The Keccak sponge function family

Guido Bertoni1, Joan Daemen1,2, Michaël Peeters1 and Gilles Van Assche1

1STMicroelectronics
2Radboud University

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The figures above are available under the Creative Commons Attribution license. In short, they can be freely used, provided that attribution is properly done in the figure caption, either by linking to this webpage or by citing the article where the particular figure first appeared.

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Second cryptanalysis prize

14 May 2009

We announce the second prize for the most interesting cryptanalysis of Keccak. The results must be publicly available on an URL that is sent to keccak -at- noekeon -dot- org before June 30, 2009 at 23:59 GMT+2. We reserve the right to extend this deadline in the absence of interesting results.

This time, the prize is a Bialetti coffee machine of fine Italian design, plus a set of some of the best Italian coffee.

Like for the previous prize, who wins will be decided by consensus in the Keccak team, based internally on a system of points. Some hints:

We hope analyzing Keccak is a fun and interesting challenge, and we appreciate any submitted work!