Build a Secure File Storage System with Encryption

Storing sensitive documents or media in plain form exposes users to data breaches and cyberattacks. A secure file storage system adds a protective layer by encrypting files before storage, ensuring only authorized users can access the data. This project demonstrates practical encryption techniques and secure access control methods.

The system allows users to upload and download files. Files are encrypted on the client-side or server-side before being stored. Access to files is controlled using login systems, and decryption keys are managed securely. Multi-device support and file integrity checks can be added for robustness.

Users log in to the application and upload files. Before storage, files are encrypted using symmetric or asymmetric encryption algorithms. On retrieval, users must verify identity and provide decryption credentials. Optional logs and audit trails track file access for transparency.

• User logs in and uploads a file via the UI.
• The file is encrypted using AES or RSA before saving to cloud/local storage.
• Access credentials and file metadata are stored securely in a database.
• Authorized users can download and decrypt files using their credentials or key.
• File hashes are used to verify data integrity on download.

• AES Encryption Overview (Wikipedia)
• CryptoJS Library (JavaScript)
• PyCryptodome Library (Python)
• AWS S3 File Storage Guide
• Flask Secure File Upload Guide