No doubt many readers already have some experience with using implementations of OpenPGP, Pretty Good Privacy (PGP) or GNU Privacy Guard (GPG), to sign and verify ...
gpg-mailgate is a small content filter for Postfix + web interface that allows any user to upload PGP keys to your server (and confirm email address), and then will begin encrypting any outgoing mail ...
PGP, first released in 1991, uses a form of encryption known as public-key cryptography. This means that if you use PGP, you create two encryption "keys," which are basically big chunks of random ...
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