Multistage Image Encryption Based on TD-ERCS Chaotic System
Lai Min · Journal of Chengdu University · 2009
Due to the good properties of sensitivity,ergodic property and miscibility to initial conditions and parameters that chaos has and chaotic image encryption is a high efficient method,a multistage image encryption scheme was proposed based on Tangent Delay Ellipse Reflecting Cavity Map(TD-ERCS),which utilized TD-ERCS chaotic system to generate groups of discrete chaotic and chose one of groups to an address index list to scramble the positions of the image pixels in the spatial domain overall;then chose the remaining groups in a certain way to do the encryption operation byte by byte during the diffusion process of pixel values.The findings show that encryption scheme is good at concealing the relationship between the plain image and the encrypted image,and has high security to certain analysis and attack vectors.