Stega is a simple steganography tool that allows you to losslessly embed messages into images. The image that comes back is same as the original.
The only requirement is that you use a lossless image format, so no jpeg images will work.
This implementation was adapted from a paper titled "Lossless Data Hiding in the Spatial Domain for High Quality Images", written by Hong Lin Jin, Masaaki Fujiyoshi, and Hitoshi Kiya
Usage:
image = Image.new('RGB', (111, 111))
msg = "What hath God wrought. "
s = Stega(image)
s.add_message(msg)
im, message = s.extract()
assert message == msg
Run tests:
$ ./runtests