Related-Cipher Attacks
Related-Cipher Attacks
复制标题
DOI：
10.1007/3-540-36159-6_38
复制
发表时间：
2002-12
期刊：
影响因子：
--
通讯作者：
Hongjun Wu
中科院分区：
文献类型：
--
作者：
Hongjun Wu
正式介绍了相关密码攻击的概念。本文将相关密码视为具有相同轮函数但不同轮数的分组密码。如果它们的密钥调度不依赖于总整数，那么如果使用相同的密钥，则可能会应用相关密码攻击。我们将此攻击应用于阻止密码square，并显示square易受此攻击。我们还证明了ACISP02上提出的新的AES密钥调度在这种攻击下比原来的AES密钥调度弱。然后我们将差分攻击分为三类：相关消息攻击（原始的差分密码分析），相关密钥攻击和相关密码攻击。在密码设计中应考虑到这些攻击。
We formally introduce the concept of related-cipher attack. In this paper, we consider the related ciphers as block ciphers with the same round function but with different round numbers. If their key schedules do not depend on the total round number, then related-cipher attack could be applied if the same key is used. We applied this attack to block cipherSquareand show thatSquareis vulnerable to this attack. We also show that a new AES key schedule proposed at ACISP02 is weaker than the original one under this attack. We then classify the differential attacks into three categories: related-message attack (the original differential cryptanalysis), related-key attack and related-cipher attack. These attacks should be taken into consideration in cipher design.