📁 Share-IT: Secure File Sharing System

Share-IT is a secure, scalable full-stack web application designed for internal organizational use. It allows users to upload and share files via unique, time-bound, and password-protected links.

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🚀 Key Features

• Secure Uploads: Multi-format validation with size limits.
• Time-Bound Links: Links automatically expire after a set duration.
• Shielded Sharing: Optional AES-encrypted password protection.
• Admin Control: Full dashboard to monitor file traffic and manage storage.
• Auth System: Secure JWT-based authentication for administrative tasks.

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🌟 Why Share-IT?

In an era of data breaches, relying on public cloud links or unencrypted email attachments is a risk. Share-IT is necessary because it provides:

1. Corporate Confidentiality: Ideal for HR or Legal departments to share sensitive documents (contracts, payroll) that must "vanish" after 24 hours.
2. Reduced Storage Bloat: Since links are time-bound, the system automatically encourages a "clean-as-you-go" storage policy, preventing servers from filling up with old files.
3. Internal Security: Avoids "Shadow IT" (employees using personal Dropbox/WeTransfer) by providing a controlled, audited internal alternative.
4. Developer Collaboration: Securely share .env templates or configuration files across team members with password protection.

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🛠️ Technology Stack

Frontend	Backend	Database	Tools
React.js + Vite	Node.js	MongoDB	Figma
TypeScript	Express	Mongoose	Postman
Axios	Multer		Git / GitHub

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🔄 System Flow

graph TD
    A[User Selects File] --> B{Validation}
    B -- Type/Size OK --> C[Upload to Server]
    B -- Invalid --> D[Error Message]
    C --> E[Generate Unique Link]
    E --> F[Set Expiry & Password]
    F --> G[(Store in MongoDB)]
    G --> H[Share Link with Recipient]
    H --> I{Recipient Access}
    I -- Password Required --> J[Verify Password]
    I -- Direct Access --> K[Download File]
    J -- Success --> K
    K --> L[Update Download Stats]

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📂 Project Structure

Directory	Description
📂 backend/ 📂 controllers/ - Request handling logic 📂 models/ - Mongoose schemas (File, User) 📂 routes/ - API endpoint definitions 📂 middleware/ - Auth & Multer config 📂 uploads/ - Physical file storage server.js - Entry point	Node.js & Express server-side logic
📂 frontend/ 📂 src/components/ - Reusable UI elements 📂 src/pages/ - View components 📂 src/services/ - API integration vite.config.ts - Build configuration	React + TypeScript client application

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⚙️ Quick Start

1. Clone & Install

git clone https://github.com/Secure-File-Sharing-System.git
npm install # Run in both /frontend and /backend

2. Configure Environment (backend/.env)

PORT=5000
MONGO_URI=mongodb://localhost:27017/secureFileDB
JWT_SECRET=your_jwt_secret_key

3. Launch

# Start Backend
cd backend && npm run dev

# Start Frontend
cd frontend && npm run dev

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🤝 Contributions

We welcome contributions from everyone! To keep the project healthy and safe, please refer to the following:

• Contribution Guidelines: Learn how to report bugs or submit features in CONTRIBUTING.md.
• Community Standards: We follow a strict CODE_OF_CONDUCT.md to ensure a welcoming environment.

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⚖️ License

This project is licensed under the GNU General Public License v3 (GPLv3). This ensures that the code remains free and open-source for everyone. See the LICENSE file for details.

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Built to provide a secure bridge for data, ensuring privacy remains a right, not a privilege.