Related Key Differential Attacks on 27 Rounds of XTEA and Full-Round GOST

@inproceedings{Ko2004RelatedKD,
  title={Related Key Differential Attacks on 27 Rounds of XTEA and Full-Round GOST},
  author={Youngdai Ko and Seokhie Hong and Wonil Lee and Sangjin Lee and Ju-Sung Kang},
  booktitle={FSE},
  year={2004}
}
In this paper, we present a related key truncated differential attack on 27 rounds of XTEA which is the best known attack so far. [] Key Method First, we present a distinguishing attack on full-round GOST, which can distinguish it from a random permutation with probability 1 - 2 -64 using a related key differential characteristic. We also show that H. Seki et al.'s idea combined with our related key differential characteristic can be applied to attack 31 rounds of GOST .

Reflection Cryptanalysis of Some Ciphers

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Reflection Cryptanalysis of Some Ciphers

  • Orhun Kara
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    INDOCRYPT
  • 2008
The attack method exploits certain similarities among round functions which have not been utilized in the previous self-similarity attacks to mount the reflection attack on some ciphers such as GOST, DEAL and a variant of DES.

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Related-Key Rectangle Attack on 43-Round SHACAL-2

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Three-Subset Meet-in-the-Middle Attack on Reduced XTEA

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  • Jongsung Kim
  • Computer Science, Mathematics
    IACR Cryptol. ePrint Arch.
  • 2006
This thesis provides several new combined differential, linear and related-key attacks, and shows their applications to block ciphers, hash functions in encryption mode and message authentication code (MAC) algorithms.

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This paper extends the slide attack by examining the cycle structures of the entire cipher and of the underlying keyed permutation, and allows to find slid pairs much faster than was previously known, and hence reduces the time complexity of the whole slide attack significantly.

Related-Key Rectangle Attacks on Reduced AES-192 and AES-256

These attacks reduce the complexity of earlier attacks presented at FSE 2005 and Eurocrypt 2005: for reduced AES-192 with 8 rounds, the required number of related keys are decreased from 4 to 2 at the cost of a higher data and time complexity and the first shortcut attack on AES- 192 reduced to 10 rounds is presented.

Cryptanalysis of Block Ciphers

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