Hampering fault attacks against lattice-based signature schemes: countermeasures and their efficiency (special session)

Abstract

Research on physical attacks on lattice-based cryptography has seen some progress in recent years and first attacks and countermeasures have been described. In this work, we perform an exhaustive literature review on fault attacks on lattice-based encryption and signature schemes. Based on this, we provide a complete overview of suggested countermeasures and analyze which of the proposed attacks can prevented by respective countermeasures. Moreover, we show for selected countermeasures how they affect the runtime of the protected operations.