A Novel CDMA-Based Secret Message Multiplexing Scheme by Image Data Hiding

In this paper, based on the concept of Code Division Multiple Access (CDMA), we propose an innovative secret message multiplexing scheme by digital image data hiding. messages distributed for several participants are encoded into a CDMA codeword through and then embedded grayscale image. At receiving side, each intended recipient will be assigned distinct spreading code as key extraction. way, even authorized user can only extract his or her own using exclusive has no knowledge about other user’s secret. This characteristic helps to ensure security. Experimental results demonstrate that is also resistant Gaussian noise attack, salt-and-pepper cropping attacks. Those merits sustain feasibility proposed scheme.