An Arbitrated Quantum Signature Scheme without Entanglement

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2017,（9）
• 页码范围: 317-322
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/0253-6102/68/3/317

摘要

Several quantum signature schemes are recently proposed to realize secure signatures of quantum or classical messages.Arbitrated quantum signature as one nontrivial scheme has attracted great interests because of its usefulness and efficiency.Unfortunately,previous schemes cannot against Trojan horse attack and DoS attack and lack of the unforgeability and the non-repudiation.In this paper,we propose an improved arbitrated quantum signature to address these secure issues with the honesty arbitrator.Our scheme takes use of qubit states not entanglements.More importantly,the qubit scheme can achieve the unforgeability and the non-repudiation.Our scheme is also secure for other known quantum attacks.