🔐 Caesar Cipher Encryption & Decryption Tool

A simple yet user-friendly GUI tool to encrypt and decrypt text using the classic Caesar Cipher algorithm.
Built with Python and customtkinter for a modern, clean interface.

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📜 What is the Caesar Cipher?

The Caesar Cipher is one of the oldest and simplest encryption techniques. It works by shifting each letter in your text by a fixed number of positions in the alphabet.
While it’s not secure for real-world use today, it’s perfect for understanding the basics of substitution ciphers and cryptography.

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✨ Features

• 🔑 Encrypt & Decrypt: Easily switch between encryption and decryption modes.
• 🎨 Modern GUI: Built using customtkinter with a stylish theme.
• 🔢 Custom Shift Key: Set your own shift value for flexible encryption.
• 🗂️ Custom Theme: Uses a nordic_theme.json file for a beautiful, modern style.
• 🔤 Custom Font: Uses Bitcount Grid Single Light Open for a clean appearance.

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🧩 How to Use

• 1️⃣ Enter your plaintext or ciphertext.
• 2️⃣ Enter the shift key.
• 3️⃣ Click Encrypt or Decrypt.
• 4️⃣ Copy or save the result as needed.

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🧑‍💻 Author

• Developed by Gowsik Raja.S
• 🎓 Cybersecurity Enthusiast

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