Quantum key pool construction and key distribution scheme in multi-domain QKD optical networks (QKD-ON)

Wang, Qingping; Yu, Xiaosong; Zhu, Qingcheng; Zhao, Yongli; Zhang, Jie

doi:10.1117/12.2591316

Cited by 9 publications

(6 citation statements)

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“…A modified USNET network is selected as the network topology in this experiment, as shown in Figure 6 . There are 24 nodes and 27 edges in this network topology [ 32 ]. The numbers on each edge represent the length of the optical fiber link (in km).…”

Section: Simulation Results and Analysismentioning

confidence: 99%

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An Efficient Routing Protocol for Quantum Key Distribution Networks

Yao

Wang

et al. 2022

Entropy

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Quantum key distribution (QKD) can provide point-to-point information-theoretic secure key services for two connected users. In fact, the development of QKD networks needs more focus from the scientific community in order to broaden the service scale of QKD technology to deliver end-to-end secure key services. Of course, some recent efforts have been made to develop secure communication protocols based on QKD. However, due to the limited key generation capability of QKD devices, high quantum secure key utilization is the major concern for QKD networks. Since traditional routing techniques do not account for the state of quantum secure keys on links, applying them in QKD networks directly will result in underutilization of quantum secure keys. Therefore, an efficient routing protocol for QKD networks, especially for large-scale QKD networks, is desperately needed. In this study, an efficient routing protocol based on optimized link-state routing, namely QOLSR, is proposed for QKD networks. QOLSR considerably improves quantum key utilization in QKD networks through link-state awareness and path optimization. Simulation results demonstrate the validity and efficiency of the proposed QOLSR routing protocol. Most importantly, with the growth of communication traffic, the benefit becomes even more apparent.

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Section: Simulation Results and Analysismentioning

confidence: 99%

“… Topology of the USNET network [ 32 ]. The numbers on each edge represent the length of the optical fiber link (in km).…”

Section: Figurementioning

confidence: 99%

An Efficient Routing Protocol for Quantum Key Distribution Networks

Yao

Wang

et al. 2022

Entropy

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“…Implementing a QKD network requires a dedicated quantum channel, and due to its relatively low key-generation rate and the limitation of generating only one pair of keys at a time, it may not be well-suited for large-scale networks or systems. To address this issue, some researchers propose utilizing the concept of a quantum key pool (QKP) [186] to enable secure and efficient key management. The QKP is a collection of pregenerated keys shared among users to ensure secure communication.…”

Section: B11 Qkd-based Hybrid Quantum Blockchainsmentioning

confidence: 99%

A Survey and Comparison of Post-Quantum and Quantum Blockchains

Yang,

Alfauri,

Farkiani

et al. 2024

IEEE Commun. Surv. Tutorials

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Blockchains have gained substantial attention from academia and industry for their ability to facilitate decentralized trust and communications. However, the rapid progress of quantum computing poses a significant threat to the security of existing blockchain technologies. Notably, the emergence of Shor's and Grover's algorithms raises concerns regarding the compromise of the cryptographic systems underlying blockchains. Consequently, it is essential to develop methods that reinforce blockchain technology against quantum attacks. In response to this challenge, two distinct approaches have been proposed. The first approach involves post-quantum blockchains, which aim to utilize classical cryptographic algorithms resilient to quantum attacks. The second approach explores quantum blockchains, which leverage the power of quantum computers and networks to rebuild the foundations of blockchains. This paper aims to provide a comprehensive overview and comparison of post-quantum and quantum blockchains while exploring open questions and remaining challenges in these domains. It offers an in-depth introduction, examines differences in blockchain structure, security, privacy, and other key factors, and concludes by discussing current research trends.

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“…US-NET network is selected as the network topology in this experiment, as shown in Figure 4. There are 24 nodes and 43 edges in this network topology [25]. The numbers on each edge represent the length of the optical fiber link (in km).…”

Section: Comparative Study Of Aodv Dsdv and Olsrmentioning

confidence: 99%

An Efficient Routing Protocol for Quantum Key Distribution Networks

Yao,

Wang,

et al. 2022

Preprint

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Quantum key distribution (QKD) can provide point-to-point information-theoretic secure key services for two connected users. To broaden the service scale of QKD technology, the research of QKD networks that can deliver end-to-end secure key services for more users is crucial. Due to the limited key generation capability of QKD devices, high quantum secure key utilization is the major concern for QKD networks. Since traditional routing techniques do not account the state of quantum secure keys on links, applying them in QKD networks directly will result in the underutilization of quantum secure keys. Therefore, a better routing protocol for QKD networks, especially for large-scale QKD networks, is desperately needed. In this study, an efficient routing protocol based on Optimized Link State Routing (OLSR), i.e. QOLSR is proposed for QKD networks. QOLSR can considerably improve quantum key utilization in QKD networks by designing a link-state awareness mechanism and an optimal path selection algorithm. Simulation results demonstrate the validity and efficiency of the proposed routing protocol QOLSR. Most importantly, with the growth of communication traffic, the benefit becomes even more apparent.

show abstract

Quantum key pool construction and key distribution scheme in multi-domain QKD optical networks (QKD-ON)

Cited by 9 publications

References 0 publications

An Efficient Routing Protocol for Quantum Key Distribution Networks

An Efficient Routing Protocol for Quantum Key Distribution Networks

A Survey and Comparison of Post-Quantum and Quantum Blockchains

An Efficient Routing Protocol for Quantum Key Distribution Networks

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