Image Encryption Algorithm Based on High Dimensional Chaotic Cat Maps
Xu Li · Journal of Xi'an University of Technology · 2012
A 4D dimensional extensive cat map and a novel fast image encryption algorithm based on the map are proposed in this paper.The 3D extensive cat map is extended to a 4D extensive cat map.The pixel coordinates and the grey values of images can be used as the initial conditions of the 4D extensive cat map,and the mapping parameters and the number of iteration can be used as the secret keys to achieve image encryption.In comparison with the usual low dimension chaotic cat map encryption algorithm,this algorithm is of higher security and faster encryption speed.It can be used as a sub-model in the encryption system,which can be served for encryption transmissions of images,data blocks and visual images in conventional networks as well as wireless sensor networks with the medium or high speed.