Quantum random number generation with uncharacterized laser and sunlight

Li, Yu-Huai; Han, Xuan; Cao, Yuan; Yuan, Xiao; Li, Zhengping; Guan, Jian-Yu; Yin, Juan; Zhang, Qiang; Ma, Xiongfeng; Peng, Cheng-Zhi; Pan, Jian-Wei

doi:10.1038/s41534-019-0208-1

Cited by 35 publications

(15 citation statements)

References 32 publications

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“…Unfortunately, since an adversary (Eve) can emit arbitrary signals into detectors, the detection component is more vulnerable to quantum hacking attacks than the source [31]. To guarantee the security of detection, detection devices should be carefully characterized to evaluate device imperfections [32,33]. However, detector blinding attacks [34][35][36], the most powerful attack targeting detectors, have not yet been efficiently solved.…”

Section: Qrngsmentioning

confidence: 99%

Source-independent quantum random number generator against tailored detector blinding attacks

Liu¹,

Lu²,

Fu³

et al. 2022

Preprint

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Randomness, mainly in the form of random numbers, is the fundamental prerequisite for the security of many cryptographic tasks. Quantum randomness can be extracted even if adversaries are fully aware of the protocol and even control the randomness source. However, an adversary can further manipulate the randomness via detector blinding attacks, which are hacking attacks suffered by protocols with trusted detectors. Here, by treating no-click events as valid error events, we propose a quantum random number generation protocol that can simultaneously address source vulnerability and ferocious detector blinding attacks. The method can be extended to high-dimensional random number generation. We experimentally demonstrate the ability of our protocol to generate random numbers for two-dimensional measurement with a generation speed of 0.515 Mbps, which is two orders of magnitude higher than that of device-independent protocols that can address both issues of imperfect sources and imperfect detectors.

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Section: Qrngsmentioning

confidence: 99%

Source-independent quantum random number generator against tailored detector blinding attacks

Liu¹,

Lu²,

Fu³

et al. 2022

Preprint

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show abstract

“…Note that when the using memory and the not using memory cases exploit the generalized and flip coin operators ( 6) and ( 7), the gammas ( 22) and ( 23) employ the maximum probabilities ( 9) and (10)…”

Section: B the Using Memory And Not Using Memory Casesmentioning

confidence: 99%

Quantum Walk Random Number Generation: Memory-based Models

Bae¹

2022

Preprint

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The semi-source independent quantum walk random number generator (SI-QW-QRNG) is a cryptographic protocol that extracts a string of true random bits from a quantum random walk with an adversary controls a randomness source, but the dimension of the system is known. This paper analyzes SI-QW-QRNG protocols with a memory-based quantum walk state. The new protocol utilizes a generalized coin operator with various parameters to optimize the randomness of the quantum walk state. We focus on evaluations of the protocols in multiple scenarios and walk configurations. Moreover, we show some interesting behavior of the system depending on the size of the memory space and the number of quantum coins.

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“…Furthermore, they are highly practical, leading to Gbps implementations [28]. Finally, by not trusting the source, several fascinating possibilities are open, including the use of sunlight as the source [29]. For a general survey of QRNG protocols and their security models, the reader is referred to [30].…”

Section: Application To Quantum Random Number Generatorsmentioning

confidence: 99%

Quantum Sampling for Optimistic Finite Key Rates in High Dimensional Quantum Cryptography

Yao¹,

Krawec²,

Zhu³

2020

Preprint

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It has been shown recently that the framework of quantum sampling, as introduced by Bouman and Fehr, can lead to new entropic uncertainty relations highly applicable to finite-key cryptographic analyses. Here we revisit these so-called sampling-based entropic uncertainty relations, deriving newer, more powerful, relations and applying them to source-independent quantum random number generators and high-dimensional quantum key distribution protocols. Along the way, we prove several interesting results in the asymptotic case for our entropic uncertainty relations. These sampling-based approaches to entropic uncertainty, and their application to quantum cryptography, hold great potential for deriving proofs of security for quantum cryptographic systems, and the approaches we use here may be applicable to an even wider range of scenarios.

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Quantum random number generation with uncharacterized laser and sunlight

Cited by 35 publications

References 32 publications

Source-independent quantum random number generator against tailored detector blinding attacks

Source-independent quantum random number generator against tailored detector blinding attacks

Quantum Walk Random Number Generation: Memory-based Models

Quantum Sampling for Optimistic Finite Key Rates in High Dimensional Quantum Cryptography

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