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International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP)

Efficient Many-to-One and One-to-Many Multiparty Quantum Secure Direct Dommunication with Authentication

Wenjie Liu, Hanwu Chen, Zhiqiang Li, Jun Zhao

Published Aug 1, 2008• 2 citations
Publisher

Abstract

In the multiparty communication, there are two types of Communication modes: the many-to-one mode and the one-to-many mode. In this paper, two efficient authenticated multiparty quantum secure direct communication protocols are presented by using GHZ states and dense coding, one is used for the many-to-one communication, and the other is suitable to the one-to-many communication. Analysis shows these protocols are secure against outer Evepsilas attacks and inner anticipators' attacks (including Trent's attacks), and show more efficiency on message transmission and the repeated use of secrete identity.

DOI
10.1109/iih-msp.2008.175

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In the multiparty communication, there are two types of Communication modes: the many-to-one mode and the one-to-many mode. In this paper, two efficient authenticated multiparty quantum secure direct communication protocols are presented by using GHZ states and dense coding, one is used for the many-to-one communication, and the other is suitable to the one-to-many communication. Analysis shows these protocols are secure against outer Evepsilas attacks and inner anticipators' attacks (including Trent's attacks), and show more efficiency on message transmission and the repeated use of secrete identity.
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A multiparty controlled bidirectional quantum secure direct communication and authentication protocol is proposed based on EPR pair and entanglement swapping. The legitimate identities of communicating parties are encoded to Bell states which act as a detection sequence. Secret messages are transmitted by using the classical XOR operation, which serves as a one-time-pad. No photon with secret information transmits in the quantum channel. Compared with the protocols proposed by Wang et al. [Acta Phys. Sin. 56 (2007) 673; Opt. Commun. 266 (2006) 732 ], the protocol in this study implements bidirectional communication and authentication, which defends most attacks including the 'man-in-the-middle' attack efficiently.
Two protocols for deterministic secure quantum communication (DSQC) using GHZ-like states have been proposed. It is shown that one of these protocols can be modified to an equivalent but more efficient protocol of quantum secure direct communication (QSDC). Security and efficiency of the proposed protocols are analyzed in detail and are critically compared with the existing protocols. It is shown that the proposed protocols are highly efficient. It is also shown that all the physical systems where dense coding is possible can be used to design maximally efficient protocol of DSQC and QSDC. Further, it is shown that dense coding is sufficient but not essential for DSQC and QSDC protocols of the present kind. We have shown that there exist a large class of quantum state which can be used to design maximally efficient DSQC and QSDC protocols of the present kind. It is further, observed that maximally efficient QSDC protocols are more efficient than their DSQC counterparts. This additional efficiency arises at the cost of message transmission rate.