What is pretty good privacy

Answer 1

Pretty Good Privacy (PGP) is a data encryption and decryption computer program that provides cryptographic privacy and authentication for data communication. It is often used for secure email communication and file encryption. PGP uses a combination of symmetric-key cryptography and public-key cryptography to provide privacy and authentication. It was developed by Phil Zimmermann in 1991 and has become a widely used encryption tool for protecting sensitive data.