On the Macintosh, there are several privacy tools you can use. While the Personal version of the Pretty Good Privacy, or PGP for short, (which is free but lacks disk encryption after the 30-day trial expires) is the easiest to use, there is another free, open source alternative. This alternative is a combination of FOSS tools.

While installation of these tools is straightforward, you will have to spend about an hour puzzling over the documentation to see how they all work together. Unlike Windows Privacy Tools (WinPT), there is no one unifying installer. As such, you are left trying to make all the pieces work together.

You will need to install 5 different tools on your computer. I recommend creating a new folder on your desktop, then copying the files to that folder.

As you might guess, figuring out how all these tools work together can be difficult. In reality, the process is much easier than one would think. The most difficult part of the process is actually setting up your public and private key. You may be forced to work at the command line. While there is help at the command line (just type “help” and press RETURN), you will have to read through the directions.

I have successfully encrypted emails and specific zipped files with the Mac privacy tools above, then unencrypted them with privacy tools on other platforms (e.g. WinPT on Windows or KGPG on Linux). This enables you to enjoy cross-platform security.

Software Tools:

  1. GPG Tools – http://www.tomsci.com/gpgtools/
    Graphical installer for
  2. Mac GNU Privacy Guard – http://macgpg.sourceforge.net/
    Includes most of the programs that you will need.

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