Changelog

Cryptography

• Hybrid X3DH key exchange with X25519 + ML-KEM-768
• Double Ratchet with AES-256-GCM and HKDF-SHA256
• Sealed sender metadata protection
• Encrypted prekey bundle distribution
• SQLCipher local storage encryption

Messaging

• End-to-end encrypted 1:1 messaging
• End-to-end encrypted group messaging (Sender Keys)
• Disappearing messages (configurable timer)
• Read receipts (optional, off by default)
• Typing indicators (optional, off by default)

Files

• Encrypted file transfer (any size)
• Automatic EXIF metadata stripping
• Image, video, audio, and document support

Network

• Tor onion routing for all client-server traffic
• DHT-based peer discovery
• Offline mesh messaging via Bluetooth and WiFi Direct
• Cover traffic for timing resistance

Security

• Panic mode (duress PIN wipes cryptographic material)
• Travel mode (restricts visible conversations)
• QR code identity verification
• Safety number comparison
• Screen security (prevents screenshots on mobile)

Platform Support

• macOS (Apple Silicon + Intel)
• Linux (AppImage, .deb)
• Windows (.msi)
• Android (APK)
• iOS (TestFlight)

Testing

• 522+ tests passing
• 91.6% code coverage
• 500M+ fuzz iterations across all harnesses, zero crashes