Implementation of Affine Transform Method and Advanced Hill Cipher for securing digital images

Digital image security aims to protect the image of the confidential access by parties that do not have the authority. Security on the research done by encrypting and decrypting digital image in PNG, BMP and JPEG using two methods are Affine Transform and Advanced Hill Cipher. Affine Transform method for scrambling pixel positions and methods Advanced Hill Cipher to change the pixel values. The safety analysis of the methods Affine Transform and Advanced Hill Cipher using entropy and the correlation coefficient. This study proves that the combined method Affine Transform and Advanced Hill Cipher can be merged to digital image information security.