A Multimode Configurable Physically Unclonable Function With Bit-Instability-Screening and Power-Gating Strategies

Li, Gang; Wang, Pengjun; Ma, Xueli; Shi, Yijiang; Chen, Bo; Zhang, Yuejun

doi:10.1109/tvlsi.2020.3030945

Cited by 11 publications

(2 citation statements)

References 31 publications

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“…Last, we note that since the encryption keys of the CPAL PUF exist in an analog form (before digitization), the bit length can be arbitrarily long depending on how discretization and digitization are performed. These intriguing properties may make the proposed PUF outperform the traditional digital PUFs, such as the multiple-valued logic PUF ( 50 ), monostable PUF ( 51 ), and voltage divider PUF ( 52 ), of which the bit length can only be increased by introducing considerably increasing the number of cells/bits. In addition, various input challenges and, thus, a potentially large number of CRPs may be created by adjusting the complex-valued amplitude ratio of two input waves.…”

Section: Resultsmentioning

confidence: 99%

Electromagnetically unclonable functions generated by non-Hermitian absorber-emitter

Yang,

Ye,

Pan

et al. 2023

Sci. Adv.

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Physically unclonable functions (PUFs) are a class of hardware-specific security primitives based on secret keys extracted from integrated circuits, which can protect important information against cyberattacks and reverse engineering. Here, we put forward an emerging type of PUF in the electromagnetic domain by virtue of the self-dual absorber-emitter singularity that uniquely exists in the non-Hermitian parity-time ( PT )–symmetric structures. At this self-dual singular point, the reconfigurable emissive and absorptive properties with order-of-magnitude differences in scattered power can respond sensitively to admittance or phase perturbations caused by, for example, manufacturing imperfectness. Consequently, the entropy sourced from inevitable manufacturing variations can be amplified, yielding excellent PUF security metrics in terms of randomness and uniqueness. We show that this electromagnetic PUF can be robust against machine learning–assisted attacks based on the Fourier regression and generative adversarial network. Moreover, the proposed PUF concept is wavelength-scalable in radio frequency, terahertz, infrared, and optical systems, paving a promising avenue toward applications of cryptography and encryption.

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Section: Resultsmentioning

confidence: 99%

Electromagnetically unclonable functions generated by non-Hermitian absorber-emitter

Yang,

Ye,

Pan

et al. 2023

Sci. Adv.

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show abstract

“…To quantify the degree of correlation between the PUF outputs for different challenges, the ACF of the proposed analog PUF is evaluated [34]. ACF measures the correlation of a signal with a delayed copy of itself as a function of delay.…”

Section: Puf Characterization and Randomness Analysismentioning

confidence: 99%

A Low-Power, 65 nm 24.6-to-30.1 GHz Trusted LC Voltage-Controlled Oscillator Achieving 191.7 dBc/Hz FoM at 1 MHz

Kurtoglu,

Shirazi,

Mirabbasi

et al. 2024

JLPEA

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This work presents a novel trusted LC voltage-controlled oscillator (VCO) with an embedded compact analog Physically Unclonable Function (PUF) used for authentication. The trusted VCO is implemented in a 1P9M 65 nm standard CMOS process and consumes 1.75 mW. It exhibits a measured phase noise (PN) of −104.8 dBc/Hz @ 1 MHz and −132.2 dBc/Hz @ 10 MHz offset, resulting in Figures of Merit (FoMs) of 191.7 dBc/Hz and 199.1 dBc/Hz, respectively. With the measured frequency tuning range (TR) of ~5.5 GHz, the FoM with tuning (FoMT) reaches 197.6 dBc/Hz and 205.0 dBc/Hz at 1 MHz and 10 MHz offset, respectively. The analog PUF consists of CMOS cross-coupled pairs in the main VCO to change analog characteristics. Benefiting from the impedance change and parasitic capacitance of the cross-coupled pairs, the AC and DC responses of the VCO are utilized for multiple responses for each input. The PUF consumes 0.83 pJ/bit when operating at 1.5 Gbps. The proposed PUF exhibits a measured Inter-Hamming Distance (HD) of 0.5058b and 0.4978b, with Intra-HD reaching 0.0055b and 0.0053b for the current consumption and fosc, respectively. The autocorrelation function (ACF) of 0.0111 and 0.0110 is obtained for the current consumption and fosc, respectively, at a 95% confidence level.

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PI PUF: A Processor-Intrinsic PUF for IoT

Li¹,

Wang²,

Zhang³

et al. 2023

Computers and Electrical Engineering

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A Multimode Configurable Physically Unclonable Function With Bit-Instability-Screening and Power-Gating Strategies

Cited by 11 publications

References 31 publications

Electromagnetically unclonable functions generated by non-Hermitian absorber-emitter

Electromagnetically unclonable functions generated by non-Hermitian absorber-emitter

A Low-Power, 65 nm 24.6-to-30.1 GHz Trusted LC Voltage-Controlled Oscillator Achieving 191.7 dBc/Hz FoM at 1 MHz

PI PUF: A Processor-Intrinsic PUF for IoT

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