PDF Password Adder

This application allows you to add AES-256 encryption to your PDF files for enhanced security.

Prerequisites

Ensure the following dependencies are installed:

1. Python 3: Required to run the script.
2. Dependencies:
   • python3-tk: For GUI-based functionalities (if applicable).
   • qpdf: For PDF processing.

Installation Instructions

Debian-based Distributions (Ubuntu, Linux Mint, etc.)

Run the following command to install the required packages:

sudo apt install python3-tk qpdf

Other Linux Distributions

Use the package manager for your Linux distribution to install the required dependencies. Examples:

• Fedora:

  sudo dnf install python3-tkinter qpdf

• Arch Linux:

  sudo pacman -S python-tk qpdf

macOS

Install the dependencies using Homebrew:

brew install python-tk qpdf

Windows

1. Download and install qpdf from its official releases page.
2. Add the qpdf binary directory to your system's PATH environment variable:
   • Right-click on "This PC" or "My Computer" > Properties > Advanced system settings > Environment Variables.
   • Locate the Path variable, click Edit, and add the directory where qpdf.exe is located.
3. Install the Python dependency using pip:

   pip install tk

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Usage

After installing the dependencies, execute the script using the following command:

python3 pdf_password_adder.py

Once the script runs successfully, a new AES-256 encrypted PDF file will be generated, original file will be unaffected.