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Paper 2009/369

Quantum readout of Physical Unclonable Functions: Remote authentication without trusted readers and authenticated Quantum Key Exchange without initial shared secrets

Boris Skoric

Abstract

Physical Unclonable Functions (PUFs) are physical structures that are hard to clone and have a unique challenge-response behaviour. The term PUF was coined by Pappu et al. in 2001. That work triggered a lot of interest, and since then a substantial number of papers has been written about the use of a wide variety of physical structures for different security purposes such as identification, authentication, read-proof key storage, key distribution, tamper evidence, anti-counterfeiting, software-to-hardware binding and trusted computing. In this paper we propose a new security primitive: the quantum-readout PUF (QR-PUF). This is a classical PUF which is challenged using a quantum state, e.g. a single-photon state, and whose response is also a quantum state. By the no-cloning property of unknown quantum states, attackers cannot intercept challenges or responses without noticeably disturbing the readout process. Thus, a verifier who sends quantum states as challenges and receives the correct quantum states back can be certain that he is probing a specific QR-PUF without disturbances, even in the QR-PUF is far away `in the field' and under hostile control. For PUFs whose information content is not exceedingly large, all currently known PUF-based authentication and anti-counterfeiting schemes require trusted readout devices in the field. Our quantum readout scheme has no such requirement. Furthermore, we show how the QR-PUF authentication scheme can be interwoven with Quantum Key Exchange (QKE), leading to an authenticated QKE protocol between two parties. This protocol has the special property that it requires no a priori secret, or entangled state, shared by the two parties.

Note: Correction of an error in Theorems 1 and 2.

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Publication info
Published elsewhere. Unknown where it was published
Keywords
quantum key distributionquantum cryptographyphysical unclonable functionPUF
Contact author(s)
b skoric @ tue nl
History
2013-03-04: last of 3 revisions
2009-07-30: received
See all versions
Short URL
https://ia.cr/2009/369
License
Creative Commons Attribution
CC BY
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