🔐 NillionVault

A production-ready secure message storage platform powered by Nillion Network with end-to-end encryption, cryptographic verification, and nilChain blockchain anchoring.

🌐 Live Demo

🚀 Try it now: https://nillionvault-frontend.onrender.com/

✅ Store Messages with end-to-end encryption
✅ Verify & Decrypt using proof hashes
✅ Manage Messages with search, filter, and export
✅ Blockchain Anchoring for immutable proof

Backend API: https://nillionvault-backend.onrender.com
Health Check: https://nillionvault-backend.onrender.com/health

✨ Key Features

🔒 Secure Message Storage: Store text messages with end-to-end encryption on Nillion SecretVaults
📦 Bulk Upload: Upload multiple messages at once (up to 50 messages)
🔐 Cryptographic Verification: SHA-256 hash generation for message authenticity
📊 Message Management:
- View all stored messages (metadata only - privacy-first)
- Search and filter messages by filename and hash
- Sort by date, name, or size
- Export messages (all or selected) as JSON
- Delete messages
- View message statistics
- Privacy-First: Message content only accessible via verification hash
🔗 Blockchain Anchoring: Automatic anchoring to nilChain for immutable proof of existence
🎯 Clean UI: Modern, professional interface focused on usability
⚡ Real-time Processing: Instant feedback on storage and verification

🏗️ Architecture

┌─────────────────┐
│  User Browser   │
└────────┬────────┘
         │
         ▼
┌─────────────────┐
│  Frontend       │  HTML/CSS/JavaScript (Port 3000)
│  (Pure HTML)    │
└────────┬────────┘
         │ REST API
         ▼
┌─────────────────┐
│  Backend API    │  Node.js/Express (Port 3001)
│  (Express)      │
└────────┬────────┘
         │
    ┌────┴────┐
    │         │
    ▼         ▼
┌─────────┐ ┌──────────────┐
│ Nillion │ │  nilChain    │
│SecretDB │ │  (Anchoring) │
└─────────┘ └──────────────┘

Technology Stack:

Frontend: Pure HTML5/CSS3/JavaScript (Port 3000) - No frameworks
Backend: Node.js/Express API (Port 3001)
Storage: Nillion SecretVaults (testnet) - Encrypted distributed storage
Blockchain: nilChain testnet - Immutable proof anchoring
Architecture: Nillion-only (no external databases)

📁 Project Structure

NillionVault/
├── 📁 backend/                 # Node.js API server
│   ├── 📁 routes/             # API endpoints
│   │   ├── credentials.js    # Upload, verify, list, delete
│   │   └── verification.js    # Hash computation utilities
│   ├── 📁 services/           # Business logic
│   │   ├── nillion.js         # Nillion SecretVaults integration
│   │   ├── anchor.js          # nilChain blockchain anchoring
│   │   └── queue.js           # Job queue (Nillion-only mode)
│   ├── 📁 middleware/         # Express middleware
│   │   └── errorHandler.js    # Error handling & logging
│   ├── 📁 utils/              # Utility functions
│   │   └── envValidator.js    # Environment validation
│   ├── 📄 server.js           # Main server file
│   ├── 📄 package.json        # Backend dependencies
│   └── 📄 env.example         # Environment template
├── 📁 frontend/               # HTML frontend
│   ├── 📁 public/             # Static files
│   │   ├── 📄 index.html      # Main application
│   │   └── 📄 server.js       # Simple HTTP server
│   └── 📄 package.json        # Frontend dependencies
├── 📁 deploy/                 # Deployment configurations
│   ├── 📄 docker-compose.yml  # Docker setup
│   ├── 📄 render.yaml         # Render deployment config
│   └── 📄 DEPLOYMENT.md       # Deployment guide
├── 📁 docs/                   # Documentation
│   └── 📄 architecture.md     # System architecture
├── 📄 collection-schema.json  # Nillion collection schema
├── 📄 .gitignore              # Git ignore rules
├── 📄 README.md               # This file
└── 📄 LICENSE                 # MIT License

