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arXiv 1003.2337quant-ph
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无需纠缠态的仲裁量子签名方案

Arbitrated quantum signature schemes without using entangled states

Xiangfu Zou, Daowen Qiu

摘要:

数字签名是用于证明数字消息或文档的真实性的数学方案。为了实现量子信息的签名,人们提出了一些仲裁量子签名方案。然而,在现有的文献中,仲裁量子签名方案依赖于纠缠。本文提出了两个在签名和验证阶段不使用纠缠态的仲裁量子签名方案。第一个建议方案可以保留现有方案的优点。然后,我们指出,在这个方案和以前的方案中,存在一个问题,鲍勃可以否认签名的完整性。为了克服这个问题,我们构造了另一个仲裁量子签名方案,而不是使用量子纠缠态,而是使用一个公共板。新方案具有三个优点:不使用纠缠态,同时保留了现有方案的优点;签名的完整性可以避免被接收方否认;提高了传输效率,降低了实现的复杂度。此外,我们提出了一种技术,使量子消息可以保持秘密的仲裁的量子签名方案中的仲裁者。

英文摘要:

A digital signature is a mathematical scheme for demonstrating the authenticity of a digital message or document. For signing quantum messages, some arbitrated quantum signature schemes have being proposed. However, in the existing literature, arbitrated quantum signature schemes depend on entanglement. In this paper, we present two arbitrated quantum signature schemes without utilizing entangled states in the signing phase and the verifying phase. The first proposed scheme can preserve the merits in the existing schemes. Then, we point out, in this scheme and the prior schemes, there exists a problem that Bob can repudiate the integrality of the signatures. To conquer this problem, we construct another arbitrated quantum signature scheme without using quantum entangled states but using a public board. The new scheme has three advantages: it does not utilize entangled states while it can preserve all merits in the existing schemes; the integrality of the signature can avoid being disavowed by the receiver; and, it provides a higher efficiency in transmission and reduces the complexity of implementation. Furthermore, we present a technique such that the quantum message can keep secret to the arbitrator in a arbitrated quantum signature scheme.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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