A new compound mode of confusion and diffusion for block encryption of image based on chaos. (English) Zbl 1222.94013
Summary: A block encryption for image using combination of confusion and diffusion is proposed in this paper. In this encryption, a new compound mode is proposed. Baker map is used to generate a pseudo-random sequence, and several one-dimension chaotic maps are dynamically selected to encrypt blocks of image, in the order of the pseudo-random sequence generated by Baker map. Different with other combined encryptions, the algorithm of this encryption does not confusion original image directly, but generate a pseudo-random, which is used as a route for diffusion, combines pixels to block randomly and arrays them. When diffusion is executing, for mutual diffusion of pixels, the confusion is working by the pseudo-random order of route, the combination is deep-seated.
|94A08||Image processing (compression, reconstruction, etc.)|
|65C10||Random number generation (numerical analysis)|
|37D45||Strange attractors, chaotic dynamics|
|37N35||Dynamical systems in control|