Lower Bounds on the Number of Active Round Functions for a Class of Extended Generalized Feistel Structure

摘要:

扩展广义Feistel结构是近期提出的一类分组密码结构,为评估该类密码结构的安全性能,对4分组扩展广义Feistel结构抵抗差分密码分析的能力进行了详细的研究.在轮函数为双射的假设条件下,给出了任意轮差分特征中活动轮函数个数的下界.

Extended generalized Feistel structure has been proposed recently as a building structure of block cipher. To evaluate the security of this structure, the security analysis of four-block extended generalized Feistel structure against differen- tial and linear cryptanalysis is investigated in detail. Lower bounds on the number of active round functions for arbitrary round differential characteristics is given when round functions are all bijective.

作者:

殷勍 王念平

机构地区:

解放军信息工程大学密码工程学院

出处:

《betway官方app 学报：自然科学版》 CAS 北大核心 2015年第5期142-146,共5页

基金:

十二五国家密码基金(MMJJ201401007)

关键词:

展广义Feistel结构 差分密码分析 活动轮函数 下界

extended generalized Feistel structure differential cryptanalysis active round function lower bounds

分类号:

TN918.2 [电子电信—通信与信息系统]

一类扩展广义Feistel结构的活动轮函数个数的下界.pdf