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首页> 外文会议>International Conference on the Theory and Application of Cryptographic Techniques >A Theoretical Treatment of Related-Key Attacks: RKA-PRPs, RKA-PRFs, and Applications
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A Theoretical Treatment of Related-Key Attacks: RKA-PRPs, RKA-PRFs, and Applications

机译：相关关键攻击的理论治疗：RKA-PRP，RKA-PRF和应用

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摘要

We initiate a theoretical investigation of the popular block-cipher design-goal of security against "related-key attacks" (RKAs). We begin by introducing definitions for the concepts of PRPs and PRPs secure against classes of RKAs, each such class being specified by an associated set of "related-key deriving (RKD) functions." Then for some such classes of attacks, we prove impossibility results, showing that no block-cipher can resist these attacks while, for other, related classes of attacks that include popular targets in the block cipher community, we prove possibility results that provide theoretical support for the view that security against them is achievable. Finally we prove security of various block-cipher based constructs that use related keys, including a tweakable block cipher given in [14].
机译：我们启动了对“相关关键攻击”（RKAS）的受欢迎块 - 密码设计目标的理论调查。我们首先引入了对RKA类的PRPS和PRPS概念的定义，每个类别由关联的“相关关键导出（RKD）函数”指定。“然后，对于一些这样的攻击类，我们证明了不可能的结果，显示没有块密码可以抵抗这些攻击，而对于其他相关的攻击类，其中包括在块密码社区中的流行目标，我们证明了提供理论支持的可能性结果为了实现对他们的安全性是可以实现的。最后，我们证明了使用相关密钥的各种块密码的构造的安全性，包括[14]中给出的可调块密码。

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