Steganography is the process of hiding data inside a file, image, video, or another piece of data. For example, in watermarking you hide a copyright statement inside an image to later show that you own the rights to that file.
Write a program that defines Bitmap extension methods to perform steganography. The program should let the user load an image, hide a message in it, and save the result in a new image file. It should also be able to load an image and recover a message hidden inside it.
Hide the data in the low-order bits of the image's pixels. You don't need to encrypt the message for this problem; just hide it.
Use a lossless image format such as BMP or PNG. A lossy format such as GIF or JPG will destroy the message.