An Improved Digital Image Encryption Algorithm Based on Sine Compound Chaotic System

2021 ◽  
pp. 676-687
Author(s):  
Jianchao Tang ◽  
Liyong Bao ◽  
Hongwei Ding ◽  
Zheng Guan ◽  
Min He
Keyword(s):  
Image Encryption ◽  
Chaotic System ◽  
Digital Image ◽  
Encryption Algorithm ◽  
Digital Image Encryption ◽  
Image Encryption Algorithm

The Image Encryption Scheme Based on the Generalized First-Order Directional Derivative Transformation

2010 ◽  
Vol 40-41 ◽  
pp. 537-542
Author(s):  
Zong Ying Li
Keyword(s):  
Image Encryption ◽  
Digital Image ◽  
Directional Derivative ◽  
Three Dimensional ◽  
Encryption Algorithm ◽  
First Order ◽  
Digital Image Encryption ◽  
Arnold Transformation ◽  
Scrambling Encryption ◽  
Image Encryption Algorithm

In order to improve the capability of scrambling encryption and anti-aggressive, we extended the two-dimensional Arnold transformation to three-dimensional, and designed one kind of new diffusion equation of the digital image pixel gray value, then introduced a novel digital image encryption algorithm based on them. The large number of simulation results and analysis have both shown that the proposed scheme is a very effective encryption algorithm.

scholarly journals A digital image encryption algorithm based on chaotic mapping

2019 ◽  
Vol 13 ◽  
pp. 174830261985347 ◽  
Author(s):  
Zhijuan Deng ◽  
Shaojun Zhong
Keyword(s):  
Image Encryption ◽  
Digital Image ◽  
Encryption Algorithm ◽  
Experimental Simulation ◽  
Secret Key ◽  
Chaotic Mapping ◽  
Key Space ◽  
Encrypted Images ◽  
Digital Image Encryption ◽  
Image Encryption Algorithm

In this article, we introduced a digital image encryption algorithm based on the chaotic mapping designed by Xiong et al. In their paper, the authors theoretically analyzed the algorithm and pointed out that the algorithm did not need to have the prior knowledge of the orbital distribution and one can select any chaotic model. In this way, the algorithm greatly expanded the cryptographic space and greatly reduced the number of iterations of the mapping. Since the algorithm has many characteristics, for instance, it is sensitive to the secret key, its key space is big, the pixel is well distributed after being encrypted, etc., the security of the encrypted images can be assured effectively. However, since the algorithm applied the image scrambling for encryption, and did not take the chosen-plaintext attacks into consideration, the algorithm is relatively weak in resisting the chosen-plaintext attacks. Therefore, we put forward a kind of image replacement method based on chaos, which can resist the chosen-plaintext attacks. And the experimental simulation proves that this algorithm not only has many characteristics, for instance, it is sensitive to the secret key, its key space is big, the pixel is well distributed after being encrypted, etc., but also can resist the chosen-plaintext attacks effectively. In the meanwhile, the algorithm is very sensitive to the small changes of the plaintexts, and its encrypted images will completely lose the features of the original ones.

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