New Image Encryption Method Based on two Stage Scrambling

Abstract

The purpose of  digital image scrambling technology is to put a meaningful image into a disordered one to enhance the resistance ability against illegal attacks. This paper proposed an image scrambling algorithm based on idea of movement of elephant in the chess board the system consist of two main steps the first one rotate  each diagonal by  key generated from computing the standard deviation the second step   include exchange the upper half of image with the lower half of image the proposed system shows a good result and we reach 100 percent accuracy in decryption thus the proposed system can be used by any application for secure transmitting.