This paper presents a comprehensive framework for implementing secure communication in e governance systems through the integration of Quantum Key Distribution (QKD) within a cyber-physical system (CPS) architecture. With the increasing vulnerability of traditional cryptographic methods and the rising threats to sensitive government communications, there is a critical need for quantum-resistant security solutions. We propose a novel approach that leverages QKD's fundamental quantum mechanical principles to establish unconditionally secure key distribution channels within the cyber physical infrastructure of e-governance systems. The research demonstrates the implementation of a prototype secure chat application that utilizes the BB84 protocol for key generation and distribution, while maintaining real-time synchronization between the quantum and classical components of the CPS. Furthermore, the integration of QKD within the cyber-physical framework enables seamless interaction between quantum communication channels and physical infrastructure components, ensuring both data security and system reliability. This research contributes to the advancement of quantum-secure e-governance solutions and provides a scalable architecture for future government communication systems.
This paper presents a comprehensive framework for implementing secure communication in e governance systems through the integration of Quantum Key Distribution (QKD) within a cyber-physical system (CPS) architecture. With the increasing vulnerability of traditional cryptographic methods and the rising threats to sensitive government communications, there is a critical need for quantum-resistant security solutions. We propose a novel approach that leverages QKD's fundamental quantum mechanical principles to establish unconditionally secure key distribution channels within the cyber physical infrastructure of e-governance systems. The research demonstrates the implementation of a prototype secure chat application that utilizes the BB84 protocol for key generation and distribution, while maintaining real-time synchronization between the quantum and classical components of the CPS. Furthermore, the integration of QKD within the cyber-physical framework enables seamless interaction between quantum communication channels and physical infrastructure components, ensuring both data security and system reliability. This research contributes to the advancement of quantum-secure e-governance solutions and provides a scalable architecture for future government communication systems.
The exponential growth of the Internet of Things (IoT) and its integration into critical infrastructures has elevated the need for robust and future-proof security mechanisms. Traditional cryptographic systems, while effective today, are increasingly vulnerable to advancements in quantum computing. This paper explores the integration of Quantum Key Distribution (QKD) as a novel security paradigm for next-generation IoT ecosystems. QKD leverages the principles of quantum mechanics to enable unconditionally secure key exchange, immune to computational attacks. We propose an architecture where QKD-enabled edge gateways and IoT nodes facilitate real-time secure communication through quantum-secured channels. The study analyzes the feasibility of implementing QKD in resource-constrained IoT environments and evaluates its performance in terms of key generation rate, latency, and energy consumption. Simulation results demonstrate that the proposed QKD-IoT framework significantly outperforms conventional encryption protocols in resisting both classical and quantum-based attacks, making it a viable foundation for building post-quantum resilient IoT infrastructures. The research also outlines the challenges related to scalability, hardware integration, and key management, and proposes solutions through hybrid QKD-classical cryptography models. This work paves the way for a quantum-secure IoT future, ensuring trust, privacy, and integrity in hyper-connected digital ecosystems.
Cyber-Physical Systems (CPS) play a vital role in modern smart environments like smart grids, healthcare systems, industrial automation, and intelligent transport systems. Ensuring secure and efficient communication in CPS is challenging due to rising cyber threats and data privacy issues. Traditional cryptographic techniques are becoming insufficient, especially with the growing threat of quantum computing. This research proposes a security framework for improving throughput efficiency of cyber-physical systems communications using quantum cryptography by implementing the B92 Quantum Key Distribution (QKD) protocol. The B92 protocol utilizes only two non-orthogonal quantum vectors for secure key generation and distribution, reducing resource consumption and communication overhead. The proposed framework is simulated using MATLAB to model CPS secure communication and evaluate performance metrics such as throughput efficiency, key production rate, quantum bit error rate (QBER), and end-to-end latency. The simulation results show that the B92-based quantum cryptography approach significantly improves throughput efficiency by minimizing key negotiation time while maintaining robust security. This study highlights the effectiveness of integrating quantum cryptography in CPS for building scalable, future-proof, and secure communication systems, ensuring data integrity and privacy against emerging quantum computing threats.
Cyber-physical systems (CPS) are a technological marvel forming our modern world's backbone. These systems, which integrate physical processes, embedded systems, networking infrastructure, IoT, communication protocols, intelligent algorithms, and other application-specific resources, mark the convergence of computing with control and communication. They unify physical and cyber systems, paving the way for the next generation of critical systems such as autonomous transportation, smart grids, industrial IoT, and more. The next-generation CPS, characterized by their integration of physical processes, embedded systems, networking infrastructure, IoT, communication protocols, and intelligent algorithms, are set to revolutionize our world. These systems will incorporate AI and ML-based algorithms for decision-making and optimization. At the same time, edge and fog computing models will be integrated into the infrastructure to reduce data transmission latencies. New-generation networks like 5G and above will provide high-speed connectivity and seamless integration of devices and components. Digital twins will become a standard tool for simulating new scenarios, predictive maintenance, and more. As security threats for cyber-physical systems evolve alarmingly, robust protection becomes increasingly crucial. Quantum Key Distribution (QKD) is a promising solution in this context. With their ability to provide secure cryptographic key exchanges in the operating environments of cyber-physical systems, QKD protocols are gaining traction as the industry shifts towards quantum computing.
