SecureBit.chat - Enhanced Security Edition
The world's first P2P messenger with Lightning Network payments and military-grade cryptography
✨ What's New in v4.01.223
🔒 Comprehensive Connection Security Overhaul
- Advanced mutex framework with 15-second timeout protection
- Race condition prevention through atomic key generation
- Multi-stage validation pipeline with automatic rollback
- Enhanced MITM protection with unique encryption key fingerprints
- Session ID anti-hijacking with mutual authentication challenges
- Package integrity validation for all connection operations
🔐 Secure Key Storage System
- WeakMap-based isolation for all cryptographic keys
- Private key storage replacing public key properties
- Secure access methods with validation and rotation
- Emergency key wipe capabilities for threat response
- Key security monitoring with lifetime limits enforcement
- Backward compatibility maintained through getters/setters
🛡️ Production-Ready Security Logging
- Environment-aware logging (production vs development)
- Data sanitization preventing sensitive information leaks
- Rate limiting and automatic memory cleanup
- Secure debugging without exposing encryption keys
- Privacy protection while maintaining useful diagnostics
📱 Progressive Web App (PWA)
- Install directly on mobile and desktop devices
- Offline mode support with session persistence
- Improved performance through smart caching and service workers
- Native app experience without app store requirements
📂 Secure File Transfer
- End-to-end encrypted file transfers over pure P2P WebRTC channels
- File chunking with individual encryption per block
- Hash validation for every chunk to prevent tampering or MITM attacks
- Automatic recovery for lost packets and interrupted transfers
- AES-GCM 256-bit + ECDH P-384 encryption for files
- SHA-384 checksums for integrity enforcement
🔍 Enhanced Security Testing
- Comprehensive data leakage testing of chat sessions
- Verified MITM and replay attack resistance
- Enhanced memory cleanup algorithms for session termination
- Isolated file streams separated from chat channels
🚀 Try It Now
🌐 Live Demo — SecureBit.chat
No installation required — works directly in your browser with military-grade encryption.
New: Install as PWA for native app experience on mobile and desktop!
✨ What Makes SecureBit.chat Unique
🏆 Industry Leader
- Dominates in 11/15 security categories vs Signal, Threema, Session
- First messenger with Lightning Network integration
- Military-grade cryptography exceeding government standards
- Zero servers — truly decentralized P2P architecture
- PWA technology — install like native apps without app stores
⚡ Lightning Network Pioneer
- Instant satoshi payments for secure sessions
- Pay-per-session model — no ads, no data harvesting
- WebLN integration with all major Lightning wallets
- Sustainable economics for private communication
🔐 12-Layer Military Security
- WebRTC DTLS — Transport encryption
- ECDH P-384 — Perfect forward secrecy
- AES-GCM 256 — Authenticated encryption
- ECDSA P-384 — Message integrity
- Replay protection — Timestamp validation
- Key rotation — Every 5 minutes/100 messages
- MITM verification — Out-of-band codes
- Traffic obfuscation — Pattern masking
- Metadata protection — Zero leakage
- Memory protection — No persistent storage
- Hardware security — Non-extractable keys
- Session isolation — Complete cleanup
- Mutex framework — Race condition protection
- Secure key storage — WeakMap isolation
- Production logging — Data sanitization
🎭 Advanced Privacy
- Complete anonymity — no registration required