🚀 Quick Start

Prerequisites

Node.js 18+ and npm
Nillion testnet account with nilDB subscription

1. Clone & Install

git clone https://github.com/hitman298/NillionVault.git
cd NillionVault

# Install backend dependencies
cd backend && npm install && cd ..

# Install frontend dependencies  
cd frontend && npm install && cd ..

2. Environment Setup

# Copy environment template
cp backend/env.example backend/.env

# Edit backend/.env with your Nillion credentials

3. Nillion Setup

Get your Nillion testnet private key from Nillion UI
Fund your testnet account with NIL tokens from the faucet
Subscribe to nilDB service (28 NIL/month)

Add your private key to backend/.env:

BUILDER_PRIVATE_KEY=your_64_character_hex_private_key_here

4. Start Development

# Terminal 1 - Backend (Port 3001)
cd backend && npm start

# Terminal 2 - Frontend (Port 3000)  
cd frontend/public && node server.js

5. Access Application

Frontend: http://localhost:3000
Backend API: http://localhost:3001
Health Check: http://localhost:3001/health

⚙️ Configuration

Required Environment Variables

# Nillion Configuration (Testnet)
BUILDER_PRIVATE_KEY=your_64_character_hex_private_key
NILCHAIN_URL=http://rpc.testnet.nilchain-rpc-proxy.nilogy.xyz
NILAUTH_URL=https://nilauth.sandbox.app-cluster.sandbox.nilogy.xyz
NILDB_NODES=https://nildb-stg-n1.nillion.network,https://nildb-stg-n2.nillion.network,https://nildb-stg-n3.nillion.network
NILLION_NETWORK=testnet

# Server Configuration
PORT=3001
NODE_ENV=development
FRONTEND_URL=http://localhost:3000

📡 API Endpoints

Method	Endpoint	Description
`POST`	`/api/credentials/upload`	Store a text message
`POST`	`/api/credentials/verify`	Verify and retrieve message by proof hash
`GET`	`/api/credentials/list`	List all stored messages
`DELETE`	`/api/credentials/:recordId`	Delete a message
`POST`	`/api/verification/compute-hash`	Compute proof hash for data
`POST`	`/api/verification/verify-proof`	Verify a proof hash
`GET`	`/health`	Health check endpoint

Example API Usage

// Store a message
const response = await fetch('/api/credentials/upload', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    textMessage: 'My secret message',
    fileName: 'message.txt'
  })
});

const data = await response.json();
console.log('Proof Hash:', data.proofHash);
console.log('Credential ID:', data.credentialId);

// Verify a message
const verifyResponse = await fetch('/api/credentials/verify', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    proofHash: 'your_proof_hash_here'
  })
});

const verifyData = await verifyResponse.json();
console.log('Retrieved Message:', verifyData.credential.content);

🔒 Security Features

✅ End-to-End Encryption: All messages encrypted using Nillion SecretVaults
✅ SHA-256 Hashing: Cryptographically secure proof hash for verification
✅ Distributed Storage: Data replicated across multiple Nillion nodes
✅ Blockchain Anchoring: Immutable proof on nilChain blockchain
✅ Privacy-First: Message content not exposed in list view - requires verification hash
✅ Verification-Only Access: Content only decryptable with proof hash
✅ Input Validation: Comprehensive validation and sanitization
✅ CORS Protection: Configured for production security
✅ Error Handling: Graceful error handling with detailed logging
✅ HTTPS Ready: SSL/TLS encryption support

📊 Data Storage

Nillion SecretVaults stores all data with:

Encrypted Content: Message content stored in %allot field (encrypted)
Plaintext Metadata: File name, type, size, timestamp (for indexing)
Proof Hash: SHA-256 hash for verification (64-character hex string)
Anchoring: Optional nilChain blockchain anchoring for immutable proof
No External Databases: 100% Nillion-native storage

Data Schema

{
  "_id": "unique-record-id",
  "credential_id": "credential-uuid",
  "proof_hash": "sha256-hash",
  "file_name": "message.txt",
  "file_type": "text/plain",
  "size_bytes": 123,
  "stored_at": "2025-10-31T12:00:00.000Z",
  "document_content": {
    "%allot": "encrypted-message-content"
  }
}

🎯 Use Cases

Secure Notes: Store private notes and thoughts securely
Password Management: Securely store important credentials
Secret Sharing: Share encrypted secrets with proof of existence
Document Verification: Verify message authenticity using proof hashes
Personal Vault: Private encrypted storage for sensitive information
Compliance: Immutable records with blockchain anchoring

