Image Encryption Method by Using Chaotic Mapping Based on Multi-Layer Parameter Disturbance

2014 ◽  
Vol 539 ◽  
pp. 479-484
Author(s):  
Shu Juan Zhang ◽  
Yun He
Keyword(s):  
Image Encryption ◽  
Operation Time ◽  
Chaotic Sequence ◽  
Simulation Experiments ◽  
Chaotic Mapping ◽  
Layer Parameter ◽  
Number Of Layers ◽  
Pixel Location ◽  
Bit Plane ◽  
Encryption Method

Bit-plane decomposition makes images obtain a number of layers. According to the amount of data information, images are encrypted, and the paper proposes image encryption method with Chaotic Mapping based on multi-layer parameter disturbance. The advantage of multi-layer parameter disturbance is that it not only scrambles pixel location of images, but also changes pixel values of images. Bit-plane decomposition can increase the space of key. And using chaotic sequence generated by chaotic system with different complexities to encrypt layers with different information content can save operation time. The simulation experiments show that using chaotic mapping in image encryption method based on multi-layer parameter disturbance can cover plaintext effectively and safely, which makes it achieve ideal encryption effect.

scholarly journals Image Encryption Algorithm Based on the H-Fractal and Dynamic Self-Invertible Matrix

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Xuncai Zhang ◽  
Lingfei Wang ◽  
Ying Niu ◽  
Guangzhao Cui ◽  
Shengtao Geng
Keyword(s):  
Image Encryption ◽  
Security Analysis ◽  
Encryption Algorithm ◽  
Hyperchaotic System ◽  
Original Image ◽  
Invertible Matrix ◽  
Pseudorandom Sequences ◽  
Pixel Location ◽  
Encryption Method ◽  
Image Encryption Algorithm

In this paper, an image encryption algorithm based on the H-fractal and dynamic self-invertible matrix is proposed. The H-fractal diffusion encryption method is firstly used in this encryption algorithm. This method crosses the pixels at both ends of the H-fractal, and it can enrich the means of pixel diffusion. The encryption algorithm we propose uses the Lorenz hyperchaotic system to generate pseudorandom sequences for pixel location scrambling and self-invertible matrix construction to scramble and diffuse images. To link the cipher image with the original image, the initial values of the Lorenz hyperchaotic system are determined using the original image, and it can enhance the security of the encryption algorithm. The security analysis shows that this algorithm is easy to implement. It has a large key space and strong key sensitivity and can effectively resist plaintext attacks.

An image encryption method based on bit plane hiding technology

2006 ◽  
Vol 11 (5) ◽  
pp. 1283-1286
Author(s):  
Liu Bin ◽  
Li Zhitang ◽  
Tu Hao
Keyword(s):  
Image Encryption ◽  
Bit Plane ◽  
Encryption Method

An Image Scrambling Method Based on Chaotic Sequence and Space-Bit-Plane Operation

2011 ◽  
Vol 135-136 ◽  
pp. 231-236
Author(s):  
Rui Liu ◽  
Xiao Ping Tian
Keyword(s):  
Image Encryption ◽  
Digital Image ◽  
Image Watermarking ◽  
Chaotic Sequence ◽  
Experimental Results ◽  
Digital Image Watermarking ◽  
Image Scrambling ◽  
Bit Plane ◽  
Digital Image Encryption

Image scrambling is an important technique in digital image encryption and digital image watermarking. This paper proposes a new image scrambling method, which based on chaotic sequence and space-bit-plane operation (SBPO). First, every eight pixels from different areas of image were selected according to chaotic sequence, and grouped together to form a collection. Second, the SBPO was performed in every collection and built eight pixels of the image with new values. The scrambling image was generated when all pixels were processed. This method can scramble image not only based on the pixel’s position but also the value and their corresponding probability. The experimental results show that this scrambling method possesses perfect confusion properties and it can resist various attacks.

Component Fusion Image Encryption Method Based on Hybrid Chaotic Model

2019 ◽  
Vol 23 (1) ◽  
pp. 119-123
Author(s):  
Shuiqing Xiao ◽  
◽  
Songbo Wang ◽  
Caihong Ye ◽  
Yuan Gao
Keyword(s):  
Fixed Point ◽  
Image Encryption ◽  
Information Entropy ◽  
Chaotic Sequence ◽  
Mapping Method ◽  
Original Image ◽  
Fusion Image ◽  
Current Image ◽  
Chaotic Model ◽  
Encryption Method

The current image encryption method is relatively simple, and there is the problem of poor image encryption effect. Based on the hybrid chaotic model, an image encryption method with component fusion is proposed in this paper. The image is mapped by using Arnold cat mapping method. Chaotic sequence is generated by chaotic model, and the original image is scrambled and substituted to achieve image encryption. Through the fixed point ratio, information entropy, gray mean change value, autocorrelation and similarity, the test of encrypted image is completed. Experimental results show that the proposed image encryption method has good performance, high security intensity, and can effectively encrypt the image.

An Image Encryption Algorithm Based on Oversampled Chaotic Map

2013 ◽  
Vol 694-697 ◽  
pp. 2016-2020
Author(s):  
Shu Cong Liu ◽  
Yan Xing Song ◽  
Jing Song Yang
Keyword(s):  
Image Encryption ◽  
Chaotic Map ◽  
Chaotic Sequence ◽  
Transmission System ◽  
Encryption Algorithm ◽  
Chaotic Mapping ◽  
Key Space ◽  
Encryption And Decryption ◽  
Simulation Results ◽  
Image Encryption Algorithm

A new image encryption algorithm based on chaotic sequence is proposed, and the over sampled techniques is used in the Chebyshev mapping and Logistic chaotic mapping to generate multi-parameter chaotic key.A chaotic image encryption transmission system is build to achieve the encryption and decryption of the image signal,and the security and the encryption properties of the algorithm are analyzed. Simulation results show that the method ia simple and easy to achieve, and with larger key space ang good encryption effect.

An Encryption Algorithm by Scrambling Image with Sudoku Grids Matrix

2012 ◽  
Vol 433-440 ◽  
pp. 4645-4650 ◽  
Author(s):  
Yue Yue Wang ◽  
Dong Wan ◽  
Hong Yu Sheng
Keyword(s):  
Image Encryption ◽  
Encryption Algorithm ◽  
Natural Order ◽  
Secret Key ◽  
Simulation Experiments ◽  
Pixel Location ◽  
Pixel Value ◽  
Image Encryption Algorithm

An image encryption algorithm by scrambling both the pixel location and the pixel value with sudoku grids matrix is proposed in this paper. As there is a certain mapping mode Between the Natural order and the numeric order in the row, line and block in sudoku grids, the proposed algorithm adopts the sudoku grids as secret key and scrambles the image according to the certain mapping mode. The algorithm is suitable for image with any size. The simulation experiments show that it has good encryption efficiency and perfect encryption effects. Also the transferring attack can be distributed equally by the algorithm which has high robustness, and good restoration result is produced.

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