Difference between revisions of "Fugue"
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| Type of Analysis || Hash Function Part || Hash Size (n) || Parameters/Variants || Compression Function Calls || Memory Requirements || Reference | | Type of Analysis || Hash Function Part || Hash Size (n) || Parameters/Variants || Compression Function Calls || Memory Requirements || Reference | ||
| + | |- | ||
| + | | distinguisher<sup>(1)</sup> || output transformation || 256 || || 1 || - || [http://ehash.iaik.tugraz.at/uploads/c/cd/Fugue_path.pdf Aumasson,Phan] | ||
|- | |- | ||
| internal collision || hash function || 256 || (2,5,13) || 2<sup>352</sup> || 2<sup>352</sup> || [http://cryptolux.org/mediawiki/uploads/9/99/Struct2.pdf Khovratovich] | | internal collision || hash function || 256 || (2,5,13) || 2<sup>352</sup> || 2<sup>352</sup> || [http://cryptolux.org/mediawiki/uploads/9/99/Struct2.pdf Khovratovich] | ||
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| + | <sup>(1)</sup>The Fugue team commented on these distinguishers in [http://ehash.iaik.tugraz.at/uploads/d/d7/Fugue_designers_reply_to_AumassonPhan_Distinguisher.txt this note] using [http://ehash.iaik.tugraz.at/uploads/c/c8/Fig7.pdf this figure]. | ||
| + | |||
| + | |||
| + | <bibtex> | ||
| + | @misc{nistAP10, | ||
| + | author = {Jean-Philippe Aumasson and Raphael C.-W. Phan}, | ||
| + | title = {Analysis of Fugue-256}, | ||
| + | howpublished = {Posting to NIST hash mailing list}, | ||
| + | year = {2010}, | ||
| + | url = {http://ehash.iaik.tugraz.at/uploads/c/cd/Fugue_path.pdf}, | ||
| + | abstract = {We would like to report our analysis results on the final round algorithm of | ||
| + | Fugue-256 (i.e., the function called "G"): | ||
| + | |||
| + | The attached pdf note shows an example differential characteristic of | ||
| + | probability 1, on 15 intermediate rounds of G, as well as an extended | ||
| + | characteristic that can be used as a distinguisher for the full | ||
| + | 18-round G. It also shows how differences propagate on an | ||
| + | augmented-round version of G (i.e. if more G2 rounds were added). | ||
| + | |||
| + | A detailed analysis as well as further observations will be reported | ||
| + | in a subsequent paper. | ||
| + | }, | ||
| + | } | ||
| + | </bibtex> | ||
| + | |||
Revision as of 13:10, 21 June 2010
1 The algorithm
- Author(s): Shai Halevi and William E. Hall and Charanjit S. Jutla
- Website: http://domino.research.ibm.com/comm/research_projects.nsf/pages/fugue.index.html
- NIST submission package:
- round 1/2: Fugue_Round2_Update.zip (old versions: Fugue.zip, FugueUpdate.zip, Fugue_Round2.zip)
Shai Halevi, William E. Hall, Charanjit S. Jutla - The Hash Function Fugue
- ,2009
- http://domino.research.ibm.com/comm/research_projects.nsf/pages/fugue.index.html/$FILE/fugue_09.pdf
BibtexAuthor : Shai Halevi, William E. Hall, Charanjit S. Jutla
Title : The Hash Function Fugue
In : -
Address :
Date : 2009
Shai Halevi, William E. Hall, Charanjit S. Jutla - The Hash Function Fugue
- ,2008
- http://domino.research.ibm.com/comm/research_projects.nsf/pages/fugue.index.html/$FILE/NIST-submission-Oct08-fugue.pdf
BibtexAuthor : Shai Halevi, William E. Hall, Charanjit S. Jutla
Title : The Hash Function Fugue
In : -
Address :
Date : 2008
2 Cryptanalysis
We distinguish between two cases: results on the complete hash function, and results on underlying building blocks.
A description of the tables is given here.
Recommended security parameters: (k,r,t) = (2,5,13) for (n=224,256); (k,r,t) = (3,5,13) for (n=384); (k,r,t) = (4,8,13) for (n=512)
2.1 Hash function
Here we list results on the hash function according to the NIST requirements. The only allowed modification is to change the security parameter.
| Type of Analysis | Hash Size (n) | Parameters | Compression Function Calls | Memory Requirements | Reference |
2.2 Building blocks
Here we list results on underlying building blocks, and the hash function modified by other means than the security parameter.
Note that these results assume more direct control or access over some internal variables (aka. free-start, pseudo, compression function, block cipher, or permutation attacks).
| Type of Analysis | Hash Function Part | Hash Size (n) | Parameters/Variants | Compression Function Calls | Memory Requirements | Reference |
| distinguisher(1) | output transformation | 256 | 1 | - | Aumasson,Phan | |
| internal collision | hash function | 256 | (2,5,13) | 2352 | 2352 | Khovratovich |
| internal collision | hash function | 512 | (4,8,13) | 2480 | 2480 | Khovratovich |
(1)The Fugue team commented on these distinguishers in this note using this figure.
Jean-Philippe Aumasson, Raphael C.-W. Phan - Analysis of Fugue-256
- ,2010
- http://ehash.iaik.tugraz.at/uploads/c/cd/Fugue_path.pdf
BibtexAuthor : Jean-Philippe Aumasson, Raphael C.-W. Phan
Title : Analysis of Fugue-256
In : -
Address :
Date : 2010
Dmitry Khovratovich - Cryptanalysis of hash functions with structures
