Differential Security Evaluation of Simeck with Dynamic Key-guessing Techniques

Kexin Qiao; Lei Hu; Siwei Sun

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Paper

Differential Security Evaluation of Simeck with Dynamic Key-guessing Techniques

Topics: Cryptographic Algorithms

In Proceedings of the 2nd International Conference on Information Systems Security and Privacy ICISSP - Volume 1, 74-84, 2016 , Rome, Italy

Authors: Kexin Qiao ; Lei Hu and Siwei Sun

Affiliation: Chinese Academy of Sciences, China

Keyword(s): Simeck, Dynamic Key-guessing, Differential Cryptanalysis.

Abstract: The Simeck family of lightweight block ciphers was proposed in CHES 2015 which combines the good design components from NSA designed ciphers SIMON and SPECK. Dynamic key-guessing techniques were proposed by Wang et al. to greatly reduce the key space guessed in differential cryptanalysis and work well on SIMON. In this paper, we implement the dynamic key-guessing techniques in a program to automatically give out the data in dynamic key-guessing procedure and thus simplify the security evaluation of SIMON and Simeck like block ciphers regarding differential attacks. We use the differentials from Kolbl ¨ et al.’s work and also a differential with lower Hamming weight we find using Mixed Integer Linear Programming method to attack Simeck. We improve the previous best results on all versions of Simeck by 2 rounds.

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Paper citation in several formats:

Qiao, K., Hu, L. and Sun, S. (2016). Differential Security Evaluation of Simeck with Dynamic Key-guessing Techniques. In Proceedings of the 2nd International Conference on Information Systems Security and Privacy - ICISSP; ISBN 978-989-758-167-0; ISSN 2184-4356, SciTePress, pages 74-84. DOI: 10.5220/0005684400740084

@conference{icissp16,
author={Kexin Qiao and Lei Hu and Siwei Sun},
title={Differential Security Evaluation of Simeck with Dynamic Key-guessing Techniques},
booktitle={Proceedings of the 2nd International Conference on Information Systems Security and Privacy - ICISSP},
year={2016},
pages={74-84},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005684400740084},
isbn={978-989-758-167-0},
issn={2184-4356},
}

TY - CONF

JO - Proceedings of the 2nd International Conference on Information Systems Security and Privacy - ICISSP
TI - Differential Security Evaluation of Simeck with Dynamic Key-guessing Techniques
SN - 978-989-758-167-0
IS - 2184-4356
AU - Qiao, K.
AU - Hu, L.
AU - Sun, S.
PY - 2016
SP - 74
EP - 84
DO - 10.5220/0005684400740084
PB - SciTePress