Mathematicians Encrypt Images Using Mathematics of Sudoku

1684 possible Sudoku matrices, it's not easy for an adversary to hit on the solution by accident or even by brute force. 

Wu and co make no claims about its potential security but there is clearly room for further exploration here. 

Amazing what Sudoku can do for humankind!

Ref: arxiv.org/abs/1207.5856: Sudoku Associated Two Dimensional Bijections for Image Scrambling 

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