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Computers, materials & continua/Computers, materials & continua (Print)

Hash-Based Signature Authentication for Scalable and Security-Consistent QKD Post-Processing

Chaokun Wang, Sijiang Xie, Yalong Yan, Hong Zhao

Published Jan 1, 2026• 0 citations
Publisher

Abstract

Quantum Key Distribution (QKD) ensures secure key establishment through the principles of quantum mechanics; however, its effectiveness in practice hinges on dependable identity verification via classical channels during the ... | Find, read and cite all the research you need on Tech Science Press
DOI
10.32604/cmc.2026.077994

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QKD occurs over two communication channels: classical and quantum. While the quantum channel is somewhat secure by quantum principles, the classical channel need to be authenticated using cryptographic algorithms. Unfortunately, the authentication algorithms and the methods suggested are not taking into consideration the problems practical implementations are facing. Moreover, there are areas which has not been discussed by the literature such as the quantum application layer in communication over classical channel. This study identifies the hurdles practical implementations of QKD are facing and proposes a solution which take into consideration these needs. Moreover, it suggests new protocols and approaches suitable for QKD post processing authentication.
Quantum Key Distribution (QKD) represents a revolutionary mechanism ensuring secure communication amidst the quantum computing era. With the evolving threat landscape due to quantum computing advancements, there’s an urgent need for a comprehensive review and assessment of existing QKD protocols and implementations. This paper systematically explores the QKD landscape, focusing on protocols, security models, practical implementations, and recent progress. We commence by elucidating the foundational principles of QKD and its pivotal role in establishing verifiably secure communication channels. Based on their underlying principles, we then categorize and scrutinize various QKD protocols, like BB84, BBM92, CV-QKD, etc. We delve into the security models utilized in QKD protocols, evaluating their strengths and limitations. Additionally, we evaluate practical QKD system implementations encompassing both fibre-based and free-space setups. We shed light on crucial technological challenges, advancements, and recent developments in quantum repeaters, memories, and network architectures aiming to enhance the reach and scalability of QKD systems. This systematic review provides insights into the current state of QKD technology, identifies research gaps, and discusses potential pathways for future progress. Our analysis is a vital resource for researchers and practitioners who are engaged in quantum cryptography and secure communication protocols.
This Research Focuses on,the advent of quantum computing poses significant risks to classical encryption methods, rendering many existing cryptographic protocols obsolete. Quantum Key Distribution (QKD) emerges as a revolutionary solution, leveraging the principles of quantum mechanics to enable unconditionally secure communication. This research paper explores the implementation and advancements in QKD for securing networks against post-quantum threats. We analyze the challenges, practical implementations, and future prospects of integrating QKD into modern communication infrastructures. The findings highlight the critical role of QKD in ensuring resilient cybersecurity in the quantum era. We analyze the challenges, practical implementations, and future prospects of integrating QKD into modern communication infrastructures. The findings highlight the critical role of QKD in ensuring resilient cybersecurity in the quantum era.
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