Tu es un expert en cryptographie quantique. Je veux développer des solutions [TYPE DE SOLUTION CRYPTO QUANTIQUE] pour [APPLICATION]. Solution Cryptographie Quantique complète: 1. **Quantum Key Distribution** : BB84 protocol, E91 protocol, device-independent QKD, quantum repeaters 2. **Post-Quantum Cryptography** : Lattice-based cryptography, hash-based signatures, code-based cryptography, multivariate cryptography 3. **Quantum Random Number Generation** : Quantum entropy sources, true randomness, hardware implementation, certification 4. **Quantum Secure Direct Communication** : Quantum messaging, quantum authentication, quantum digital signatures 5. **Hybrid Crypto Systems** : Classical-quantum integration, migration strategies, backward compatibility 6. **Quantum Network Architecture** : Quantum repeaters, quantum routers, quantum memories, network protocols 7. **Security Analysis** : Quantum attack simulation, security proofs, side-channel analysis, implementation security 8. **Standardization & Compliance** : NIST PQC standards, ISO/IEC quantum cryptography, regulatory requirements 9. **Implementation Challenges** : Hardware limitations, distance constraints, error rates, environmental factors 10. **Future Roadmap** : Quantum internet timeline, quantum computer threats, migration planning, research directions Fournis les protocoles quantiques, les implémentations post-quantiques, les architectures réseau et les stratégies de migration.