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International Conference on Emerging Intelligent Data and Web Technologies

Controlled Quantum Teleportation with Identity Authentication

Xiaoqing Tan, Lianxia Jiang, Qiong Zhang

Published Sep 1, 2013• 5 citations
Publisher

Abstract

The aim of controlled quantum teleportation is to realize communication between Alice and Bob to cooperate with a trusted controller Charlie successfully. However, we show that the dishonest Bob can obtain the initial Alice's secret message with 50 percents without the permission of Charlie. We propose an improved controlled quantum teleportation scheme by using quantum entanglement swapping in quantum communication. The receiver Bob is identified by the trusted Charlie. After the sender Alice gets the feedback information from Charlie, he can make sure the identity of Bob and then sends the quantum information to Bob. The scheme can effectively prevent forged identity attack to ensure the security of quantum teleportation. We also propose a quantum teleportation scheme with identity authentication in controlled quantum network with multiple users and controllers.

DOI
10.1109/eidwt.2013.67

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The aim of controlled quantum teleportation is to realize communication between Alice and Bob to cooperate with a trusted controller Charlie successfully. However, we show that the dishonest Bob can obtain the initial Alice's secret message with 50 percents without the permission of Charlie. We propose an improved controlled quantum teleportation scheme by using quantum entanglement swapping in quantum communication. The receiver Bob is identified by the trusted Charlie. After the sender Alice gets the feedback information from Charlie, he can make sure the identity of Bob and then sends the quantum information to Bob. The scheme can effectively prevent forged identity attack to ensure the security of quantum teleportation. We also propose a quantum teleportation scheme with identity authentication in controlled quantum network with multiple users and controllers.
Controlled quantum teleportation (CQT) is to realise communication between a sender Alice and a receiver Bob to cooperate with a controller Charlie. It can send any quantum state α|0〉 + β|1〉 successfully by this quantum communication system. However, its drawback is that Alice can not confirm Charlie’s and Bob’s identities. In this paper, we design two identity authentication schemes IA_C and IA_B based on entanglement swapping to make identification confirmation for Charlie and Bob, and use decoy states to check outside eavesdropping. Alice confirms the identity of Charlie by using two Bell states entanglement swapping. Moreover, the identity confirmation of Bob by Alice with the help of Charlie is to use three Bell states entanglement swapping. The scheme can effectively prevent forgery identity attack to ensure the security of quantum teleportation. We also propose an improved controlled quantum teleportation (ICQT) scheme with decoy states to ensure the security of quantum channel.
We present a controlled quantum teleportation protocol. In the protocol, quantum information of an unknown state of a 2-level particle is faithfully transmitted from a sender Alice to a remote receiver Bob via an initially shared triplet of entangled particles under the control of the supervisor Charlie. The distributed entangled particles shared by Alice, Bob and Charlie function as a quantum information channel for faithful transmission. We also propose a controlled and secure direct communication scheme by means of this teleportation. After ensuring the security of the quantum channel, Alice encodes the secret message directly on a sequence of particle states and transmits them to Bob supervised by Charlie using this controlled quantum teleportation. Bob can read out the encoded message directly by the measurement on his qubit. In this scheme, the controlled quantum teleportation transmits Alice's message without revealing any information to a potential eavesdropper. Because there is not a transmission of the qubit carrying the secret message between Alice and Bob in the public channel, it is completely secure for controlled and direct secret communication if perfect quantum channel is used. The special feature of this scheme is that the communication between two sides depends on the agreement of a third side to co-operate.
Abstract In this paper, after quantum identity authentication is applied into controlled quantum secure direct communication (CQSDC), a CQSDC protocol with twice identity authentications is put forward based on the entanglement swapping of Bell states. In this protocol, firstly, the user Alice and the user Bob respectively utilize decoy single particles to accomplish the identity authentications with the semi-honest control center Charlie; then, Alice and Bob utilize the entanglement swapping of Bell states to finish the identity authentication between them; and finally, Alice utilizes the entanglement swapping of Bell states to transmit her secret message directly to Bob. This protocol is validated to be able to resist the internal attacks from Charlie and the outside attacks from Eve. The correctness of this protocol is proven by the quantum circuit simulations on IBM Qiskit quantum cloud platform.
Unconditional security in Quantum Key Distribution (QKD) relies on authenticating the identities of users involved in key distribution. While classical identity authentication schemes were initially utilized in QKD implementations, concerns regarding their vulnerability have prompted the exploration of Quantum Identity Authentication (QIA) protocols. In this study, we introduce a new protocol for QIA, derived from the concept of controlled secure direct quantum communication. Our proposed scheme facilitates simultaneous authentication between two users, Alice and Bob, leveraging Bell states with the assistance of a third party, Charlie. Through rigorous security analysis, we demonstrate that the proposed protocol withstands various known attacks, including impersonation, intercept and resend and impersonated fraudulent attacks. Additionally, we establish the relevance of the proposed protocol by comparing it with the existing protocols of similar type.
We propose a novel protocol for controlled bidirectional quantum secure communication based on a nonlocal swap gate scheme. Our proposed protocol would be applied to a system in which a controller (supervisor/Charlie) controls the bidirectional communication with quantum information or secret messages between legitimate users (Alice and Bob). In this system, the legitimate users must obtain permission from the controller in order to exchange their respective quantum information or secret messages simultaneously; the controller is unable to obtain any quantum information or secret messages from the decoding process. Moreover, the presence of the controller also avoids the problem of one legitimate user receiving the quantum information or secret message before the other, and then refusing to help the other user decode the quantum information or secret message. Our proposed protocol is aimed at protecting against external and participant attacks on such a system, and the cost of transmitting quantum bits using our protocol is less than that achieved in other studies. Based on the nonlocal swap gate scheme, the legitimate users exchange their quantum information or secret messages without transmission in a public channel, thus protecting against eavesdroppers stealing the secret messages.
In this paper, we present a scheme for teleporting multi-qudit quantum state, from the sender Alice to the receiver Charlie via many controllers Bobs, whose control parameters are obtained using entanglement swapping of maximally d-dimensional EPR pair. In our scheme, Yang's qutrit controlled teleportation protocol [Commun. Theor. Phys. 49 (2008) 338] based on Bell-state entanglement swapping is generalized to the qudit case. The scheme of multi-qudit owns the advantage of having higher code capacity and better security than that of multi-qutrit.