🖼️ Image Encryption Tool 🔒

Simple Image Encryption using Pixel Manipulation with Python & PIL

---

🚀 PRODIGY_CS_02

Image Encryption & Decryption Tool (CLI with PIL)

This project was developed as part of my internship at Prodigy InfoTech, under the role of Cyber Security Intern.
The task was to build a basic image encryption/decryption system using Python, utilizing the Pillow (PIL) and NumPy libraries.

---

✨ Features

• 🔐 Encrypts and decrypts images using a custom pixel manipulation technique
• 🖼️ Supports all standard image formats (JPG, PNG, etc.)
• 🔁 Adjustable encryption key (integer-based)
• 💡 Ensures pixel value wrapping with modular arithmetic
• 📂 Saves encrypted/decrypted images with descriptive filenames

---

🧠 How It Works

This tool manipulates the RGB pixel values of an image:

• Encryption: Adds the key value to each RGB pixel component and takes modulo 256
• Decryption: Subtracts the same key and applies modulo 256 again
• Works on any RGB image format and preserves image dimensions and quality

---

📌 Example

Original Image:        myphoto.jpg  
Encryption Key:        50  
Encrypted Output:      myphoto_encrypted.png  
Decrypted Output:      myphoto_decrypted.png