Nowadays, quantum computing is evolving in computing algorithms and cryptography applications. Quantum cryptography is an ideal alternative to traditional cryptography algorithms, as it is provable and computationally secure. Quantum key distribution (QKD) is the heart of quantum cryptography, making secure key distribution. The QKD provides a promising solution for ensuring the secure transmission of electronic health records (EHRs). QKD provides information-theoretic security by utilizing the concepts of quantum physics, which makes it impervious to possible dangers from quantum computing. Numerous research projects that combine QKD with blockchain technology to improve data security and integrity have emphasized how important this capability is for safeguarding private health information. This book chapter explores the application of post-quantum cryptography in the secure transmission of EHR applied with the quantum safe blockchain network (QSBN). This chapter proposes a framework for effective key management using QKD and blockchain-based authentication, ensuring secure transmission of EHR between healthcare users and content servers through dedicated quantum channels.
Nowadays, quantum computing is evolving in computing algorithms and cryptography applications. Quantum cryptography is an ideal alternative to traditional cryptography algorithms, as it is provable and computationally secure. Quantum key distribution (QKD) is the heart of quantum cryptography, making secure key distribution. The QKD provides a promising solution for ensuring the secure transmission of electronic health records (EHRs). QKD provides information-theoretic security by utilizing the concepts of quantum physics, which makes it impervious to possible dangers from quantum computing. Numerous research projects that combine QKD with blockchain technology to improve data security and integrity have emphasized how important this capability is for safeguarding private health information. This book chapter explores the application of post-quantum cryptography in the secure transmission of EHR applied with the quantum safe blockchain network (QSBN). This chapter proposes a framework for effective key management using QKD and blockchain-based authentication, ensuring secure transmission of EHR between healthcare users and content servers through dedicated quantum channels.
The integration of blockchain technology in electronic medical records (EMRs) offers enhanced data security and integrity. However, classical blockchain systems face potential threats from quantum computing and often involve significant computation and communication costs. This paper proposes a secure framework for safeguarding EMRs using quantum blockchain technology, leveraging quantum cryptographic principles to enhance security. The proposed framework employs Quantum Key Distribution (QKD) and post-quantum cryptographic algorithms to resist quantum attacks, ensuring robust protection of sensitive data. By optimizing consensus mechanisms with quantum algorithms, with this research work, a 30% reduction in computation costs and a 25% decrease in communication overhead is achieved compared to traditional blockchain systems. These improvements are quantified through simulation results, demonstrating the framework’s efficiency and practicality. The proposed solution ensures higher security, integrity, and cost-effectiveness for managing EMRs in the face of emerging quantum threats.
The healthcare sector increasingly relies on Cyber-Physical Systems (CPS) that integrate medical devices, networks, and digital records to deliver critical patient care. Protecting sensitive medical data within these interconnected systems is vital due to potential privacy violations and safety risks. The initiation of quantum computing poses substantial threats to traditional cryptographic algorithms, which underpin current healthcare data security. This article examines the deployment of quantum-safe cryptographic algorithms considered to resist quantum attacks, enabling robust protection of healthcare CPS. It highlights advanced encryption methods including lattice-based, hash-based, and code-based post-quantum schemes, alongside quantum key distribution (QKD) for secure key management. The discussion includes challenges related to healthcare-specific system constraints, regulatory compliance, and integration complexity. Through adopting quantum-resistant cryptography and comprehensive key management protocols, healthcare organizations can safeguard electronic health records (EHRs), device communication, and patient data against incipient post-quantum threats, ensuring long-term data confidentiality, integrity, and system resilience.
Healthcare systems are increasingly data-driven through EHRs, telemedicine, and IoT-based medical devices. However, cyber threats, poor interoperability, and data tampering expose the vulnerabilities of centralized systems. Blockchain offers immutability and transparency, yet its traditional cryptography faces risks from quantum computing, which can compromise existing encryption. To address this, the chapter proposes a quantum-enhanced blockchain framework integrating post-quantum cryptography (PQC), quantum key distribution (QKD), and hybrid quantum-classical consensus. The model strengthens confidentiality, integrity, and availability (CIA) of healthcare data while ensuring interoperability and regulatory compliance. Key applications include secure EHR and genomic data management, automated patient consent handling, transparent drug supply chain monitoring, and protection of clinical research. The chapter also discusses ethical, technical, and regulatory challenges, offering insights into building resilient, quantum-secure healthcare ecosystems.
