Analysis and Improvement of Image Encryption Algorithm Based Translation Chaotic System

Abstract

In this paper, we propose and improvement the translation chaotic system is applied to the field of image encryption and decryption, which is analyzed for Lena image. For the cryptographic system studied, firstly, the row and column of the image are used to map the correlation between pixels by Logistic mapping. Secondly, we use the translation chaotic system to mix the structure and pixel of the image to generate the key stream. Finally, the simulation results show that the encryption part proposed in this paper can be completed without knowing anything about the image key. In the decryption section, we only need to know the initial value set in the encryption system to completely crack the encryption system.