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Chinese Physics B 2018年第3期27卷 161-176页

作者： Zeyu Liu Tiecheng Xia Jinbo Wang Department of Mathematics Shanghai UniversityShanghai 200444China Science and Technology on Communication Security Laboratory Chengdu 610041China

We propose a new fractional two-dimensional triangle function combination discrete chaotic map(2D-TFCDM)with the discrete fractional ***,the chaos behaviors of the proposed map are observed and the bifurcation diagrams,the largest Lyapunov exponent plot,and the phase portraits are derived,***,with the secret keys generated by Menezes-Vanstone elliptic curve cryptosystem,we apply the discrete fractional map into color image *** that,the image encryption algorithm is analyzed in four aspects and the result indicates that the proposed algorithm is more superior than the other algorithms.

关键词： chaos fractional two-dimensional triangle function combination discrete chaotic map image encryption Menezes-Vanstone elliptic curve cryptosystem

image encryption based on a novel memristive chaotic system,Grain-128a algorithm and dynamic pixel masking

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Journal of Systems Engineering and Electronics 2022年第3期33卷 534-550页

作者： HUANG Lilian SUN Yi XIANG Jianhong WANG Linyu College of Information and Communication Engineering Harbin Engineering UniversityHarbin 150001China Key Laboratory of Advanced Marine Communication and Information Technology-Ministry of Industry and Information Technology Harbin Engineering UniversityHarbin 150001China

In this paper,we first propose a memristive chaotic system and implement it by circuit *** chaotic dynamics and various attractors are analysed by using phase portrait,bifurcation diagram,and Lyapunov *** particular,the system has robust chaos in a wide parameter range and the initial value space,which is favourable to the security communication ***,we further explore its application in image encryption and present a new *** image processing,the external key is protected by the Grain-128a algorithm and the initial values of the memristive system are updated with the plain *** not only perform random pixel extraction and masking with the chaotic cipher,but also use them as control parameters for Brownian motion to obtain the permutation *** addition,multiplication on the finite field GF(2^(8))is added to further enhance the ***,the simulation results verify that the proposed image encryption scheme has better performance and higher security,which can effectively resist various attacks.

关键词： memristive chaotic system super-wide parameter range image encryption Grain-128a algorithm dynamic pixel masking

image encryption using random sequence generated from generalized information domain

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Chinese Physics B 2016年第5期25卷 176-185页

作者：张夏衍张国基李璇任亚洲伍杰华 School of Computer Science and Engineering South China University of TechnologyHigher Education Mega Centre School of Mathematics South China University of Technology School of Software Fujian Normal University School of Computer Science and Engineering Big Data Research Center University of Electronic Science and Technology of China

A novel image encryption method based on the random sequence generated from the generalized information domain and permutation–diffusion architecture is proposed. The random sequence is generated by reconstruction from the generalized information file and discrete trajectory extraction from the data stream. The trajectory address sequence is used to generate a P-box to shuffle the plain image while random sequences are treated as keystreams. A new factor called drift factor is employed to accelerate and enhance the performance of the random sequence generator. An initial value is introduced to make the encryption method an approximately one-time pad. Experimental results show that the random sequences pass the NIST statistical test with a high ratio and extensive analysis demonstrates that the new encryption scheme has superior security.

关键词： image encryption random number generator cryptography

image encryption based on a delayed fractional-order chaotic logistic system

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Chinese Physics B 2012年第5期21卷 107-112页

作者：王震黄霞李宁宋晓娜 College of Information Science and Engineering Shandong University of Science and Technology Key Laboratory of Robotics and Intelligent Technology College of Information and Electrical EngineeringShandong University of Science and Technology College of Electronic and Information Engineering Henan University of Science and Technology

A new image encryption scheme is proposed based on a delayed fractional-order chaotic logistic *** the process of generating a key stream,the time-varying delay and fractional derivative are embedded in the proposed scheme to improve the *** a scheme is described in detail with security analyses including correlation analysis,information entropy analysis,run statistic analysis,mean-variance gray value analysis,and key sensitivity *** results show that the newly proposed image encryption scheme possesses high security.

