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One key you share with the world (a ``public key''). Just like in the metaphor, GnuPG uses two keys. This is a simplification of how encryption works, but all in all it's reasonably accurate. You then reach inside and get the message your friend left. Later on, you visit the box and unlock it with your own key. If a friend wants to leave you a message, they put their message in the box and lock it using the key you gave them. The locking key you give to the world, and the opening key you keep for yourself. One keyhole is used to lock the box the other key is used to open it. Imagine that you have a box with two separate keyholes and two separate keys. How GnuPG Works Please read this section carefully. Once you have GnuPG 1.2.1 installed, we can get this show on the road. Source downloads and binary packages for many operating systems are available from there. If your distro doesn't have a GnuPG 1.2.1 package, then try checking out the main GnuPG website at.

As of this writing, the most recent version of GnuPG is 1.2.1, and that's the version this HOWTO will cover.

#Gnu privacy guard gpg update

Even if GnuPG came with your distro, though, please check and see if an update is available. Your distro probably included GnuPG as of this writing it's a standard part of Red Hat, Mandrake, Debian, Slackware, SuSE, FreeBSD and more. While nothing I'm telling you is a lie, there are a lot of places where I'm not going to be telling the whole truth.

Most people aren't very comfortable with mathematics, though, and so I'm going to simplify things so that they can be explained in plain English. This is because cryptography is a branch of mathematics. It's very hard to speak accurately about cryptography without using sophisticated math.

#Gnu privacy guard gpg how to

We'll also cover how to share your keys with other people, how to get keys from Internet key databases, and how to use Codebook, a quick and simple app that I wrote to make GnuPG use easier. We'll start from scratch we'll create a set of cryptographic keys and then we'll start using our keys with Evolution and KMail. This HOWTO will teach you how to start working with the GNU Privacy Guard-a complete implementation of OpenPGP. The IETF standard governing PGP is RFC2440, also called 'OpenPGP'. Both of these have undergone IETF standardization processes, and as a result anyone can create their own implementation of either. Today things have stabilized to the point where there are only two major competing email encryption standards: PGP and S/MIME. Several people came up with different email encryption standards, from Mark Riordan's Privacy-Enhanced Mail (PEM) to Phil Zimmermann's Pretty Good Privacy (PGP) to RSA Data Security, Inc.'s corporate offerings to. You'd send this nonsense to your recipient, who would decrypt it and recover the original message.

#Gnu privacy guard gpg software

Using cryptography-the science of codes and ciphers-they developed software which would transform data into gobbledygook. In the early 1990s, a few people decided they didn't like this state of affairs. But what it boils down to is when you send an email, you don't know who's going to read it. At any link in this chain, your email can be read-perhaps by an unscrupulous sysadmin who satisfies his delusions of grandeur by peeking into people's private lives, or by an FBI investigation that's hoovering up all emails that pass through a site suspected of being used for criminal activity, or. From there it gets handed off to another computer system, and another, and another, until somehow it gets to the intended recipient. When you send an email off into the world, it gets handed off to a computer system whose administrators you probably don't know. Unfortunately, it's not a very private medium. It's quick, convenient, and you can check it anywhere in the world you've got a computer and a Net connection. Introduction The dangers of emailДЄlmost all of us in the online world use email daily. If you find any errors, please email me at cortana at. Nothing in this document is deliberately false, but I make no claim of it being completely technically correct.

#Gnu privacy guard gpg license

A copy of the license may be found at GNU's site.

#Gnu privacy guard gpg free

Permission is granted to copy, distribute and/or modify this document under terms of the GNU Free Documentation License, version 1.2 or any later version published by the Free Software Foundation with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. HOWTO: Use the GNU Privacy Guard HOWTO: Use the GNU Privacy Guard