining the game. It's extrao…
Thank you for this