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  • Results 1 to 6 of 6

    Thread: How to Install PGP Encryption

    1. #1
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      How to Install PGP Encryption

      PGP 6.5.8
      Pretty Good Privacy
      Downloading, Installing, Setting Up, and Using this Encryption Software


      A Tutorial for Beginners to PGP

      University of Pittsburgh at Johnstown, Johnstown, PA, USA


      Introduction: A word about PGP
      Encryption is the process whereby codes are used to attempt to conceal the meaning of a message.PGP (Pretty Good Privacy) is a digital data encryption program created by Phil Zimmermann, a special director of Computer Professionals for Social Responsibility (CPSR) from 1997-2000. He created PGP to promote awareness of the privacy issue in a digital age. Protecting one's privacy is nothing new. It has, however, become more urgent today because of the ease with which digital data (information in databases, e-mail, and so forth) can be accessed, intercepted and monitored. It is also not unusual for sensitive information, transmitted or stored in digital form, to accidentally become public knowledge. Once data is in digital form, it's a bit like a greased pig. You can get your hands on it, but you can't hold onto it because digital data is so easily duplicated and shared. This is why more and more organizations are looking to encrypt all their information.



      Private individuals should think seriously about doing the same thing. The fact that you're reading this tutorial indicates that you agree.A little paranoia is not a bad thing; it makes sense to take whatever means are available and within reason to protect yourself from people prying into your private affairs.

      A word of warning to beginners to encryption. The PGP program, notwithstanding its user-friendly graphical user interface, may take some getting used to here and there. At the USENIX Security Symposium in 1999, Alma Whitten & J. Tygar published a paper entitled "Why Johnny Can't encrypt" in which they point out some of the usability problems associated with the software. The paper is available at www.sims.berkeley.edu/~alma
      With this in mind, our tutorial aims to help you get over the initial hurdles at least so you can be up and running using the software without much difficulty. The features of PGP introduced in this tutorial are all you need to know to use the program to protect your privacy in the normal run of affairs. But bear in mind that to become a power user of PGP--one who takes advantage of the full suite of encryption protections--you will need to invest some time in reading the Manual that accompanies the program. The Manuals for each version of PGP can be downloaded from the PGP International web site at http://www.pgpi.org/doc/guide/.


      Step by Step instructions: http://www.pitt.edu/~poole/PGP.htm

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      Installing and configuring PGP in Windows


      Today I installed Windows 7 and Office 2007, and configured Outlook. Then I looked for the most suitable GnuPG plugin for Outlook.

      There are several, and I failed to install the best option due to missing components in my Windows install (it was built for Office 2005).

      However, I did succeed in installing the command-line GnuPG tools, and also a shell extension which allows you to easily de/encrypt and sign files directly from the Windows Explorer right-click menu. This means you can secure files on your PC before sending them. I think this might in some ways be preferable to having email encryption only.

      I'm writing this to document the install process. I disabled UAC (User Account Control) on Windows 7, so you might get additional security warnings. If you use UAC, remember to start Command Prompt when needed by selecting All Programs->Accessories->right-click on Command Prompt and select "Run as Administrator"; and similarly when running programs from the Windows Explorer.

      First, download GnuPG by following the FTP link on this page. When I looked, the page looked like this (you want the FTP link beside GnuPG 1.4.10b compiled for Microsoft Windows.):

      The file is called gnupg-w32cli-1.4.10b.exe. Save it and run it, or just run it.

      You'll get a security warning. Click through it:

      You can safely disable the install options:

      The install creates a new directory under "Program Files", and you need to add this directory to your path. Right-click on "My Computer" and open "Properties", then select the "Advanced" tab:

      Click "Environment Variables" and scroll in the "System variables" pane until you see "Path":

      In the System pane, select "Path" then click Edit...

      Move the text cursor to the end of the Variable value and append the following:
      ;C:\Program Files\GNU\GnuPG\
      including the leading semi-colon and the trailing backslash. Hit the three "Ok" buttons to exit System Properties and you're done.

      Next you need to generate your key for signing and encryption.

      Open a Command Prompt and follow the procedure outlined in the GnuPG documentation at http://www.dewinter.com/gnupg_howto/...o-3.html#ss3.1 which looks like this:

      In the command prompt, type the following command:
      gpg --gen-key
      and follow the key generation procedure, as I did in the following (note I was not in "My Documents" directory, that doesn't matter):

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      At this point you should export and backup a copy of your public and private key files, and make sure you won't forget your passphrase, or everything you have encrypted will be gone forever. To export your public key, change to your documents directory and type this command (but use your name, of course):
      gpg -a --export -o clifford.heath.pubkey
      This is the file you must send to your friends so they can encrypt email that only you can read. It's a plain-text file, so you cam safely view it in Notepad and paste it into the text of an email. The one I just generated looks like this (this is not my real one, just a test):

      When I receive your public key file, I will import it into my public keyring using this command:
      gpg --import ken.evans.pubkey
      That completes the setup of GnuPG. Next you should install the Windows Shell extension GPGee. You can download it from http://gpgee.excelcia.org (follow the download link). The page looked like this:

      Save the ZIP file and view it in the Windows Explorer:

      Windows will warn, but you can open it up to find the installer program:

      Double click to run that. Since you're viewing the ZIP file, you'll get a warning you can ignore:



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      Click through the installer screens to the end:

      Now, you can right-click on any file or directory in Windows Explorer, and you'll see a new option, GPGee:

      You need to tell GPGee where everything is, so select Configure. The next screen shows my configuration (for the Administrator account):

      Now, when you right-click a file or directory and select Sign, you'll see a screen like this (after choosing a signing key):

      Hitting ok asks for your passphrase:

      and now you have a signed copy of the original file.

      If you had selected Encrypt as well, you'd have to select the public keys of the people you want to allow to decrypt the file, but otherwise the process is the same. Note that I selected "Text output", which means that the signed&encrypted text is encoded in ASCII so it looks similar to the public key I showed earlier. This file can easily be attached or pasted into any email message.

      A similar procedure allows you to decrypt files you receive from others. GPGee will again ask for your passphrase, so it can unlock your private key.

      When you receive a PGP encryption key from a friend, you can save this email (as text) to a file whose name ends in .asc, and then you can use GPGee to verify the signature. It looks like this:

      That completes the installation procedure. Enjoy!

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