scholarly journals A Novel Plain-Text Related Image Encryption Algorithm Based on LB Compound Chaotic Map

Mathematics ◽  
2021 ◽  
Vol 9 (21) ◽  
pp. 2778
Author(s):  
Shijie Zhang ◽  
Lingfeng Liu ◽  
Hongyue Xiang
Keyword(s):  
Image Encryption ◽  
Chaotic Map ◽  
Logistic Map ◽  
Specific Form ◽  
Encryption Algorithm ◽  
Encryption Scheme ◽  
Differential Attack ◽  
Plain Text ◽  
Encryption Algorithms ◽  
Image Encryption Algorithm

Chaos systems have been widely used in image encryption algorithms. In this article, we introduce an LB (Logistic-Baker) compound chaotic map that can greatly improve the complexity of original Logistic map and Baker map, as well as the generated sequences have pseudo-randomness. Furthermore, based on the LB compound chaotic map, an image encryption algorithm is proposed. To resist the differential attack, and enhance the sensitivity of plain-text, the parameters of this algorithm are plain-text related. In this algorithm, the compound chaotic function is influenced by the plain-text image; thus, the specific form of this chaotic map, and its dynamics will be different when encrypting different images. Numerical experiment results indicate that the effect of this novel plain-text related image encryption scheme is excellent, as well as can be competitive with other corresponding algorithms.

scholarly journals Image Encryption Algorithm Based on Tent Delay-Sine Cascade with Logistic Map

Symmetry ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 355 ◽  
Author(s):  
Guidong Zhang ◽  
Weikang Ding ◽  
Lian Li
Keyword(s):  
Image Encryption ◽  
Chaotic Map ◽  
Logistic Map ◽  
Correlation Coefficients ◽  
Encryption Algorithm ◽  
Plain Text ◽  
Parameter Interval ◽  
Chaotic Parameter ◽  
Image Encryption Algorithm ◽  
The Ideal

We propose a new chaotic map combined with delay and cascade, called tent delay-sine cascade with logistic map (TDSCL). Compared with the original one-dimensional simple map, the proposed map has increased initial value sensitivity and internal randomness and a larger chaotic parameter interval. The chaotic sequence generated by TDSCL has pseudo-randomness and is suitable for image encryption. Based on this chaotic map, we propose an image encryption algorithm with a symmetric structure, which can achieve confusion and diffusion at the same time. Simulation results show that after encryption using the proposed algorithm, the entropy of the cipher is extremely close to the ideal value of eight, and the correlation coefficients between the pixels are lower than 0.01, thus the algorithm can resist statistical attacks. Moreover, the number of pixel change rate (NPCR) and the unified average changing intensity (UACI) of the proposed algorithm are very close to the ideal value, which indicates that it can efficiently resist chosen-plain text attack.

Image Encryption Algorithm Based on Substitution Principle and Shuffling Scheme

2020 ◽  
Vol 38 (3B) ◽  
pp. 98-103
Author(s):  
Atyaf S. Hamad ◽  
Alaa K. Farhan
Keyword(s):  
Image Encryption ◽  
Chaotic Map ◽  
Logistic Map ◽  
Encryption Algorithm ◽  
Second Phase ◽  
Cipher Text ◽  
The Face ◽  
Substitution Principle ◽  
2D Logistic Map ◽  
Image Encryption Algorithm

This research presents a method of image encryption that has been designed based on the algorithm of complete shuffling, transformation of substitution box, and predicated image crypto-system. This proposed algorithm presents extra confusion in the first phase because of including an S-box based on using substitution by AES algorithm in encryption and its inverse in Decryption. In the second phase, shifting and rotation were used based on secrete key in each channel depending on the result from the chaotic map, 2D logistic map and the output was processed and used for the encryption algorithm. It is known from earlier studies that simple encryption of images based on the scheme of shuffling is insecure in the face of chosen cipher text attacks. Later, an extended algorithm has been projected. This algorithm performs well against chosen cipher text attacks. In addition, the proposed approach was analyzed for NPCR, UACI (Unified Average Changing Intensity), and Entropy analysis for determining its strength.

scholarly journals A Lightweight Image Encryption Algorithm Based on Message Passing and Chaotic Map

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Hui Liu ◽  
Bo Zhao ◽  
Jianwen Zou ◽  
Linquan Huang ◽  
Yifan Liu
Keyword(s):  
Image Encryption ◽  
Message Passing ◽  
High Speed ◽  
Chaotic Map ◽  
Logistic Map ◽  
Encryption Algorithm ◽  
Pseudorandom Sequence ◽  
Pseudorandom Sequences ◽  
Plain Image ◽  
Image Encryption Algorithm

