Cryptanalysis and improvement of the controlled secure direct communication

doi:10.1088/1674-1056/22/6/060308

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.

Keywords: quantum cryptography quantum communication

Received: 13 November 2012
Revised: 10 January 2013
Accepted manuscript online:

PACS:	03.67.Dd	(Quantum cryptography and communication security)
	03.67.Hk	(Quantum communication)

Fund: This research is partially supported by the National Science Council, Taiwan, (Grant No. NSC 100-2221-E-006-152-MY3).

Corresponding Authors: Hwang Tzonelih
E-mail: hwangtl@ismail.csie.ncku.edu.tw

Cite this article:

Kao Shih-Hung, Hwang Tzonelih Cryptanalysis and improvement of the controlled secure direct communication 2013 Chin. Phys. B 22 060308

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Cryptanalysis and improvement of the controlled secure direct communication

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