A NEW GRAPHICAL METHOD FOR ENCRYPTION OF COMPUTER DATA
Charles L. Schwartz · Cryptologia · 1991
A new method for encryption of computer data (text, pictures, or binary files) makes use of a sequence of graphically generated inversions on the bit pattern, keyed to a pseudo-random number generator. The method is easy, fast and fun. Decryption requires knowledge of the secret code number used at encryption. The argument for “uncrackability” of this scheme is only heuristic; but I believe that it is practically immune from attack. I invite readers to see if they can prove otherwise.