Some group-theoretical results on Feistel Networks in a long-key scenario

12/14/2019

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by   Riccardo Aragona, et al.

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The study of the trapdoors that can be hidden in a block cipher is and has always been a high-interest topic in symmetric cryptography. In this paper we focus on Feistel-network-like ciphers in a classical long-key scenario and we investigate some conditions which make such a construction immune to the partition-based attack introduced recently by Bannier et al.