A Cautionary Note When Looking for a Truly Reconfigurable Resistive RAM PUF
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Author
Chuang, Kai-HsinDegraeve, Robin
Fantini, Andrea
Groeseneken, Guido
Linten, Dimitri
Verbauwhede, Ingrid
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The reconfigurable physically unclonable function (PUF) is an advanced security hardware primitive, suitable for applications requiring key renewal or similar refresh functions. The Oxygen vacancies-based resistive RAM (RRAM), has been claimed to be a physically reconfigurable PUF due to its intrinsic switching variability. This paper first analyzes and compares various previously published RRAM-based PUFs with a physics-based RRAM model. We next discuss their possible reconfigurability assuming an ideal configuration-to-configuration behavior. The RRAM-to-RRAM variability, which mainly originates from a variable number of unremovable vacancies inside the RRAM filament, however, has been observed to have significant impact on the reconfigurability. We show by quantitative analysis on the clear uniqueness degradation from the ideal situation in all the discussed implementations. Thus we conclude that true reconfigurability with RRAM PUFs might be unachievable due to this physical phenomena.Citation
Chuang, K.-H., Degraeve, R., Fantini, A., Groeseneken, G., Linten, D., & Verbauwhede, I. (2018). A Cautionary Note When Looking for a Truly Reconfigurable Resistive RAM PUF. IACR Transactions on Cryptographic Hardware and Embedded Systems, 2018(1), 98-117. https://doi.org/10.13154/tches.v2018.i1.98-117Publisher
IACRDOI
https://doi.org/10.13154/tches.v2018.i1.98-117ae974a485f413a2113503eed53cd6c53
https://doi.org/10.13154/tches.v2018.i1.98-117
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