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http://dx.doi.org/10.13089/JKIISC.2002.12.5.3

On the Security of Rijndael-like Structures against Differential and Linear Cryptanalysis  

박상우 (국가보안기술연구소)
성수학 (배재대학교 전산정보수학과)
지성택 (국가보안기술연구소)
윤이중 (국가보안기술연구소)
임종인 (고려대학교 정보보호대학원)
Abstract
Rijndael-like structure is the special case of SPN structure. The linear transformation of Rijndael-like structure consisits of linear transformations of two types, the one is byte permutation $\pi$ and the other is linear tranformation $\theta$= ($\theta_1, \theta_2, \theta_3, \theta_4$), where each of $\theta_i$ separately operates on each of the four rows of a state. The block cipher, Rijndael is an example of Rijndael-like structures. In this paper. we present a new method for upper bounding the maximum differential probability and the maximum linear hull probability for Rijndael-like structures.
Keywords
Block Ciphers; Rijndael; Differential cryptanalysis; Linear cryptanalysis;
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