Project Description:

The Document Encryption & Secure Sharing Platform is a web-based system designed for users to upload, encrypt, and securely share confidential documents with specific recipients. It ensures that files are protected from unauthorized access using end-to-end encryption, password protection, and expiration links. Ideal for academic, corporate, or legal environments where data privacy is essential.

Key Features:

1. User Registration & Login:

   • Role-based login (e.g., user/admin).

   • Secure authentication using JWT or OAuth 2.0.

2. Document Upload & Encryption:

   • Upload documents (PDF, DOCX, XLSX, etc.).

   • Choose encryption method: AES, RSA, or password-based.

   • Option to set file access expiration time.

3. Secure Link Generation:

   • Generate unique, encrypted download links.

   • Option to add a password or email-based access restriction.

4. Access Control:

   • Only authorized recipients can decrypt/download documents.

   • Option to limit number of downloads or views.

5. Document Sharing Dashboard:

   • Track which documents are shared, with whom, and access logs.

   • See when files were viewed or downloaded.

6. Activity Logs & Audit Trail:

   • Full logs of upload, access attempts, and file activity.

   • Detect suspicious or unauthorized activity.

7. File Deletion & Expiry Handling:

   • Auto-deletion of files after expiry date or download limit.

   • Manual revoke access option.

8. Admin Panel:

   • Manage users, monitor system logs, and oversee all file sharing activity.

Tech Stack Suggestions:

• Frontend: HTML, CSS, Bootstrap, JavaScript

• Backend: Node.js / PHP / Java

• Database: MySQL / MongoDB

• Encryption Libraries:

  • Node.js: crypto, bcryptjs, jsonwebtoken

  • PHP: OpenSSL, mcrypt

  • Java: javax.crypto, BouncyCastle

• File Handling: Multer (Node.js), FileReader API, or file upload scripts in PHP/Java