GENERAL

Efficient Quantum Secure Direct Communication with Authentication

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2008 Chinese Physical Society and IOP Publishing Ltd
, , Citation Liu Wen-Jie et al 2008 Chinese Phys. Lett. 25 2354 DOI 10.1088/0256-307X/25/7/007

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wenjiel@163.com

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1 School of Computer Science and Engineering, Southeast University, Nanjing 210096

2 School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing 210044

Dates

  1. Received 12 December 2007
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0256-307X/25/7/2354

Abstract

Two protocols of quantum direct communication with authentication [Phys. Rev. A 73 (2006) 042305] were recently indicated to be insecure against the authenticator Trent attacks [Phys. Rev. A 75 (2007) 026301]. We present two efficient protocols by using four Pauli operations, which are secure against inner Trent attacks as well as outer Eve attacks. Finally we generalize them to multiparty quantum direction communication.

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