 Witness-indistinguishable proof

Witness-indistinguishable proofs are a concept in cryptography and zero-knowledge proofs. They are a type of interactive proof where the validity of a statement can be proven without revealing any specific information about the witness (or secret) used to prove the statement. ### Key Characteristics of Witness-Indistinguishable Proofs: 1. **Witness**: In the context of proofs, a witness is typically a solution or secret information that helps validate a statement.