• DocumentCode
    2880187
  • Title

    Improved Impossible Differential Cryptanalysis of SMS4

  • Author

    Tao Shi ; Wei Wang ; Qiuliang Xu

  • Author_Institution
    Sch. of Comput. Sci. & Technol., Shandong Univ., Jinan, China
  • fYear
    2012
  • fDate
    17-18 Nov. 2012
  • Firstpage
    492
  • Lastpage
    496
  • Abstract
    The SMS4 is the first commercial block cipher published by Chinese government. It´s a 32-round block cipher encrypted by 128-bit keys. By analyzing the changes of the difference between input and output pairs in each round, this paper presents a new impossible differential path of the 14-round SMS4. Using this path, a new method is submitted to crypt analyze an 18-round SMS4. The time complexity of the attack is 2117:06 partial encryptions.
  • Keywords
    computational complexity; cryptography; SMS4; block cipher encryption; differential cryptanalysis; partial encryption; time complexity; Educational institutions; Wireless LAN; SMS4; block cipher; impossible differential attack;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Computational Intelligence and Security (CIS), 2012 Eighth International Conference on
  • Conference_Location
    Guangzhou
  • Print_ISBN
    978-1-4673-4725-9
  • Type

    conf

  • DOI
    10.1109/CIS.2012.116
  • Filename
    6406067
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2880187