🔐 Post-Quantum Cryptography Flask App (Kyber512)

This project demonstrates secure encryption and decryption using Post-Quantum Cryptography (PQC) through a Flask web application. It uses Kyber512 (ML-KEM), a NIST finalist algorithm, along with AES-GCM for message encryption via a hybrid cryptosystem.

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🚀 Features

• 🔑 Key generation using Kyber512 (ML-KEM)
• 🧾 Message encryption using AES-GCM with a Kyber-derived shared secret
• 🔓 Decryption to retrieve the original message
• 🖥️ Clean Bootstrap 5 web interface
• 🛡️ Secure headers via Flask-Talisman
• 🧪 Minimal, readable codebase with simple logic

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🛠 Technologies Used

Component	Tech
Backend	Python 3, Flask
PQC Library	kyber_py
Symmetric Enc	AES-GCM (from cryptography)
Frontend	HTML, Bootstrap 5
Security	Flask-Talisman, .env

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📁 Project Structure

pqc-flask-app/
├── app/
│ ├── init.py
│ ├── routes.py
│ ├── pqc.py
│ ├── templates/
│     ├── index.html
│ ├── static/
│     ├── bootstrap.min.css
├── requirements.txt
├── run.py
├── README.md

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⚙️ Setup Instructions

1. Clone the repo

git clone https://github.com/MQasimJalil/pqc-flask-app.git
cd pqc-flask-app

### 2. Install dependencies
pip install -r requirements.txt

### 3. Run the app
python run.py

### 4. Open web app
Go to your browser and visit http://localhost:5000