Quantum Designated Verifier Signature Scheme with Semi-Trusted Third-Party

Article Quantum Science & Technology

Quantum public-key designated verifier signature

Xiangjun Xin et al.

Summary: The article proposes a quantum public-key designated verifier signature scheme based on single-qubit rotations. The scheme is highly secure and does not require the involvement of any third party.

QUANTUM INFORMATION PROCESSING (2022)

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Article Quantum Science & Technology

Provably secure arbitrated-quantum signature

Xiangjun Xin et al.

Summary: The researchers propose a provable secure arbitrator quantum signature (AQS) scheme based on the non-orthogonal entangled-triple sequence. Theoretical security proof, non-cloning theorem, and non-repudiation analysis are presented to ensure the security of the AQS. Compared to similar schemes, this proposal has better merits in security and efficiency.

QUANTUM INFORMATION PROCESSING (2022)

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Article Physics, Multidisciplinary

Quantum Digital Signature with Continuous-Variable

Xu Deng et al.

Summary: This paper presents a new CV-QDS protocol that is compatible with optical telecommunication technology and photon detector. The proposed protocol utilizes a pilot-aided feedforward data recovery scheme to solve security problems caused by the local oscillator setup in current protocols.

INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS (2022)

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Article Quantum Science & Technology

Security analysis and improvement of a quantum multi-signature protocol

Qianqian He et al.

Summary: An improved quantum multi-signature protocol was proposed to address the security flaws of the previous protocol, allowing all signers to share private keys and ensuring quantum efficiency. The revised protocol overcomes forgery and disavowal attacks, making the arbitrator semi-trusted in the system.

QUANTUM INFORMATION PROCESSING (2021)

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Article Quantum Science & Technology

An efficient semi-quantum secret sharing protocol of specific bits

Yuan Tian et al.

Summary: An efficient semi-quantum secret sharing protocol based on Bell states is proposed in this study, which is more flexible and practical compared to existing protocols, and the qubit efficiency is increased significantly.

QUANTUM INFORMATION PROCESSING (2021)

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Article Quantum Science & Technology

A practical quantum designated verifier signature scheme for E-voting applications

Mengce Zheng et al.

Summary: This paper introduces a practical QDVS scheme without entanglement for E-voting applications, simplifying complex quantum operations and protecting communication against potential eavesdroppers. The proposed scheme is easily deployable over existing QKD networks and meets main security requirements while being resistant to common attacks.

QUANTUM INFORMATION PROCESSING (2021)

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Article Quantum Science & Technology