pyencfsgui is a Qt based GUI/wrapper around EncFS (encfs, encfsctl) and GoCryptFS (gocryptfs), mount and umount. It is written in python3, and relies on encfs/gocryptfs to be able to mount an enrypted folder. (These utilities typically rely on OSXFuse/MacFuse/...Fuse to provide a filesystem.)
In other words, pyencfsgui simply provides a GUI that uses the aformentioned utilities in the backend, and relies on the ability to launch these binaries, to interact with them and to capture & parse the output from those tools.
As a result, the EncFSGui source code is pretty easy to understand, as it does not contain any crypto or other black magic to do its job. The downside is that it is a wrapper and may break if tools start behaving in a different way.

pyencfsgui was developed on macOS using encfs versions 1.8.x and 1.9.x., and gocryptfs version 1.8.x

pyencfsgui was tested on recent version of macOS and Kali Linux

In order for pyencfsgui to be able to function, you need to install the following dependencies:

• python3 (3.9.x or higher)
• python3 libraries: PyQT5, pycrypto

Of course, as pyencfsgui relies on encfs and/or gocryptfs, those utilities need to be installed as well.

• encfs (1.9.x) and/or gocryptfs (1.8.x)

On macOS, you'll also need to install:

• Developer Command Line Tools
• OSXFuse/macFuse (depending on what encfs/gocryptfs needs)

Kali Linux already has most dependencies installed. If you're using a different distro, you may have to install some utilities as needed. (If you're using xfce as Desktop Manager, you may want to install & run something like plank to see application icons at the bottom of your screen)

It appears that the brew recipes for encfs and gocryptfs are currently disabled

Homebrew/discussions#1250 vgough/encfs#629 vgough/encfs#630

The homebrew-based procedure below used to work fine until a few days ago. If you prefer to use Homebrew, you'll have to wait until someone addresses the issues. If you already have encfs/gocryptfs installed and working, then you can skip those parts of the installation procedure below.

Of course, you can also try to install encfs via MacPorts. You may have to compile gocryptfs yourself.

If you'd like to use Homebrew:

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
sudo chown -R $(whoami) /usr/local/lib/pkgconfig
brew doctor

If you prefer to use MacPorts instead, check installation instructions at https://www.macports.org/install.php

Download the latest dmg installer image from https://osxfuse.github.io/ and run the installer.

If you're running a macOS version that doesn't have a working OSXFuse installer (yet), you can also try to install osxfuse using brew:

brew tap homebrew/cask
brew install --cask osxfuse

Next,

• Make sure to enable the kernel extension in System Preferences → Security & Privacy → General if/as requested
• Reboot for osxfuse to work correctly.

Note: on recent Mac devices (with M1 processor) running Big Sur or later, you may have to allow Kernel Extensions using the Startup Security Utility:

• Shutdown
• Press & hold Touch ID & power button. Boot into recovery mode
• Launch Startup Security Utility
• Allow third party "kernel extensions" by changing the "Security Policy" to "Reduced Security"

If you're using Homebrew:

brew update

Check if everything is ok and install encfs

brew doctor
brew install encfs

Check if encfs works:

encfs    

If you're using MacPorts:

sudo port selfupdate
sudo port install encfs

Check if encfs works:

encfs    

Homebrew:

brew update

Check if everything is ok and install encfs

brew doctor
brew install gocryptfs

Check if encfs works:

gocryptfs    

On a M1 Mac, check out this Github issue for instructions on how to compile gocryptfs: rfjakob/gocryptfs#556 (comment)

Homebrew:

brew install python3

(Make sure you're running a recent version of python3. Version 3.9.x or higher should work)

pip3 install --upgrade pip --user
python3 -m pip install PyQt5 --user

Note: On my 2020 MacBook Air (M1 processor), I had to install PyQT5 using the following command instead:

Homebrew:

brew install PyQt5

xcode-select --install

python3 -m pip install pycrypto --user --break-system-packages

If pycrypto is installed, but you are still getting the error *** Error importing Ramdom from Crypto *** then try this:

python3 -m pip uninstall pycrypto
python3 -m pip install pycryptodome --break-system-packages

Download & install the Jura font from here: https://fontsov.com/font/juraregular.html

On Kali Linux, python3, PyQT5 and pycrypto should already be installed.

sudo apt install fonts-jura

sudo apt install encfs

sudo apt install gocryptfs

• Clone the git project onto your machine

  git clone https://github.com/corelan/pyencfsgui.git
  

• Open a Terminal, go to the pyencfsguifolder
• run python3 encfsgui.py
• Check/edit the settings as needed. Make sure to verify the path of the various binaries (encfs, gocryptfs, mount)
• Create a new volume (or add an existing one to the application)
• Enjoy!

Sure! Simply follow these steps:

• Edit file pyencfsgui.sh and replace path_to_pyencfsgui_here (first line) with the full path to the folder where you have put the pyencfsgui repository
• Open a Terminal and go to the folder than contains the pyencfsgui repository
• Make the script executable:

  chmod +x pyencfsgui.sh
  

• Rename the script to pyencfsgui.app

  mv pyencfsgui.sh pyencfsgui.app
  

• Open Finder, go to the folder that contains the repository, and drag the .app file into your dock
• In Terminal, rename the file back to .sh

  mv pyencfsgui.app pyencfsgui.sh
  

• Open Finder, go to the folder that contains the repository, select the pyencfsgui.sh script, right-click and choose "Get Info"
• Make sure the script will open with "Terminal"

(it might be a good idea to also check/confirm that Terminal will close itself when the script exits)

Bonus: if you would like to use the encfsgui icon for the shortcut in Dock, follow these steps:

• Open "encfsgui.png" in the bitmaps folder
• Use Cmd+A to select the image, and then Cmd+C to copy it to clipboard
• Launch finder, open the folder that contains the pyencfsgui.sh script. Select the file, right-click and choose "Get Info"
• Select the icon in the upper left corner of the Info window. Then press Cmd+V to paste the image.

You're not supposed to use a single-tick (') or exclamation mark (!) in the password for new volumes. It may cause the 'expect' script to fail, and/or might end up setting a different password on the volume. If you insist on using a single-tick or exclamation mark, simply create the volume with encfs yourself, and then add the volume to the app (as opposed to creating it in the app itself)

GoCryptFS doesn't seem to support the ability to mount folders, specifying a custom volume name. As a result, the mounted volume will simply have the name of the folder it is mounted at. (Choose your folder names wisely!)

Some Linux Desktop Managers will not show the system tray icon when "hiding" pyencfsgui. This appears to be a PyQt5/Linux Desktop Manager compatibility issue.
On Linux I decided to "minimize" the GUI rather than "hide" it, as you may not be able to "unhide" it (due to lack of a system tray icon you can interact with).