Triple Image Encryption based on Integer Transform and Chaotic Map

This paper presents a triple image encryption based on integer transform and chaotic map. Most of image encryption algorithm employ the confusion-diffusion architecture and operate at the pixel level. In this paper uses the intrinsic features of the bit distributions of images, Expand and shrink strategy is employed to shuffle bit planes and perform conversion from triple image to 3 layered image, integer transform is applied and chaotic map is used to shuffle 3 layered image's in transform domain and reverse integer transform is performed to get triple encrypted images. Experiment is conducted for triple images using MATLAB software. From the experiment we obtained highly scrambled image at the end of encryption process. Decryption process employs exactly reverse process of encryption which results in the reconstructed images.