Related key differential cryptanalysis of full-round SPECTR-H64 and CIKS-1

Youngdai Ko, Changhoon Lee, Seokhie Hong, Sangjin Lee

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

In this paper we show an attack on full-round SPECTR H64 and CIKS-1 using related key differential characteristic, which are based on data-dependent rotation with simple key schedule. To find partial 35-bit subkeys of SPECTR-H64 it needs about 223 data and 216 encryptions with an expected success probability 95.8%. As for CIKS-1, 24 data and 233 encryptions are requried to find the final round key of it with an expected success probability 80%.

Original languageEnglish
Pages (from-to)137-148
Number of pages12
JournalLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume3108
Publication statusPublished - 2004

Keywords

  • CIKS-1
  • Data-dependent rotation
  • Related Key differential attack
  • SPECTR-H64

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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