jack
3fb39b8a30
Add protocol version negotiation for future compatibility
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- Add version negotiation messages (0x20 versionHello, 0x21 versionAck)
- Implement VersionHello and VersionAck message types with platform info
- Add ProtocolVersion struct for version management and negotiation
- Update BinaryProtocol to check supported versions
- Add version negotiation to connection flow before Noise handshake
- Maintain backward compatibility with legacy peers (assume v1)
- Add comprehensive test suite with 40+ test cases
- Update documentation with version negotiation details
This ensures BitChat clients can negotiate protocol versions for smooth
upgrades while maintaining full backward compatibility with existing clients.
2025-07-15 14:33:37 +02:00
jack
3070a4d307
Implement Noise Protocol Framework and peer ID rotation for enhanced security and privacy
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This major update replaces the basic encryption with the Noise Protocol Framework
and adds ephemeral peer ID rotation for enhanced privacy.
Key Changes:
Security Infrastructure:
- Implemented Noise Protocol Framework (XX handshake pattern)
- End-to-end encryption with forward secrecy and identity hiding
- Session management with automatic rekey support
- Channel encryption with password-derived keys
Privacy Enhancements:
- Ephemeral peer ID rotation (5-15 minute random intervals)
- Persistent identity through public key fingerprints
- Favorites and verification persist across ID rotations
- Block list based on fingerprints, not ephemeral IDs
Core Components Added:
- NoiseEncryptionService: Main encryption service
- NoiseSession: Individual peer session management
- NoiseChannelEncryption: Password-protected channel support
- SecureIdentityStateManager: Persistent identity storage
- FingerprintView: Visual fingerprint verification UI
Bug Fixes:
- Fixed handshake storm with tie-breaker mechanism
- Fixed missing connect messages during peer rotation
- Fixed delivery ACK compression issues
- Fixed race conditions in message queue
- Fixed nickname resolution for rotated peer IDs
Testing:
- Comprehensive test suite for Noise implementation
- Security validator tests
- Channel encryption tests
- Identity persistence tests
- Rate limiter tests
Documentation:
- BRING_THE_NOISE.md: Technical implementation details
- Updated WHITEPAPER.md: Simplified and focused on core innovations
- Removed temporary debug documentation
The implementation maintains backward compatibility while significantly
improving security and privacy. All existing features (channels, private
messages, favorites, blocking) work seamlessly with the new system.
2025-07-15 13:15:31 +02:00
