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Improved Linear Differential Attacks on CubeHash
EPFL, Switzerland.
FHNW, Switzerland.
FHNW, Switzerland.
The Cooper Union, USA.
2010 (English)In: PROGRESS IN CRYPTOLOGY - AFRICACRYPT 2010 / [ed] Bernstein, DJ; Lange, T, Springer Berlin/Heidelberg, 2010, 407-418 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents improved collision attacks on round-reduced variants of the hash function CubeHash, one of the SHA-3 second round candidates. We apply two methods for finding linear differential trails that lead to lower estimated attack complexities when used within the framework introduced by Brier,.Khazaei, Meier and Peyrin at ASIA-CRYPT 2009. The first method yields trails that are relatively dense at the beginning and sparse towards the end. In combination with the condition function concept; such trails lead to much faster collision attacks. We demonstrate this by providing a. real collision for CubeHash-5/96. The second method randomizes the search for highly probable linear differential trails and leads to significantly better attacks for up to eight rounds.

Place, publisher, year, edition, pages
Springer Berlin/Heidelberg, 2010. 407-418 p.
Series
Lecture Notes in Computer Science, ISSN 0302-9743 ; 6055
Keyword [en]
hash function, differential attack, collision, linearization, SHA-3, CubeHash.
National Category
Computer Science
Identifiers
URN: urn:nbn:se:kth:diva-70184DOI: 10.1007/978-3-642-12678-9_24ISI: 000279247600024ISBN: 978-3-642-12677-2 (print)OAI: oai:DiVA.org:kth-70184DiVA: diva2:486033
Conference
3rd International Conference on Cryptology in Africa, AFRICACRYPT 2010; Stellenbosch; 3 May 2010 through 6 May 2010
Note
QC 20120203Available from: 2012-01-30 Created: 2012-01-30 Last updated: 2012-02-03Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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