IMAGE SPLITTING AND RECONSTRUCTION FOR SECRET COMMUNICATION

Abstract

In this paper Image splitting for secure storage and communication has been considered through two different techniques. Firstly it is shown how by using a Linear Feedback Shift Register (LFSR), an image can be split in such a way that none of the split parts make any sense on its own, but when all the split parts are superimposed modulo-2, the original image emerges. Secondly we generalize the splitting technique using two-dimensional programmable Hybrid Cellular Automata. Cellular Automata based splitting techniques provide a more difficult to break scheme and the number of split parts can be increased to a very large number adding flexibility and security to the distribution scheme to different agents. Implementation of both the schemes has been carried out and results are demonstrated. 2