In view of the storage characteristic of color images

in order to extend the effect and security of image encryption algorithm.A color image encryption algorithm based on the three-dimension chaotic system was proposed.Firstly

the chaotic sequence were adopted by the three-dimension chaotic system.Then a color image was encrypted in space domain by using composite encryption algorithm.Using MATALAB7.0 carried out simulation.Theoretical analysis and simulated experiment show that

algorithm guarantees the security of the encryption effectively and excellent effect of encryption.If reduces the computation

the algorithm can be used widely in military satellite images

trade secret drawings

long-range private medical that wanted to be kept confidential communications.