Image information encryption and decryption method based on improved Arnold transformation and LSB
A technology of image information and encryption method, which is applied in the field of information hiding, can solve the problems of controlled image pixel distribution, different hiding schemes, and no solution, etc., and achieve the effect of enhancing confidentiality
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[0051] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0052] For the convenience of description, the main variables in the simple definition algorithm are: hidden information image A, background image B, and encrypted image C generated after embedding, where height represents the height of the image, width represents the width of the image, and A.width represents A The width of the image, A.height indicates the height of the A image. The same is true for B and C images. Among them, the user needs to enter two keys, key1 and key2, and the encryption position is No. 1 or No. 2;
[0053] figure 1 It is a schematic diagram of encryption and decryption of the present invention. This method first uses the improved Arnold transform to preprocess the image, and then uses the LSB algorithm to embed it in the ...
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