Problem
Sensitive communication systems face harvest-now-decrypt-later risk as quantum-capable attackers become more realistic.
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GitHub
post-quantum-messaging-app
A secure messaging application implementing post-quantum cryptographic algorithms to ensure future-proof communication.
RustCryptographyPost-Quantum
System Architecture
Repository Evidence
Measured from GitHub public repository data on May 31, 2026.
Primary language
Rust
Last public update
2026-04-16
Tracked issues
0
Repository size
14.0 MB
Language mix
RustTypeScriptKotlinPythonSwift
Case Study
Architecture
A Rust core provides cryptographic operations for CLI, mobile, web, and desktop bridges, while the server handles sealed inbox synchronization and relay duties.
Security Approach
The design favors memory-safe implementation, post-quantum primitives, sealed message handling, and protocol-model verification gates.
Outcome
The application demonstrates how a modern messaging stack can isolate cryptography from clients while preparing for post-quantum migration.
Evidence
Rust cryptographic coreCross-platform bridge modelProtocol verification artifacts
Lessons Learned
- Cryptographic products need protocol evidence, not only algorithm names.
- A shared core reduces drift across platform clients.
Technical Overview
Implemented in Rust for memory safety and performance. Utilizes NIST-approved post-quantum cryptographic algorithms (like CRYSTALS-Kyber and CRYSTALS-Dilithium) to secure message exchange against attacks from quantum computers.
Value Proposition
Future-proof your communications. As quantum computing advances, traditional encryption will become obsolete. Our post-quantum messaging app ensures your sensitive data remains secure against tomorrow's threats, today.