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Paper: On the Data Complexity of Statistical Attacks Against Block Ciphers (full version)

Authors:
Céline Blondeau
Benoît Gérard
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URL: http://eprint.iacr.org/2009/064
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Abstract: Many attacks on iterated block ciphers rely on statistical considerations using plaintext/ciphertext pairs to distinguish some part of the cipher from a random permutation. We provide here a simple formula for estimating the amount of plaintext/ciphertext pairs which is needed for such distinguishers and which applies to a lot of different scenarios (linear cryptanalysis, differential-linear cryptanalysis, differential/truncated differential/impossible differential cryptanalysis). The asymptotic data complexities of all these attacks are then derived. Moreover, we give an efficient algorithm for computing the data complexity accurately.
BibTeX
@misc{eprint-2009-18241,
  title={On the Data Complexity of Statistical Attacks Against Block Ciphers (full version)},
  booktitle={IACR Eprint archive},
  keywords={secret-key cryptography / statistical cryptanalysis, iterated block cipher, data complexity.},
  url={http://eprint.iacr.org/2009/064},
  note={ celine.blondeau@inria.fr 14287 received 9 Feb 2009, last revised 12 Feb 2009},
  author={Céline Blondeau and Benoît Gérard},
  year=2009
}