中国人民解放军战略支援部队信息工程大学,河南郑州450001
[ "杨继林 男,1986年10月出生,江苏连云港人.2008年毕业于沈阳理工大学信息与计算科学专业,2017年进入解放军信息工程大学,2019年获密码学专业硕士学位,从事分组密码的设计与分析方面的有关研究." ]
[ "王念平(通信作者) 男,1973年6月出生,河南洛阳人.博士、教授、博士生导师.分别于2001年、2008年在解放军信息工程大学获硕士、博士学位.主要从事密码学和信息安全等方面的研究工作." ]
收稿:2018-11-07,
修回:2021-10-06,
纸质出版:2021-11-25
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杨继林,王念平.类CLEFIA动态密码结构抵抗差分密码分析能力评估[J].电子学报,2021,49(11):2279-2283.
YANG Ji-lin,WANG Nian-ping.Security Evaluation Against Differential Cryptanalysis for CLEFIA-like Dynamic Cryptographic Structure[J].ACTA ELECTRONICA SINICA,2021,49(11):2279-2283.
杨继林,王念平.类CLEFIA动态密码结构抵抗差分密码分析能力评估[J].电子学报,2021,49(11):2279-2283. DOI: 10.12263/DZXB.20180973.
YANG Ji-lin,WANG Nian-ping.Security Evaluation Against Differential Cryptanalysis for CLEFIA-like Dynamic Cryptographic Structure[J].ACTA ELECTRONICA SINICA,2021,49(11):2279-2283. DOI: 10.12263/DZXB.20180973.
将动态思想融入分组密码设计,使得算法具有动态性能从而提高抗攻击能力,按照这种想法,本文提出“类CLEFIA动态密码结构”,并通过建立两类不同密码结构的差分对应之间的联系,给出类CLEFIA动态密码结构的差分密码分析结果.具体地,对4
r
(
r
≥1)轮类CLEFIA动态密码结构,在轮函数都是双射时,证明了
l
(
l
≥1)轮差分特征至少有
l
-1个活动轮函数.
Based on the idea to integrate the dynamic idea into the block cipher design to make the algorithm have dynamic performance and to improve the anti-attack ability
CLEFIA-like dynamic cryptographic structure is put forward in this paper. By establishing the relation between differential correspondences of two classes of cryptographic structures
the ability of CLEFIA-like dynamic cryptographic structure to resist differential cryptanalysis is given. Concretely
for 4
r
(
r
≥1)-round CLEFIA-like dynamic cryptographic structure
if the round functions are all bijective
then the number of active round functions for
l
-round differential characteristic is not less than
l
-1.
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