A Digital signature scheme based on Module-LWE and Module-SIS

TL;DR

This paper introduces an enhanced digital signature scheme based on Module-LWE and Module-SIS problems, achieving higher security and lower failure probability by enlarging the underlying module, improving upon previous schemes.

Contribution

The paper presents an improved digital signature scheme with increased security and reduced failure probability, based on modifications to existing Module-LWE and Module-SIS based schemes.

Findings

Higher security level compared to previous schemes

Smaller decoding failure probability achieved

Enlarged module size to enhance security

Abstract

In this paper, we present an improved version of the digital signature scheme proposed by Sharafi and Daghigh based on Module-LWE and Module-SIS problems. Our proposed signature scheme has a notably higher security level and smaller decoding failure probability, than the ones in the Sharaf-Daghigh scheme, at the expense of enlarging the module of the underlying basic ring.