CycPUF: Cyclic Physical Unclonable Function

• URL: http://arxiv.org/abs/2402.08084v1
• Date: Mon, 12 Feb 2024 22:04:04 GMT
• Title: CycPUF: Cyclic Physical Unclonable Function
• Authors: Michael Dominguez, Amin Rezaei,
• Abstract summary: We introduce feedback signals into traditional delay-based PUF designs to give them a wider range of possible output behaviors. Based on our analysis, cyclic PUFs produce responses that can be binary, steady-state, oscillating, or pseudo-random under fixed challenges. The security gain of the proposed cyclic PUFs is also shown against state-of-the-art attacks.
• Score: 1.104960878651584
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Physical Unclonable Functions (PUFs) leverage manufacturing process imperfections that cause propagation delay discrepancies for the signals traveling along these paths. While PUFs can be used for device authentication and chip-specific key generation, strong PUFs have been shown to be vulnerable to machine learning modeling attacks. Although there is an impression that combinational circuits must be designed without any loops, cyclic combinational circuits have been shown to increase design security against hardware intellectual property theft. In this paper, we introduce feedback signals into traditional delay-based PUF designs such as arbiter PUF, ring oscillator PUF, and butterfly PUF to give them a wider range of possible output behaviors and thus an edge against modeling attacks. Based on our analysis, cyclic PUFs produce responses that can be binary, steady-state, oscillating, or pseudo-random under fixed challenges. The proposed cyclic PUFs are implemented in field programmable gate arrays, and their power and area overhead, in addition to functional metrics, are reported compared with their traditional counterparts. The security gain of the proposed cyclic PUFs is also shown against state-of-the-art attacks.

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