This repository contains the author-archived preprint of the research paper "Lifecycle-Aware Post-Quantum Cryptography with Provenance Verification for Secure Cloud Microservices", authored by Lohit S. and Nithya S. The work addresses a critical challenge facing modern cloud systems: preparing everyday distributed applications for the emergence of powerful quantum computers. Because future quantum computing advances threaten to compromise conventional encryption standards, cloud services must transition to quantum-resistant security without interrupting ongoing operations or adding severe latency to real-time communication. To address this, the authors propose a practical framework engineered to orchestrate a smooth, structured transition to next-generation quantum-safe security. The deposited file, "2026_LAPQC_Preprint.pdf", constitutes an unabridged, full-text technical working preprint. It contains the complete architectural schematics, formal mathematical foundations, algorithmic state transitions, experimental configurations, comparative result tables, and bibliographic citations. This public record represents the authors' definitive preprint version of the research, preserved here for open scholarly dissemination, academic verification, and permanent reference. ______________________________________________________________________________________________________________________________________________________________________ **NOTICE ON SCHOLARLY PRIORITY & UNAUTHORIZED THIRD-PARTY DISSEMINATION** This deposit constitutes the authoritative, timestamped prior art record for this research, registered on September 8, 2026 under CC BY-NC-ND 4.0 (DOI: 10.5281/zenodo.22659856). Any appearance, re-hosting, or proceeding indexing of this work in third-party outlets or journals (including IJRITCC, ISSN: 2321-8169) was conducted without an executed Copyright Transfer Agreement, without author consent, and in violation of formal withdrawal notices served on September 8, 2026. Such appearances are unauthorized and under formal takedown demand. The authors retain full moral and intellectual property rights to develop, expand, and submit extended iterations of this work to standard peer-reviewed venues.
This repository contains the author-archived preprint of the research paper "Lifecycle-Aware Post-Quantum Cryptography with Provenance Verification for Secure Cloud Microservices", authored by Lohit S. and Nithya S. The work addresses a critical challenge facing modern cloud systems: preparing everyday distributed applications for the emergence of powerful quantum computers. Because future quantum computing advances threaten to compromise conventional encryption standards, cloud services must transition to quantum-resistant security without interrupting ongoing operations or adding severe latency to real-time communication. To address this, the authors propose a practical framework engineered to orchestrate a smooth, structured transition to next-generation quantum-safe security. The deposited file, "2026_LAPQC_Preprint.pdf", constitutes an unabridged, full-text technical working preprint. It contains the complete architectural schematics, formal mathematical foundations, algorithmic state transitions, experimental configurations, comparative result tables, and bibliographic citations. This public record represents the authors' definitive preprint version of the research, preserved here for open scholarly dissemination, academic verification, and permanent reference. ______________________________________________________________________________________________________________________________________________________________________ NOTICE ON SCHOLARLY PRIORITY & UNAUTHORIZED THIRD-PARTY DISSEMINATION This deposit constitutes the authoritative, timestamped prior art record for this research, registered on September 8, 2026 under CC BY-NC-ND 4.0 (DOI: 10.5281/zenodo.22659856). Any appearance, re-hosting, or proceeding indexing of this work in third-party outlets or journals (including IJRITCC, ISSN: 2321-8169) was conducted without an executed Copyright Transfer Agreement, without author consent, and in violation of formal withdrawal notices served on September 8, 2026. Such appearances are unauthorized and under formal takedown demand. The authors retain full moral and intellectual property rights to develop, expand, and submit extended iterations of this work to standard peer-reviewed venues.
The increasing reliance on cloud storage across sectors has made the protection of sensitive data a critical concern especially as advances in quantum computing threaten to break traditional public-key cryptographic systems. This growing vulnerability raises urgent questions about how to secure digital assets in a post-quantum future. To address this challenge, this study aims to design, implement, and evaluate a hybrid encryption framework that combines symmetric encryption for data confidentiality with quantum-resistant public-key algorithms for key management and digital signatures. The objective was to develop a secure and practical solution that can be readily adopted using open-source tools. The system was built in a Linux-based virtual environment using an S3-compatible object storage platform, integrated with quantum-safe cryptographic libraries, and automated through scripting. Performance testing was conducted using files ranging from 100 MB to 1 GB, with metrics such as encryption and decryption time, CPU usage, upload/download latency, and internet throughput analyzed. The results showed that while quantum-safe operations added some overhead, even large files could be securely processed in under two minutes with stable system performance and no data corruption. These findings confirm that hybrid encryption models can be deployed today without specialized hardware, offering a forward-compatible and robust approach to cloud security. This work contributes a tested and reproducible framework for early adoption of quantum-safe cryptography in real-world cloud environments.
