Steganography with Hash

This paper presents a novel LSB steganographic scheme which attempts to defeat statistical steganalysis. The embedding distortion introduced to the cover image is small for perceptual and statistical detection. The modification of image pixel values for embedding is just like conventional image processing which is capable of resisting all kinds of LSB steganalysis attacks such as the Chi-Squre test, Isotropy based steganalysis attack and optimal estimation attack, etc. The image processing could be smoothing operations, such as linear filter etc. The parity of a block of image pixels' hash value could represent the embedded secret message. Experimental results are presented to demonstrate the effectiveness of the method.