A differential cryptanalysis of Yen-Chen-Wu multimedia cryptography system

  • Authors:
  • Chengqing Li;Shujun Li;Kwok-Tung Lo;Kyandoghere Kyamakya

  • Affiliations:
  • Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong, China;Fachbereich Informatik und Informationswissenschaft, Universität Konstanz, Fach M697, Universitätsstraíe 10, 78457 Konstanz, Germany;Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong, China;Universität Klagenfurt, Institut für Intelligente Systemtechnologien, Universitätsstraíe 65-67, 9020 Klagenfurt, Austria

  • Venue:
  • Journal of Systems and Software
  • Year:
  • 2010

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Abstract

Recently, Yen et al. presented a new chaos-based cryptosystem for multimedia transmission named ''multimedia cryptography system'' (MCS). No cryptanalytic results have been reported so far. This paper presents a differential attack to break MCS, which requires only seven chosen plaintexts. The complexity of the attack is O(N), where N is the size of plaintext. Experimental results are also given to show the real performance of the proposed attack.