Related papers: Implementation security in quantum key distribution

Related papers

Post-Quantum Cryptography from Quantum Stabilizer Decoding [40.84312119358882]
Post-quantum cryptography currently rests on a small number of hardness assumptions.<n>We argue that decoding random quantum stabilizer codes is an excellent candidate.<n>We prove that the average-case hardness of quantum stabilizer decoding implies the core primitives of classical Cryptomania.
arXiv Detail & Related papers (2026-03-19T16:35:31Z)
Quantum Key Distribution with Imperfections: Recent Advances in Security Proofs [0.0]
Quantum Key Distribution (QKD) can enable two spatially separated parties to establish an information-theoretically secure encryption.<n>Security proofs robust against a wide range of eavesdropping strategies have established the theoretical soundness of several QKD protocols.<n>Most proofs are based on idealized models of the physical systems involved in such protocols and often include assumptions that are not satisfied in practical implementations.
arXiv Detail & Related papers (2026-02-04T21:16:33Z)
An introductory review of the theory of continuous-variable quantum key distribution: Fundamentals, protocols, and security [35.18016233072556]
Continuous-variable quantum key distribution (CV-QKD) has emerged as a promising approach for secure quantum communication.<n>CV-QKD offers advantages such as high key generation rates, compatibility with standard telecommunication infrastructure, and potential for integration on photonic chips.<n>This review provides an accessible introduction to the theory of CV-QKD, aimed at researchers entering this rapidly developing field.
arXiv Detail & Related papers (2025-12-01T15:03:19Z)
Quantum Key Distribution: Bridging Theoretical Security Proofs, Practical Attacks, and Error Correction for Quantum-Augmented Networks [0.0]
Quantum Key Distribution (QKD) is revolutionizing cryptography by promising information-theoretic security through the immutable laws of quantum mechanics.<n>Yet, the challenge of transforming idealized security models into practical, resilient systems remains a pressing issue.<n>This review critically dissects and synthesizes the latest advancements in QKD protocols and their security vulnerabilities.
arXiv Detail & Related papers (2025-11-25T18:31:02Z)
Towards Global Quantum Key Distribution [47.07173095566302]
Quantum Key Distribution (QKD) supports the negotiation and sharing of private keys with unconditional security between authorized parties.<n>As QKD expands its reach globally, it encounters challenges such as performance limitations, cost, and practical security concerns.<n>In this review, we provide an overview of QKD implementations, with a focus on protocols, devices, and quantum channels.
arXiv Detail & Related papers (2025-11-14T06:04:48Z)
Secure quantum key distribution against correlated leakage source [20.01403427477703]
Quantum key distribution (QKD) provides information theoretic security based on quantum mechanics.<n>Among various source loopholes, correlations between transmitted pulses pose a significant yet underexplored security risk.<n>We propose a security analysis framework for QKD under correlations, enabling finite-key analysis for the first time.
arXiv Detail & Related papers (2025-07-15T12:23:24Z)
Integration of quantum random number generators with post-quantum cryptography algorithms [36.136619420474766]
Post-Quantum Cryptography (PQC) has become a potential solution to prolong the life of existing Public Key Infrastructure (PKI) systems.<n>PQC protocols depend on high-quality randomness for key generation and encapsulation procedures.<n>We demonstrate a proof-of-concept enabling the incorporation of Quantum Random Number Generation (QRNG) devices within communication networks using PQC-based Transport Layer Security (TLS)
arXiv Detail & Related papers (2025-07-01T10:56:39Z)
A Critical Analysis of Deployed Use Cases for Quantum Key Distribution and Comparison with Post-Quantum Cryptography [0.4494058019353401]
Quantum Key Distribution (QKD) is being discussed as a technology to safeguard communication in a future where quantum computers compromise traditional public-key cryptosystems. We conduct a comprehensive security evaluation of QKD-based solutions, focusing on real-world use cases sourced from academic literature and industry reports.
arXiv Detail & Related papers (2025-02-06T12:11:14Z)
High-Fidelity Coherent-One-Way QKD Simulation Framework for 6G Networks: Bridging Theory and Reality [105.73011353120471]
Quantum key distribution (QKD) has been emerged as a promising solution for guaranteeing information-theoretic security. Due to the considerable high-cost of QKD equipment, a lack of QKD communication system design tools is challenging. This paper introduces a QKD communication system design tool.
