A Binary Image Encryption Algorithm Based on Coupled Logistic Chaotic Map
Zuzhen Feng · Journal of Guilin University of Electronic Technology · 2009
Image scrambling transformation is a common method utilized in information hiding for image encryption.However,as traditional image scrambling has certain regularity and periodicity,it can easily be broken by the attacker.Based on coupled logistic chaotic map,magic square transformation and Arnold transformation,a binary image encryption algorithm is proposed.Firstly,the image is transformed into magic square blocks.Secondly,the image is encrypted by exclusive OR algorithm with the binary sequences generated by the coupled logistic chaotic map,and then scrambled with Arnold transformation.The experiment result shows that it has low computational complexity,a large key space and good effect on encryption.The original image and the restored image have good identity.The encrypted image can resist the various attacks.