Color Image Encryption and Decryption using Pixel Shuffling with Henon Chaotic System
Asia Mahdi Naser · 2014
Nowadays, with the incredible development of internet technologies and wireless communication networks such as computer and mobile networks, all kinds of multimedia data like digital image, Audio, text and video can be accessed in easily way on internet. As a result, cryptographic techniques are required to accomplish a certain level of security, integrity, confidentiality and as well as, to prevent unauthorized access of sensitive information during data storage and transmission. In this research, a novel and efficient color image encryption and decryption schemes has been suggested based on image pixels scrambling by iteratively dividing it in sixty four blocks and rotate each one in clockwise direction with 90 angles. Then applied two dimensions Arnold cat mapping to make more distortion of the relationship among adjacent pixels of original image by hide the statistical structure of pixels. Actually, the location of the image pixels is again reordered back to their original location in decryption operation. Image encryption is performed by using Henon mapping system to diffuse the correlation between crypto-image and plain-image. The presented encryption Algorithm As mentioned in this work has been tested and analysis on some color images and the results showed a significant security and validity to resistance the statistical and differential attacks