Towards Minimizing Non-linearity in Type-II Generalized Feistel Networks

ePrint Report: Towards Minimizing Non-linearity in Type-II Generalized Feistel Networks

Yuqing Zhao, Chun Guo, Weijia Wang

Recent works have revisited blockcipher structures to achieve MPC- and ZKP-friendly designs. In particular, Albrecht et al. (EUROCRYPT 2015) first pioneered using a novel structure SP networks with partial non-linear layers (P-SPNs) and then (ESORICS 2019) repopularized using multi-line generalized Feistel networks (GFNs). In this paper, we persist in exploring symmetric cryptographic constructions that are conducive to the applications such as MPC. In order …

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