Image Steganography Based on Chaos Function and Randomize Function

The exchange of data is not limited to personal text information or about institutions and governments, but includes digital media transferred via the Internet including everything, whether texts, images videos audio, animation. These need high-security protection high speed during its transmission from one site another. In this study, a new method suggested for hiding gray-level image within larger color based on proposed steganography map that merged chaotic function randomize function. size chaos functions 16 bytes. Experimental results obtained successful mean squared error, signal-to-noise ratio, peak signal noise rate, embedding capacity, entropy, histogram. This can rapidly hide extract ciphertext in gray image. original stego are difficult distinguish because correlation between them very close 1, indicating attackers cannot easily differentiate these with naked eye. condition successfully Internet.