In today's world, communication has broken all previous time and distance limits. Now you can talk with someone in real-time no matter how far away he is. That advantage has also brought some major problems with itself. First, it is hard to verify other persons identity with 100% certainty and second, we can't know if there is a third party between who reads our correspondence. Fortunately for us something called public key cryptography was invented.
Learn how to work with GnuPG by reading this article by Sandro Mangovski in the Linux Gazette.
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- Software: GnuPG