Article: Identity-based threshold blind signature scheme in standard model Journal: International Journal of Ad Hoc and Ubiquitous Computing (IJAHUC) 2026 Vol.52 No.1 pp.49 - 59 Abstract: The threshold blind signature scheme assigns signature capabilities to a group of signers and enables the user to acquire a message's signature issued by the signers without leaking the message content. Designing an efficient identity-based threshold blind signature scheme based on the standard model is of great significance. In this study, an identity-based threshold blind signature (IBTBS) scheme is proposed so as to achieve the decentralisation of the signer power and we prove our new scheme's security which includes unforgeability, blindness and robustness in standard model. A performance comparative analysis is conducted between our new scheme and prior other schemes. The analysis shows that our new scheme is efficient which only needs three bilinear pairing operations in verification algorithm and our scheme possesses higher security. Our new scheme is identity-based which remove certificate management issue in the public key infrastructure (PKI). Inderscience Publishers - linking academia, business and industry through research

Title: Identity-based threshold blind signature scheme in standard model

Authors: Yunyun Qu; Xia Wang; Cuiju Ke; Miaomiao Yang; Lunzhi Deng

Addresses: School of Mathematical Sciences, Guizhou Provincial Specialized Key Laboratory of Information Security Technology in Higher Education Institutions, Guizhou Normal University, Gui'an New District – 550025, China; Guizhou Key Laboratory of NewGen Cyberspace Security, Guiyang – 550001, China ' School of Mathematical Sciences, Guizhou Normal University, Gui'an New District – 550025, China ' School of Mathematical Sciences, Guizhou Normal University, Gui'an New District – 550025, China ' School of Mathematical Sciences, Guizhou Normal University, Gui'an New District – 550025, China ' School of Mathematical Sciences, Guizhou Provincial Specialized Key Laboratory of Information Security Technology in Higher Education Institutions, Guizhou Normal University, Gui'an New District – 550025, China

Abstract: The threshold blind signature scheme assigns signature capabilities to a group of signers and enables the user to acquire a message's signature issued by the signers without leaking the message content. Designing an efficient identity-based threshold blind signature scheme based on the standard model is of great significance. In this study, an identity-based threshold blind signature (IBTBS) scheme is proposed so as to achieve the decentralisation of the signer power and we prove our new scheme's security which includes unforgeability, blindness and robustness in standard model. A performance comparative analysis is conducted between our new scheme and prior other schemes. The analysis shows that our new scheme is efficient which only needs three bilinear pairing operations in verification algorithm and our scheme possesses higher security. Our new scheme is identity-based which remove certificate management issue in the public key infrastructure (PKI).

Keywords: threshold signature; blind signature; bilinear pairing; standard model.

DOI: 10.1504/IJAHUC.2026.153841

International Journal of Ad Hoc and Ubiquitous Computing, 2026 Vol.52 No.1, pp.49 - 59

Received: 18 May 2025
Accepted: 13 Oct 2025
Published online: 27 May 2026 *

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Title: Identity-based threshold blind signature scheme in standard model

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