- Zero data collection — messages only in browser memory
- Traffic analysis resistance — fake traffic generation
- Censorship resistance — no servers to block
- Instant anonymous channels — connect in seconds
- Secure file transfers — encrypted P2P file sharing
🛡️ Security Comparison
| Feature | SecureBit.chat | Signal | Threema | Session |
|---|---|---|---|---|
| Architecture | 🏆 Pure P2P WebRTC | ❌ Centralized servers | ❌ Centralized servers | ⚠️ Onion network |
| Payment Integration | 🏆 Lightning Network | ❌ None | ❌ None | ❌ None |
| File Transfer | 🏆 P2P encrypted + chunked | ✅ Encrypted via servers | ✅ Encrypted via servers | ✅ Encrypted via servers |
| PWA Support | 🏆 Full PWA installation | ❌ None | ❌ None | ❌ None |
| Registration | 🏆 Anonymous | ❌ Phone required | ✅ ID generated | ✅ Random ID |
| Traffic Obfuscation | 🏆 Advanced fake traffic | ❌ None | ❌ None | ✅ Onion routing |
| Censorship Resistance | 🏆 Hard to block | ⚠️ Blocked in some countries | ⚠️ May be blocked | ✅ Onion routing |
| Data Storage | 🏆 Zero storage | ⚠️ Local database | ⚠️ Local + backup | ⚠️ Local database |
| Economic Model | 🏆 Pay‑per‑session | ⚠️ Donations dependent | ✅ One‑time purchase | ⚠️ Donations dependent |
| Metadata Protection | 🏆 Full encryption | ⚠️ Sealed Sender (partial) | ⚠️ Minimal metadata | ✅ Onion routing |
| Key Security | 🏆 Non‑extractable + hardware | ✅ Secure storage | ✅ Local storage | ✅ Secure storage |
| Perfect Forward Secrecy | 🏆 Auto rotation (5 min) | ✅ Double Ratchet | ⚠️ Partial (groups) | ✅ Session Ratchet |
| Open Source | 🏆 100% + auditable | ✅ Fully open | ⚠️ Only clients | ✅ Fully open |
Legend: 🏆 Category Leader | ✅ Excellent | ⚠️ Partial/Limited | ❌ Not Available
🚀 Quick Start
Option 1: Use Online (Recommended)
- Visit: https://securebitchat.github.io/securebit-chat/
- Install PWA: Click "Install" button for native app experience
- Choose: Create Channel or Join Channel
- Complete: Secure key exchange with verification
- Select: Session type (Demo / Basic / Premium)
- Communicate: With military‑grade encryption + secure file transfers
Option 2: Self‑Host
# Clone repository
git clone https://github.com/SecureBitChat/securebit-chat.git
cd securebit-chat
# Serve locally (choose one method)
python -m http.server 8000 # Python
npx serve . # Node.js
php -S localhost:8000 # PHP
# Open browser
open http://localhost:8000
📂 Secure File Transfer
Features
- P2P Direct Transfer — No servers involved, direct WebRTC channels
- Military-Grade Encryption — AES-GCM 256-bit + ECDH P-384
- Chunk-Level Security — Each file chunk individually encrypted
- Hash Validation — SHA-384 checksums prevent tampering
- Automatic Recovery — Retry mechanisms for interrupted transfers
- Stream Isolation — Separate channels from chat messages
Supported File Types
- Documents: PDF, DOC, TXT, MD
- Images: JPG, PNG, GIF, WEBP
- Archives: ZIP, RAR, 7Z
- Media: MP3, MP4, AVI (size limits apply)
- General: Any file type up to size limits
Security Guarantees
- End-to-end encryption with perfect forward secrecy
- MITM attack prevention through hash validation
- Zero server storage — files transfer directly P2P
- Complete cleanup after transfer completion
⚡ Lightning Network Integration
Session Types
- 🎮 Demo: 6 minutes free (testing)
- ⚡ Basic: 1 hour for 50 satoshis
- 💎 Premium: 6 hours for 200 satoshis
Supported Wallets
| Wallet | WebLN | Mobile | Desktop |
|---|---|---|---|
| Alby | ✅ | ✅ | ✅ |
| Zeus | ✅ | ✅ | ✅ |
| Wallet of Satoshi | ✅ | ✅ | ❌ |
| Muun | ⚠️ | ✅ | ❌ |
| Breez | ✅ | ✅ | ❌ |
| Strike | ✅ | ✅ | ✅ |
And many more WebLN‑compatible wallets.
