Equivalence of Generalised Feistel Networks

• Published in: IACR Transactions on Symmetric Cryptology Vol. 2024; no. 1; pp. 412 - 440
• Main Authors: Derbez, Patrick, Euler, Marie
• Format: Journal Article
• Language: English
• Published: Ruhr Universität Bochum 01.03.2024; Ruhr-Universität Bochum
• Subjects: Computer Science; Cryptography and Security; GFN; LBlock; TWINE; WARP; WARP; LBlock; TWINE; GFN

This paper focuses on equivalences between Generalised Feistel Networks (GFN) of type-II. We introduce a new definition of equivalence which captures the concept that two GFNs are identical up to re-labelling of the inputs/outputs, and give a procedure to test this equivalence relation. Such two GFN...