Quantum cryptography has the potential to secure the infrastructures that are vulnerable to various attacks, like classical attacks, including quantum-related attacks. Therefore, quantum cryptography seems to be a promising technology for the future secure online infrastructures and applications, like blockchain-based frameworks. In this paper, we propose a generic quantum blockchain-envisioned security framework for an Internet of Things (IoT) environment. We then discuss some potential applications of the proposed framework. We also highlight the security advantages of quantum cryptography-based systems. We explain the working of blockchain, applications of blockchain, types of blockchain, the structure of blockchain, the structure of blockchain in a classical blockchain, and the structure of a block in a quantum blockchain context. Next, the adverse effects of quantum computing on the security of blockchain-based frameworks are highlighted. Furthermore, the comparisons of quantum cryptography-based security schemes, like quantum key distribution, quantum digital signature, and quantum hashing schemes, are provided. Finally, some future research directions related to the designed generic quantum blockchain-envisioned security framework for IoT are provided.
Quantum cryptography has the potential to secure the infrastructures that are vulnerable to various attacks, like classical attacks, including quantum-related attacks. Therefore, quantum cryptography seems to be a promising technology for the future secure online infrastructures and applications, like blockchain-based frameworks. In this paper, we propose a generic quantum blockchain-envisioned security framework for an Internet of Things (IoT) environment. We then discuss some potential applications of the proposed framework. We also highlight the security advantages of quantum cryptography-based systems. We explain the working of blockchain, applications of blockchain, types of blockchain, the structure of blockchain, the structure of blockchain in a classical blockchain, and the structure of a block in a quantum blockchain context. Next, the adverse effects of quantum computing on the security of blockchain-based frameworks are highlighted. Furthermore, the comparisons of quantum cryptography-based security schemes, like quantum key distribution, quantum digital signature, and quantum hashing schemes, are provided. Finally, some future research directions related to the designed generic quantum blockchain-envisioned security framework for IoT are provided.
The fast growth of the Internet of Things (IoT) has posed considerable problems regarding the security, scalability, and effective co-ordination of resources between interdependent devices. The conventional centralized solutions have failed to manage the active and decentralized nature of IoT environments. Blockchain technology also proposes a secure and decentralized model of data management, but it is based on classical cryptography methods that are susceptible to new attacks by quantum computers. The need to develop quantum-resistant security mechanisms is noted by the development of quantum algorithms by Peter Shor and Lov Grover. The present paper introduces a proposal of Adaptive Quantum Blockchain based on the Framework of Secure IoT Resource Coordination which combines quantum cryptography, blockchain technology, and adaptive optimization methods. The suggested system is based on quantum-secure encryption techniques to improve the protection of data, whereas blockchain provides decentralization and transparency. Moreover, adaptive algorithms allow allocating resources dynamically and effectively manage the IoT networks. The architecture will enhance security, scalability, and performance in complicated IoT settings. The suggested solution offers a solid solution to next generation intelligent and secure distributed systems.
Amid breakthroughs in quantum computing, blockchain systems are experiencing a dual-track evolution characterized by threats from quantum attacks and empowerment through quantum technologies. Traditional blockchain architectures, which rely on public-private key cryptography and hash functions, face systemic risks to core functions such as transaction integrity verification and consensus security when exposed to quantum attacks. This paper systematically analyzes and compares two distinct technical approaches in the field of quantum-secure blockchain: post-quantum blockchain and quantum blockchain. The former enhances existing systems by integrating post-quantum cryptographic algorithms to resist quantum threats, aiming for a smooth transition from current architectures. The latter reconstructs distributed ledger technology based on quantum information properties such as entanglement, forming novel architectures involving quantum key distribution networks, quantum digital signatures, and quantum consensus algorithms. The feasibility and development potential of these approaches are examined in application scenarios such as industrial IoT. A comparative analysis is conducted on their technical constraints and implementation challenges from the perspectives of transaction efficiency, security model validation, and standardization maturity. This lays a foundation for future empirical research. Finally, potential development paths are discussed, and targeted research directions such as diversified migration and dynamic hybrid strategies are proposed to guide further studies.
