Fast And Secure Image Encryption System For Real TimeApplications And Mobile Communications

The strength of image encryption systems are depending on confusion (change the pixelposition ) and diffusion(change the pixel value) and most of researchers separate theseoperations and perform these in cascading form with different algorithms, so there are somedrawbacks in this cryptosystem and may be cryptanalyzed soon. In this paper proposed imageencryption system based on chaotic map due to special properties of chaotic theory, such aspseudo-randomness, no periodicity and sensitivity to initial conditions. The two operationsconfusion-diffusion are processed in same loop based on two dimension chaotic standard mapwith different secret keys. Experimental results show that the proposed scheme has high securityand computationally secure , it withstands different types of attacks such as statistical attack,differential attack and brute force attack and the processing time of encryption is high (0.29second) which is suitable for mobile communication and real time applications