通信学报 ›› 2015, Vol. 36 ›› Issue (3): 89-94.doi: 10.11959/j.issn.1000-436x.2015062

• 学术通信 • 上一篇    下一篇

对ARIA算法中间相遇攻击的改进

李曼曼1,2,陈少真1,2   

  1. 1 解放军信息工程大学 网络空间安全学院,河南 郑州 450001
    2 数学工程与先进计算国家重点实验室,河南 郑州 450001
  • 出版日期:2015-03-25 发布日期:2017-06-21
  • 基金资助:
    信息保障技术重点实验室开放基金资助项目

Improved meet-in-the-middle attack on ARIA cipher

Man-man LI1,2,Shao-zhen CHEN1,2   

  1. 1 Institute of Cyberspace Security, The PLA Information Engineering University,Zhengzhou 450001,China
    2 State Key Laboratory of Mathematical Engineering and Advanced Computing,Zhengzhou 450001,China
  • Online:2015-03-25 Published:2017-06-21

摘要:

对ARIA算法的结构特征进行了研究,利用“多重集”并结合截断差分的性质,将预计算的参数由30个减少到16个,构造新的4轮中间相遇区分器,有效地改进了ARIA-192算法的7轮中间相遇攻击。新攻击的预计算复杂度为2135.3,时间复杂度约为2123

关键词: 分组密码, ARIA算法, 中间相遇攻击, 时间复杂度

Abstract:

A study on the structure of ARIA cipher is presented. A new 4-round distinguishing property for the meet-in-the-middle attack on ARIA cipher is presented by making use of the multiset and the truncated differential char-acteristic. The new distinguishing property improves the meet-in-the-middle attack on 7 rounds of ARIA-192 cipher ef-fectively by reducing the 30 parameters to 16. The new attack requires a precomputation complexity of 2135.3and a time complexity of about 2123.

Key words: block cipher, ARIA cipher, meet-in-the-middle attack, time complexity

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