Classical and chaotic encryption techniques for the security of satellite images

Abstract

In this paper, we will provide an overview of the mechanisms used in image protection, especially Chaos-based encryption techniques available today. We will see how previously proposed methods such as data encryption standard (DES), Triple Data Encryption Standard (Triple- DES), and International Data Encryption Algorithm (IDEA) have been applied in image protection domain and how new concepts of Chaos-based encryption techniques are superior to traditional methods. The chaotic system is rich in significance and in implication because of sensitivity to change initial conditions, control parameters, ergodicity, random-like behaviour, repeated processing and very high diffusion and confusion properties that are desirable for cryptography.