The emergence of quantum computing marks a revolutionary turning point in the evolution of information technology and cybersecurity. While quantum technologies promise extraordinary computational capabilities capable of solving highly complex scientific and industrial problems, they simultaneously introduce unprecedented risks to the cryptographic foundations that secure today’s digital world. Cloud computing, which has become the backbone of modern digital infrastructure, is particularly vulnerable to these evolving threats. As organizations increasingly rely on cloud platforms for data storage, communication, financial transactions, healthcare systems, research, and critical infrastructure management, ensuring long-term cryptographic security has become an urgent global priority. This book, Post-Quantum Security in Cloud Computing: Challenges and Solutions, has been developed to provide a comprehensive exploration of the rapidly evolving intersection between quantum computing, cloud security, and post-quantum cryptography (PQC). The primary objective of this work is to present both foundational concepts and advanced research perspectives that help readers understand the implications of quantum threats on existing cloud ecosystems and the emerging solutions designed to mitigate them. The chapters in this book collectively examine the vulnerabilities of classical cryptographic systems against quantum algorithms such as Shor’s Algorithm and Grover’s Algorithm, which threaten widely deployed security mechanisms including RSA, Diffie–Hellman, and Elliptic Curve Cryptography. The book further introduces the theoretical and practical foundations of post-quantum cryptography, covering lattice-based, code-based, multivariate, and hash-based cryptographic schemes that are being developed as quantum-resistant alternatives. Beyond theoretical concepts, this book emphasizes practical implementation challenges in cloud environments, including scalability, performance overhead, key management, hybrid cryptographic architectures, secure identity infrastructures, and deployment strategies across distributed and multi-cloud systems. Special attention has also been given to experimental evaluations, benchmarking methodologies, and emerging research directions that will shape the future of quantum-safe cloud security. This work is intended for students, academic researchers, cybersecurity professionals, cloud architects, and policymakers who seek a structured and research-oriented understanding of post-quantum cloud security. By combining theoretical insights with practical perspectives, the book aims to serve as a valuable reference for understanding current developments and preparing for the transition toward quantum-resilient computing infrastructures. The successful completion of this book would not have been possible without the contributions of the global research community working tirelessly in the fields of cryptography, quantum computing, cloud security, and distributed systems. Their groundbreaking research and continuous innovation have inspired many of the ideas discussed throughout this work. It is our sincere hope that this book will contribute meaningfully to the ongoing efforts toward building secure, scalable, and future-ready cloud systems capable of withstanding the challenges of the quantum era.
The emergence of quantum computing is a serious threat to traditional cryptographic algorithms, making it critical to transition to post-quantum cryptography (PQC). This work proposes a holistic conceptual and analytical framework for deploying PQC in multi-cloud environments where the complexity of different infrastructure, workloads and key management schemes pose significant security and efficiency problems. The proposed framework for crypto-agility follows a layered approach, with a cryptographic abstraction layer, a policy-based orchestration engine, a centralized hardware security module (HSM) management plane, and an ongoing monitoring module to facilitate a smooth transition from classical to hybrid and fully quantum-resistant cryptographic systems. He researches identifies and critically analyzes major challenges in deploying PQC technologies in multi-cloud environments, such as inter-cloud interoperability, computational complexity, latency, key management, and regulatory and compliance considerations. The framework tackles these challenges by incorporating hybrid cryptographic protocols that blend classic cryptographic algorithms with NIST-approved PQC algorithms, namely ML-KEM (FIPS 203) and ML-DSA (FIPS 204), to maintain backward compatibility and increase security against quantum-powered adversaries. Moreover, the framework proposes dynamic policy-driven algorithm selection to implement context-sensitive cryptographic enforcement based on sensitivity labels, security threats, and regulatory considerations. An experimental framework is proposed to assess the efficiency and scalability of PQC algorithms deployed in a multi-cloud environment, including metrics such as CPU usage, memory usage, latency and throughput with different workloads. Although this research is conceptual, it draws on previous benchmarking to discuss the securityperformance trade-offs associated with PQC. The results highlight the need for centralized trust anchors, crypto-agility and hybrid deployment models to address risks from cryptographic diversity and ensure the sustainability of security operations. This study advances the research on quantum-safe cloud security by offering a systematic, scalable and policy-oriented framework for PQC deployment. It provides practical guidance for businesses, cloud architects, and security professionals on how to safeguard against quantum vulnerabilities and ensure efficient operations in distributed systems by implementing quantum-safe cryptographic infrastructures.