🔧 Technical Architecture
Cryptographic Stack
📂 File Transfer Layer: AES-GCM 256-bit + SHA-384 + Chunking
🔐 Application Layer: AES-GCM 256-bit + ECDSA P-384
🔑 Key Exchange: ECDH P-384 (Perfect Forward Secrecy)
🛡️ Transport Layer: WebRTC DTLS 1.2
🌐 Network Layer: P2P WebRTC Data Channels
⚡ Payment Layer: Lightning Network + WebLN
📱 PWA Layer: Service Workers + Cache API
Security Standards
- NIST SP 800‑56A — ECDH Key Agreement
- NIST SP 800‑186 — Elliptic Curve Cryptography
- RFC 6090 — Fundamental ECC Algorithms
- RFC 8446 — TLS 1.3 for WebRTC
- RFC 3874 — SHA-384 Hash Algorithm
Browser Requirements
- Modern browser with WebRTC support (Chrome 60+, Firefox 60+, Safari 12+)
- HTTPS connection (required for WebRTC and PWA)
- JavaScript enabled
- Lightning wallet with WebLN (for payments)
- Service Worker support for PWA features
🗺️ Development Roadmap
Current: v4.01.412 — PWA & File Transfer Edition ✅
- Progressive Web App installation
- Secure P2P file transfer system
- Enhanced security testing and MITM protection
- Improved memory cleanup algorithms
Next Releases
v4.5 (Q2 2025) — Mobile & Desktop Apps
- Native mobile applications (iOS/Android)
- Electron desktop application
- Push notifications
- Cross‑device synchronization
- Enhanced PWA features
v5.0 (Q4 2025) — Quantum‑Resistant Edition
- CRYSTALS‑Kyber post‑quantum key exchange
- SPHINCS+ post‑quantum signatures
- Hybrid classical + post‑quantum schemes
- Quantum‑safe migration path
v5.5 (Q2 2026) — Group Communications
- P2P group chats (up to 8 participants)
- Mesh networking topology
- Group Lightning payments
- Anonymous group administration
- Group file sharing
v6.0 (2027) — Decentralized Network
- DHT‑based peer discovery
- Built‑in onion routing
- Decentralized identity system
- Node incentive mechanisms
🧪 Development
Project Structure
securebit-chat/
├── index.html # Main application
├── manifest.json # PWA manifest
├── sw.js # Service worker
├── browserconfig.xml # Browser configuration for PWA
├── src/
│ ├── components/ui/ # React UI components
│ │ ├── DownloadApps.js # PWA download/install component
│ │ ├── FileTransfer.js # File transfer UI component
│ │ └── ... # Other UI components
│ ├── crypto/ # Cryptographic utilities
│ ├── network/ # WebRTC P2P manager
│ ├── session/ # Payment session manager
│ ├── transfer/ # File transfer system
│ │ └── EnhancedSecureFileTransfer.js # Secure P2P file transfer
│ ├── pwa/ # PWA management
│ │ ├── install-prompt.js # PWA installation prompts
│ │ ├── offline-manager.js # Offline mode management
│ │ └── pwa-manager.js # PWA lifecycle management
│ └── styles/ # CSS styling
│ ├── pwa.css # PWA-specific styles
│ └── ... # Other stylesheets
├── logo/ # Wallet logos and icons
├── docs/ # Documentation
└── README.md # This file
Technology Stack
- Frontend: Pure JavaScript + React (via CDN)
