Differential analysis of the Extended Generalized Feistel Networks | |
Zhang, Lei (1) ; Wu, Wenling (1) | |
刊名 | Information Processing Letters
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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. |
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