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Security of classical noise-based cryptography

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Paper breakdownThe authors' claims, conditions and measurements, as JSON Signed receiptProof this review has not been altered
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Akihisa Tomita, Osamu Hirota

Quantum Physics · Submitted 15 Feb 2000

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim Theoretical and experimental analysis in terms of the secure key distribution rate shows that secure key distribution is possible even if the eavesdropper could receive more photons than the legitimate receiver, as long as the signal-to-noise-ratio (SNR) of the receiver is better than -9dB of the eavesdropper's SNR.

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arXiv IDquant-ph/0002044 (version 2)
Pith IDD4OYF46W, Pith's permanent record of this paper and its review
CitationAkihisa Tomita, Osamu Hirota. "Security of classical noise-based cryptography." arXiv:quant-ph/0002044 (2000). https://pith.science/paper/D4OYF46W
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The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,349 input tokens.

What the abstract itself states, as probabilities: claims first 0.04 · states limitation 0.92 · human participants 0.02 · controlled comparison 0.11 · randomized assignment 0.01 · states quantitative result 0.99 · compares with prior results 0.71 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v2. Results and the main claim are underlined; .

We examine security of a protocol on cryptographic key distribution via classical noise proposed by Yuen and Kim (Phys. Lett. A 241 135 (1998)). Theoretical and experimental analysis in terms of the secure key distribution rate shows that secure key distribution is possible even if the eavesdropper could receive more photons than the legitimate receiver, as long as the signal-to-noise-ratio (SNR) of the receiver is better than -9dB of the eavesdropper's SNR. Secure key distribution was demonstrated at the maximum rate of 0.04 bit per sender's bit and transmission rate of 2 Mb/s in the experiment employing conventional fiber optics. The present protocol has advantages of the efficient key distribution and the simple implementation over other quantum key distribution protocols. However, careful design and management are necessary to keep the security of the crypto-system.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 We examine security of a protocol on cryptographic key distribution via classical noise proposed by Yuen and Kim (Phys. Lett. A 241 135 (1998)). contribution 0.52 0.38 0.04 asserted 0.51
s1 Theoretical and experimental analysis in terms of the secure key distribution rate shows that secure key distribution is possible even if the eavesdropper could receive more photons than the legitimate receiver, as long as the signal-to-noise-ratio (SNR) of the receiver is better than -9dB of the eavesdropper's SNR. result 1.00 0.85 0.79 asserted 0.71
s2 Secure key distribution was demonstrated at the maximum rate of 0.04 bit per sender's bit and transmission rate of 2 Mb/s in the experiment employing conventional fiber optics. result 1.00 0.87 0.15 asserted 1.00
s3 The present protocol has advantages of the efficient key distribution and the simple implementation over other quantum key distribution protocols. interpretation 0.93 0.35 0.10 asserted 1.00
s4 However, careful design and management are necessary to keep the security of the crypto-system. limitation 0.97 0.24 0.11 asserted 0.92

What kind of paper the classifier reports this is: empirical study 0.87 · evidence from observation or experiment 0.96.

What was examined, and what was not

sources read
  • arXiv listing abstract v2
not examined
  • full text
  • figures and tables
  • references and citing sentences
  • relations to other papers
levels run
  • P abstract
not run
  • S sections
  • T body sentences
  • C citations
  • R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper
Original abstract

We examine security of a protocol on cryptographic key distribution via classical noise proposed by Yuen and Kim (Phys. Lett. A 241 135 (1998)). Theoretical and experimental analysis in terms of the secure key distribution rate shows that secure key distribution is possible even if the eavesdropper could receive more photons than the legitimate receiver, as long as the signal-to-noise-ratio (SNR) of the receiver is better than -9dB of the eavesdropper's SNR. Secure key distribution was demonstrated at the maximum rate of 0.04 bit per sender's bit and transmission rate of 2 Mb/s in the experiment employing conventional fiber optics. The present protocol has advantages of the efficient key distribution and the simple implementation over other quantum key distribution protocols. However, careful design and management are necessary to keep the security of the crypto-system.

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