A review of cryptosystems based on multi layer chaotic mappings

TL;DR

This paper reviews cryptosystems based on multi-layer chaotic mappings, discussing their design, key exchange, and security, with a focus on confusion, diffusion, and cryptanalysis vulnerabilities.

Contribution

It introduces a specific cryptosystem design using Arnold's Cat Map and logistic mapping, and addresses key exchange protocols and security analysis.

Findings

Chaotic maps can effectively create confusion and diffusion in cryptosystems.

The proposed cryptosystem demonstrates how chaos-based encryption can be implemented.

Cryptanalysis techniques pose potential threats to chaos-based cryptosystems.

Abstract

In recent years, a lot of research has gone into creating multi-layer chaotic mapping-based cryptosystems. Random-like behavior, a continuous broadband power spectrum, and a weak baseline condition dependency are all characteristics of chaotic systems. Chaos could be helpful in the three functional components of compression, encryption, and modulation in a digital communication system. To successfully use chaos theory in cryptography, chaotic maps must be built in such a way that the entropy they produce can provide the necessary confusion and diffusion. A chaotic map is used in the first layer of such cryptosystems to create confusion, and a second chaotic map is used in the second layer to create diffusion and create a ciphertext from a plaintext. A secret key generation mechanism and a key exchange method are frequently left out, and many researchers just assume that these essential components of any effective cryptosystem are always accessible. We review such cryptosystems by using a cryptosystem of our design, in which confusion in plaintext is created using Arnold's Cat Map, and logistic mapping is employed to create sufficient dispersion and ultimately get a matching ciphertext. We also address the development of key exchange protocols and secret key schemes for these cryptosystems, as well as the possible outcomes of using cryptanalysis techniques on such a system.