Abusing Commodity DRAMs in IoT Devices to Remotely Spy on Temperature

Frank, Florian; Xiong, Wenjie; Anagnostopoulos, Nikolaos Athanasios; Schaller, André; Arul, Tolga; Koushanfar, Farinaz; Katzenbeisser, Stefan; Rührmair, Ulrich; Szefer, Jakub

doi:10.1109/tifs.2023.3271252

Cited by 2 publications

(1 citation statement)

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“…Based on our construction, it is also expected that a high degree of robustness can be maintained even under varying environmental conditions, such as varying the ambient temperature. At the same time, several well-established PUF types suffer from insufficient temperature robustness, for example Latch or D-FlipFlop PUFs [20], along with DRAM retention [21] or ring-oscillator PUFs [22], limiting their field of application. Furthermore, in contrast to many other CNT-based PUFs, a passivation layer serves as an additional protection barrier, allowing for deployment in harsh environments.…”

Section: Examples Of Conductive Cells Examples Of Non-conductive Cellsmentioning

confidence: 99%

CNT-PUFs: Highly Robust and Heat-Tolerant Carbon-Nanotube-Based Physical Unclonable Functions

Frank,

Böttger,

Mexis

et al. 2023

Nanomaterials

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In this work, we explored a highly robust and unique Physical Unclonable Function (PUF) based on the stochastic assembly of single-walled Carbon NanoTubes (CNTs) integrated within a wafer-level technology. Our work demonstrated that the proposed CNT-based PUFs are exceptionally robust with an average fractional intra-device Hamming distance well below 0.01 both at room temperature and under varying temperatures in the range from 23 ∘C to 120 ∘C. We attributed the excellent heat tolerance to comparatively low activation energies of less than 40 meV extracted from an Arrhenius plot. As the number of unstable bits in the examined implementation is extremely low, our devices allow for a lightweight and simple error correction, just by selecting stable cells, thereby diminishing the need for complex error correction. Through a significant number of tests, we demonstrated the capability of novel nanomaterial devices to serve as highly efficient hardware security primitives.

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Section: Examples Of Conductive Cells Examples Of Non-conductive Cellsmentioning

confidence: 99%