In digital healthcare systems, there has been an upsurge in the utilization of Electronic Health Records (EHRs) which is raising some concerns on data privacy and security, particularly following the quantum computing innovation. RSA and ECC encryption services, which are the traditional mechanisms, are expected to be rendered useless in light of quantum algorithms, like that of Shor and Grover, which can break classical cryptographic algorithms. This paper introduces a framework of quantum enhanced data security to solve these vulnerabilities, in which Post-Quantum Cryptography (PQC) and Quantum Key Distribution (QKD) are integrated. The suggested model uses the lattice-based encryption (Kyber), post-quantum digital signature (Di lithium), and QKD to secure key exchange. A comparative simulation to classical encryption approaches manifests that the model with innovative frameworks provides the high levels of resilience toward quantum penetrations, a better authentication accuracy and a slight augmentation of access durability. It indicates that the combination of PQC and QKD could be a scalable, persistent, and future-proof solution to the security of sensitive healthcare information under next-generation cyberattacks.
Background and Aims: Rising quantum hazards and flaws in conventional encryption make cloud-based healthcare data security harder. Quantum-Secure HealthChain, a new architecture using blockchain and quantum computing, improves medical data security, patient privacy, and data fidelity. Methods: To prevent quantum attacks, the proposed system uses Quantum Key Distribution (QKD) for safe cryptographic key exchange and quantum-resistant encryption. Blockchain technology secures medical records, while multi-layered encryption ensures data privacy. Quantum Biometric Authentication improves access control using quantum entanglement and biometric data. Key generation, encryption, blockchain storage, authentication, and decryption are system process steps. Experimental evaluation focuses on encryption speed, resource economy, throughput, and scalability using simulated healthcare data. Results: Experimental data demonstrate system strength and efficiency. Encryption and decryption perform consistently for 1 to 100 MB data sizes with negligible overhead. Throughput can reach 105 transactions per second under normal demand; CPU (82%) and memory (210 MB) utilization are low. Scalability studies show linear expansion lets the system handle increased data volumes and user demands without sacrificing performance. Security study confirms quantum attack, data corruption, and unauthorized access resistance. Conclusion: Quantum-Secure HealthChain offers a revolutionary method to cloud-based healthcare system security. Blockchain-quantum computing integration ensures strong authentication, safe key exchange, and quantum-resistant encryption. Its security, scalability, and efficiency make it a future-ready platform for safe medical data management, reducing quantum computing hazards.
The rapid advancement of quantum computing poses a significant threat to current cryptographic standards, particularly those securing electronic health records (EHRs) in healthcare systems.Traditional encryption methods such as RSA, ECC, and AES, while robust against classical attacks, are vulnerable to quantum algorithms like Shor's and Grover's, which can efficiently break cryptographic keys and compromise patient data integrity.As healthcare systems become increasingly interconnected through the Internet of Things (IoT) and cloud-based infrastructures, the need for quantum-resistant security mechanisms becomes paramount.Post-Quantum Cryptography (PQC) emerges as a viable solution to future-proof EHR security by employing lattice-based, hash-based, code-based, and multivariate polynomial cryptographic techniques that remain resistant to quantum attacks.This paper explores the implications of quantum computing on healthcare cybersecurity, emphasizing the vulnerabilities of existing encryption protocols and the necessity of transitioning toward PQC frameworks.Furthermore, we examine the integration of PQC within healthcare infrastructures, focusing on key exchange mechanisms, digital signatures, and end-to-end encryption for secure EHR transactions.Additionally, the study highlights regulatory and compliance considerations, including the National Institute of Standards and Technology (NIST) PQC standardization efforts and the role of Zero Trust security models in mitigating quantum-era cyber risks.Case studies illustrate successful implementations of PQC in healthcare networks, demonstrating its feasibility and effectiveness in safeguarding sensitive medical information.By adopting quantum-resistant cryptographic standards, healthcare institutions can proactively defend against emerging cyber threats, ensuring data confidentiality, integrity, and long-term resilience in the face of quantum computing advancements.