Chaotic encryption algorithm for color topographic maps based on Shear transform
Lin Li · Modern Electronics Technique · 2014
A chaotic encryption algorithm for color topographic maps,which is based on the shear transform,is proposed to solve the problems that image encryption algorithms for topographic maps is less studied and the existing image encryption algorithm is easy to decode.This algorithm makes full use of the multi-direction features of Shear transform,the characteristic of effectively scrambling the feature information of lines in topographic maps,and the characteristics that the Lorenz chaotic system is extremely sensitive to the initial value,has larger key space and security.The encryption and decryption experiments for color topographic maps indicate that the proposed algorithm has higher security and strong resistance to various attacks.