endec - Encryption/Decryption Tool

A feature-rich encryption/decryption desktop application supporting Caesar Cipher and Vigenere Cipher with an intuitive GUI.

Overview

endec is a Python-based encryption tool that provides a user-friendly interface for encrypting and decrypting text using classical cipher methods. It features a modern, responsive GUI built with Tkinter and supports both Caesar Cipher and Vigenere Cipher algorithms.

Features

• Multiple Cipher Methods

  • Caesar Cipher: Shift-based character encryption (adjustable shift values)
  • Vigenere Cipher: Keyword-based polyalphabetic encryption (stronger security)

• User-Friendly GUI

  • Clean, intuitive interface built with Tkinter
  • Real-time cipher selection with dynamic field switching
  • Input/Output text areas with scrolling support
  • Status bar for operation feedback

• Practical Utilities

  • Encrypt/Decrypt toggle mode
  • Copy output to clipboard
  • Save encrypted/decrypted text to file
  • Clear all fields with one click
  • Input validation and error handling
  • Built-in usage examples

• Quality Code

  • Modular CipherHandler class for cipher logic
  • Type hints for better code clarity
  • Comprehensive error handling
  • Professional GUI layout with responsive grid system

Quick Start

1. Run the application:

   python encryption_tool-1.py

2. Select a cipher method (Caesar or Vigenere)

3. Choose your mode (Encrypt or Decrypt)

4. Enter your text and cipher parameters (shift number or keyword)

5. Click "Process" to transform your text

6. Copy or Save the output as needed

Usage Examples

• Caesar Cipher: Text "HELLO" with shift 3 → "KHOOR"
• Vigenere Cipher: Text "ATTACKATDAWN" with keyword "LEMON" → "LXFOPVEFRNHR"

Build as Executable

Convert to standalone EXE file:

pyinstaller --onefile --windowed encryption_tool-1.py