Deep Dive into Zero-Knowledge Proofs (ZKPs) with Examples
Introduction Zero-Knowledge Proofs (ZKPs) are a fascinating cryptographic technique that allows one party (the prover) to convince another party (the verifier) that a statement is true without revealing any additional information . This guide takes you deep into the world of ZKPs with real-world analogies, use cases in Web3, and practical code examples. 1. What is a Zero-Knowledge Proof? Concept: ZKPs allow someone to prove they know something without revealing the actual information. For example, you can prove you know a password without disclosing the password itself. Example: Imagine you want to prove that you know the password to your email. A ZKP lets you do this without revealing the password, ensuring security and privacy. 2. Key Properties of ZKPs Completeness: If the statement is true, an honest verifier will be convinced. Soundness: If the statement is false, a dishonest prover cannot convince the verifier (except with negligible probability). Zero-Knowledge: No kn...