📈 Features in Detail

Store Message

Single message storage with instant feedback
Automatic proof hash generation
nilChain anchoring (async, non-blocking)

Bulk Upload

Upload up to 50 messages at once
One message per line
Progress tracking and summary

Message Verification

Retrieve messages using proof hash
Decrypt and display message content
Verify blockchain anchoring status

My Messages

List all stored messages (metadata only)
Privacy-First Design: No content previews - only accessible via verification
Quick actions: Copy Hash, Verify & Decrypt, Delete
Search by filename and hash

Search & Filter

Real-time search by filename and hash (content requires verification)
Filter by date range
Sort by: Newest First, Oldest First, Name (A-Z), Size (Largest)

Export

Export all messages as JSON
Export selected messages only
Includes metadata and proof hashes

Statistics

Total message count
Total storage size
Filtered results count

📈 Performance

Storage Speed: ~2-3 seconds per message
Hash Generation: ~50ms per message
Verification: ~1-2 seconds (including decryption)
List Retrieval: ~1.5 seconds for 100 messages
Concurrent Storage: Supports multiple simultaneous uploads
Message Size Limit: 4KB per message (4096 bytes)

🚀 Production Deployment

Option 1: Render (Recommended)

Backend (Render)

# Connect GitHub repo to Render  
# Build Command: cd backend && npm install
# Start Command: cd backend && npm start
# Add environment variables in dashboard

Frontend (Static Hosting)

Deploy frontend/public folder to any static host
Update FRONTEND_URL in backend .env

Option 2: Docker

docker-compose -f deploy/docker-compose.yml up --build

📖 Detailed deployment guide: deploy/DEPLOYMENT.md

🤝 Contributing

We welcome contributions! Please see our Contributing Guide.

Development Areas

🔧 Nillion SecretVaults SDK integration improvements
🚀 Performance optimizations
🎨 UI/UX enhancements
📱 Mobile responsiveness
🔐 Additional security features
📊 Advanced analytics

📚 Documentation

📖 Architecture Overview - System design and diagrams
🚀 Deployment Guide - Production deployment
🔧 API Reference - Complete API documentation

🔗 What is Anchoring?

Anchoring creates an immutable cryptographic proof that a message existed at a specific time:

Message Hashing: Your message is processed through SHA-256 to create a unique proof_hash
Storage: This hash is stored in NillionDB (encrypted)
Blockchain Proof: The hash is anchored to nilChain blockchain for permanent verification
Verification: Anyone can verify the message existed by checking the hash on the blockchain

Even if the original message is lost, the proof hash on the blockchain proves it existed at that time.

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🆘 Support & Community

🐛 GitHub Issues - Bug reports
💡 GitHub Discussions - Feature requests
📖 Documentation - Complete guides
🌐 Nillion Community - Nillion ecosystem support

🎉 Project Status

This project is production-ready and fully deployed:

✅ Complete Features:

Secure message storage with Nillion SecretVaults encryption
Bulk message upload (up to 50 messages)
Message verification and decryption via proof hash
Message list with metadata (privacy-first, no content previews)
Search and filter functionality
Export messages (JSON format)
Delete messages
Message statistics dashboard
Blockchain anchoring to nilChain
Clean, professional UI

✅ Deployment:

Frontend: Live on Render
Backend: Live on Render
All features tested and working

✅ Security:

End-to-end encryption via Nillion
Privacy-first design (no content exposure)
Verification-required access
Blockchain anchoring for immutable proof

🔐 NillionVault - Secure message storage powered by Nillion Network

🌐 Live Demo | ⭐ Star this repo | 🐛 Report Bug | 💡 Request Feature

Built with ❤️ for the Nillion ecosystem

Name		Name	Last commit message	Last commit date
Latest commit History 21 Commits
backend		backend
deploy		deploy
docs		docs
frontend		frontend
.gitignore		.gitignore
CONTRIBUTING.md		CONTRIBUTING.md
LICENSE		LICENSE
PRIVATE-NILLION-BUG-REPORT.md		PRIVATE-NILLION-BUG-REPORT.md
README.md		README.md
TWEET.md		TWEET.md
collection-schema.json		collection-schema.json

License

hitman298/NillionVault

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