Paper 2016/1120

Cryptanalysis of Reduced round SKINNY Block Cipher

Sadegh Sadeghi, Tahere Mohammadi, and Nasour Bagheri

Abstract

SKINNY is a family of lightweight tweakable block ciphers designed to have the smallest hardware footprint. In this paper, we present zero-correlation linear approximations and related-tweake impossible differential characteristics for different versions of SKINNY. We utilize meet-in-the-middle approach to construct 9-round and 10-round zero-correlation linear distinguisher. We also obtain 12-round related-tweakey impossible differential characteristics for both SKINNY-64 and 128 in TK1 model and TK2 model. To the best of our knowledge, the presented zero-correlation characteristics in this paper is the first investigation of the security of SKINNY against this attack.

Note: The FSE version

Metadata
Available format(s)
PDF
Category
Secret-key cryptography
Publication info
A minor revision of an IACR publication in FSE 2019
DOI
10.13154/tosc.v2018.i3.124-162
Keywords
SKINNYZero-correlation linear cryptanalysis
Contact author(s)
Na bagheri @ gmail com
History
2019-05-05: revised
2016-12-01: received
See all versions
Short URL
https://ia.cr/2016/1120
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2016/1120,
      author = {Sadegh Sadeghi and Tahere Mohammadi and Nasour Bagheri},
      title = {Cryptanalysis of Reduced round {SKINNY} Block Cipher},
      howpublished = {Cryptology {ePrint} Archive, Paper 2016/1120},
      year = {2016},
      doi = {10.13154/tosc.v2018.i3.124-162},
      url = {https://eprint.iacr.org/2016/1120}
}
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