🔐 Web-Based Text Encryption Tool

A Flask-based web application that allows users to encrypt and decrypt text using multiple algorithms, including Caesar Cipher, AES, and base64. The app provides a simple and secure interface for testing encryption techniques.

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🚀 Features

• Encrypt and decrypt plain text using selected algorithms.
• Supports Caesar Cipher, AES, and base64.
• Option to copy ciphertext easily.
• Basic input validation (no empty inputs, must select algorithm).
• Built with a responsive UI for easy use.
• Secure message handling using Flask backend.

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🧩 Tech Stack

Frontend: HTML, CSS, JavaScript Backend: Python (Flask) Database: SQLite (Flask SQLAlchemy) Encryption Library: PyCryptodome

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⚙️ Installation & Setup

1. Clone the Repository

git clone https://github.com/yourusername/web-encryption-tool.git
cd web-encryption-tool

2. Create a Virtual Environment

python -m venv .venv

3. Activate the Environment

• Windows

  .venv\Scripts\activate

• Mac/Linux

  source .venv/bin/activate

4. Install Dependencies

pip install -r requirements.txt

5. Run the Application

python backend/app.py

Then open your browser and visit:

http://127.0.0.1:5000

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🔒 Encryption Algorithms Implemented

Algorithm	Description	Supports Decryption
Caesar Cipher	Shifts each character by a fixed key	✅ Yes
AES (Advanced Encryption Standard)	Symmetric encryption using a secret key	✅ Yes
base64	Encodes text to ASCII format	✅ Yes

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🧑‍💻 Author

Muhammad Marij Younas 📍 Lahore, Pakistan 📧 marijhashmi777@gmail.com 🔗 LinkedIn 🔗 GitHub