PGP (Pretty Good Privacy) A public key encryption program based on the RSA algorithm. Devel- oped by Phil Zimmerman as freeware, PGP is also available in commercial versions. PGP was under a cloud for some time because there was concern that it was so powerful as to violate U.S. technology export laws. Note: Encryption technology technically is classified under U.S. law as a form of munitions. See also encryption, freeware, public key encryption, and RSA. |