PGP: History, Functionality, and Encryption Techniques, Exercises of Cryptography and System Security

Download PGP: History, Functionality, and Encryption Techniques and more Exercises Cryptography and System Security in PDF only on Docsity! is a computer program that provides cryptographic privacy and authentication. It was originally created by Philip Zimmermann in 1991. While originally used primarily for encrypting the contents of email messages and attachments from a desktop client, PGP encryption uses public-key cryptography and includes a system which binds the public keys to user identities. PGP message encryption uses both asymmetric key encryption and symmetric key encryption algorithms. When encrypting a message, the sender uses the public key half of the recipient's linked key pair to encrypt a session key. That session key is used, in turn, to encrypt the plaintext of the message using symmetric key encyption. docsity.com