Related-Key Differential Attack on Block Cipher CIKS-128

doi:10.3969/j.issn.0372-2112.2016.09.010

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Related-Key Differential Attack on Block Cipher CIKS-128

更新时间：2025-07-08

- Related-Key Differential Attack on Block Cipher CIKS-128
- Acta Electronica Sinica Vol. 44, Issue 8, Pages: 1837-1844(2016)
- 作者机构：
  
  1. 解放军信息工程大学,河南,郑州,450004
  2. 信息保障技术重点实验室,北京,100000
  3. ,陕西,西安,710086
  4. 7817部队,四川,成都,611843
- 作者简介：
- 基金信息：
  
  Post-doctoral Science Foundation (No.2014M562582)
- DOI：10.3969/j.issn.0372-2112.2016.09.010
  CLC： TN918.1
- Published Online：25 August 2016，
  
  Published：2016
- 稿件说明：
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Related-Key Differential Attack on Block Cipher CIKS-128[J]. Acta Electronica Sinica, 2016, 44(8): 1837-1844.
DOI：

Related-Key Differential Attack on Block Cipher CIKS-128[J]. Acta Electronica Sinica, 2016, 44(8): 1837-1844. DOI： 10.3969/j.issn.0372-2112.2016.09.010.

摘要

分析研究了CIKS-128分组密码算法在相关密钥-差分攻击下的安全性.利用DDP结构和非线性函数的差分信息泄漏规律构造了一条高概率相关密钥-差分特征，并给出攻击算法，恢复出了192bit密钥；在此基础上，对剩余64bit密钥进行穷举攻击，恢复出了算法的全部256bit密钥.攻击所需的计算复杂度为2

次CIKS-128算法加密，数据复杂度为2

个相关密钥-选择明文，存储复杂度为2

25.4

字节存储空间.分析结果表明，CIKS-128算法在相关密钥-差分攻击条件下是不安全的.

Abstract

The security of CIKS-128 block cipher under related-key differential attack was studied.A related-key differential of high probability was constructed with the differential information leakages in the structure of DDPs and nonlinear functions.By proposing a corresponding key recovery attack based on the related-key differential

the master key of 192 bits was recovered.The rest 64 bits of the master key could be obtained by exhaustive search.The computational complexity

the data complexity and the memory complexity are 2

CIKS-128 block cipher encryptions

chosen-plaintexts and 2

25.4

bytes of storage resources

respectively.Analysis results show that CIKS-128 is unsafe under related-key differential attack.

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