Improved differential cryptanalysis of serpent

  • Gaoli Wang*
  • , Shaohui Wang
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Serpent is one of the five AES finalist. In 2001, Biham, Dunkelman and Keller present a differential cryptanalysis of Serpent up to 8 rounds with 256-key bits by using 214 6-round differential characteristics with probability 2-93. In this paper we present a new 6-round differential characteristic ΩA with the same probability 2-93. By changing the input differences of ΩA, we get a characteristic ΩB with probability 2-95. We give an improved differential attack on 8-round Serpent with 256-bit keys by using 219.62 6-round characteristics with probability 2-95. Similarly, we present an improved differential attack on 8-round Serpent with 256-bit keys by using 225.24 6-round characteristics with probability 2-97.

Original languageEnglish
Title of host publicationProceedings - 2010 International Conference on Computational Intelligence and Security, CIS 2010
Pages367-371
Number of pages5
DOIs
StatePublished - 2010
Externally publishedYes
Event2010 International Conference on Computational Intelligence and Security, CIS 2010 - Nanning, China
Duration: 11 Dec 201014 Dec 2010

Publication series

NameProceedings - 2010 International Conference on Computational Intelligence and Security, CIS 2010

Conference

Conference2010 International Conference on Computational Intelligence and Security, CIS 2010
Country/TerritoryChina
CityNanning
Period11/12/1014/12/10

Keywords

  • Block cipher
  • Differential cryptanalysis
  • Serpent

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