中国物理B ›› 2013, Vol. 22 ›› Issue (6): 60308-060308.doi: 10.1088/1674-1056/22/6/060308

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Cryptanalysis and improvement of the controlled secure direct communication

Kao Shih-Hung, Hwang Tzonelih   

  1. National Cheng Kung University, Institute of Computer Science and Information Engineering, Tainan City 701, Taiwan, China
  • 收稿日期:2012-11-13 修回日期:2013-01-10 出版日期:2013-05-01 发布日期:2013-05-01
  • 基金资助:
    This research is partially supported by the National Science Council, Taiwan, (Grant No. NSC 100-2221-E-006-152-MY3).

Cryptanalysis and improvement of the controlled secure direct communication

Kao Shih-Hung, Hwang Tzonelih   

  1. National Cheng Kung University, Institute of Computer Science and Information Engineering, Tainan City 701, Taiwan, China
  • Received:2012-11-13 Revised:2013-01-10 Online:2013-05-01 Published:2013-05-01
  • Contact: Hwang Tzonelih E-mail:hwangtl@ismail.csie.ncku.edu.tw
  • Supported by:
    This research is partially supported by the National Science Council, Taiwan, (Grant No. NSC 100-2221-E-006-152-MY3).

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摘要： This paper points out that, due to a flaw in the sender's encoding, the receiver in Gao et al.'s controlled quantum secret direct communication (CQSDC) protocol [Chin. Phys. 14 (2005), No. 5, p. 893] can reveal the whole secret message without the permission from the controller. An improvement is proposed to avoid this flaw.

关键词: quantum cryptography, quantum communication

Abstract: This paper points out that, due to a flaw in the sender's encoding, the receiver in Gao et al.'s controlled quantum secret direct communication (CQSDC) protocol [Chin. Phys. 14 (2005), No. 5, p. 893] can reveal the whole secret message without the permission from the controller. An improvement is proposed to avoid this flaw.

Key words: quantum cryptography, quantum communication

中图分类号:  (Quantum cryptography and communication security)

  • 03.67.Dd
03.67.Hk (Quantum communication)