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Applicability of QKD: TerraQuantum view on the NSA's scepticism

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arxiv 2308.07082 v2 pith:BHWTCTSF submitted 2023-08-14 quant-ph physics.pop-phphysics.soc-ph

classification quant-phphysics.pop-phphysics.soc-ph
keywords quantumcommunicationscepticismwellanalogapplicabilityapproacharguments
verification ladder T0 review T1 audit T2 compute T3 formal

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Quantum communication offers unique features that have no classical analog, in particular, it enables provably secure quantum key distribution (QKD). Despite the benefits of quantum communication are well understood within the scientific community, the practical implementations sometimes meet with scepticism or even resistance. In a recent publication [1], NSA claims that QKD is inferior to "quantum-resistant" cryptography and does not recommend it for use. Here we show that such a sceptical approach to evaluation of quantum security is not well justified. We hope that our arguments will be helpful to clarify the issue.

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