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Erschienen in:
2011 | OriginalPaper | Buchkapitel
Practical Analysis of Reduced-Round Keccak
verfasst von : María Naya-Plasencia, Andrea Röck, Willi Meier
Erschienen in: Progress in Cryptology – INDOCRYPT 2011
Verlag: Springer Berlin Heidelberg
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Keccak
is a finalist of the SHA-3 competition. In this paper we propose a practical distinguisher on 4 rounds of the hash function with the submission parameters. Recently, the designers of
Keccak
published several challenges on reduced versions of the hash function. With regard to this, we propose a preimage attack on 2 rounds, a collision attack on 2 rounds and a near collision on 3 rounds of
$\lfloor$
Keccak
$\rfloor_{224}$
and
$\lfloor$
Keccak
$\rfloor_{256}$
. These are the first practical cryptanalysis results on reduced rounds of the hash function scenario. All of our results have been implemented.