Image encryption method based on sine mapping and Logistic chaos sequence
A technology of chaotic sequence and encryption method, which is applied in the field of image encryption and information security, can solve the problem that the chaotic system cannot meet the requirements of image encryption, and achieve the effect of good anti-plaintext attack and large key space
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[0026] A preferred embodiment of an image encryption method based on a sinusoidal map and a Logistic chaotic system involved in the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to this embodiment. In order to provide the public with a thorough understanding of the present invention, specific details are set forth in the following preferred embodiments of the present invention.
[0027] In the Matlab7.1 environment, the 240×358 hill grayscale image is encrypted and decrypted.
[0028] figure 1 Process flow chart for image encryption based on sine map and logistic chaotic sequence.
[0029] like figure 1 As shown, the process flow of image encryption based on sine map and Logistic chaotic sequence is to encrypt digital grayscale images by the following specific steps.
[0030] Step S1-101:
[0031] Select the m×n grayscale image Q as the original image, and obtain the image pixel val...
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