[Resource Topic] 2010/071: 2-round Substitution-Permutation and 3-round Feistel Networks have bad Algebraic Degree

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Title:
2-round Substitution-Permutation and 3-round Feistel Networks have bad Algebraic Degree

Authors: Didier Alquié

Abstract:

We study algebraic degree profile of reduced-round block cipher schemes. We show that the degree is not maximal with elementary combinatorial and algebraic arguments. We discuss on how it can be turned into distinguishers from balanced random functions.

ePrint: https://eprint.iacr.org/2010/071

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