PGP (Pretty Good Privacy) ver 2.1 - RSA public-key encryption freeware for MSDOS, protects E-mail. Lets you communicate securely with people you've never met, with no secure channels needed for prior exchange of keys. Well featured and fast! Excellent user documentation. PGP has sophisticated key management, an RSA/conventional hybrid encryption scheme, message digests for digital signatures, data compression before encryption, and good ergonomic design. Source code is free. Filenames: pgp21.zip (executable and manuals), pgp21src.zip (sources) Keywords: PGP, Pretty Good Privacy, RSA, public key, encryption, privacy, authentication, signatures, email