Information-theoretic security analysis of physical uncloneable functions

P.T. Tuyls, B. Skoric, S. Stallinga, A.H.M. Akkermans, W. Ophey

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    53 Citations (Scopus)


    We propose a general theoretical framework to analyze the security of Physical Uncloneable Functions (PUFs). We apply the framework to optical PUFs. In particular we present a derivation, based on the physics governing multiple scattering processes, of the number of independent challenge-response pairs supported by a PUF. We find that the number of independent challenge-response pairs is proportional to the square of the thickness of the PUF and inversely proportional to the scattering length and the wavelength of the laser light. We compare our results to those of Pappu and show that they coincide in the case where the density of scatterers becomes very high.Finally, we discuss some attacks on PUFs, and introduce the Slow PUF as a way to thwart brute force attacks.
    Original languageEnglish
    Title of host publicationFinancial Cryptography and Data Security
    Subtitle of host publication9th International Conference, FC 2005, Roseau, The Commonwealth Of Dominica, February 28 – March 3, 2005. Revised Papers
    EditorsA.S. Patrick, M. Yung
    Place of PublicationBerlin
    Number of pages15
    ISBN (Electronic)978-3-540-31680-0
    ISBN (Print)3-540-26656-9, 978-3-540-26656-3
    Publication statusPublished - 2005

    Publication series

    NameLecture Notes in Computer Science (LNCS)
    ISSN (Print)0302-9743


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