International Association for Cryptologic Research

International Association
for Cryptologic Research


Paper: New Impossible Differential Cryptanalysis of ARIA

Ruilin Li
Bing Sun
Peng Zhang
Chao Li
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Abstract: 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.
  title={New Impossible Differential Cryptanalysis of ARIA},
  booktitle={IACR Eprint archive},
  keywords={secret-key cryptography / Block Cipher, Impossible Differential, ARIA},
  note={unpublished paper 14028 received 19 May 2008, last revised 29 May 2008},
  author={Ruilin Li and Bing Sun and Peng Zhang and Chao Li},