Download Gpg4win. Gpg4win enables users to securely transport emails and files with the help of encryption and digital signatures. Encryption protects the contents against an unwanted party. Gpg4win enables users to securely transport emails and files with the help of encryption and digital signatures. Encryption protects the contents against an unwanted party reading it.
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Several months ago I wrote a series on DIY email encryption. One of the steps in this process was installing Gnu Privacy Guard (GPG). This is the free, open-source program that actually manages the cryptographic functions of encrypting your emails. Fortunately, if you have GPG installed, you also have a powerful tool for encrypting files locally. Mac GPG file encryption is really simple to use and provides really strong protection for your data-at-rest.
Encrypting with Mac GPG File Encryption
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There are mulitple ways to encrypt a file with GPG, including using your private key. This post is going to focus on the simplest and easiest method: symmetric key encryption.
Step 1: Install GPG. The first step (if you don’t already have it) is to download and install GPG. If you run Linux you probably already have it built-in. If you use Windows, GPG4Win from https://www.gpg4win.org/. If you are on Mac, download the GPG Suite from https://gpgtools.org/.
Step 2: Open Terminal. GPG doesn’t come with a front-end. This means there is not graphical user interface (GUI). All functions are run from the Terminal. Again, if you are on Linux you are alreadly familiar with using Terminal. If you are a Mac user you may need some help opening the Terminal. Open Launchpad and click “Other”. Click “Terminal”. Launchpad will close and a Terminal window will open.
Step 3: Encrypt. Once the Terminal is open, enter the following command (NOTE: the file pathway in italics is my example. Replace this with the file that you wish to encrypt):
- gpg -c C:UsersadminDekstopexample file.pdf
Entering the file pathway can be simplified through the following procedure:
- Type “gpg -c “,
- The drag the file you want encrypted onto the Terminal window. The file pathway will automatically populate.
Next, press Enter. You will be prompted to enter a password twice. When you have entered the password, an encrypted copy of the file will be placed in the same folder as the original.
Decrypting With Mac GPG File Encryption
To decrypt a file protected by GPG, simply double-click the file. You will be prompted to enter your password. An unencrypted version of the file will be written to the same directory location as the encrypted version.
GPG offers extremely robust file encryption in an easy-to-use package. I also like that GPG is dual-use; if you’re running your own encrypted email, you already have it installed.
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About Gpg4win
Gpg4win (GNU Privacy Guard for Windows) isencryption software for files and emails.
What is Gpg4win?
Gpg4win enables users to securely transport emails and fileswith the help of encryption and digital signatures. Encryption protectsthe contents against an unwanted party reading it. Digital signaturesmake sure that it was not modified and comes from a specific sender.
Gpg4win supports both relevant cryptography standards,OpenPGP and S/MIME (X.509), and is the official GnuPGdistribution for Windows. It is maintained by the developers of GnuPG.Gpg4win and the software included with Gpg4winare FreeSoftware (Open Source; among other things free of charge forall commercial and non-commercial purposes).
Creation of Gpg4win was supported by the GermanFederal Office for Information Security (BSI).
Gpg4win Components
Gpg4win is an installer for Windows and contains severalFree Software components:
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- GnuPG
The backend; this is the actual encryption tool.
- Kleopatra
A certificate manager for OpenPGP and X.509 (S/MIME) and common crypto dialogs.
- GpgOL
A plugin for Microsoft Outlook 2010/2013/2016/2019 (email encryption). With Outlook 2010 and higher GpgpOL supports MS Exchange Server.
- GpgEX
A plugin for Microsoft Explorer (file encryption).
System Requirements
The system requirements are listedseperately.
Aim of Gpg4win Initiative
The Gpg4win initiative aims to provide a current Gpg4win Windows installationpackage including the GnuPG encryption tool and associated applications.The documentation ('Gpg4winCompendium') is maintained as part of the effort.
Both OpenPGP and S/MIME should be supported in a unified way.
Gpg4win is an international effort. Due to the origins of the initiativethere is a full German translation.Additional translators arewelcome!
A main achievement of Gpg4win is to focus on the builder,which allows to easily create updated installers.The builder runs best on a GNU/Linux system. Almost all software componentsare automatically cross-compiled for integration intothe installer. Thus Gpg4win does not depend on a singleperson to manually create the installer.
Short Study: Sustainable Free Software
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Before Gpg4win2 was developed,Jan-Oliver Wagner and Bernhard Reiter wrote a short studyabout 'SustainableFree Software: From project to permanent activity, using the exampleGpg4win'.
Features & Screenshots
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Read more about the features of Gpg4win.Get a first impression of Gpg4win from the screenshots.