On the Complexity of Matsui's Attack

  title={On the Complexity of Matsui's Attack},
  author={Pascal Junod},
  booktitle={Selected Areas in Cryptography},
Linear cryptanalysis remains the most powerful attack against DES at this time. Given 2 known plaintext-ciphertext pairs, Matsui expected a complexity of less than 2 DES evaluations in 85 % of the cases for recovering the key. In this paper, we present a theoretical and experimental complexity analysis of this attack, which has been simulated 21 times using the idle time of several computers. The experimental results suggest a complexity upper-bounded by 2 DES evaluations in 85 % of the case… CONTINUE READING

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