The SHA-3 Zoo

The SHA-3 Zoo (work in progress) is a collection of cryptographic hash functions (in alphabetical order) submitted to the SHA-3 contest (see also here). It aims to provide an overview of design and cryptanalysis of all submissions. A list of all SHA-3 submitters is also available. For a software performance related overview, see eBASH. At a separate page, we also collect hardware implementation results of the candidates. Another categorization of the SHA-3 submissions can be found here.

The idea of the SHA-3 Zoo is to give a good overview of cryptanalytic results. We try to avoid additional judgement whether a submission is broken. The answer to this question is left to NIST. However, we categorize the cryptanalytic results by their impact from very theoretic to practical attacks. A detailed description is given in Cryptanalysis Categories.

At this time, 56 out of 64 submissions to the SHA-3 competition are publicly known and available. 51 submissions have advanced to Round 1 and 14 submissions have made it into Round 2.

The following table should give a first impression on the remaining SHA-3 candidates. It shows only the best known attack, more detailed results are collected at the individual hash function pages. A description of the main table is given here.

Recent updates of the SHA-3 Zoo

New: current status of Round 2 tweaks

Hash Name	Principal Submitter	Best Attack on Main NIST Requirements	Best Attack on other Hash Requirements
BLAKE	Jean-Philippe Aumasson
Blue Midnight Wish	Svein Johan Knapskog
CubeHash	Daniel J. Bernstein	preimage
ECHO	Henri Gilbert
Fugue	Charanjit S. Jutla
Grøstl	Lars R. Knudsen
Hamsi	Özgül Küçük
JH	Hongjun Wu	preimage
Keccak	The Keccak Team
Luffa	Dai Watanabe
Shabal	Jean-François Misarsky
SHAvite-3	Orr Dunkelman
SIMD	Gaëtan Leurent
Skein	Bruce Schneier

The following hash functions have advanced to Round 1 but not to Round 2:

Hash Name	Principal Submitter	Best Attack on Main NIST Requirements	Best Attack on other Hash Requirements
ARIRANG	Jongin Lim
AURORA	Masahiro Fujita	2nd preimage
Blender	Colin Bradbury	collision, preimage	near-collision
Cheetah	Dmitry Khovratovich		length-extension
CHI	Phillip Hawkes
CRUNCH	Jacques Patarin		length-extension
Dynamic SHA	Xu Zijie	collision	length-extension
Dynamic SHA2	Xu Zijie	collision	length-extension
ECOH	Daniel R. L. Brown	2nd preimage
Edon-R	Danilo Gligoroski	preimage
EnRUPT	Sean O'Neil	collision
ESSENCE	Jason Worth Martin	collision
FSB	Matthieu Finiasz
LANE	Sebastiaan Indesteege
Lesamnta	Hirotaka Yoshida
LUX	Ivica Nikolić	collision, 2nd preimage	DRBG,HMAC
MCSSHA-3	Mikhail Maslennikov	2nd preimage
MD6	Ronald L. Rivest
NaSHA	Smile Markovski	collision
SANDstorm	Rich Schroeppel
Sarmal	Kerem Varıcı	preimage
Sgàil	Peter Maxwell	collision
Spectral Hash	Çetin Kaya Koç	collision
SWIFFTX	Daniele Micciancio
TIB3	Daniel Penazzi	collision
Twister	Michael Gorski	preimage
Vortex	Michael Kounavis	preimage

The following hash functions have been submitted to the NIST competition but did not advance to Round 1, have been conceded broken or withdrawn by the designers:

Hash Name	Principal Submitter	Status	Best Attack on Main NIST Requirements
Abacus	Neil Sholer	conceded broken	2nd-preimage
Boole	Greg Rose	conceded broken	collision
DCH	David A. Wilson	conceded broken	collision
HASH 2X	Jason Lee	not in round 1	2nd-preimage
Khichidi-1	M. Vidyasagar	conceded broken	collision
Maraca	Robert J. Jenkins	not in round 1	preimage
MeshHash	Björn Fay	conceded broken	2nd preimage
NKS2D	Geoffrey Park	not in round 1	collision
Ponic	Peter Schmidt-Nielsen	not in round 1	2nd-preimage
SHAMATA	Orhun Kara	conceded broken	collision
StreamHash	Michal Trojnara	conceded broken	collision
Tangle	Rafael Alvarez	conceded broken	collision
WaMM	John Washburn	conceded broken	collision
Waterfall	Bob Hattersley	conceded broken	collision
ZK-Crypt	Carmi Gressel	not in round 1

Your analysis is not mentioned? Drop a line at sha3zoo@iaik.tugraz.at to let us know!