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Image encryption using Queen
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PRE
AI
DOI：10.1007/s11042-023-15674-6.png)
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Abstract
En 中文
A high performance scrambler (HPS) is presented to encrypt the color square images based on the sophisticated move of Queen on the large hypothetical chessboard. The input plain image is broken into the red, green and blue channels. The pixels of each channel are scrambled by the Queen one by one. Then diffusion effects have been thrown in the scrambled images to get the encrypted images. The final color cipher image has been obtained by merging the cipher images of these three channels. Plaintext sensitivity has been created by the SHA-256 hash function and by making starting address of the Queen dependent upon the randomly chosen pixels from the input plain image. This act also increased the key space. Intertwining logistic map has been employed to get the chaotic vectors. Both the experiments on the computer machine and the security analysis vividly certify efficiency, security and potential for some real world application of the proposed image cipher. The information entropy came out to be 7.9974. Besides, the floating frequency security parameter gave very promising results regarding the uniformly random pixels data in the output encrypted image. Moreover, time complexity of the proposed cipher is very competitive.
Keywords:
Encryption
Decryption
Image processing
Chess
Queen
Chaos
Journal
IF:
3
Papers:
1.9W
Citations:
3.2W