Continuous-variable quantum position verification secure against entangled attackers (2024)
Generalises $f$-BB84 QPV to continuous-variable inputs and shows analogous security statements as for finite-dimensional inputs.
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- Position-Based Quantum Cryptography
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- 2026-10-10
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Security of a continuous-variable based quantum position verification protocol (2023) arxiv.org
Generalises the protocol to continuous variable inputs and shows security against unentangled attacks depending on loss and noise rates.
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Making existing quantum position verification protocols secure against arbitrary transmission loss (2023) arxiv.org
Introduces an extra commitment step into QPV and shows that for a class of protocols, involving $f$-BB84 QPV, this makes the transmission loss irrelevant for security. Argues $f$-BB84 is a practical QPV protocol.
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Quantum position verification in bounded-attack-frequency model (2016) doi.org
Considers BB84 QPV with non-simultaneous arrival times of input information at the prover (the basis being encoded in which side arrived first). Discusses the general port-based attack in this setting.
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Breaking simple quantum position verification protocols with little entanglement (2020) arxiv.org
Considers the case when the input bases are related by different angles and shows dimension-dependent attacks depending on the angle. Notably, they show the angle $\pi/6$ (outside the Clifford hierarchy) can be attacked with a 6-dimensional resource state.
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Quantum position verification in the random oracle model (2014) doi.org
Considers QPV in higher dimensions carefully and shows unconditional security in the random oracle model.
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A tight lower bound for the BB84-states quantum-position-verification protocol (2015) arxiv.org
Gives essentially tight lower bound for attacks with classical communication.
Position-Based Quantum Cryptography › First Protocols > $f$-BB84 QPV: “Generalises $f$-BB84 QPV to continuous-variable inputs and shows analogous security statements as for finite-dimensional inputs.”