Arbitrated quantum signature (AQS) scheme based on quantum teleportation has better flexibility and practicability. In this paper, we propose an arbitrated quantum signature scheme with quantum teleportation by using two three-qubit GHZ states. It has been proved that a cluster state has a maximal persistence when compared with an entangled state, and it is also more robust against decoherence. To resist against Alice’s disavowals or Bob’s (outside attacker’s) repudiation, two secret quantum key strings are pre-shared and two random numbers are introduced. The security analysis results show that our AQS scheme can make sure about the impossibility of disavowals by the signer Alice and repudiations by the verifier Bob, and the impossibility of forgeries by any illegal attacker. In addition, the proposed scheme does not require the complex quantum measurement operation, only Bell state measurements, projective measurements and unitary operation are needed to recover the arbitrary two-qubit state, which is the message copy from the signer Alice to the verifier Bob, and that is an appealing advantage in the implementation of a practical quantum communication network.

中文翻译：

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利用两个三量子比特GHZ状态进行量子隐形传态的仲裁量子签名方案

基于量子隐形传态的仲裁量子签名（AQS）方案具有更好的灵活性和实用性。在本文中，我们提出了一种利用两个三量子比特GHZ状态进行量子隐形传态的仲裁量子签名方案。已经证明，与纠缠态相比，簇状态具有最大的持久性，并且对于去相干性也更鲁棒。为了抵制Alice的拒绝或Bob（外部攻击者）的拒绝，预先共享了两个秘密量子密钥串，并引入了两个随机数。安全分析结果表明，我们的AQS方案可以确保签名者Alice不可能拒绝和验证者Bob拒绝身份，以及任何非法攻击者都不能伪造。此外，