Encryption App

Introduction

A desktop GUI application built with Python and Tkinter to encrypt text messages from .txt files. It is designed for simple, local use. Select a text file, enter a password, and generate an encrypted output file in the same directory.

Features

• Desktop interface (Tkinter) with file upload button and password input.
• Encrypts message content from .txt files.
• Supports multi-line text files.
• Preserves non-alphabetic characters during one encryption stage.
• Outputs encrypted result to a new file with the - encrypted.txt suffix.
• Shows encryption status in the app window.

Requirements

• Python 3.8 or newer (recommended)
• numpy

Installation

1. Open your terminal.
2. Clone the repository:

git clone https://github.com/fikrinotes/Encryption-App.git

3. Move into the project directory:

cd encryption-app

4. Install dependencies:

pip install -r requirements.txt

How To Use

1. Prepare a .txt file that contains the message you want to encrypt. Example: example-text.txt
2. Run the application:

python main.py

3. In the app window, click the upload icon/button on the left panel.
4. Select your .txt file.
5. Enter a password in the right panel. Use letters only (no spaces, numbers, or symbols).
6. Click Encrypt.
7. If successful, the app shows an OK status message.
8. Check the same directory as your source file for the output file. The output filename format is:

<original-file-path>/encrypted.txt

For example, if your file is D:/file/example-text.txt, the encrypted output will be:

D:/file/example-text-encrypted.txt

Notes

• This project currently supports text files (.txt) only.
• The app writes the encrypted result as a new file and does not overwrite your original input file.