 Feige–Fiat–Shamir identification scheme

In cryptography, the Feige–Fiat–Shamir identification scheme is a type of parallel zero-knowledge proof developed by Uriel Feige, Amos Fiat, and Adi Shamir in 1988.Like all zero-knowledge proofs, it allows one party, Peggy, to prove to another party, Victor, that she possesses secret information without revealing to Victor what that secret information is.