One software tool for testing square s-boxes

TL;DR

This paper introduces a software tool designed to test and measure square S-boxes in encryption algorithms, utilizing information theory-based criteria and proposing two new private testing criteria.

Contribution

The paper presents a novel software tool for testing square S-boxes, including the development of new private criteria and pseudo codes for their creation and evaluation.

Findings

The tool effectively tests static and dynamic criteria of S-boxes.

Two new private criteria for S-box testing are proposed.

Mathematical definitions and pseudo codes for the new criteria are provided.

Abstract

An encryption technique is widely used to keep data confidential. Most of the block symmetric algorithms use substitution functions. Often this functions use so called S-BOX matrix. In this paper author presents one software tool for testing and measuring square s-boxes. Based of information theory functions for testing static and dynamic criteria are presented. These criteria are mathematically defined for square s-boxes. Two new criteria "private criteria" a proposed and pseudo codes for they creation and testing are presented.