About 2 years ago I have implemented the Steganalysis method based on paper &quot;Steganalysis by Subtractive Pixel Adjacency Matrix&quot; <a href="http:&#x2F;&#x2F;www.ws.binghamton.edu&#x2F;fridrich&#x2F;Research&#x2F;paper_6_dc.pdf" rel="nofollow">http:&#x2F;&#x2F;www.ws.binghamton.edu&#x2F;fridrich&#x2F;Research&#x2F;paper_6_dc.pd...</a>. The whole evaluation was done by embedding random messages and the method worked well so I guess encryption of the datastream won&#x27;t help much.