Color code encryption based on exclusive-OR operation and double random polarization encryption.

In this paper, a scheme of optical encryption system for color code is proposed which is based on double random polarization encryption and exclusive-OR operation. First, an original image is generated into a color code according to the rules of color code generation, then the color code is encoded by exclusive-OR operation, finally, the coded color code is used as the input image for double-random polarization encryption. The original image can be recovered only if all the keys are correct. If the ciphertext is tampered or cut, the image cannot be recovered or even displayed on the computer. This method can apply the double random polarization encryption method used for binary image encryption to color code encryption, and the exclusive-OR operation can improve the security of the system. Numerical experimental results show the feasibility and effectiveness of this method. [ABSTRACT FROM AUTHOR]