Paper 2016/1137 Original: eprint.iacr.org/2016/1137 ↗

New Impossible Differential Characteristic of SPECK64 using MILP

HoChang Lee
HyungChul Kang
Deukjo Hong
Jaechul Sung
Seokhie Hong
Abstract

Impossible differential attack is one of powerful methods for analyzing block ciphers. When designing block ciphers, it must be safe for impossible differential attacks. In case of impossible differential attack, the attack starts from finding the impossible differential characteristic. However, in the case of the ARX-based block cipher, these analyzes were difficult due to the addition of modulus. In this paper, we introduce 157 new six-round impossible differential characteristics of ARX-basef block cipher, SPECK64, using Mixed Integer Linear Programming (MILP) base impossible differential characteristic search proposed by Cui [3] etc.

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Available format(s)
PDF
Publication info
Preprint.
History
2016-12-21: last updated
2016-12-14: published
Short URL
https://ia.cr/2016/1137
License
https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2016/1137,
      author = {HoChang Lee and HyungChul Kang and Deukjo Hong and Jaechul Sung and Seokhie Hong},
      title = {New Impossible Differential Characteristic of SPECK64 using MILP},
      howpublished = {Cryptology {ePrint} Archive, Paper 2016/1137},
      year = {2016},
      url = {https://eprint.iacr.org/2016/1137}
}
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