FPGA-based Strong PUF with Increased Uniqueness and Entropy Properties

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    Physical unclonable functions (PUFs), are a type of physical security primitive which enable identification and authentication of hardware devices, such as field programmable gate arrays (FPGAs) and application specific integrated circuits
    (ASICs). They exploit the random process varia tions that occur during manufacturing to create an intrinsic identifier or response unique to the physical hardware itself. Arbiter PUFs were the first proposed Strong PUF and are also widely studied. However, these designs often suffer from poor uniqueness and reliability characteristics leaving them vulnerable to modeling attacks, as
    well as being difficult to implement on FPGAs due to the physical layout restrictions. Some more recent designs based around nonlinear voltage transfer characteristics, or non-linear currents improve the resistance against modeling attacks. However they can only be implemented on ASICs due to their voltage/current requirements. To address this problem, we propose a new PUF
    circuit that offers a significantly higher theoretical entropy than the traditional Arbiter PUF construction, and which is specifically designed for FPGAs. The proposed work is verified on a low-cost Nexys4 board which contains a Xilinx Artix-7 FPGA fabricated at 28nm. The experimental results give a uniqueness of 20 %, considerably higher than the reported 9 % of a traditional Arbiter PUF design, and an expected reliability of ≈ 96 % over an environmental temperature range of 0 o C to 75 o C, with a reliability of ≈ 92 % with ±10 % variation in supply voltage.

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    DOI

    Original languageEnglish
    Title of host publication2017 IEEE International Symposium on Circuits and Systems (ISCAS): Proceedings
    Publisher IEEE
    Number of pages4
    ISBN (Electronic)978-1-4673-6853-7
    ISBN (Print)978-1-5090-1427-9
    DOIs
    Publication statusPublished - 28 Sep 2017
    Event IEEE International Symposium on Circuits and Systems (ISCAS) - Baltimore, United States
    Duration: 28 May 201731 May 2017
    http://iscas2017.org/

    Publication series

    Name
    PublisherIEEE International Symposium on Circuits and Systems (ISCAS)
    ISSN (Electronic)2379-447X

    Conference

    Conference IEEE International Symposium on Circuits and Systems (ISCAS)
    CountryUnited States
    CityBaltimore
    Period28/05/201731/05/2017
    Internet address

    ID: 149734314