Linear Cryptanalysis of LOKI and s2DES

@inproceedings{Tokita1994LinearCO,
  title={Linear Cryptanalysis of LOKI and s2DES},
  author={Toshio Tokita and Tohru Sorimachi and Mitsuru Matsui},
  booktitle={ASIACRYPT},
  year={1994}
}
Abs t rac t . This paper discusses linear cryptana]ysis of LOKI89, LOKI9] and s2DES. Our computer program based on Matsui's search algorithm has completely determined their best linear approximate equations, which tell us applicability of linear cryptanalysis to each cryptosystem. As a re= sult, LOKI89 and LOKI91 are resistant to linear cryptanalysis from the viewpoint of the best linear approximate probability, whereas s2DES is breakable by a known=plaintext attack faster than an exhaustive… CONTINUE READING

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