Differential Security Evaluation of Simeck with Dynamic Key-guessing Techniques

Kexin Qiao, Lei Hu, Siwei Sun

2016

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.

Paper Citation

in Harvard Style

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 - Volume 1: ICISSP, ISBN 978-989-758-167-0, pages 74-84. DOI: 10.5220/0005684400740084

in Bibtex Style

@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 - Volume 1: ICISSP,},
year={2016},
pages={74-84},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005684400740084},
isbn={978-989-758-167-0},
}

in EndNote Style

TY - CONF
JO - Proceedings of the 2nd International Conference on Information Systems Security and Privacy - Volume 1: ICISSP,
TI - Differential Security Evaluation of Simeck with Dynamic Key-guessing Techniques
SN - 978-989-758-167-0
AU - Qiao K.
AU - Hu L.
AU - Sun S.
PY - 2016
SP - 74
EP - 84
DO - 10.5220/0005684400740084