- PWA: Service Workers + Cache API + Web App Manifest + Install Prompts
- Cryptography: Web Crypto API + custom ECDH/ECDSA
- Network: WebRTC P2P Data Channels
- File Transfer: Enhanced secure P2P streaming with chunked encryption
- Payments: Lightning Network via WebLN
- Offline Support: Smart caching with offline-manager
- Styling: TailwindCSS + custom CSS + PWA-specific styles
Development Setup
# Clone repository
git clone https://github.com/SecureBitChat/securebit-chat.git
cd securebit-chat
# No build process required — pure client‑side
# Just serve the files over HTTPS
# For development
python -m http.server 8000
# For production
# Deploy to any static hosting (GitHub Pages, Netlify, etc.)
🛡️ Security
Security Audit Status
- ✅ Internal cryptographic review completed
- ✅ P2P protocol security analysis completed
- ✅ File transfer security validation completed
- ✅ MITM and replay attack resistance verified
- 🔄 Professional security audit planned Q3 2025
- 🔄 Post‑quantum cryptography review for v5.0
Vulnerability Reporting
See SECURITY.md for detailed security policy and reporting instructions. Contact: SecureBitChat@proton.me
Security Features
- Perfect Forward Secrecy — Past messages and files secure even if keys compromised
- Out‑of‑band verification — Prevents man‑in‑the‑middle attacks
- Traffic obfuscation — Defeats network analysis
- Memory protection — No persistent storage of sensitive data
- Session isolation — Complete cleanup between sessions
- File integrity — SHA-384 hash validation prevents tampering
- Chunked encryption — Individual encryption per file block
📊 Performance
Benchmarks
- Connection setup: < 3 seconds
- Message latency: < 100 ms (P2P direct)
- File transfer speed: Up to 5 MB/s per connection
- Throughput: Up to 1 MB/s per connection
- Memory usage: < 50 MB for active session
- Battery impact: Minimal (optimized WebRTC)
- PWA install size: < 2 MB
Scalability
- Concurrent connections: Limited by device capabilities
- Message size: Up to 2000 characters
- File size: Up to 100 MB per file
- File types: All formats supported
- Group size: Up to 8 participants (v5.5)
📄 License
MIT License — see LICENSE file for details.
Open Source Commitment
- 100% open source — full transparency
- MIT license — maximum freedom
- No telemetry — zero data collection
- Community‑driven — contributions welcome
🤝 Contributing
We welcome contributions from the community!
How to Contribute
- Fork the repository
- Create a feature branch:
git checkout -b feature/amazing-feature - Commit your changes:
git commit -m "Add amazing feature" - Push to the branch:
git push origin feature/amazing-feature - Open a Pull Request
Contribution Areas
- 🔐 Cryptography — Security improvements and audits
- 🌐 Network — P2P optimization and reliability
- ⚡ Lightning — Payment integration enhancements
- 📂 File Transfer — EnhancedSecureFileTransfer improvements
- 📱 PWA — Install prompts, offline management, and PWA lifecycle
- 🎨 UI/UX — Interface improvements, FileTransfer and DownloadApps components
- 📚 Documentation — Guides, tutorials, translations
Development Guidelines
- Follow existing code style
- Add tests for new features
- Update documentation
- Respect security‑first principles
- Test PWA functionality across devices
📞 Contact & Support
Official Channels
- Email: SecureBitChat@proton.me
- GitHub: Issues & Discussions
- Security: SecureBitChat@proton.me
Community
- Discussions: GitHub Discussions for feature requests
- Issues: Bug reports and technical support
- Wiki: Documentation and guides
⚠️ Important Disclaimers
Security Notice
While SecureBit.chat implements military-grade cryptography and follows security best practices, no communication system is 100% secure. Users should:
- Always verify security codes out-of-band
- Keep devices and browsers updated
- Be aware of endpoint security risks
- Use reputable Lightning wallets
- File transfers are protected with the same military-grade cryptography as chat messages
Legal Notice
This software is provided "as is" for educational and research purposes. Users are responsible for compliance with local laws and regulations regarding:
- Cryptographic software usage
- Private communications
- Bitcoin/Lightning Network transactions
- File sharing and transfer
Privacy Statement
SecureBit.chat:
- Collects zero data - no analytics, tracking, or telemetry
- Stores nothing - all data exists only in browser memory
- Requires no registration - completely anonymous usage
- Uses no servers - direct P2P connections only
- Files are transferred directly P2P with zero server storage
🎯 Why Choose SecureBit.chat?
For Privacy Advocates
- True zero-knowledge architecture
- Military-grade encryption standards
- Complete anonymity and untraceability
- Resistance to censorship and surveillance
- Secure P2P file sharing without servers
For Bitcoin/Lightning Users
- Native Lightning Network integration
- Sustainable pay-per-session model
- Support for all major Lightning wallets
- No KYC or account requirements
For Mobile Users
- Progressive Web App installation
- Offline mode support
- Native app experience without app stores
- Works on all modern mobile devices
For Developers
- 100% open source transparency
- Modern cryptographic standards
- Clean, auditable codebase
- Extensible modular architecture
- PWA best practices implementation
For Everyone
- Install like native apps
- Works offline with session persistence
- Works on all modern devices
- Intuitive user interface
- Professional security standards
- Secure file transfers included
SecureBit.chat Security Team
Committed to protecting your privacy with military-grade security
Report vulnerabilities: SecureBitChat@proton.me
Latest Release: v4.01.412 — PWA & Secure File Transfer