Related-key rectangle attack on 43-round SHACAL-2

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9 Scopus citations

Abstract

SHACAL-2 is a 256-bit block cipher with up to 512 bits of key length based on the hash function SHA-2. It was recommended as one of the NESSIE projection selections. As far as the number of the attacked rounds is concerned, the best cryptanalytic result obtained on SHACAL-2 so far is the analysis of a related-key rectangle attack on the 42-round SHACAL-2 [13]. In this paper we present a related-key rectangle attack on 43-round out of the 64-round of SHACAL-2, which requires 2240,38 chosen plaintexts and has time complexity of 2480.4 43round SHACAL-2 encryptions. In this paper we also identify and fix some flaws in previous attack on SHACAL-2.

Original languageEnglish
Title of host publicationInformation Security Practice and Experience - Third International Conference, ISPEC 2007, Proceedings
PublisherSpringer Verlag
Pages33-42
Number of pages10
ISBN (Print)3540721592, 9783540721598
DOIs
StatePublished - 2007
Externally publishedYes
Event3rd International Conference on Information Security Practice and Experience, ISPEC 2007 - Hong Kong, Hong Kong
Duration: 7 May 20079 May 2007

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4464 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference3rd International Conference on Information Security Practice and Experience, ISPEC 2007
Country/TerritoryHong Kong
CityHong Kong
Period7/05/079/05/07

Keywords

  • Block cipher
  • Differential characteristic
  • Related-key rectangle attack
  • SHACAL-2

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