Fault Attack on SQIsign

ePrint Report: Fault Attack on SQIsign

JeongHwan Lee, Donghoe Heo, Hyeonhak Kim, Gyusang Kim, Suhri Kim, Heeseok Kim, Seokhie Hong

In this paper, we introduce the first fault attack on SQIsign. By injecting a fault into the ideal generator during the commitment phase, we demonstrate a meaningful probability of inducing the generation of order $\mathcal{O}_0$. The probability is bounded by one parameter, the degree of commitment isogeny. We also show that the probability can be reasonably estimated by assuming uniform …

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