Differential analysis of the Extended Generalized Feistel Networks

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	Differential analysis of the Extended Generalized Feistel Networks
	Zhang, Lei (1) ; Wu, Wenling (1)
刊名	Information Processing Letters
	2014
卷号	114 期号:12 页码:723-727
ISSN号	200190
通讯作者	Zhang, L.(zhanglei@tca.iscas.ac.cn)
中文摘要	This paper studies the differential analysis of Extended Generalized Feistel Networks (EGFNs). First we construct a class of differential characteristics which conflict with designers' evaluation of minimal number of active S-boxes for EGFN. Then by analyzing the difference cancellation property of EGFN, we propose a method to search a special type of differential characteristics with high probability. We obtain the best case of this kind of differential characteristic for EGFN with block number 4≤k≤32. Our results show that for EGFN with k≥8 there always exist high probability iterative differential characteristics and their number of active S-boxes for 20-round all are equal to 26. Therefore, the actual ability of EGFN resisting differential analysis may be a lot weaker than evaluated by designers and larger block size cannot improve the situation. © 2014 Elsevier B.V.
英文摘要	This paper studies the differential analysis of Extended Generalized Feistel Networks (EGFNs). First we construct a class of differential characteristics which conflict with designers' evaluation of minimal number of active S-boxes for EGFN. Then by analyzing the difference cancellation property of EGFN, we propose a method to search a special type of differential characteristics with high probability. We obtain the best case of this kind of differential characteristic for EGFN with block number 4≤k≤32. Our results show that for EGFN with k≥8 there always exist high probability iterative differential characteristics and their number of active S-boxes for 20-round all are equal to 26. Therefore, the actual ability of EGFN resisting differential analysis may be a lot weaker than evaluated by designers and larger block size cannot improve the situation. © 2014 Elsevier B.V.
收录类别	EI
语种	英语
WOS记录号	WOS:000341903300015
公开日期	2014-12-16
内容类型	期刊论文
源URL	[http://ir.iscas.ac.cn/handle/311060/17032]
专题	软件研究所_软件所图书馆_期刊论文
推荐引用方式 GB/T 7714	Zhang, Lei ,Wu, Wenling . Differential analysis of the Extended Generalized Feistel Networks[J]. Information Processing Letters,2014,114(12):723-727.
APA	Zhang, Lei ,&Wu, Wenling .(2014).Differential analysis of the Extended Generalized Feistel Networks.Information Processing Letters,114(12),723-727.
MLA	Zhang, Lei ,et al."Differential analysis of the Extended Generalized Feistel Networks".Information Processing Letters 114.12(2014):723-727.