scholarly journals Chaotic Image Encryption Algorithm Based on Circulant Operation

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Xiaoling Huang ◽  
Guodong Ye ◽  
Kwok-Wo Wong
Keyword(s):  
Time Delay ◽  
Image Encryption ◽  
Lorenz System ◽  
Circulant Matrix ◽  
Chaotic Sequence ◽  
Encryption Algorithm ◽  
Secret Keys ◽  
Chaotic Image Encryption ◽  
Image Pixels ◽  
Image Encryption Algorithm

A novel chaotic image encryption scheme based on the time-delay Lorenz system is presented in this paper with the description of Circulant matrix. Making use of the chaotic sequence generated by the time-delay Lorenz system, the pixel permutation is carried out in diagonal and antidiagonal directions according to the first and second components. Then, a pseudorandom chaotic sequence is generated again from time-delay Lorenz system using all components. Modular operation is further employed for diffusion by blocks, in which the control parameter is generated depending on the plain-image. Numerical experiments show that the proposed scheme possesses the properties of a large key space to resist brute-force attack, sensitive dependence on secret keys, uniform distribution of gray values in the cipher-image, and zero correlation between two adjacent cipher-image pixels. Therefore, it can be adopted as an effective and fast image encryption algorithm.

scholarly journals A Novel Chaotic Image Encryption Algorithm Based on Latin Square and Random Shift

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Xuncai Zhang ◽  
Tao Wu ◽  
Yanfeng Wang ◽  
Liying Jiang ◽  
Ying Niu
Keyword(s):  
Image Encryption ◽  
Security Analysis ◽  
Latin Square ◽  
Chaotic Sequence ◽  
Lookup Table ◽  
Encryption Algorithm ◽  
Chaotic Image Encryption ◽  
Encryption Method ◽  
Image Encryption Algorithm ◽  
Square Matrix

To realize the safe transmission of images, a chaotic image encryption algorithm based on Latin square and random shift is proposed. The algorithm consists of four parts: key generation, pixel scrambling, pixel replacement, and bit scrambling. Firstly, the key is generated from the plain image to improve the sensitivity of the encryption method. Secondly, each pixel in each row of the image matrix is moved cyclically to the right, in turn, to change the position of the image pixel and realize pixel position scrambling. Then, a 256-order Latin square matrix composed of a chaotic sequence is used as a lookup table, and the replacement coordinates are calculated based on the image pixel value and the chaotic sequence value, replacing the corresponding coordinate elements in the image matrix. Finally, decompose the bitplane of the image matrix and combine it into two-bit matrices, scramble the two bit matrices, respectively, with the Latin square matrix, recombine the scrambled two-bit matrices, and convert them into decimal to obtain the ciphertext image. In the proposed encryption method, all the Latin square matrices used are generated by chaotic sequences, further enhancing the complexity of the generated Latin square matrix and improving the algorithm’s security. Experimental results and security analysis show that the proposed algorithm has good security performance and is suitable for image encryption.

scholarly journals Adaptive Chaotic Image Encryption Algorithm Based on RNA and Pixel Depth

Electronics ◽  
2021 ◽  
Vol 10 (15) ◽  
pp. 1770
Author(s):  
Xiaoqiang Zhang ◽  
Xuangang Yan
Keyword(s):  
Image Encryption ◽  
Three Dimensional ◽  
Encryption Algorithm ◽  
Current Time ◽  
Plain Image ◽  
Scope Of Application ◽  
Selective Diffusion ◽  
Chaotic Image Encryption ◽  
And Diffusion ◽  
Image Encryption Algorithm

To prevent the leakage of image content, image encryption technology has received increasing attention. Most current algorithms are only suitable for the images of certain types and cannot update keys in a timely manner. To tackle such problems, we propose an adaptive chaotic image encryption algorithm based on RNA and pixel depth. Firstly, a novel chaotic system, two-dimensional improved Logistic-adjusted-Sine map is designed. Then, we propose a three-dimensional adaptive Arnold transform for scrambling. Secondly, keys are generated by the hash values of the plain image and current time to achieve one-image, one-key, and one-time pad simultaneously. Thirdly, we build a pre-permuted RNA cube for 3D adaptive scrambling by pixel depth, chaotic sequences, and adaptive RNA coding. Finally, selective diffusion combined with pixel depth and RNA operations is performed, in which the RNA operators are determined by the chemical structure and properties of amino acids. Pixel depth is integrated into the whole procedure of parameter generation, scrambling, and diffusion. Experiments and algorithm analyses show that our algorithm has strong security, desirable performance, and a broader scope of application.

scholarly journals Correction to: An efficient pixel-level chaotic image encryption algorithm

2018 ◽  
Vol 94 (4) ◽  
pp. 3155-3155 ◽  
Author(s):  
Guodong Ye ◽  
Chen Pan ◽  
Xiaoling Huang ◽  
Qixiang Mei
Keyword(s):  
Image Encryption ◽  
Encryption Algorithm ◽  
Chaotic Image Encryption ◽  
Image Encryption Algorithm

scholarly journals An Image Encryption Algorithm with Total Diffusion

2018 ◽  
Vol 11 (1) ◽  
pp. 15-25
Author(s):  
Jakub Oravec ◽  
Ján Turán ◽  
Ľuboš Ovseník
Keyword(s):  
Image Encryption ◽  
Logistic Map ◽  
Encryption Algorithm ◽  
Diffusion Stage ◽  
Suitable Combination ◽  
Image Pixels ◽  
Encrypted Images ◽  
Two Stages ◽  
Image Encryption Algorithm ◽  
Chaotic Logistic Map

Abstract This paper proposes an image encryption algorithm which uses four scans of an image during the diffusion stage in order to achieve total diffusion between intensities of image pixels. The condition of total diffusion is fulfilled by a suitable combination of techniques of ciphertext chaining and plaintext related diffusion. The proposed encryption algorithm uses two stages which utilize chaotic logistic map for generation of pseudo-random sequences. The paper also briefly analyzes approaches described by other researchers and evaluates experimental results of the proposed solution by means of commonly used measures. Properties of our proposal regarding modifications of plain images prior to encryption or modifications of encrypted images prior to decryption are illustrated by two additional experiments. The obtained numeric results are compared with those achieved by other proposals and briefly discussed.

An efficient pixel-level chaotic image encryption algorithm

2018 ◽  
Vol 94 (1) ◽  
pp. 745-756 ◽  
Author(s):  
Guodong Ye ◽  
Chen Pan ◽  
Xiaoling Huang ◽  
Qixiang Mei
Keyword(s):  
Image Encryption ◽  
Encryption Algorithm ◽  
Chaotic Image Encryption ◽  
Image Encryption Algorithm
Sign in / Sign up

Export Citation Format

Share Document