A NOVEL ALGORITHM FOR SECURED TRANSMISSION OF SECRET DATA

The novel algorithm is an image encryption method based on bit plane slicing technique. The basic idea is to divide the critical secret image from satellites into four parts and these four parts of the image is then embedded into a dummy or cover image to prevent image abstraction or intrusions or hacking. The processed 4 images are then transmitted across the intended receiver. The receiver receives four dummy images which contains four parts of the critical secret image. These four parts of the image is then extracted using an algorithm and a access which again works on bit operations. The extracted images are then combined to reconstruct the critical secret image. This algorithm offers very low distortion between the actual image and the reconstructed image with cross correlations between two images being in the range 0.91 ? 0.99 thus indicating very high image retrieval and at the same time a secured transmission algorithm for critical secret satellite image transmission. The parameters used to test the robustness of the algorithm are Mean Square Error (MSE), Peak Signal to Noise Ratio (PSNR) and Normalized Cross-Correlation.