arXiv Detail & Related papers (2025-01-21T11:03:59Z)
Practical hybrid PQC-QKD protocols with enhanced security and performance [44.8840598334124]
We develop hybrid protocols by which QKD and PQC inter-operate within a joint quantum-classical network. In particular, we consider different hybrid designs that may offer enhanced speed and/or security over the individual performance of either approach.
arXiv Detail & Related papers (2024-11-02T00:02:01Z)
Towards efficient and secure quantum-classical communication networks [47.27205216718476]
There are two primary approaches to achieving quantum-resistant security: quantum key distribution (QKD) and post-quantum cryptography (PQC) We introduce the pros and cons of these protocols and explore how they can be combined to achieve a higher level of security and/or improved performance in key distribution. We hope our discussion inspires further research into the design of hybrid cryptographic protocols for quantum-classical communication networks.
arXiv Detail & Related papers (2024-11-01T23:36:19Z)
Quantum-Secured Data Centre Interconnect in a field environment [38.4938584033229]
Quantum key distribution (QKD) is an established quantum technology at a high readiness level. In this article, we present the successful implementation of a QKD field trial within a commercial data centre environment. The achieved average secret key rate of 2.392 kbps and an average quantum bit error rate of less than 2% demonstrate the commercial feasibility of QKD in real-world scenarios.
arXiv Detail & Related papers (2024-10-14T08:05:25Z)
Empirical Risk-aware Machine Learning on Trojan-Horse Detection for Trusted Quantum Key Distribution Networks [31.857236131842843]
Quantum key distribution (QKD) is a cryptographic technique that offers high levels of data security during transmission. The existence of a gap between theoretical concepts and practical implementation has raised concerns about the trustworthiness of QKD networks. We propose the implementation of risk-aware machine learning techniques that present risk analysis for Trojan-horse attacks over the time-variant quantum channel.
arXiv Detail & Related papers (2024-01-26T03:36:13Z)
Improved security bounds against the Trojan-Horse attack in decoy-state quantum key distribution [9.817648279997027]
In a quantum Trojan-horse attack (THA), eavesdroppers learn encoded information by injecting bright light into encoded or decoded devices of quantum key distribution (QKD) systems. Here, we present a numerical method for achieving improved security bound for a decoy-state QKD system under THAs.
arXiv Detail & Related papers (2023-12-24T04:07:34Z)
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)
Finite-Key Analysis for Coherent One-Way Quantum Key Distribution [18.15943439545963]
Coherent-one-way (COW) quantum key distribution (QKD) is a significant communication protocol that has been implemented experimentally and deployed in practical products. Existing security analyses of COW-QKD either provide a short transmission distance or lack immunity against coherent attacks in the finite-key regime. We present a tight finite-key framework for a variant of COW-QKD, which has been proven to extend the secure transmission distance in the case.
arXiv Detail & Related papers (2023-09-28T03:32:06Z)
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)
Advances in device-independent quantum key distribution [8.155166479336625]
Device-independent quantum key distribution (DI-QKD) provides the gold standard for secure key exchange. Recent theoretical and experimental efforts have led to the first proof-of-principle DI-QKD implementations.
arXiv Detail & Related papers (2022-08-26T18:55:40Z)
Secure quantum key distribution with a subset of malicious devices [0.0]
Malicious manipulation of quantum key distribution (QKD) hardware is a serious threat to its security. One possible approach to re-establish the security of QKD is to use a redundant number of devices. We introduce an efficient distributed QKD post-processing protocol and prove its security in a variety of corruption models of the possibly malicious devices.
arXiv Detail & Related papers (2020-06-25T12:29:06Z)
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)
Quantum key distribution with correlated sources [1.7499351967216341]
In theory, quantum key distribution (QKD) offers information-theoretic security. In practice, however, it does not due to discrepancies between the assumptions used in the security proofs and the behaviour of the real apparatuses. Here, we close this gap by introducing a simple yet general method to prove the security of QKD with arbitrarily long-range pulse correlations.
arXiv Detail & Related papers (2019-08-22T09:05:17Z)

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