Continuous-variable quantum authentication of physical unclonable keys: Security against an emulation attack

Abstract

We consider a recently proposed entity authentication protocol, in which a physical unclonable key is interrogated by random coherent states of light, and the quadratures of the scattered light are analysed by means of a coarse-grained homodyne detection. We derive a sufficient condition for the protocol to be secure against an emulation attack, in which an adversary knows the challenge-response properties of the key, and moreover he can access the challenges during the verification. The security analysis relies on Holevo's bound and Fano's inequality, and suggests that the protocol is secure against the emulation attack for a broad range of physical parameters that are within reach of today's technology.

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References in corpus (5)

• Quantum Random Number Generators
• Phase control algorithms for focusing light through turbid media
• Programmable two-photon quantum interference in $10^3$ channels in opaque scattering media
• Continuous-variable quantum authentication of physical unclonable keys
• Effect of experimental parameters on optimal transmission of light through opaque media

Cited by in corpus (11)

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• Theoretical framework for physical unclonable functions, including quantum readout
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• Quantum cryptography beyond key distribution: theory and experiment
• Intercept-Resend Emulation Attacks Against a Continuous-Variable Quantum Authentication Protocol with Physical Unclonable Keys
• Quantum key distribution with post-processing driven by physical unclonable functions
• Remote quantum-safe authentication of entities with physical unclonable functions
• Optical scheme for cryptographic commitments with physical unclonable keys
• Effects of Kerr nonlinearity in physical unclonable functions
• Physical Unclonable Functions with Boson Sampling