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Erschienen in:
2012 | OriginalPaper | Buchkapitel
Differential Propagation Analysis of Keccak
verfasst von : Joan Daemen, Gilles Van Assche
Erschienen in: Fast Software Encryption
Verlag: Springer Berlin Heidelberg
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In this paper we introduce new concepts that help read and understand low-weight differential trails in
Keccak
. We then propose efficient techniques to exhaustively generate all 3-round trails in its largest permutation below a given weight. This allows us to prove that any 6-round differential trail in
Keccak
-
f
[1600] has weight at least 74. In the worst-case diffusion scenario where the mixing layer acts as the identity, we refine the lower bound to 82 by systematically constructing trails using a specific representation of states.