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A Practical Semi-Quantum Signature Protocol with Improved Eavesdropping Detection

arXiv Quantum Archived Apr 20, 2026 ✓ Full text saved

arXiv:2604.15836v1 Announce Type: new Abstract: Semi-quantum signature (SQS) schemes aim to enable quantum signature functionality in scenarios where only a subset of participants possess full quantum capabilities, thereby improving practical deployability while preserving quantum security advantages. Within this framework, we present a practical SQS protocol based on Bell states. The protocol is designed so that only the signer requires full quantum capability, significantly alleviating the qua

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Quantum Physics [Submitted on 17 Apr 2026] A Practical Semi-Quantum Signature Protocol with Improved Eavesdropping Detection Zengyu Pang, Hua Xiang Semi-quantum signature (SQS) schemes aim to enable quantum signature functionality in scenarios where only a subset of participants possess full quantum capabilities, thereby improving practical deployability while preserving quantum security advantages. Within this framework, we present a practical SQS protocol based on Bell states. The protocol is designed so that only the signer requires full quantum capability, significantly alleviating the quantum burden on the remaining participants. To strengthen security in semi-quantum environments, we incorporate an improved eavesdropping-detection mechanism that more effectively detects tampering. Compared with many existing schemes, which do not explicitly consider tampering of already generated signatures in their unforgeability analyses, the proposed protocol is designed to remain secure in the presence of such tampering. Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2604.15836 [quant-ph] (or arXiv:2604.15836v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2604.15836 Focus to learn more Submission history From: Hua Xiang [view email] [v1] Fri, 17 Apr 2026 08:39:54 UTC (67 KB) Access Paper: HTML (experimental) view license Current browse context: quant-ph < prev | next > new | recent | 2026-04 References & Citations INSPIRE HEP NASA ADS Google Scholar Semantic Scholar Export BibTeX Citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Demos Related Papers About arXivLabs Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)

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