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We formalize the Type 1.x Generalized Feistel Structure (GFS) in order to fill the gap between Type 1 and Type 2 GFSs. This is a natural extension of Type 1 and Type 2 GFSs, and covers them as… (More)
The Generalized Feistel Structure (GFS) generally uses the sub-block-wise cyclic shift in the permutation layer, the layer between the two F function layers. For Type 2 GFS, at FSE 2010, Suzaki and… (More)
HyRAL is a blockcipher whose block size is 128 bits, and it supports the key lengths of 128, 129, …,256 bits. The cipher was proposed for the CRYPTREC project, and previous analyses did not identify… (More)