New Impossible Differential Cryptanalysis of ARIA

  title={New Impossible Differential Cryptanalysis of ARIA},
  author={Ruilin Li and Bing Sun and Peng Zhang and Chao Li},
  journal={IACR Cryptology ePrint Archive},
This paper studies the security of ARIA against impossible differential cryptanalysis. Firstly an algorithm is given to find many new 4-round impossible differentials of ARIA. Followed by such impossible differentials, we improve the previous impossible differential attack on 5/6-round ARIA. We also point out that the existence of such impossible differentials are due to the bad properties of the binary matrix employed in the diffusion layer. 

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