Design and Analysis of a Digital Image Encryption System Based on Spatiotemporal Chaos
Yong Liu · 2006
In this paper, a digital image encryption system is presented based on spatiotemporal chaos, in which a 128 bits secret key is divided into two halves subkey to derive two deferent chaotic systems respectively, in order to generate spatiotemporal chaotic sequence matrix, and this matrix will be XOR processed with the source image later. The analysis results indicate that this encryption system can be fast easily implemented, and has a large key space. Moreover, this system is also very sensitive to the secret key, by introducing the nature feature of the chaos into the design of the system such as the sensitivities with respect to initialconditions and control parameters. In last, the encryption system designed in this paper can be widely applied to the digital image encryption transmission in Internet.