关键词： image encryption fractional-order chaotic logistic system delay

image encryption Algorithm Based on New Fractional Beta Chaotic Maps

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Computer Modeling in Engineering & Sciences 2022年第7期132卷 119-131页

作者： Rabha W.Ibrahim Hayder Natiq Ahmed Alkhayyat Alaa Kadhim Farhan Nadia M.G.Al-Saidi Dumitru Baleanu Institute of Electrical and Electronics Engineers Kuala Lumpur59200Malaysia Information Technology College Imam Ja’afar Al-Sadiq UniversityBaghdad10001Iraq Department of Computer Technical Engineering College of Technical EngineeringIslamic UniversityNajaf192122Iraq Department of Computer Sciences University of TechnologyBaghdad10066Iraq Department of Applied Sciences University of TechnologyBaghdad10066Iraq Department of Mathematics Cankaya UniversityBalgatAnkara06530Turkey Institute of Space Sciences Magurele-BucharestR76900Romania Department of Medical Research China Medical UniversityTaichung40402Taiwan

In this study,a new algorithm of fractional beta chaotic maps is proposed to generate chaotic sequences for image *** proposed technique generates multi random sequences by shuffling the image pixel *** technique is used to blur the pixels connecting the input and encrypted images and to increase the attack *** proposed algorithm makes the encryption process sophisticated by using fractional chaotic maps,which hold the properties of *** fractional beta sequences are utilized to alter the image pixels to decryption *** experimental results proved that the proposed image encryption algorithm successfully encrypted and decrypted the images with the same *** output findings indicate that our proposed algorithm has good entropy and low correlation *** translates to enhanced security against different attacks.A MATLAB programming tool was used to implement and assess the image quality measures.A comparison with other image encryption techniques regarding the visual inspection and signal-to-noise ratio is provided.

关键词： Fractional calculus fractional beta function chaotic function image encryption

image encryption Using Multi-Scroll Attractor and Chaotic Logistic Map

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Computers, Materials & Continua 2022年第8期72卷 3447-3463页

作者： R.Anitha B.Vijayalakshmi Department of Electronics&Communication Engineering B.S.Abdur Rahman Crescent Institute of Science&TechnologyChennai600045TamilnaduIndia

In the current scenario,data transmission over the network is a challenging task as there is a need for protecting sensitive *** encryption schemes are less sensitive and less complex thus prone to attacks during *** has been observed that an encryption scheme using chaotic theory is more promising due to its non-linear and unpredictable ***,proposed a novel hybrid image encryption scheme with multi-scroll attractors and quantum chaos logistic maps(MSA-QCLM).The image data is classified as inter-bits and intra-bits which are permutated separately using multi scroll attractor&quantum logistic maps to generate random *** increase the encryption efficiency,a hybrid chaotic technique was *** is performed in a Qiskit simulation tool for various image *** simulation results and theoretical analysis show that the proposed method is more efficient than its classical counterpart,and its security is verified by the statistical analysis,keys sensitivity,and keyspace *** Number of changing pixel rate(NPCR)&the Unified averaged changed intensity(UACI)values were observed to be 99.6%&33.4%***,entropy oscillates from 7.9 to 7.901 for the different tested encrypted *** proposed algorithm can resist brute force attacks well,owing to the values of information entropy near the theoretical value of *** proposed algorithm has also passed the NIST test(Frequency Monobit test,Run test and DFT test).

关键词： Chiper key image encryption logistic map quantum chaos qiskit

A Chaotic System Based image encryption Scheme with Identical encryption and Decryption Algorithm

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Chinese Journal of Electronics 2017年第5期26卷 1022-1031页

作者： ZHANG Yong School of Software and Communication Engineering Jiangxi University of Finance and Economics

A new symmetric key image encryption scheme based on hyper-chaotic Lorenz system is *** encryption process and the decryption process are identical in the proposed *** both include two diffusion operations,one plaintext-related scrambling operation and three matrix rotating 180 degrees *** hyper-chaotic Lorenz system is employed to generate the secret code streams to encrypt the plain image,and to implement the diffusion process with XOR *** plaintext-related scrambling is used in this scheme to make different plain images correspond to different secret code streams even when the secret keys are the same,so that the scheme can fight against the chosen/known plaintext *** results show that the proposed scheme has the merits of high encryption speed,large key space,strong key sensitivity,strong plaintext sensitivity,good statistical properties of cipher-text,and etc.,and can be used in practical communications.

