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Efficient Technique for image Cryptography Using Sudoku Keys

Computers, Materials & Continua 2023年第10期77卷 1325-1353页

作者： M.A.P.Manimekalai M.Karthikeyan i.thusnavis bella mary K.Martin Sagayam Ahmed A Elngar Unai Fernandez-Gamiz Hatıra Günerhan Department of ECE Karunya Institute of Technology and SciencesCoimbatore641114India Faculty of Computer and Artificial intelligence Beni-Suef UniversityBeni-Suef62511Egypt Nuclear Engineering and Fluid Mechanics Department University of the Basque CountryBilbao48940Spain Department of Mathematics Faculty of EducationKafkas UniversityKars36100Turkey

This paper proposes a cryptographic technique on images based on the Sudoku *** is a number puzzle,which needs applying defined protocols and filling the empty boxes with *** a small size of numbers as input,solving the sudoku puzzle yields an expanded big size of numbers,which can be used as a key for the Encryption/Decryption of *** this way,the given small size of numbers can be stored as the prime key,which means the key is compact.A prime key clue in the sudoku puzzle always leads to only one solution,which means the key is always *** feature is the background for the paper,where the Sudoku puzzle output can be innovatively introduced in image *** solution is expanded to any size image using a sequence of expansion techniques that involve filling of the number matrix,Linear X-Y rotational shifting,and reverse shifting based on a standard zig-zag *** crypto key for an image dictates the details of positions,where the image pixels have to be *** is made at two levels,namely pixel and sub-pixel(RGB)levels for an image,with the latter having more effective *** brought-out technique falls under the image scrambling method with partial *** metrics are impressive and are given by a Histogram deviation of 0.997,a Correlation coefficient of 10−2 and an NPCR of 99.98%.Hence,it is evident that the image cryptography with the sudoku kept in place is more efficient against Plaintext and Differential attacks.

关键词： Sudoku image cryptography pixels performance metrics

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