Abstract
This new algorithm employs shuffling procedures combined with variable-length key-dependent XOR and S-box substitutions to perform lossless image encryption. This algorithm was implemented and tested by performing different permutations of shuffling, XOR encryption and S-box substitution. Empirical analysis using different types of test images of different sizes showed that this new algorithm is effective and resistant to statistical attacks. The idea presented by this algorithm may be generalized to apply to input data other than images and may be combined with other encryption methods.
Highlights
Wang and Wang (2012) have introduced an image encryption algorithm based on couple multiple chaotic systems
The simulation results showed that the scheme has high performance, so it has a potential value in the field of image encryption and image transmission
As seen in the figure, using XOR without S-box generally gave the highest value of all four encryption combinations, while other encryption combinations gave values similar to each other. This observation is supported by the average correlation value computed for each operation combination, shown in the third column of Table 2, where the average was taken for the absolute values of correlation for the sample images
Summary
Cryptography is an essential field of computer security used for protecting the confidentiality, integrity and availability of information. Wang and Wang (2012) have introduced an image encryption algorithm based on couple multiple chaotic systems. These steps are shuffling, partitioning with XOR groups operation and S-box substitution. The second step partitions the result into variable length blocks of key-dependent sizes and performs XOR encryption on these blocks.
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