Image Encryption Algorithm Based on a Novel Six-Dimensional Hyper- Chaotic System

Abstract

Due to the rapid evaluation in the field of communications and multimedia and the increasing use of the Internet, multimedia data security has become very urgent. of the best alternative way to achieve multimedia data security is encryption, which prevents unauthorized entities from accessing confidential data. In recent years, the chaotic system of image encryption becomes an efficient way to encrypt images due to its high security. It has certain special properties like sensitivity to initial conditions, and control parameters, pseudorandom, ergodicity, and non-convergence, etc. chaotic dynamics systems became a promising alternative to traditional encryption algorithms. In this paper, This paper presents a new algorithm for the image encryption/decryption scheme depended on a novel six-dimensional hyper-chaotic system to achieve a high level of security, the chaotic sequence generated from system employ for permutation and diffusion the original image to create an encrypted image. The performance of the algorithm has been analyzed through analyzes statistical such as Histogram Analysis, Correlation Coefficient Analysis, Information Entropy Analysis, Key Space Analysis, Key Sensitivity Analysis, Number of Pixels Change Rate (NPCR), Unified Average Changing Intensity (UACI), Peak Signal to Noise Ratio, The experimental results show that the algorithm has good encryption performance, large keyspace equals to and the high sensitivity for small changes in secret key which makes the algorithm immune to Brute force attacks, and it can resist the statistical attacks, therefore, the presented encryption algorithm depends on a novel hyperchaotic system is more secure against the statistical and differential attacks.

Implementasi Kriptografi dengan Menggunakan Algoritma Arnold’s Cat Map dan Henon Map

“…UACI merupakan tolok ukur standar rata-rata perbedaan intensitas diantara dua citra yang terenkripsi [2]. Menurut [19] nilai ideal untuk UACI masing-masing bernilai antara 33,25% dan 33,48%, dan perhitungannya bisa dilakukan dengan rumus [20] :…”

“…NPCR menghitung perbandingan pada masing-masing piksel diantara dua citra yang terenkripsi dari citra asli yang sesuai jika terdapat perubahan pada kunci sebesar 1 bit [2]. Menurut [19] nilai ideal untuk NPCR lebih besar dari 99.6%, dan perhitungannya bisa dilakukan dengan rumus [20] :…”

A Novel Chaotic Block Image Encryption Algorithm Based on Deep Convolutional Generative Adversarial Networks

“…According to their dimensions, existing chaotic systems can be divided into low-dimensional chaotic systems and high-dimensional chaotic systems [9][10][11][12][13][14][15]. The author of [9] presented a four-dimensional quadratic autonomous hyperchaotic system based on the Lorenz system, which has only one hyperchaotic attractor.…”

“…The authors of [13] presented a new four-dimensional hyperchaotic system and applied it to image encryption. The authors of [14]- [15] presented an image encryption algorithm based on sixdimensional and seven-dimensional hyperchaotic systems, which has large secret key spaces. Low-dimensional chaotic systems are simple in structure and easy to implement.…”

An Efficient Confusion-Diffusion Structure for Image Encryption Using Plain Image Related Henon Map

“…To date, many image cryptosystems have been proposed to obtain a higher level of security by different chaotic map like one-dimensional logistic map [14], tent map [15], delayed coupled map [16], two-dimensional adjusted logistic map [17], three-465 dimensional cat map [18], 4D logistic map [19] and 6D hyperchaotic system [20], etc. Generally, onedimensional maps provide simple mathematical function, short key size, and insecure cryptosystem [14].…”