Extended image encryption algorithm
Jiulun Fan · Computer Engineering and Applications Journal · 2007
In order to renew the image that is attacked by shear transformation,an extended digital image encryption algorithm is proposed based on chaotic sequences.This approach encrypts digital image by permuting on bitmap after pretreatment,and decryption pixels' values of the image which is attacked by shear transformation is computed by using neighboring pixels' values,it can protect the encryption image from shear transformation attack.A binary sequence nonlinear generating method based on chaotic system is also presented.The experimental results indicate the algorithm has a good efficiency.