I would have liked to have seen some references to the research in the field in the explanation or comments. I wrote something like this around 15 years ago (h

I would have liked to have seen some references to the research in the field in the explanation or comments. I wrote something like this around 15 years ago (https://github.com/tokenrove/steaghan/; https://github.com/tokenrove/steaghan/; horribly broken, do not use) but quickly abandoned it when Niels Provos started doing much more sophisticated stuff (http://www.citi.umich.edu/u/provos/stego/ http://www.citi.umich.edu/u/provos/stego/). Since then, there has been a fair bit of really interesting research in the field; I recommend anyone interested read Peter Wayner's book Disappearing Cryptography. Might be a good place to start for enhancing this provocatively named framework.