Cloud Security Using Two Key Encryption

This project focuses on the development of a secure file encryption and decryption system using asymmetric cryptography. By utilizing a two-key mechanism—public and private keys—the platform ensures that only authorized users can access encrypted files, making it highly secure for data storage and transmission. The system is built using PHP for backend processing, HTML for the user interface, and MySQL for storing metadata related to encrypted files. The AES algorithm forms the core of the encryption logic, offering both reliability and proven security. The design follows a three-tier architecture that separates user interaction, processing logic, and data storage, enhancing both scalability and maintainability. Deployed locally using XAMPP, the system was tested across various scenarios to ensure efficiency and user-friendliness. It supports core functionalities without storing the actual files in the database, thereby minimizing risk and reducing system load. This encryption tool serves as a practical demonstration of cybersecurity principles and provides a solid foundation for future upgrades like biometric logins and cloud integration. The project successfully meets its objectives while addressing current digital security demands.