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A Simplified and Generalized Treatment of DES-Related Ciphers

A Simplified and Generalized Treatment of DES-Related Ciphers

Abstract This work is a study of DES-like ciphers where the bitwise exclusive-or (XOR) operation in the underlying Feistel network is replaced by an arbitrary group operation. The authors construct a two-round simplified version of DES that contains all the DES components and show that its set of encryption permutations …