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FORENSIC AUDIT // NOVA-CHAT
Cryptographic MessagingIn DevelopmentTimeline: 7 Weeks · Security & Mobile Architect

Nova Secure Chat

Zero-knowledge end-to-end encrypted messaging with offline store-and-forward queueing.

ENCRYPTION STANDARDSignal ProtocolDouble Ratchet + Curve25519
OUTBOX QUEUE100% ReliableEncrypted SQLite journal
DELIVERY LATENCY< 45ms GlobalDirect WebSockets push
Executive Overview

Nova is a privacy-first mobile messaging app designed for journalists and security researchers, guaranteeing forward secrecy and zero metadata retention.

Core Engineering Challenge

Traditional messengers leak message metadata and fail to handle offline message queueing gracefully when moving through intermittent airplane or cellular tunnels.

Distributed Node Topology

Data pipeline flow and computational delegation across system layers:

NODE 01libsodium / Curve25519
Crypto Core
Key exchange and ratchet state
NODE 02SQLCipher
Secure Storage
Hardware-enclave backed database
NODE 03WebSockets + Rust
Transport Layer
TLS 1.3 encrypted WebSocket tunnel
Architectural Strategy

Combines the Double Ratchet cryptographic protocol with an encrypted offline journal. Messages sent while offline are stored with ephemeral session keys in hardware-backed storage and dispatched automatically when connectivity returns.

Architectural Engagement

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