An Image Encryption Method Based on Feistel Network and Dynamic DNA Coding
An encryption method and encoding technology, applied to secure communication and key distribution through chaotic signals, can solve the problems of bit position change and failure to achieve diffusion
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[0068] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0069] Such as figure 1 Shown, a kind of image encryption method based on Feistel network and dynamic DNA coding, its steps are as follows:
[0070] Step 1: Convert the grayscale image of size m×n into a two-dimensional image matrix I of size m×n 1 .
[0071] Step 2: Calculate the image matrix I using the Keccak algorithm of the hash function 1 The hash value K1 of the chaotic system is obtained through the hash value K1, and the initial value is brought in...
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