Secure Communication with GnuPG on Linux
This document discusses GnuPG, which is a tool for secure communication and data storage. It can be used to encrypt data and to create digital signatures. GnuPG is a complete and free replacement for PGP.
Discover How To Strengthen My Privacy HOWTOs
Conventional Public Key Infrastructure
This is a great document that explains public key infrastructure, X.509 and certificates, and the problems with existing methods.
Clear Text Communication - Slaying the Beast
In this document, several aspects of implementing a secure shell system with OpenSSH are discussed.
