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Global Mobile Congress

Three-party quantum secure direct communication base on Partially Entangled States

Xiujuan Zhang, Shu-Cui Xie, Dong Wang

Published Oct 1, 2011• 0 citations
Publisher

Abstract

In this paper, we point out Partially Entangled States quantum dialogue, which enables both legitimate parties to exchange their 2 bit secret messages in a direct way. Two step security check guarantees the security of this protocol. Partially Entangled States used as information carrier are easy to prepare and store, there is no need to transmit quantum states with secret message in quantum channel and two users can simultaneously communicate with the third party. The protocol is secure against the intercept-resend attack and the entangle-measure attack.

DOI
10.1109/gmc.2011.6103928

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In this paper, we point out Partially Entangled States quantum dialogue, which enables both legitimate parties to exchange their 2 bit secret messages in a direct way. Two step security check guarantees the security of this protocol. Partially Entangled States used as information carrier are easy to prepare and store, there is no need to transmit quantum states with secret message in quantum channel and two users can simultaneously communicate with the third party. The protocol is secure against the intercept-resend attack and the entangle-measure attack.
In this paper, we point out Partially Entangled States quantum dialogue, which enables both legitimate parties to exchange their 2 bit secret messages in a direct way. Two step security check guarantees the security of this protocol. Partially Entangled States used as information carrier are easy to prepare and store, there is no need to transmit quantum states with secret message in quantum channel and two users can simultaneously communicate with the third party. The protocol is secure against the intercept-resend attack and the entangle-measure attack.
A new three-party quantum secure direct communication protocol with authentication is proposed. The advantage of the scheme is that through authentication one can confirm the sender's legitimate identity, partially entangled states used as information carrier are easy to prepare and store, there is no need to transmit quantum states with secret message in quantum channel and two users can simultaneously communicate with the third party. In ideal channel, the protocol is secure against incoherent attack.
This paper proposes a new three-party quantum secure direct communication protocol with authentication. The scheme uses three-particle partially entangled states and CNOT gate to encode and decode. Two users can simultaneously transmit secret message to the third party,and partially entangled states shared can be used repeatedly. In ideal channel,the protocol is secure against incoherent attack. The advantage of the scheme is that through authentication,one can confirm the client's legitimate identity,partially entangled states are easy to prepare and store in practice,and two users can simultaneously communicate with the third party.
Drawing on the idea of the quantum secure direct communication(QSDC),a novel quantum dialogue scheme based on Bell states is presented in this paper.The proposed scheme can realize authorized parties' secure exchange of their respective secret messages simultaneously only through one communication.In this scheme,a random bit string and checking particles are used to ensure the security;the scheme is secure against eavesdropper's commonly used attacks,such as intercept/resend attack,Trojan horse attack and entanglement attack.A serious problem called leakage or correlation is found in some quantum dialogue protocols,namely,any eavesdropper can elicit some information about the secret from the classical communication of the legal users.Fortunately,our protocol can discard the drawback leakage.In addition,our protocol possesses high efficiency 66.7% and is feasible.Finally,the protocol is applied to the scheme based on two-qutrit entangled states with a secure communication.
Cluster state quantum dialogue is proposed,which enables both legitimate parties to exchange their 4 bit secret messages in a direct way.Compared with the there-particle W states,the shemes have following advantages.After two-step security check,four-bit secret message can be transmitted to each other by transmitting of single particle with the aid of two-bit classical information.The scheme can discard the drawback of the intercept-resend attack,the entangle-measure attack,and the optimal incoherent attack.