Securing Digital Images through Simple Permutation-Substitution Mechanism in Cloud-Based Smart City Environment

Ahmad Alanezi,Hoshang Kolivand,Hany S. Khalifa,Syam Sankar,Basma Abd El-Rahiem,Bassem Abd-El-Atty,Ahmed A. Abd El-Latif,Sen Bai

doi:10.1155/2021/6615512

Abstract

Data security plays a significant role in data transfer in cloud-based smart cities. Chaotic maps are commonly used in designing modern cryptographic applications, in which one-dimensional (1D) chaotic systems are widely used due to their simple design and low computational complexity. However, 1D chaotic maps suffer from different kinds of attacks because of their chaotic discontinuous ranges and small key-space. To own the benefits of 1D chaotic maps and avoid their drawbacks, the cascading of two integrated 1D chaotic systems has been utilized. In this paper, we report an image cryptosystem for data transfer in cloud-based smart cities using the cascading of Logistic-Chebyshev and Logistic-Sine maps. Logistic-Sine map has been utilized to permute the plain image, and Logistic-Chebyshev map has been used to substitute the permuted image, while the cascading of both integrated maps has been utilized in performing XOR procedure on the substituted image. The security analyses of the suggested approach prove that the encryption mechanism has good efficiency as well as lower encryption time compared with other related algorithms.

Highlights

The data generated from various sources are usually kept inside a cloud server and are manipulated by the concerned government officials and citizens of the city [1, 2]. e data of citizens include healthcare information, purchase behavior, weather conditions, environmental changes, and transport information. e majority of the data take the form of images
In order to save the data from exploitation by third parties, we need to build efficient encryption mechanisms so that they can be integrated with the cloud system for secure storage
We report a new image cryptosystem using the cascading of two integrated 1D chaotic systems (LogisticChebyshev and Logistic-Sine)

Summary

Introduction

The data generated from various sources (smart city applications) are usually kept inside a cloud server and are manipulated by the concerned government officials and citizens of the city [1, 2]. e data of citizens include healthcare information, purchase behavior, weather conditions, environmental changes, and transport information. e majority of the data take the form of images. E active area of research in designing encryption algorithms for images is chaos-based cryptography [3, 4] It basically involves the processing of images with a sequence of random numbers produced by a chaotic system. E selection of a particular step (permutation or substitution) in the algorithm is decided by three factors: the step must be reversible, yield an enhanced value of evaluation parameters, and have fast running speed Researchers in their new works clearly show the design of one-dimensional (1D) chaotic systems [14, 16, 17] and multidimensional chaotic maps [10,11,12,13] with an exclusive application in image encryption.

Proposed Framework for Cloud-Based Smart City

Proposed Image Cipher Approach

Experimental Results

Result