🔐 Secure File Transfer App

This is a Flask-based web app that lets users securely upload, encrypt, decrypt, and download files using AES encryption (via cryptography.Fernet). Includes user login, logging, and Ngrok support for secure remote access.

🚀 Features

• 🔒 AES-256 file encryption using Fernet
• 🗂️ Upload and download via web interface
• 🧩 Simple login system (Flask session)
• 🧾 Logging for audit trail (app.log)
• 🌐 Ngrok support for public HTTPS access
• ✅ Decryption available only after login

🛠 Tech Stack

• Python 3 / Flask
• Cryptography (Fernet)
• HTML + Jinja2 templates
• Flask-Session
• Ngrok (for public access)

🔐 Default Credentials

Username	Password
admin	password123

📷 Screenshots

Include screenshots of:

• Login page
• Upload form
• Encrypted files list
• Decryption and download in action
• Ngrok public URL in use

📦 How to Run It

git clone https://github.com/yourusername/secure-file-transfer.git
cd secure-file-transfer
python3 -m venv venv
source venv/bin/activate
pip install -r requirement