ZippyV wrote:With images, you can't have a public and a private key to encrypt/decrypt messages.
Couldn't you use one image to transform the document, and then use another to transform it again...except one image would be public, and the other could be private...(?)
I think you must really learn the RSA algorithm. (You will really forget this idea)
I recommend you read Practical Cryptography by Niels Ferguson and Bruce Schneier (http://www.schneier.com/book-practical.html). It will shed a lot of light on cryptography, including why your idea, whilst novel, is not practical.
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