Mask Conversions for d+1 shares in Hardware, with Application to Lattice-based PQC

ePrint Report: Mask Conversions for d+1 shares in Hardware, with Application to Lattice-based PQC

Quinten Norga, Jan-Pieter D'Anvers, Suparna Kundu, Ingrid Verbauwhede

The conversion between arithmetic and Boolean mask representations (A2B & B2A) is a crucial component for side-channel resistant implementations of lattice-based cryptography.
In this paper, we present a first- and high-order masked, unified hardware implementation which can perform both A2B & B2A conversions. We optimize the operation on several layers of abstraction, applicable to any protection order.
First, …

amp application channel conversion cryptography eprint report hardware pqc report side-channel