Encryption of Military Maps ImagesUsing Peter De Jong Chaotic Maps and Lightwaght Encryption

Because of the importance of the military maps in the transmission, and to keep them secure, a method for image encryption combining the chaotic map Peter DeJong map with a lightweight encryption algorithm is proposed to encrypt the military map images. Peter De Jong map is used to generate keys that are used with the lightweight encryption algorithm. The proposed method used Peter De Jong's map to generate numbers used in the pixel's permutation of the image. Then divide the image into blocks to apply the key numbers of lightweight encryption, then combine all blocks to get the encrypted image. The technique has been applied to a set of militarymap images. The tests used two approaches represented by generated key and encrypted image, and the results were efficient in all tests such as the correlation of the encrypted image in horizontal, vertical, and diagonal directions for original and encrypted images. The obtainedresult showsno correlations between the original and encrypted image. The quality of the images has been evaluated by calculating different metries for the original and encrypted images, such as MSE, PSNR, and SSIM. The Entropy of the encrypted image was measured, and it was the same as the original image values. The proposed method achieved an appropriate complexity commensurate with the requirements of the times in the transmission of images.