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Journal of the Physical Society of Japan

Quantum Secure Direct Communication Based on Chaos with Authentication

Dazu Huang, Zhigang Chen, Ying Guo, Moon Ho Lee

Published Nov 26, 2007• 12 citations
Publisher

Abstract

A quantum secure direct communication protocol based on chaos is proposed with authentication. It has an advantage over distributing the secret message directly and verifying the communicators' identities with the assistance of a trusted center. To ensure the security of the secret message and the process of verification, the initial order of the travel particles is disturbed according to a chaotic sequence generated secretly via the general Arnold map. Security analysis demonstrates that the present scheme is secure against several attack strategies, such as the man-in-the-middle attack and Trojan horse attack.

DOI
10.1143/jpsj.76.124001

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A quantum secure direct communication protocol based on chaos is proposed with authentication. It has an advantage over distributing the secret message directly and verifying the communicators' identities with the assistance of a trusted center. To ensure the security of the secret message and the process of verification, the initial order of the travel particles is disturbed according to a chaotic sequence generated secretly via the general Arnold map. Security analysis demonstrates that the present scheme is secure against several attack strategies, such as the man-in-the-middle attack and Trojan horse attack.
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These days, quantum secret communication algorithms different from quantum key distribution protocol have been proposed, which are called quantum secure direct communication protocols. These do not aim to have a key agreement between two communicators, but, to send a secret message directly using quantum devices. In this paper, we propose a new quantum secret direct communication protocol which has advantages over the current ones and also discuss its security analysis against the man-in-the-middle attack.
Quantum secure direct communication (QSDC) can transmit secret messages directly from one user to another without first establishing a shared secret key, which is different from quantum key distribution. In this paper, we propose a novel quantum secure direct communication protocol based on signal photons and Bell states. Before the execution of the proposed protocol, two participants Alice and Bob exchange their corresponding identity IDA and IDB through quantum key distribution and keep them secret, respectively. Then the message sender, Alice, encodes each secret message bit into two single photons (| 01〉or|10〉) or a Bell state , and composes an ordered secret message sequence. To insure the security of communication, Alice also prepares the decoy photons and inserts them into secret message sequence on the basis of the values of IDA and IDB. By the secret identity IDA and IDB, both sides of the communication can check eavesdropping and identify each other. The proposed protocol not only completes secure direct communication, but also realizes the mutual authentication. The security analysis of the proposed protocol is presented in the paper. The analysis results show that this protocol is secure against some common attacks, and no secret message leaks even if the messages are broken. Compared with the two-way QSDC protocols, the presented protocol is a one-way quantum communication protocol which has the immunity to Trojan horse attack. Furthermore, our proposed protocol can be realized without quantum memory.
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.