Sixth-generation (6G) networks offer unprecedented ultra-reliability, capacity, and low-latency communication. Nevertheless, the same developments also pose security threats to complex communication infrastructures that may be resistant to traditional cryptographic tools, especially in the context of quantum computing. Quantum Key Distribution (QKD) is an innovative technique for achieving unconditional security that leverages quantum-mechanical principles to share cryptographic keys securely. This paper discusses how QKD can be integrated into 6G and beyond networks and used to ensure the confidentiality and integrity of data across applications such as autonomous systems, the Internet of Things (IoT), and smart city infrastructure. This paper explores the architecture of QKD-based 6G communication, key-generation systems, and quantum-resistant network layers. It also examines scalability, synchronization, and hardware implementation, and suggests possible hybrid approaches for integrating classical and quantum security protocols. The results imply that the idea of QKD may become the foundation of safeguarded communication systems in the future, ensuring resilience against attacks in the quantum era and enabling individuals to trust the next generation of wireless.
Cyber-physical systems (CPSs) based on the Internet of Things (IoT) form the backbone of modern smart infrastructures, including smart cities, healthcare monitoring, industrial automation, and intelligent transportation. However, connecting many resource-limited IoT devices makes them more vulnerable to cyber threats, particularly quantum attacks. This review comprehensively examines quantum-secure communication (QSC) frameworks for IoT-enabled CPS, focusing on Quantum Key Distribution (QKD), post-quantum cryptographic (PQC) algorithms, and hybrid quantum–classical security models suitable for constrained devices. A PRISMA-guided search of the Scopus and Google Scholar database was conducted in January 2026 using three keyword groups related to hybrid security, artificial intelligence, and cyber-physical systems. Based on the evaluation, 6008 publications have been identified between 2001 and 2026. The first-round screening was performed for 4948 articles, after excluding duplicates. During the screening stage, 348 articles were selected for abstract scrutiny, 115 records were excluded due to no direct focus on CPS/IoT applications, 52 studies were excluded because these papers relied on traditional security models, 25 studies were excluded due to insufficient relevance to the review objectives, and 15 additional non-English studies were removed. Following the screening stage, 141 studies were selected for full-text eligibility. Out of those, 86 studies were removed due to a lack of specific evaluation metrics or not being published in a peer-reviewed venue. Furthermore, the publications are classified as QKD-based secure CPS and QSC for industrial IoT, AI-Assisted Secure Communication for CPS Networks, and hybrid PQC-QKD models for CPS/IoT devices. This article investigates recent advancements in secure data transmission, verified protocols, and AI-driven anomaly detection customized to CPS/IoT environments. In addition, operational hurdles, interaction with open innovations, real-time deployment, and secure edge-cloud integration are highlighted. By analyzing recent developments and identifying research gaps, this review provides a structured roadmap for designing secure, scalable, and quantum-safe IoT-based CPS frameworks capable of withstanding next-generation cyber threats. This systematic review was performed and reported according to the PRISMA 2020 guidelines.
The exponential growth of global telecommunication networks has heightened the need for robust security frameworks to protect data transmission against evolving cyber threats.Traditional encryption techniques, such as RSA and AES, while effective, are increasingly vulnerable to advances in computational power and the impending threat posed by quantum computing.Quantum cryptography, specifically Quantum Key Distribution (QKD), presents a revolutionary approach to securing telecommunication systems by leveraging the fundamental principles of quantum mechanics.Unlike classical encryption methods, QKD guarantees data security through the use of quantum states that are inherently resistant to interception and eavesdropping due to the no-cloning theorem and Heisenberg's uncertainty principle.From a broader perspective, this paper explores the integration of quantum cryptographic protocols into existing telecommunication infrastructures, emphasizing their potential to safeguard data transmission in fiber-optic and satellite communication networks.It examines the architecture and operational mechanisms of QKD systems, detailing protocols such as BB84 and E91, and evaluates their effectiveness in countering both classical and quantum-enabled cyber-attacks.Additionally, the study delves into the challenges of large-scale deployment, including key distribution range limitations, hardware requirements, and the need for quantum repeaters to support long-distance secure communication.Narrowing the focus, case studies on the implementation of quantum cryptography in 5G networks and global telecommunication hubs are analysed, highlighting their role in enhancing network resilience and ensuring end-to-end encryption.The paper concludes with strategic recommendations for policy development, international standardization, and future research directions to facilitate the widespread adoption of quantum cryptography in the telecommunications sector.