The popularization of 5G and the development of cloud computing further promote the application of images. The storage of images in an untrusted environment has a great risk of privacy leakage. This paper outlines a design for a lightweight image encryption algorithm based on a message-passing algorithm with a chaotic external message. The message-passing (MP) algorithm allows simple messages to be passed locally for the solution to a global problem, which causes the interaction among adjacent pixels without additional space cost. This chaotic system can generate high pseudorandom sequences with high speed performance. A two-dimensional logistic map is utilized as a pseudorandom sequence generator to yield the external message sets of edge pixels. The external message can affect edge pixels, and then adjacent pixels interact with each other to produce an encrypted image. A MATLAB simulation shows the cipher-image performs fairly uniform distribution and has acceptable information entropy of 7.996749. The proposed algorithm reduces correlation coefficients from plain-image 1 to its cipher-image 0, which covers all of the plain-image characters with high computational efficiency (speed = 18.200374 Mbit/s). Theoretical analyses and experimental results prove the proposed algorithm’s persistence to various existing attacks with low cost.

scholarly journals A Secure Image Encryption Algorithm Based on Rubik's Cube Principle

2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
Khaled Loukhaoukha ◽  
Jean-Yves Chouinard ◽  
Abdellah Berdai
Keyword(s):  
Image Encryption ◽  
Security Analysis ◽  
Encryption Algorithm ◽  
Differential Attack ◽  
Rubik's Cube ◽  
Rubik’S Cube ◽  
Secret Keys ◽  
Encryption Algorithms ◽  
Cryptographic Attacks ◽  
Image Encryption Algorithm

In the past few years, several encryption algorithms based on chaotic systems have been proposed as means to protect digital images against cryptographic attacks. These encryption algorithms typically use relatively small key spaces and thus offer limited security, especially if they are one-dimensional. In this paper, we proposed a novel image encryption algorithm based on Rubik's cube principle. The original image is scrambled using the principle of Rubik's cube. Then, XOR operator is applied to rows and columns of the scrambled image using two secret keys. Finally, the experimental results and security analysis show that the proposed image encryption scheme not only can achieve good encryption and perfect hiding ability but also can resist exhaustive attack, statistical attack, and differential attack.

scholarly journals A Symmetric Image Encryption Algorithm Based on a Coupled Logistic–Bernoulli Map and Cellular Automata Diffusion Strategy

Entropy ◽  
2019 ◽  
Vol 21 (5) ◽  
pp. 504 ◽  
Author(s):  
Wei Zhang ◽  
Zhiliang Zhu ◽  
Hai Yu
Keyword(s):  
Cellular Automata ◽  
Image Encryption ◽  
High Efficiency ◽  
Chaotic Map ◽  
Logistic Map ◽  
Three Dimensional ◽  
Encryption Algorithm ◽  
Original Structure ◽  
One Dimensional ◽  
Image Encryption Algorithm

In this paper, the properties of the classical confusion–substitution structure and some recently proposed pseudorandom number generators using one-dimensional chaotic maps are investigated. To solve the low security problem of the original structure, a new bit-level cellular automata strategy is used to improve the sensitivity to the cryptosystem. We find that the new evolution effects among different generations of cells in cellular automata can significantly improve the diffusion effect. After this, a new one-dimensional chaotic map is proposed, which is constructed by coupling the logistic map and the Bernoulli map (LBM). The new map exhibits a much better random behavior and is more efficient than comparable ones. Due to the favorable properties of the new map and cellular automata algorithm, we propose a new image-encryption algorithm in which three-dimensional bit-level permutation with LBM is employed in the confusion phase. Simulations are carried out, and the results demonstrate the superior security and high efficiency of the proposed scheme.

scholarly journals An image encryption scheme employing key related skipping

2018 ◽  
Vol 69 (2) ◽  
pp. 93-105 ◽  
Author(s):  
Jakub Oravec ◽  
Ján Turán ◽  
L’uboš Ovseník ◽  
Tomáš Huszaník
Keyword(s):  
Phase Space ◽  
Image Encryption ◽  
Statistical Tests ◽  
Logistic Map ◽  
Encryption Algorithm ◽  
Encryption Scheme ◽  
Image Pixels ◽  
Encrypted Images ◽  
Image Encryption Algorithm ◽  
Chaotic Logistic Map

Abstract This paper describes an image encryption algorithm which utilizes chaotic logistic map. Values generated by this map are used in two steps of algorithm which shuffles image pixels and then changes their intensities. Design of the encryption scheme considers possibility of various attacks, such as statistical, differential or phase space reconstruction attacks. Robustness against last mentioned type of attacks is introduced by selective skipping of values generated by the map. This skipping depends on key entered by user. The paper also verifies properties of proposed algorithm by common measures and by set of statistical tests that examine randomness of computed encrypted images. Results are compared with other approaches and they are also briefly discussed.

