A Video Encryption Method Based on Chaotic Cryptography Incompatible Video Coding
A technology of video coding and chaotic cipher, which is applied in the direction of secure communication through chaotic signals, selective content distribution, digital transmission system, etc., which can solve problems such as inability to play, and achieve the effect of enhancing security and resisting violent attacks
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[0015] In order to better understand the present invention, some basic concepts are firstly explained.
[0016] 1. Logistic mapping:
[0017] Logistic mapping is a classic model for studying the behavior of complex systems such as dynamical systems, chaos, and fractals, and iterates repeatedly according to the following equation (1):
[0018] x(t+1)=μx(t)(1-x(t)) (1)
[0019] t is the iterative time step, in order to ensure that the x(t) obtained by any number of iterations is always in [0, 1], then μ∈[0,4].
[0020] 2. Arnold Cat mapping
[0021] In mathematics, the Arnold Cat map is named after Vladimir Arnold, who demonstrated its effect in the 1960s using images of cats, hence the name. The Arnold Cat transformation is used to shuffle the pixel value position of the color image, but cannot change the value of the image pixel. That is, the pixel position is transformed by Arnold Cat mapping, and the image is encrypted by scrambling. Equation (2) is used for image encry...
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