Linuxnewbie.org: Installing GnuPG 1.0.1Mar 06, 2000, 18:20 (0 Talkback[s])
(Other stories by Hemi)
[ Thanks to Sensei for this link. ]
"GnuPG is a public key encryption program designed to replace PGP, which is encumbered with patented algorithms like RSA and IDEA. It is GPL'd and also conforms to the Open PGP standard. There are many different reasons to use encryption in everyday life but a couple major ones are how simple it is to intercept or "spoof" emails and the fact that an application like GnuPG can be used to sign a document or file, proving that it came from the person that signed it and that it hasn't been tampered with in transit."
"There's quite a bit of information on the concept of public key cryptography on the net, most written better than I could explain it so I won't go into more detail about the specifics of what it is and what it can be used for. Instead, let's move on to the installation and it's basic use."
"First we'll go to the GnuPG web site, www.gnupg.org, and download the source code for it...."