相关密钥Square攻击AES-192
Dianzi Keji Daxue Xuebao/Journal of the University of Electronic Science and Technology of China（2013）
Abstract
利用AES-192子密钥间的内在关系,完全确定了在特定相关密钥差分下的前8轮子密钥的所有确切的差分值,结合Asiacrypt’2010中的密钥桥技术可以确定部分初始密钥,从而发现AES-192的密钥编排方案存在一定缺陷.利用该缺陷,给出了一个相关密钥Square攻击7轮和8轮AES-192的新方法.新方法攻击8轮AES-192仅需244.5选择明文,244.5存储,以及2183.5的8轮AES-192加密.结合部分和技术进一步降低了攻击的计算复杂度.
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Key words
Advanced encryption standard (AES),Block cipher,Differential attack,Related-key attack,Square attack
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