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Chrome Passcode

A small script for Debian/Ubuntu which allows user to set a password for Google Chrome to avoid unauthorized access. Prompts for password on browser startup.

Note: Chrome Passcode adds an extra protection for the browser. All the Google Chrome data is encrypted with gocryptfs.

Video

Installation

Run the following command in the terminal:

sudo bash install.sh

The main menu will appear which allows to manage Chrome Passcode script:

  1. Install Chrome Passcode
  2. Change the password which unlocks Google Chrome
  3. Uninstall Chrome Passcode and keep all the browser data
  4. Uninstall Chrome Passcode and loose browser data

img01

Algorithm

Browser Data Encryption

All the Google Chrome data (e.g. sessions, cookies, history, saved passwords etc.) is stored in the /home/$USER/.config/google-chrome/Default/ directory.

After Chrome Passcode installation is completed, all the browser data encrypts with your password and stores in the /home/$USER/.config/google-chrome/Default.encrypted/ directory.

After that the /home/$USER/.config/google-chrome/Default/ directory becomes empty.

Google Chrome startup

When Google Chrome starts, it prompts for a password.

Password correct:

  • The browser data decrypts and mounts to the /home/$USER/.config/google-chrome/Default/ directory. Decrypted directory will stay mounted until system reboot. So, you need to enter a password only at first Google Chrome startup.

  • While using Google Chrome, all the data encrypts back to the encrypted directory in real time. So, your encrypted browser data will be always up-to-date.

  • After system shutdown, the decrypted directory will be automatically unmounted. So, your browser data won't be accessible until you enter a password.

Password incorrect:

  • The browser data won't be decrypted and Google Chrome won't start.