10K+
ACTIVE USERS
E2EE
ENCRYPTION
0
DATA BREACHES
24/7
AVAILABILITY
THE CHALLENGE
Consumer messaging apps offered either strong encryption or a seamless user experience—rarely both. Implementing the Double Ratchet algorithm in a React Native environment required careful bridging of native cryptographic primitives without compromising cross-platform compatibility.
AVAILABLE FOR CONSULTATION
ARCHITECTURE
Double Ratchet Protocol
Custom TypeScript implementation of the Signal Double Ratchet algorithm using WebCrypto APIs for forward secrecy.
Encrypted SQLite Store
SQLCipher-backed message storage with per-conversation key derivation and automatic key rotation on session refresh.
Sealed Sender Delivery
Server-blind message delivery using sealed sender envelopes, preventing metadata correlation by the infrastructure layer.
CORE CAPABILITIES
Forward Secrecy
Each message uses a unique ephemeral key. Compromising one session key cannot decrypt past or future messages.
Multi-Device Sync
Secure multi-device message sync using the Sesame algorithm without ever exposing plaintext to the server.
Metadata Privacy
Sealed sender and private contact discovery ensure server operators cannot build social graphs from message metadata.
ENGINEERED WITH
React Native
TypeScript
WebCrypto
SQLite
Node.js
Docker
Interested in the technical breakdown?
I've written a detailed technical post on implementing the Double Ratchet in React Native. Reach out to explore the cryptographic architecture or request a security review.
SCHEDULE A TECH DEMO
DOWNLOAD WHITEPAPER