Definition: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Input: A zero-knowledge proof or zero-knowledge protocol is a protocol used in cryptography .
Output:
In cryptography , a zero-knowledge proof or zero-knowledge protocol is a method by which one party ( the prover ) can prove to another party ( the verifier ) that they know a value " x " , without conveying any information apart from the fact that they know the value " x " .