I had an idea the other day...and although I do not know a great deal about the fine art of encryption, I thought I would play around with the idea anyway. I did a little research into file formats (bitmaps in particular), and basic encryption methods.
My question: would it be viable to take something as simple as a picture (with a high range of colors) and use it to encrypt a document? For instance, if you have a bitmap of something complicated (like a picture of a forest), and XOR'ed it or ANDed or even
added each pixel value (RGB?) to individual ASCII/Unicode characters in a document, wouldn't that be more difficult to "crack" than using random/pseudo random number generators or a formulaic method? This is a somewhat crude and simple example, but you get
the idea. Basically, without the picture, good luck reading the document. Maybe this has been done before, I don't know. You could probably even use sound waves/file formats, too. I'll keep reading and researching...