Image Encryption Algorithm Based on 3D Arnold Cat and Logistic Map

2011 ◽  
Vol 317-319 ◽  
pp. 1537-1540 ◽  
Author(s):  
Tian Gong Pan ◽  
Da Yong Li
Keyword(s):  
Image Encryption ◽  
Chaotic Map ◽  
Logistic Map ◽  
Encryption Algorithm ◽  
Simulation Experiments ◽  
Arnold Cat Map ◽  
Classical Transformation ◽  
Image Encryption Algorithm ◽  
Small Period

Arnold cat map is a classical transformation of image encryption, but it has some shortcomings such as short key quantities, small period and so on. On the basis of Arnold cat map, it presented an algorithm of image encryption based on 3D Arnold cat and chaotic map. Simulation experiments show that the encryption algorithm has characters of strong keys, better effect and fast.

scholarly journals An Image Encryption Algorithm Using Logistic Map with Plaintext-Related Parameter Values

Entropy ◽  
2021 ◽  
Vol 23 (11) ◽  
pp. 1373
Author(s):  
Jakub Oravec ◽  
Lubos Ovsenik ◽  
Jan Papaj
Keyword(s):  
Image Encryption ◽  
Chaotic Behavior ◽  
Chaotic Map ◽  
Logistic Map ◽  
Encryption Algorithm ◽  
Parameter Modification ◽  
Modification Technique ◽  
Plain Image ◽  
Parameter Values ◽  
Image Encryption Algorithm

This paper deals with a plaintext-related image encryption algorithm that modifies the parameter values used by the logistic map according to plain image pixel intensities. The parameter values are altered in a row-wise manner, which enables the usage of the same procedure also during the decryption. Furthermore, the parameter modification technique takes into account knowledge about the logistic map, its fixed points and possible periodic cycles. Since the resulting interval of parameter values achieves high positive values of Lyapunov exponents, the chaotic behavior of the logistic map should be most pronounced. These assumptions are verified by a set of experiments and the obtained numerical values are compared with those reported in relevant papers. It is found that the proposed design that uses a simpler, but well-studied, chaotic map with mitigated issues obtains results comparable with algorithms that use more complex chaotic systems. Moreover, the proposed solution is much faster than other approaches with a similar purpose.

Color Image Encryption with Cipher Feedback and Coupling Chaotic Map

2020 ◽  
Vol 30 (12) ◽  
pp. 2050173 ◽  
Author(s):  
Hongjun Liu ◽  
Abdurahman Kadir ◽  
Chengbo Xu
Keyword(s):  
Image Encryption ◽  
Color Image ◽  
Chaotic Map ◽  
Nonlinear Behavior ◽  
Encryption Algorithm ◽  
Encryption Scheme ◽  
Color Image Encryption ◽  
Quadratic Map ◽  
Previous Round ◽  
Image Encryption Algorithm

Based on the classic quadratic map (CQM) with abundant bifurcations and periodic windows, a new 3D improved coupling quadratic map (3D-ICQM) is constructed, and its phase diagram, Lyapunov exponent (LE) and randomness testing by TestU01 demonstrated that it has better ergodicity, more complex nonlinear behavior, larger chaotic range and better randomness. To investigate its application in cryptography, a 3D-ICQM based color image encryption algorithm with round key expansion is designed. To further enhance the randomness of key stream, the hash value of intermediate cipher of the previous round is converted into new initial values and fed back into 3D-ICQM, to generate the key stream for the current round. The security and statistical analyses demonstrated that the encryption scheme has better security performance than several existing algorithms.

scholarly journals An Image Encryption Algorithm Based on Balanced Pixel and Chaotic Map

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Jian Zhang ◽  
Yutong Zhang
Keyword(s):  
Information Security ◽  
Image Encryption ◽  
Chaotic Map ◽  
Security Analysis ◽  
Encryption Algorithm ◽  
Simulation Experiments ◽  
Encryption Algorithms ◽  
The Times ◽  
Human Eyes ◽  
Image Encryption Algorithm

Image encryption technology has been applied in many fields and is becoming the main way of protecting the image information security. There are also many ways of image encryption. However, the existing encryption algorithms, in order to obtain a better effect of encryption, always need encrypting several times. There is not an effective method to decide the number of encryption times, generally determined by the human eyes. The paper proposes an image encryption algorithm based on chaos and simultaneously proposes a balanced pixel algorithm to determine the times of image encryption. Many simulation experiments have been done including encryption effect and security analysis. Experimental results show that the proposed method is feasible and effective.

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