LESS-FM: Fine-Tuning Signatures from the Code Equivalence Problem

Code-based cryptographic schemes are highly regarded among the quantum-safe alternatives to current standards. Yet, designing code-based signatures using traditional methods has always been a challenging task, and proposals still far from target set by other post-quantum primitives (e.g. lattice-based). In this paper, we revisit recent work an innovative approach for signing, based on hardness of code equivalence problem. We introduce some optimizations provide security analysis all variants considered. then show that new parameters produce instances practical interest.