Update README.md

Signed-off-by: Aakash G <[email protected]>

Author: Aakash02A

Image Encryption/README.md

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+# XOR Image Encryption/Decryption Tool 🔐🖼️
+
+A simple Python-based tool to encrypt or decrypt image files using XOR bitwise operation. This is useful for understanding basic cryptographic principles, specifically symmetric encryption using XOR.
+
+---
+
+## 📌 How It Works
+
+This tool reads an image file as raw binary data (`bytearray`), applies the XOR operation on each byte using a user-defined key (0–255), and saves the encrypted/decrypted result.
+
+Since XOR is symmetric:
+> **(Encrypted Data ⊕ Key = Original Data)**  
+> **(Original Data ⊕ Key = Encrypted Data)**
+
+Running the tool again with the same key will decrypt the image.
+
+---
+
+## 🧰 Features
+
+- XOR-based symmetric encryption and decryption.
+- Works with any binary file (JPG, PNG, etc.).
+- Minimal and beginner-friendly.
+- CLI-based tool, portable and no external dependencies.
+
+---
+
+## 📁 Folder Structure
+
+```
+XOR_Image_Encryptor/
+│
+├── xor_image_encryptor.py     # Main Python script
+└── README.md                  # Documentation
+```
+
+---
+
+## ▶️ Usage
+
+### 1. **Run the Script**
+
+```bash
+python xor_image_encryptor.py
+```
+
+### 2. **Follow the Prompts**
+
+```text
+Image Encryption/Decryption Tool
+Enter image path: input.jpg
+Enter output file path: output.jpg
+Enter a secret key (0-255): 123
+```
+
+The output image will be saved to the specified path.
+
+---
+
+## 🧪 Example
+
+```bash
+# Encrypt
+Enter image path: secret.jpg
+Enter output file path: encrypted.jpg
+Enter a secret key (0-255): 77
+
+# Decrypt
+Enter image path: encrypted.jpg
+Enter output file path: decrypted.jpg
+Enter a secret key (0-255): 77
+```
+
+`decrypted.jpg` should be visually identical to `secret.jpg`.
+
+---
+
+## ⚠️ Notes
+
+- Key must be an integer between `0` and `255`.  
+- Both encryption and decryption use the **same function**.
+- Ensure file paths are valid and accessible.
+
+---
+
+## 📚 Concepts Used
+
+- **Byte-level file handling**
+- **XOR (`^`) operation**
+- **Symmetric encryption logic**
+- **Error handling with `try-except`**
+
+---
+
+## 🔐 Educational Use Only
+
+This tool is **not secure for real-world encryption**. XOR with a single key is trivially breakable. It's intended for **educational** use only to understand basic encryption.
+
+---
+
+# Build by AAKASH