Relaxing Trust Assumptions on Quantum Key Distribution Networks
- URL: http://arxiv.org/abs/2402.13136v1
- Date: Tue, 20 Feb 2024 16:51:30 GMT
- Title: Relaxing Trust Assumptions on Quantum Key Distribution Networks
- Authors: Nilesh Vyas, Paulo Mendes
- Abstract summary: We explore the possibility to securely relay a secret in a QKD network by relaxing the trust assumptions (if not completely) on the relay.
We propose multiple constructions of the QKD key management system based on the different trust levels.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum security over long distances with un- trusted relays is largely
unfounded and is still an open ques- tion for active research. Nevertheless,
quantum networks based on trusted relays are being built across the globe.
However, standard QKD network architecture implores a complete trust
requirement on QKD relays, which is too demanding and limits the use cases for
QKD networks. In this work, we explore the possibility to securely relay a
secret in a QKD network by relaxing the trust assumptions (if not completely)
on the relay. We characterize QKD relays with different trust levels, namely,
Full Access Trust (FAT), Partial Access Trust (PAT), and No Access Trust (NAT).
As the name suggests, each level defines the degree with which a relay is
required to be trusted with the secret provided by the key management system
for end- to-end communication. We then review and propose multiple
constructions of the QKD key management system based on the different trust
levels. Main contribution of the paper is realized by evaluating key management
systems with no access trust level. In principle, we review key management with
centralized topology and propose a new decentralized key management system.
These different topologies provide various advantages based on the QKD network
requirements, allowing an operational flexibility in the architecture. We
believe this work presents a new perspective to the open problem of providing a
confiding and a practical solution for future long range secure communications
Related papers
- Quantum Key Distribution Networks -- Key Management: A Survey [1.3611372330340248]
Quantum Key Distribution (QKD) is a promising technology that provides an Information-Theoretically Secure (ITS) solution to the secret-key agreement problem between two remote parties.
QKD networks based on trusted repeaters are built to provide service to a larger number of parties at arbitrary distances.
arXiv Detail & Related papers (2024-08-08T16:42:45Z) - A Practical Multi-Protocol Collaborative QKD Networking Scheme [7.328751101180386]
Quantum Key Distribution (QKD) networks can be classified into measurement-device-dependent network and measurement-device-independent network.
The communication capability of measurement-device-independent networks has a degradation compared to measurement-device-dependent networks.
A novel Multi-Protocol Collaborative networking cell is proposed in this paper.
arXiv Detail & Related papers (2023-12-12T12:08:35Z) - The Evolution of Quantum Secure Direct Communication: On the Road to the
Qinternet [49.8449750761258]
Quantum secure direct communication (QSDC) is provably secure and overcomes the threat of quantum computing.
We will detail the associated point-to-point communication protocols and show how information is protected and transmitted.
arXiv Detail & Related papers (2023-11-23T12:40:47Z) - Practical quantum secure direct communication with squeezed states [55.41644538483948]
We report the first table-top experimental demonstration of a CV-QSDC system and assess its security.
This realization paves the way into future threat-less quantum metropolitan networks, compatible with coexisting advanced wavelength division multiplexing (WDM) systems.
arXiv Detail & Related papers (2023-06-25T19:23:42Z) - KGTrust: Evaluating Trustworthiness of SIoT via Knowledge Enhanced Graph
Neural Networks [63.531790269009704]
Social Internet of Things (SIoT) is a promising and emerging paradigm that injects the notion of social networking into smart objects (i.e., things)
Due to the risks and uncertainty, a crucial and urgent problem to be settled is establishing reliable relationships within SIoT, that is, trust evaluation.
We propose a novel knowledge-enhanced graph neural network (KGTrust) for better trust evaluation in SIoT.
arXiv Detail & Related papers (2023-02-22T14:24:45Z) - Distributed Information-theoretical Secure Protocols for Quantum Key
Distribution Networks against Malicious Nodes [15.200383830307915]
Quantum key distribution (QKD) networks are expected to enable information-theoretical secure (ITS) communication over a large-scale network.
Current research on QKD networks primarily addresses passive attacks conducted by malicious nodes such as eavesdropping.
We suggest a novel paradigm, inspired by distributed systems, to address the active attack by collaborate malicious nodes in QKD networks.
arXiv Detail & Related papers (2023-02-14T11:53:22Z) - An Information-theoretical Secured Byzantine-fault Tolerance Consensus
in Quantum Key Distribution Network [13.007691543559666]
Quantum key distribution (QKD) networks are expected to provide information-theoretical secured (ITS) communication over long distances.
We propose an ITS Byzantine-fault tolerance (BFT) QKD network scheme to achieve end-to-end key distribution based on point-to-point QKD links.
We theoretically analyze proposed ITSBFT-QKD network scheme from four aspects: QKD key distribution security, temporary signature security, consensus security, and leader election fairness.
arXiv Detail & Related papers (2022-04-21T01:04:39Z) - Where Does Trust Break Down? A Quantitative Trust Analysis of Deep
Neural Networks via Trust Matrix and Conditional Trust Densities [94.65749466106664]
We introduce the concept of trust matrix, a novel trust quantification strategy.
A trust matrix defines the expected question-answer trust for a given actor-oracle answer scenario.
We further extend the concept of trust densities with the notion of conditional trust densities.
arXiv Detail & Related papers (2020-09-30T14:33:43Z) - Open-destination measurement-device-independent quantum key distribution
network [10.480419551094071]
Quantum key distribution (QKD) networks hold promise for sharing secure randomness over multi-partities.
Here, we propose an open-destination measurement-device-independent QKD network.
The scheme enjoys security against untrusted relays and all detector side-channel attacks.
arXiv Detail & Related papers (2020-09-28T16:05:32Z) - How Much Can We Really Trust You? Towards Simple, Interpretable Trust
Quantification Metrics for Deep Neural Networks [94.65749466106664]
We conduct a thought experiment and explore two key questions about trust in relation to confidence.
We introduce a suite of metrics for assessing the overall trustworthiness of deep neural networks based on their behaviour when answering a set of questions.
The proposed metrics are by no means perfect, but the hope is to push the conversation towards better metrics.
arXiv Detail & Related papers (2020-09-12T17:37:36Z) - Backflash Light as a Security Vulnerability in Quantum Key Distribution
Systems [77.34726150561087]
We review the security vulnerabilities of quantum key distribution (QKD) systems.
We mainly focus on a particular effect known as backflash light, which can be a source of eavesdropping attacks.
arXiv Detail & Related papers (2020-03-23T18:23:12Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.