What is PGP?

What is PGP?

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Pretty Good Privacy (PGP) is an encryption method that uses public-key encryption to encrypt and digitally sign e-mail messages during communication between e-mail clients. Public key encryption is an asymmetric scheme that uses a pair of keys for encryption: the public key encrypts data, and a corresponding secret key (private key) decrypts the data. For digital signatures, the process is reversed: the sender uses the secret key (private key) to create a unique electronic number that can be read by anyone who possesses the corresponding public key, which verifies that the message is truly from the sender. PGP is effective, easy to use, and free. Therefore, it is one of the most common ways to protect messages on the Internet.

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