We are happy to announce that from today the Keccak Crunchy Crypto Collision and Pre-image Contest re-opens without limit of time.
There are two minor changes.
- We have simplified the rules for the prizes. For all open challenges the first submission now simply receives 10 € multiplied by the number of rounds nr. The challenges that have been closed remain closed.
- We allow for some more flexibility in choosing the reduced-round versions of Keccak-f. Previously, the nr-round reduced-round version was fixed to the first nr consecutive rounds. The submitters can now choose to take the last nr consecutive rounds (as in the draft of FIPS 202) or any other nr rounds, as long as they are consecutive.
We refer to Keccak Crunchy Crypto Collision and Pre-image Contest for more details.