This paper delves into the crucial challenge of safeguarding data sensitivity and preventing security breaches, which can result in substantial losses, including significant financial costs and potential loss of lives. Notably, the United States faces the highest financial burden, with data breaches costing approximately USD 5.09 million. With the proliferation of Internet of Things (IoT) devices, enormous volumes of data are collected from diverse sources. However, the inherent limitations in computational power and memory of IoT devices render them susceptible targets for malicious attacks. This study focuses on fortifying the security of multimedia data, encompassing audio, video, and images, obtained from IoT devices. Cutting-edge technologies such as blockchain and quantum cryptography are explored as promising avenues to bolster multimedia security and preserve privacy. Quantum Key Distribution (QKD) emerges as an alternative to classical encryption and key distribution methods, offering heightened data security. Simultaneously, blockchain leverages hash functions to augment the overall security posture. By harnessing the principles of quantum mechanics, QKD facilitates secure key exchange between involved parties for data encryption and decryption. Additionally, the paper introduces innovative methodologies to enhance the security, privacy, and anonymity of IoT devices.
The rapid convergence of sixth-generation (6G) networks and the Internet of Things (IoT) offers enormous potential for ultra-reliable, low-latency, and massive device connectivity. However, this integration also raises security and privacy concerns, particularly in light of new threats from quantum computing that could undermine traditional cryptography. The architecture of quantum-safe IoT networks that can withstand post-quantum security threats is thoroughly discussed in this review. It addresses the challenges related to how to use blockchain technology to provide decentralized trust as well as secure transactions, how to use post-quantum cryptographic algorithms to protect data confidentiality, and the best way to use a trust management architecture to improve identity verification, authorization, and authentication in the diverse IoT environment. The paper then examines scalability considerations, resource constraints, and interoperability problems that impact safe IoT deployments in the 6G era. This work serves as a roadmap for researchers and practitioners who aim to create robust and future IoT infrastructure and then maintain their security in a post-quantum world by integrating recent research patterns, solution development, and considerations related to real-world implementation.
The rapid deployment of Internet of Things (IoT) devices across critical infrastructure’s sectors such as healthcare, transportation, and smart cities brings unprecedented security challenges; particularly as quantum computing threatens the classical cryptography. This systematic review analyzes IoT security in relation to post-quantum cryptography (PQC), highlighting vulnerabilities, evolving threat, and cryptographic countermeasures. Using the PRISMA 2020 protocol, our work employed a rigorous and reproducible search strategy, where the initial Boolean query, ((“IoT” OR “Internet of Things”) AND (“Cryptography” OR “Encryption Scheme”) AND “Quantum”), was developed and effectively customized for nine reputable databases to maximize the coverage. From an initial pool of 5,151 publications dated between 2020 and February 12, 2025, a content-based screening was conducted at the title, abstract, and full-text levels. This meticulous filtering resulted in a final corpus of 161 studies deemed relevant for in-depth analysis and synthesis. Then, we categorize and analyze PQC algorithms by vulnerabilities, suitability for resource-constrained IoT environments, performance evaluation, scalability, and quantum resilience. We also identify key limitations in implementations of current cryptographic schemes, including issues in key management and authentication; and outline major challenges such as resource constraints of IoT devices, environmental noise, quantum reversible computing, security vulnerabilities, quantum hardware constraints, and complexities in integration. To counter these threats, we propose a framework of PQC countermeasures and illustrated by a hypothetical case study of PQC adoption in a real-world IoT system. Finally, we propose future research directions in lightweight PQC, hybrid frameworks, improved key management and distribution, addressing quantum distance matters, countering quantum threats, and standardization for IoT environments.
The resource limitations of IoT nodes and the vulnerability of wireless channels to cyberattacks and snooping, the quick spread of Internet of Things (IoT) devices in wireless surroundings has created serious challenges to data security and privacy. The development of quantum computing, which can meritoriously crack classical encryption, is posing a growing threat to recognized cryptographic techniques like RSA and ECC. By applying concepts from quantum mechanics like predicament cloning, quantum cryptography, in particular Quantum Key Distribution (QKD), provides tentatively unbreakable security. In order to integrate lightweight quantum key exchange with traditional IoT communication protocols, this paper proposes a comprehensive Quantum Cryptography Framework (QCF) exactly designed for Wireless IoT networks. The framework is made to preserve energy efficiency while certifying forward secrecy, confidentiality, integrity, and authentication. A performance evaluation in terms of latency, throughput, and resistance to quantum attacks supports our discussion of the architecture, working mechanism, and implementation deliberations. The findings show that, when compared to traditional encryption methods, the suggested QCF greatly improves the security of wireless IoT systems, certifying resilience against oppositional models of the future.