The quantum era is no longer theoretical — it’s here. Quantum computers are evolving fast enough to break RSA, ECC, and Diffie–Hellman encryption — the foundations of today’s digital security. This book arms you with the practical knowledge, tools, and automation frameworks needed to build, migrate, and secure modern infrastructures against post-quantum threats . Quantum-Resistant Cryptography is a complete hands-on guide to deploying next-generation cryptographic systems using the official NIST-approved PQC standards — Kyber, Dilithium, SPHINCS+, and HQC — along with the Open Quantum Safe (OQS) framework, liboqs, and hybrid TLS 1.3 integrations. It bridges the gap between theory and implementation, giving engineers, architects, and security professionals the step-by-step methods to future-proof real infrastructures. What You’ll Learn Understand the Quantum Threat Landscape: How Shor’s and Grover’s algorithms break RSA and ECC, and what “harvest-now, decrypt-later” means for enterprise data. - Deploy Post-Quantum Standards: Implement Kyber for key encapsulation and Dilithium/SPHINCS+ for digital signatures using OpenSSL 3.x + liboqs. - Build Hybrid Cryptographic Systems: Combine classical and PQC algorithms in TLS 1.3, VPNs, and SSH for seamless backward compatibility. - Automate and Observe Quantum-Safe Operations: Use Ansible, Terraform, Prometheus, and Grafana to configure, benchmark, and monitor PQC deployments at scale. - Integrate PQC Across Real Environments: Protect APIs, cloud workloads, and IoT devices using PQC-enabled Open Quantum Safe providers and WireGuard-OQS. - Governance and Compliance Ready: Align your implementations with NIST PQC standards , FIPS 140-3 , and ISO/IEC 18033-6 security frameworks. Every chapter includes hands-on Practice Labs , guiding you through setup, testing, automation, and optimization — culminating in a Full-Stack Quantum-Resistant Infrastructure Project that integrates PQC-enabled TLS 1.3 across web, API, and database layers. Built for Professionals Who Want to Stay Ahead This book is for: Cybersecurity engineers, DevSecOps specialists, and cryptographers migrating existing systems to PQC. - Cloud architects, network administrators, and software engineers implementing hybrid cryptography in production. - Researchers and practitioners preparing for NIST PQC compliance, CNSA 2.0 readiness, and zero-trust quantum-safe architectures. Modern, Practical, and Future-Proof You’ll go beyond academic discussion — every configuration, command, and automation playbook is tested and production-ready . By the end, you’ll have the expertise to: Design hybrid TLS infrastructures - Deploy PQC VPNs and authentication workflows - Monitor cryptographic performance in real time - Achieve measurable quantum-resilience across your environment Secure your systems before quantum computers make your encryption obsolete. Build the next generation of trust — now.