A method and system for determining integrity of images is disclosed herein. The method includes determining the integrity of a non-image data of an image file. The method of protecting images comprises: obtaining an image file having both image data and non-image data and generating at least one code based on the non-image data at the time of creation of the image file. The code is incorporated into the image data of the image file in a visually non-detectable format. In an example, a digital watermarking technique is used to incorporate the code into the image data.