This preprint introduces QPMIE (Physical Measurement Integrated Encryption Architecture), a conceptual reference architecture that proposes the Physical Trust paradigm for future hybrid quantum-classical computing environments.
Trusted Computing (TC), which has long been the cornerstone of hardware-based platform integrity, faces an existential threat from the advent of large-scale quantum computers capable of breaking its underlying classical cryptography. This review systematically analyzes the imperative transition to Post-Quantum Trusted Computing (PQC-TC), synthesizing the leading research and industry-driven efforts to secure this critical paradigm. We present a taxonomy of PQC-TC approaches, including the PQC modernization of existing Trusted Platform Modules (TPMs) for functions like measured boot and remote attestation. Our analysis highlights the dual challenges of adapting to new algorithms with significantly larger key sizes and higher computational overheads, as well as the need for robust migration strategies. We examine the pivotal roles of the NIST PQC Standardization Process and the Trusted Computing Group (TCG) in defining the path to commercial readiness. While PQC modernization is the most viable nearterm solution, we identify open research challenges in formal security modeling, resource optimization for embedded systems, and the long-term potential of hybrid architectures integrating quantum hardware. This paper concludes that the successful evolution of TC hinges on proactive, collaborative efforts to build a secure, resilient, and quantum-ready foundation for future digital systems.
This preprint presents the NEPO Project, a foundational proposal for a modular, hybrid quantum–classical communication infrastructure designed to remain viable under long-term technological uncertainty. Rather than treating quantum security as a standalone cryptographic upgrade, the work frames secure communication as a system-level constraint involving hardware architecture, deterministic identity, memory partitioning, routing, and verification as co-dependent primitives. The proposed architecture introduces a layered, two-plane network model in which quantum key distribution functions as a root of trust, while classical computation and localized agents provide scalability, adaptability, and fault tolerance. Devices are treated as accountable participants within a partitioned mesh, independent of ownership or trust assumptions. Mathematical formalisms, physical signal models, and material-specific optimizations are intentionally deferred to supplementary work in order to preserve architectural clarity and longevity. This document is intended as an architectural and conceptual foundation for future research in distributed systems, secure networking, and quantum-aware infrastructure design.
Abstract— The advancement of quantum computing presents significant risks to conventional cryptographic systems that secure modern communication networks. This paper proposes an Adaptive Quantum–Classical Trust Communication System (AQCTCS), a hybrid secure messaging framework designed to enhance resilience against both classical and quantum threats. The system integrates three security layers: AES-256 for classical encryption, Post-Quantum Cryptography (PQC) for quantum-resistant protection, and a BB84-based Quantum Key Distribution (QKD) simulation for high-risk scenarios. A Trust Engine continuously evaluates security indicators, including anomaly detection parameters and Quantum Bit Error Rate (QBER), to compute a dynamic trust score. Based on this score, an Adaptive Security Controller automatically selects the appropriate encryption mode, balancing performance and security. The platform is implemented as a web application using React for the frontend, FastAPI for backend services, and Qiskit for QKD simulation. AQCTCS demonstrates an adaptive, scalable, and future-ready communication architecture suitable for post-quantum environments. Keywords— Quantum Key Distribution, Post-Quantum Cryptography, AES-256, Trust Engine, BB84 Protocol, Adaptive Encryption, Secure Messaging, QBER.
The emergence of quantum computing challenges the security of current cryptographic standards, mobilizing investigation and development of post-quantum cryptographic (PQC) schemes. We consider a unified approach for pre-quantum-proofing cryptographic infrastructure. It attempts to overcome these short comings and propose hybrid integration, optimized algorithm for resource constraint environment and secure migration. We focus on side-channel resistance, forward secrecy, and performance overhead in real-world application scenarios. We propose a common metric to evaluate quantum robustness. The goal of this work is to bridge the gap between theoretical PQC and scalable, enterprise-quality solutions.