A Fault Analysis on SNOVA

Published in In *eprint*, 2024

SNOVA is a compact, post-quantum signature scheme and a second-round candidate in the NIST PQC competition. This paper analyzes its resistance to fault attacks.

Main contributions:

  • Demonstrates key-recovery attacks using transient and permanent faults
  • Introduces a novel fault-assisted reconciliation strategy based on solving quadratic systems
  • Achieves key recovery with a small number of faulty signatures
  • Simulates the impact of fault injections at various security levels
  • Proposes a lightweight countermeasure to enhance robustness with minimal performance overhead

This work highlights the urgent need for fault-resilient designs in post-quantum cryptographic primitives.

Recommended citation: Gustavo Banegas, Ricardo Villanueva-Polanco. (2024). "A Fault Analysis on SNOVA." In eprint.
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