This paper introduces a new framework and a generalization of the various flavors of related-key attacks. The new framework allows for combining all the previous related-key attacks into a complex, but much more powerful attack. The new attack is independent of the number of rounds of the cipher. This property holds even when the round functions of the cipher use different subkeys. The strength of our new method is demonstrated by an attack on 4r-round IDEA, for any r. This attack is the first attack on a widely deployed block cipher which is independent of the number of rounds. The variant of the attack with r = 2 is the first known attack on 8-round IDEA.
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机译：本文介绍了一个新的框架和相关关键攻击的各种口味的概括。新框架允许将所有以前的相关密钥攻击组合成复杂，但更强大的攻击。新攻击与密码的轮数无关。即使密码的圆形功能使用不同的子键，此属性也会保持。通过对4次思想的攻击来证明我们新方法的强度，适用于任何R.此攻击是对广泛部署的块密码的第一次攻击，它与轮数无关。 r = 2攻击的变体是关于8轮思想的第一个已知攻击。
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