Abstract
Over the past years an enormous variety of different chaos-based image and video encryption algorithms have been proposed and published. While any algorithm published undergoes some more or less strict experimental security analysis, many of those schemes are being broken in subsequent publications. In this work it is shown that three issues wrt. chaos-based encryption security considerations severely question the soundness of these techniques. It is experimentally demonstrated that obviously weak (i.e. insecure) encryption schemes do not consistently fail commonly used tests to assess chaos-based encryption security and thus, passing these test is only a necessary condition for a secure scheme, but by no means a sufficient one. Security analysis of chaos-based encryption schemes needs to be entirely reconsidered.
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