🔒 Secure Data Vault

A multi-user encryption system built with Streamlit that provides secure data storage with military-grade AES-256 encryption.

✨ Features

• User Authentication: Login/register system with hashed passwords
• Secure Encryption: PBKDF2 key derivation with 100,000 iterations
• Data Management:
  • Store encrypted data with unique passphrases
  • Retrieve data with proper credentials
  • Delete entries with admin verification
• Security:
  • 3-attempt lockout system (30-second timeout)
  • Separate encryption keys per user/data
  • No plaintext storage of sensitive data

🚀 Quick Start

1. Install requirements:

pip install streamlit cryptography

2. Run the app:

streamlit run app.py

3. Register a user or login with: Default admin password: admin123

🛠️ Technical Stack

• Frontend: Streamlit
• Encryption: cryptography (Fernet with AES-256)
• Storage: JSON files (secure_vault.json, users.json)

⚠️ Important Notes

• Change the default MASTER_PASSWORD in production
• For real-world use, store salts/keys more securely
• Data persists via JSON files (in-memory during session)