PGP (Pretty Good Privacy) is a public key encryption pack- age to protect E-mail and data files. It lets you commu- nicate securely with people you've never met, with no secure channels needed for prior exchange of keys. It's well featured and fast, with sophisticated key management, digital signatures, data compression, and good ergonomic design. Contributors: Matthias Bruestle for the myetsid feature. Lutz Donnerhacke for the pgp2.6.3in development. Ingmar Camphausen, Thomas Roessler, a.o. for extensive testing.