# All-Spin PUF: An Area Efficient and reliable PUF Design with Signature Improvement for Spin-Transfer Torque Magnetic Cell-Based All-Spin Circuits

2 TEST - Test and dEpendability of microelectronic integrated SysTems
LIRMM - Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier
Abstract : Recently, spin-transfer torque magnetic cell (STT-mCell) has emerged as a promising spintronic device to be used in Computing-In-Memory (CIM) system. However, it is challenging to guarantee the hardware security of STT-mCell based all spin circuits. In this work, we propose a novel Physical Unclonable Function (PUF) design for STT-mCell based all-spin circuit (All-Spin PUF) exploiting the unique manufacturing process variation (PV) on STT-mCell write latency. A methodology is used to select appropriate logic gates in the all-spin chip to generate a unique identification key. A linear feedback shift register (LFSR) initiates All-Spin PUF and simultaneously generates a 64-bit signature at each clock cycle. Signature generation is stabilized using an automatic write-back technique. In addition, a masking scheme is applied for signature improvement. The uniqueness of the improved signature is 49.61 $$\%$$ . With $$\pm 20\%$$ supply voltage, and 5°C-105°C temperature variations, All-Spin PUF shows a strong resiliency. In comparison with the state-of-the-art PUFs, our approach can reduce hardware overhead effectively. Finally, the robustness of All-Spin PUF against emerging modeling attack is verified as well.
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Document type :
Journal articles

https://hal-lirmm.ccsd.cnrs.fr/lirmm-03768916
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Submitted on : Monday, September 5, 2022 - 9:41:23 AM
Last modification on : Wednesday, September 7, 2022 - 3:30:48 AM

### Citation

Kangwei Xu, Dongrong Zhang, Qiang Ren, Yuanqing Cheng, Patrick Girard. All-Spin PUF: An Area Efficient and reliable PUF Design with Signature Improvement for Spin-Transfer Torque Magnetic Cell-Based All-Spin Circuits. ACM Journal on Emerging Technologies in Computing Systems, Association for Computing Machinery, In press, ⟨10.1145/3517811⟩. ⟨lirmm-03768916⟩

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