电子学报 ›› 2017, Vol. 45 ›› Issue (10): 2528-2532.DOI: 10.3969/j.issn.0372-2112.2017.10.030

• 学术论文 • 上一篇    下一篇

四分组类CLEFIA变换簇抵抗差分密码分析的安全性评估

王念平   

  1. 解放军信息工程大学密码工程学院, 河南郑州 450001
  • 收稿日期:2016-01-22 修回日期:2017-05-26 出版日期:2017-10-25
    • 作者简介:
    • 王念平,男,1973年生于河南洛阳,博士,教授,博士生导师,主要研究领域为密码学和信息安全.E-mail:wwnnpp@126.com
    • 基金资助:
    • 国家自然科学基金 (No.61672031,No.61402523,No.61572516)

Security Evaluation Against Differential Cryptanalysis for Four-Block CLEFIA-Like Transform Cluster

WANG Nian-ping   

  1. School of Cryptography Engineering, the PLA Information Engineering University, Zhengzhou, Henan 450001, China
  • Received:2016-01-22 Revised:2017-05-26 Online:2017-10-25 Published:2017-10-25
    • Supported by:
    • National Natural Science Foundation of China (No.61672031, No.61402523, No.61572516)

摘要: 差分密码分析是针对分组密码的强有力的攻击方法,估计分组密码抵抗差分密码分析的能力是分组密码安全性评估的重要内容之一.基于实际应用背景,提出了"四分组类CLEFIA变换簇"的概念,并利用变换簇中两种特殊分组密码结构的差分对应之间的关系,给出了变换簇中所有密码结构抵抗差分密码分析的安全性评估结果.

关键词: 分组密码, 四分组类CLEFIA变换簇, 差分密码分析, 活动轮函数

Abstract: Differential cryptanalysis is a powerful attack on block ciphers and to evaluate the security against differential cryptanalysis is an important part for the security evaluation of block ciphers.Based on practical application background,the concept of four-block CLEFIA-like transform cluster is put forward.Using the relation between differential correspondences of two special block cipher structures,security evaluation against differential cryptanalysis for all block cipher structures of the cluster is given.

Key words: block ciphers, four-block CLEFIA-like transform cluster, differential cryptanalysis, active round function

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