The accelerated advancements in quantum computing substantially threaten classical cryptographic systems, particularly those that rely on RSA, ECC, and other public key encryption methods. Particularly Shor's method shows how easily conventional cryptographic techniques might be broken; therefore quick development of quantum resistant substitutes is necessary. Rising as a potential answer with cryptographic algorithms meant to resist quantum attacks is post quantum cryptography (PQC). Nonetheless, performance trade-offs, compatibility problems, and the absence of standardized implementations make the shift to completely quantum-safe cryptographic systems very difficult. Hybrid PQC systems that combine conventional and quantum resistant cryptographic mechanisms have been suggested as a workable method for tackling these difficulties so guaranteeing security in the post quantum future. Emphasizing their security, performance, and practical implementations, this review article offers a thorough study of hybrid PQC methods. The resistance of many hybrid cryptographic models including lattice-based, code-based, and multivariate cryptographic techniques against quantum attacks is comprehensively investigated in this work methodologically, we review current PQC hybrid models, evaluate their computing efficiency, and examine security criteria grounded on recent research and standardizing initiatives like those under NIST. Our results show that hybrid PQC models create difficulties in terms of key management, computational overhead, and implementation complexity even if they improve security by reducing risks related with both conventional and quantum attacks. A comparative study shows among several hybrid systems the trade-offs in terms of encryption speed, key sizes, and resource use. Moreover showing the feasibility of PQC hybridizing in IoT, cloud computing, and block chain security are pragmatic uses of PQC hybridizing in which case appropriate protocols are needed for broad acceptance. At last, our work emphasizes the significant contribution hybrid PQC models provide in the transitional period producing a quantum secure environment. To enable basic integration into the present digital infrastructure, future research should focus on improving the efficiency of hybrid cryptosystems, optimizing key exchange mechanisms, and regulating standardization concerns. The findings of this study support the present discussion on post quantum security and provide data for academics and corporate leaders aiming for the next generation of cryptographic solutions. https://doi.org/10.5281/zenodo.17873992
The rise of cloud computing has transformed data storage and processing but introduced new vulnerabilities, especially with the impending threat of quantum computing. Traditional cryptographic methods, though currently effective, are at risk of being compromised by quantum attacks. This research aims to develop a quantum-resistant security framework for cloud environments, combining lattice-based cryptography with Quantum Key Distribution (QKD) protocols, particularly the E91 protocol, for secure key management. The framework also incorporates quantum authentication protocols to enhance user identity verification, protecting against unauthorized access and tampering. The proposed solution balances robust security with practical implementation, ensuring scalability and efficiency in real-world cloud environments. Performance evaluations indicate an encryption time of approximately 30 milliseconds, outperforming existing methods such as RSA and DES. This research contributes to the development of future-proof cryptographic standards, addressing both current security challenges and emerging quantum computing threats. By leveraging quantum mechanics, the framework strengthens cloud-based data protection, providing a resilient solution against evolving cyber risks. The results hold significant promise for advancing cloud security, laying the groundwork for next-generation encryption techniques that can withstand the threats posed by quantum computing.
The rapid advancement of quantum computing introduces unprecedented security threats to modern cloud and edge computing infrastructures. Classical public-key cryptographic algorithms such as RSA, Diffie–Hellman, and Elliptic Curve Cryptography (ECC) are fundamentally vulnerable to quantum attacks enabled by Shor’s algorithm. As a result, the confidentiality, integrity, and authenticity of data stored and processed in distributed systems are at serious risk.Post-quantum cryptography (PQC) aims to develop cryptographic algorithms that are resistant to both classical and quantum adversaries. This paper presents a comprehensive quantum-resilient cryptographic framework designed specifically for post-quantum cloud and edge computing environments. The framework integrates post-quantum cryptographic primitives, hybrid cryptographic approaches, crypto-agile architectures, and secure key management mechanisms. The proposed framework addresses performance constraints, scalability requirements, and deployment challenges in heterogeneous environments. A detailed discussion of security threats, architectural components, performance considerations, and future research directions is provided. The proposed approach enables longterm security and supports a smooth transition toward quantum-safe distributed computing systems.