Impossible differential cryptanalysis of zodiac

Deukjo Hong, Jaechul Sung, Shiho Moriai, Sangjin Lee, Jong In Lim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

We discuss the impossible differential cryptanalysis of the blockcipher Zodiac [7]. The main design principles of Zodiac are simplicity and efficiency. However the diffusion layer in its round function is too simple to offer enough security. An impossible differential cryptanalysis is a proper method to attackthe weakness of Zodiac. Our attack using two 14-round impossible characteristics derives 128-bit master key of the full 16-round Zodiac with its complexity 2119 encryption times faster than the exhaustive search. The efficiency of the attackcompared with exhaustive search increases as the key size increases.

Original languageEnglish
Title of host publicationLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
PublisherSpringer Verlag
Pages300-311
Number of pages12
Volume2355
ISBN (Print)3540438696, 9783540438694
DOIs
Publication statusPublished - 2002
Event8th International Workshop on Fast Software Encryption, FSE 2001 - Yokohama, Japan
Duration: 2001 Apr 22001 Apr 4

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume2355
ISSN (Print)03029743
ISSN (Electronic)16113349

Other

Other8th International Workshop on Fast Software Encryption, FSE 2001
CountryJapan
CityYokohama
Period01/4/201/4/4

    Fingerprint

ASJC Scopus subject areas

  • Computer Science(all)
  • Theoretical Computer Science

Cite this

Hong, D., Sung, J., Moriai, S., Lee, S., & Lim, J. I. (2002). Impossible differential cryptanalysis of zodiac. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 2355, pp. 300-311). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 2355). Springer Verlag. https://doi.org/10.1007/3-540-45473-X_25