A Practical Semi-Quantum Signature Protocol with Improved Eavesdropping Detection

• URL: http://arxiv.org/abs/2604.15836v1
• Date: Fri, 17 Apr 2026 08:39:54 GMT
• Title: A Practical Semi-Quantum Signature Protocol with Improved Eavesdropping Detection
• Abstract summary: Scheme aims to enable quantum signature functionality in scenarios where only a subset of participants possess full quantum capabilities.<n>We present a practical SQS protocol based on Bell states.<n>We incorporate an improved eavesdropping-detection mechanism that more effectively detects tampering.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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 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.

Related papers

• Certifying coherence in quantum devices under classical control [33.72751145910978]
  We prove that coherence can be fully characterised through a hierarchy of semidefinite programs.<n>For the important special case of qubits, we exploit conceptual connections with the theory of joint measurability.<n>We apply these methods to determine whether quantum channels are able to preserve coherence or are inherently coherence-breaking.
  arXiv  Detail & Related papers  (2026-06-02T14:20:45Z)
• Verifier-initiated quantum message-authentication via quantum zero-knowledge proofs [38.81686642226027]
  We introduce a new method where the verifier can request authentication only when needed, improving efficiency for quantum networks and blockchain applications.<n>Our approach adapts the concept of zero-knowledge widely used in classical cryptography to quantum settings, ensuring that verification reveals nothing about secret keys.<n>This work delivers the first general verifier-initiated quantum signature scheme with formal security, paving the way for scalable, secure authentication in future quantum infrastructures and decentralized systems.
  arXiv  Detail & Related papers  (2025-12-05T04:40:34Z)
• A Three-Party Lightweight Quantum Key Distribution Protocol in a Restricted Quantum Environment [0.0]
  This study proposes a new lightweight quantum key distribution (LQKD) protocol based on the four-particle cluster state.<n>The protocol enables a quantum-capable user to simultaneously establish two separate secret keys with two "classical" users.
  arXiv  Detail & Related papers  (2025-07-15T10:45:00Z)
• A Fully Device-Independent Ternary Quantum Key Distribution Protocol Based on the Impossible Colouring Game [0.59374762912328]
  We propose a quantum key distribution protocol based on the two-party Impossible Colouring pseudo-telepathy game.<n>The protocol harnesses Bell inequality violations that arise from contextuality in the Kochen-Specker theorem.<n>It operates within an adequate security framework and demonstrates an improved key generation rate compared to standard quantum key distribution schemes.
  arXiv  Detail & Related papers  (2025-05-21T14:52:31Z)
• Faithful and secure distributed quantum sensing under general-coherent attacks [0.0]
  We introduce, theoretically analyze, and experimentally demonstrate single- and two-way protocols for distributed sensing.<n>We introduce a safety-threshold mechanism that allows the protocol to proceed in low-noise cases and quantifying the potential tampering with respect to the ideal estimation procedure.<n>We demonstrate our protocols in a photonic-based implementation, observing that the possibility of guaranteeing a safety threshold may come at a significant price in terms of the estimation bias.
  arXiv  Detail & Related papers  (2025-05-05T12:48:41Z)
• Quantum-Secured Device-Independent Global Positioning System [0.0]
  This paper introduces a device-independent quantum self-testing protocol designed specifically for multipartite quantum communication.<n>By exploiting the quantum rigidity in Bell nonlocality, the protocol enables the certification of genuinely entangled subspaces without reliance on device assumptions.
  arXiv  Detail & Related papers  (2025-04-11T11:54:33Z)
• Quantum Homogenization as a Quantum Steady State Protocol on NISQ Hardware [42.52549987351643]
  Quantum homogenization is a reservoir-based quantum state approximation protocol.<n>We extend the standard quantum homogenization protocol to the dynamically-equivalent ($mathttSWAP$)$alpha$ formulation.<n>We show that our proposed protocol yields a completely positive, trace preserving (CPTP) map under which the code subspace is correctable.
  arXiv  Detail & Related papers  (2024-12-19T05:50:54Z)
• Practical hybrid PQC-QKD protocols with enhanced security and performance [44.8840598334124]
  We develop hybrid protocols by which QKD and PQC inter-operate within a joint quantum-classical network. In particular, we consider different hybrid designs that may offer enhanced speed and/or security over the individual performance of either approach.
  arXiv  Detail & Related papers  (2024-11-02T00:02:01Z)
• Towards efficient and secure quantum-classical communication networks [47.27205216718476]
  There are two primary approaches to achieving quantum-resistant security: quantum key distribution (QKD) and post-quantum cryptography (PQC) We introduce the pros and cons of these protocols and explore how they can be combined to achieve a higher level of security and/or improved performance in key distribution. We hope our discussion inspires further research into the design of hybrid cryptographic protocols for quantum-classical communication networks.
  arXiv  Detail & Related papers  (2024-11-01T23:36:19Z)
• Quantum digital signature based on single-qubit without a trusted third-party [45.41082277680607]
  We propose a novel quantum digital signature protocol without a trusted third-party.<n>We prove that the protocol has information-theoretical unforgeability.
  arXiv  Detail & Related papers  (2024-10-17T09:49:29Z)
• Efficient Quantum Digital Signatures without Symmetrization Step [7.848038078036641]
  Quantum digital signatures (QDS) exploit quantum laws to guarantee non-repudiation, unforgeability and transferability of messages. Current QDS protocols face two major restrictions, including the requirement of the symmetrization step. We present an efficient QDS protocol to overcome these issues by utilizing the classical post-processing operation called post-matching method.
  arXiv  Detail & Related papers  (2021-04-08T01:54:50Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.