Plover: Masking-Friendly Hash-and-Sign Lattice Signatures

ePrint Report: Plover: Masking-Friendly Hash-and-Sign Lattice Signatures

Muhammed F. Esgin, Thomas Espitau, Guilhem Niot, Thomas Prest, Amin Sakzad, Ron Steinfeld

We introduce a toolkit for transforming lattice-based hash-and-sign signature schemes into masking-friendly signatures secure in the t-probing model. Until now, efficiently masking lattice-based hash-and-sign schemes has been an open problem, with unsuccessful attempts such as Mitaka. A first breakthrough was made in 2023 with the NIST PQC submission Raccoon, although it was not formally proven.

Our main conceptual contribution is …

eprint report hash masking problem report ron sign signature signatures thomas toolkit