LiNbO3-based Optical PUFs for Post-Quantum Cryptographic Key Generation and Authentication: Dual Doping Pathways, Entropy Model, and Security Analysis

Sergiy Skrebtsov; Gennady Khalimov; Volodymyr Chyshkala

doi:10.5281/zenodo.21237356

July 7, 2026Open Access

LiNbO3-based Optical PUFs for Post-Quantum Cryptographic Key Generation and Authentication: Dual Doping Pathways, Entropy Model, and Security Analysis

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Key Points

This research aims to enhance the performance of LiNbO3-based optical PUFs for cryptographic applications by exploring dual doping pathways.
Introduced MgO and ZnO doping pathways for photorefractive suppression.
Conducted experiments with four calibration points and analyzed residual error.
Developed an analytical entropy model for evaluating security and reliability.
MgO doping demonstrated zero residual error across tested points.
ZnO doping stabilized new calibration at 4.6 mol.% with improved performance.
Enhanced security features of PUFs indicated through the entropy model analysis.

Implication

Investigates dual doping pathways' effects on PUF security and key generation reliability.

Abstract

We extend the analytical entropy model of LiNbO3-based optical Physical Unclonable Functions (PUFs) in two directions. First, we introduce and compare two independent photorefractive suppression pathways: MgO doping (calibrated, four experimental points, zero residual error) and ZnO doping (new, partially calibrated via a real nonlinearity point at 4.6 mol.% ZnO). A critical

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Cite This Study

Skrebtsov et al. (2026) studied this question.

synapsesocial.com/papers/6a4f3a702b81a944af574c4d https://doi.org/10.5281/zenodo.21237356

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LiNbO3-based Optical PUFs for Post-Quantum Cryptographic Key Generation and Authentication: Dual Doping Pathways, Entropy Model, and Security Analysis

Key Points

Implication

Abstract

Discussion

Cite This Study

LiNbO3-based Optical PUFs for Post-Quantum Cryptographic Key Generation and Authentication: Dual Doping Pathways, Entropy Model, and Security Analysis

Key Points

Implication

Abstract

Discussion

Cite This Study

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