基于混沌的双模块Feistel结构高安全性高速分组密码算法安全性分析

杜小妮; 段娥娥; 王天心

doi:10.11999/JEIT200057

基于混沌的双模块Feistel结构高安全性高速分组密码算法安全性分析

doi: 10.11999/JEIT200057

西北师范大学数学与统计学院兰州 730070

基金项目: 国家自然科学基金(61772022)

详细信息

作者简介:
杜小妮：女，1972年生，教授，博士生导师，研究方向为密码学与信息安全

段娥娥：女，1996年生，硕士生，研究方向为密码学与信息安全

王天心：女，1997年生，硕士生，研究方向为密码学与信息安全

通讯作者:
段娥娥　eeduan@126.com

中图分类号: TN918.4
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- 被引次数: 0
出版历程
- 收稿日期: 2020-01-14
- 修回日期: 2020-11-23
- 网络出版日期: 2020-12-03
- 刊出日期: 2021-05-18

Security Analysis of Block Cipher CFE

College of Mathematics and Statistics, Northwest Normal University, Lanzhou 730070, China

Funds: The National Natural Science Foundation of China (61772022)

摘要

摘要: 该文对基于混沌的双模块Feistel结构(CFE)高安全性高速分组算法的安全性进行了分析。分析结果表明，算法不适合用积分攻击、中间相遇攻击、不变量攻击、插值攻击和循环移位攻击分析其安全性；可以抵抗相关密钥攻击；更进一步地构造出了5轮不可能差分特征链，并利用其进行区分攻击；求得算法的活性S盒下界为6，概率约为2^–21；算法存在5轮零相关线性特征。
- 混沌密码 /
- 差分活性S盒 /
- 不可能差分攻击 /
- 区分攻击 /
- 零相关线性攻击
Abstract: The security of high security and high speed block cipher algorithm of two-module FEistel structure based on Chaos (CFE) is analyzed. The results show that the cipher is not suitable to use integral attack, meat-in-the-middle attack, invariant attack, interpolation attack and circle shift attack to analyze its security. And it can resist the related-key attack. Furthermore, 5 rounds of impossible differential characteristic are constructed and used to distinguish attacks. The lower bound of the active S-box is 6, and the probability is about 2^–21. There are 5 rounds of linear characteristic with zero-correlation.
- Chaos cipher /
- Differential active S-box /
- Impossible differential attack /
- Distinguish attack /
- Zero-correlation linear attack

HTML全文

图 1 结构图

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图 2 轮函数

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图 3 5轮不可能差分特征图

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图 4 5轮零相关线性区分器

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图 5 积分攻击

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图 6 5轮中间相遇区分器

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表 1 差分活性S盒个数下界

轮数 1 2 3 4 5

128/256 bit 0 2 3 5 6

下载: 导出CSV

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