Twin Column Parity Mixers and Gaston - A New Mixing Layer and Permutation

ePrint Report: Twin Column Parity Mixers and Gaston - A New Mixing Layer and Permutation

Solane El Hirch, Joan Daemen, Raghvendra Rohit, Rusydi H. Makarim

We introduce a new type of mixing layer for the round function of cryptographic permutations, called circulant twin column parity mixer (CPM), that is a generalization of the mixing layers in KECCAK-f and XOODOO. While these mixing layers have a bitwise differential branch number of 4 and a computational cost of 2 (bitwise) additions per …

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