New Impossible Differential Attacks of Reduced-Round Camellia-192 and Camellia-256

  title={New Impossible Differential Attacks of Reduced-Round Camellia-192 and Camellia-256},
  author={Jiazhe Chen and Keting Jia and Hongbo Yu and Xiaoyun Wang},
  booktitle={IACR Cryptology ePrint Archive},
Camellia is a block cipher selected as a standard by ISO/IEC, which has been analyzed by a number of cryptanalysts. In this paper, we propose several 6-round impossible differential paths of Camellia with the FL/FL−1 layer in the middle of them. With the impossible differential and a well-organized precomputational table, impossible differential attacks on 10-round Camellia-192 and 11-round Camellia-256 are given, and the time complexity are 2 and 2 respectively. An impossible differential… CONTINUE READING


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