The Keccak sponge function family

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

2Radboud University




Software and other files


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.


NIST SP 800-185 officially released

23 December 2016

NIST released the SP 800-185 standard with useful new functions based on Keccak: cSHAKE, KMAC, TupleHash and ParallelHash.

Yesterday, NIST published the SP 800-185 standard [PDF]. It contains the following new functions based on Keccak:

These new functions all support the 128-bit and 256-bit security strengths. They all consistently support domain separation through the user-chosen customization string input. And they all support variable ouput length in a natural way.