关键词： image encryption Hyper-chaotic Lorenz system Identical encryption and decryption algorithm Plaintext-related scrambling Security analysis

A lightweight symmetric image encryption cryptosystem in wavelet domain based on an improved sine map

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Chinese Physics B 2024年第3期33卷 266-276页

作者：陈柏池黄林青蔡述庭熊晓明张慧 School of Advanced Manufacturing Guangdong University of TechnologyJieyang 522000China School of Integrated Circuits Guangdong University of TechnologyGuangzhou 510006China School of Automation Guangdong University of TechnologyGuangzhou 510006China

In the era of big data,the number of images transmitted over the public channel increases *** a result,it is crucial to devise the efficient and highly secure encryption method to safeguard the sensitive *** this paper,an improved sine map(ISM)possessing a larger chaotic region,more complex chaotic behavior and greater unpredictability is proposed and extensively *** upon the strengths of ISM,we introduce a lightweight symmetric image encryption cryptosystem in wavelet domain(WDLIC).The WDLIC employs selective encryption to strike a satisfactory balance between security and ***,only the low-frequency-low-frequency component is chosen to encrypt utilizing classic permutation and *** leveraging the statistical properties in wavelet domain,Gaussianization operation which opens the minds of encrypting image information in wavelet domain is first proposed and employed to all *** and theoretical analysis demonstrate the high speed and the remarkable effectiveness of WDLIC.

关键词： image encryption discrete wavelet transform 1D-chaotic system selective encryption Gaussianization operation

An image encryption algorithm based on spatiotemporal chaos and middle order traversal of a binary tree

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Chinese Physics B 2022年第11期31卷 262-271页

作者： Yining Su Xingyuan Wang Shujuan Lin School of Information Science and Technology Dalian Maritime UniversityDalian 116026China

This paper proposes an image encryption algorithm based on spatiotemporal chaos and middle order traversal of a binary ***,other programming software is used to perform the middle order traversal,and the plaintext image is sorted according to the middle order traversal sequence on the ***,the chaotic sequence is generated using the coupled map lattice to set the chaotic interference ***,the XOR operation between the adjacent pixel values of the replacement image is completed to generate the ciphertext *** simulation and experimental results show that the proposed algorithm can resist typical attacks and has good robustness.

关键词： spatiotemporal chaos image encryption middle order traversal coupled map lattice

Asymmetric image encryption algorithm based on a new three-dimensional improved logistic chaotic map

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Chinese Physics B 2023年第3期32卷 153-163页

作者：叶国栋吴惠山黄小玲 Syh-Yuan Tan Faculty of Mathematics and Computer Science Guangdong Ocean UniversityZhanjiang 524088China Guangdong Provincial Engineering and Technology Research Center of Far Sea Fisheries Management and Fishing of South China Sea Zhanjiang 524088China School of Computing Newcastle UniversityNewcastle NE45TGUK

Based on some analyses of existing chaotic image encryption frameworks and a new designed three-dimensional improved logistic chaotic map(3D-ILM),an asymmetric image encryption algorithm using public-key Rivest–Shamir–Adleman(RSA)is presented in this *** the first stage,a new 3D-ILM is proposed to enhance the chaotic behavior considering analysis of time sequence,Lyapunov exponent,and Shannon *** the second stage,combined with the public key RSA algorithm,a new key acquisition mathematical model(MKA)is constructed to obtain the initial keys for the ***,the key stream can be produced depending on the plain image for a higher ***,a novel process model(NPM)for the input of the 3D-ILM is built,which is built to improve the distribution uniformity of the chaotic *** the third stage,to encrypt the plain image,a pre-process by exclusive OR(XOR)operation with a random matrix is ***,the pre-processed image is performed by a permutation for rows,a downward modulo function for adjacent pixels,a permutation for columns,a forward direction XOR addition-modulo diffusion,and a backward direction XOR addition-modulo diffusion to achieve the final cipher ***,experiments show that the the proposed algorithm has a better ***,the number of pixels change rate(NPCR)is close to ideal case 99.6094%,with the unified average changing intensity(UACI)close to 33.4634%,and the information entropy(IE)close to 8.

关键词： three-dimensional improved logistic chaotic map(3D-ILM) Rivest–Shamir–Adleman(RSA)algorithm image encryption confusion entropy