Build a Secure Cloud-Based Document Storage System
Create a privacy-focused file management system where users can upload, access, and manage encrypted documents with full control over permissions and versioning.Storing sensitive files like contracts, legal documents, or intellectual property in the cloud demands robust encryption, strict access control, and auditability. This project provides secure document storage while meeting compliance regulations like GDPR or HIPAA.
Allow users to upload documents that are encrypted at rest and in transit, with access governed by roles or token-based sharing. Include file versioning, expiry-based links, and a secure frontend dashboard for access logs and file previews.
Encrypted Document Upload
Use AES or KMS to encrypt files before storing in cloud storage like AWS S3 or Firebase Storage.
Role-Based Access Control
Only allow authorized users to access, edit, or delete specific files via IAM/Cognito roles or user roles in Firestore.
Versioning and Audit Logs
Track who accessed or changed a file, and allow users to restore previous file versions.
Secure Sharing Links
Generate time-bound, password-protected links to share files securely with third parties.
Files are uploaded through a secure frontend. A backend service (Node.js/Firebase Functions) encrypts and stores the files in S3 or Firebase. Metadata is saved in Firestore or DynamoDB. Users can view access history, restore older versions, or revoke sharing permissions.
- Frontend: React.js with secure file input components
- Backend: Node.js/Express or Firebase Functions with AWS SDK
- Storage: AWS S3 (SSE-KMS) / Firebase Storage
- Database: Firestore / DynamoDB for metadata and roles
- Auth: Firebase Auth / AWS Cognito for user management
Frontend UI
React.js + Tailwind CSS, file upload components, modals, and role-based views
Cloud Backend
Firebase Functions / Node.js APIs + AWS SDK for S3/KMS integration
Storage & Security
S3 with SSE-KMS / Firebase Storage + IAM/Cognito for permission handling
Extras
Audit log tables, PDF viewer plugin, file expiration rules, download throttling
1. Create Secure Upload Workflow
Use signed URLs or direct uploads with HTTPS; encrypt documents server-side using KMS.
2. Implement Access Roles
Create a user/role hierarchy using Firestore rules or Cognito groups and restrict access accordingly.
3. Enable Sharing with Expiry
Generate limited-time shareable links with usage restrictions and revoke access anytime.
4. Track Access & Changes
Log every action performed on a document and show audit trails in the dashboard.
5. Add Version Control & Restore
Allow users to see file history and revert to earlier versions on demand.
Protect Documents with Enterprise-Level Cloud Security
Build a cloud-based document storage solution that ensures encryption, access control, version history, and secure sharing — all in one seamless platform.