1999 | OriginalPaper | Buchkapitel
Probabilistic Higher Order Differential Attack and Higher Order Bent Functions
verfasst von : Tetsu Iwata, Kaoru Kurosawa
Erschienen in: Advances in Cryptology - ASIACRYPT’99
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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We first show that a Feistel type block cipher is broken if the round function is approximated by a low degree vectorial Boolean function. The proposed attack is a generalization of the higher order differential attack to a probabilistic one. We next introduce a notion of higher order bent functions in order to prevent our attack. We then show their explicit constructions.