SecureBit.chat - Enhanced Security Edition

The world's first P2P messenger with Lightning Network payments and military-grade cryptography

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✨ What's New in v4.01.413

🔒 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

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🚀 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!

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✨ 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

1. WebRTC DTLS — Transport encryption
2. ECDH P-384 — Perfect forward secrecy
3. AES-GCM 256 — Authenticated encryption
4. ECDSA P-384 — Message integrity
5. Replay protection — Timestamp validation
6. Key rotation — Every 5 minutes/100 messages
7. MITM verification — Out-of-band codes
8. Traffic obfuscation — Pattern masking
9. Metadata protection — Zero leakage
10. Memory protection — No persistent storage
11. Hardware security — Non-extractable keys
12. Session isolation — Complete cleanup
13. Mutex framework — Race condition protection
14. Secure key storage — WeakMap isolation
15. 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

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🛡️ 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

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🚀 Quick Start

Option 1: Use Online (Recommended)

1. Visit: https://securebitchat.github.io/securebit-chat/
2. Install PWA: Click "Install" button for native app experience
3. Choose: Create Channel or Join Channel
4. Complete: Secure key exchange with verification
5. Select: Session type (Demo / Basic / Premium)
6. 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

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📂 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

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⚡ 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.

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🔧 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

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🗺️ Development Roadmap

Current: v4.01.413 — 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

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🧪 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.)

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🛡️ 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

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📊 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)

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📄 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

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🤝 Contributing

We welcome contributions from the community!

How to Contribute

1. Fork the repository
2. Create a feature branch: git checkout -b feature/amazing-feature
3. Commit your changes: git commit -m "Add amazing feature"
4. Push to the branch: git push origin feature/amazing-feature
5. 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

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📞 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

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⚠️ 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

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🎯 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

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SecureBit.chat Security Team

Committed to protecting your privacy with military-grade security

Report vulnerabilities: SecureBitChat@proton.me

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Latest Release: v4.01.413 — PWA & Secure File Transfer