ZK (Zero‑Knowledge)
Security
Cryptography that proves facts without revealing data.
Zero‑knowledge proofs let one party prove knowledge or correctness without revealing underlying data. Systems like SNARKs and STARKs power privacy, scalability (rollups), and identity use cases. Implementations require careful performance and security tradeoffs.
Frequently asked questions
What’s the difference between SNARKs and STARKs?
SNARKs are succinct with short proofs but often require trusted setup; STARKs are transparent and post‑quantum friendly but have larger proofs.Where are ZK proofs used today?
Privacy, scaling (rollups), identity/credentials, verifiable computation, and private on‑chain actions.What are common pitfalls when using ZK?
Circuit bugs, incorrect constraint modeling, and proving costs. Use vetted libraries, test circuits thoroughly, and benchmark proving times.