Article: Design and optimisation of multi-party secure computing protocols supporting dynamic participant switching Journal: International Journal of Ad Hoc and Ubiquitous Computing (IJAHUC) 2026 Vol.52 No.5 pp.25 - 35 Abstract: Most existing SMPC protocols assume static participants, unsuitable for dynamic scenarios where participant numbers and identities change. This paper proposes an SMPC protocol enabling dynamic participant switching, introducing a dynamically joinable model with variable committee sizes per round and supporting arbitrary member counts. It uses secret sharing to transfer computations between participants without revealing intermediates and consolidates all validations into a dedicated phase to reduce communication complexity. Experiments with seven-member committees show its communication costs (for 10,000-10,000,000 data entries) and computational overheads (for 10,000,000 entries) outperform existing protocols. A platform based on Spring Boot and MyBatis, integrating libscapi for core crypto operations, is developed with optimised architecture and visualisation tools. The protocol offers efficient, secure solutions for data sharing and collaboration, with significant theoretical and practical value. Inderscience Publishers - linking academia, business and industry through research

Title: Design and optimisation of multi-party secure computing protocols supporting dynamic participant switching

Authors: Zhipeng Li; Haiping Zhao; Shaobo Liu; Hao Yang; Shuo Shen; Rui Dong; Yu Zhang

Addresses: Information and Telecommunication Company, State Grid Gansu Electric Power Company, Lanzhou 730000, Gansu, China ' Information Operation and Maintenance Division, Gansu Tongxing Intelligent Technology Development Co., Ltd., Lanzhou 730050, Gansu, China ' Information and Telecommunication Company, State Grid Gansu Electric Power Company, Lanzhou 730000, Gansu, China ' Information and Telecommunication Company, State Grid Gansu Electric Power Company, Lanzhou 730000, Gansu, China ' Information and Telecommunication Company, State Grid Gansu Electric Power Company, Lanzhou 730000, Gansu, China ' Information and Telecommunication Company, State Grid Gansu Electric Power Company, Lanzhou 730000, Gansu, China ' Comprehensive Service Center, State Grid Gansu Electric Power Company, Lanzhou 730000, Gansu China

Abstract: Most existing SMPC protocols assume static participants, unsuitable for dynamic scenarios where participant numbers and identities change. This paper proposes an SMPC protocol enabling dynamic participant switching, introducing a dynamically joinable model with variable committee sizes per round and supporting arbitrary member counts. It uses secret sharing to transfer computations between participants without revealing intermediates and consolidates all validations into a dedicated phase to reduce communication complexity. Experiments with seven-member committees show its communication costs (for 10,000-10,000,000 data entries) and computational overheads (for 10,000,000 entries) outperform existing protocols. A platform based on Spring Boot and MyBatis, integrating libscapi for core crypto operations, is developed with optimised architecture and visualisation tools. The protocol offers efficient, secure solutions for data sharing and collaboration, with significant theoretical and practical value.

Keywords: multiparty secure computing; secret sharing; participant role switching.

DOI: 10.1504/IJAHUC.2026.154097

International Journal of Ad Hoc and Ubiquitous Computing, 2026 Vol.52 No.5, pp.25 - 35

Received: 31 Jul 2025
Accepted: 22 Dec 2025
Published online: 12 Jun 2026 *

Title: Design and optimisation of multi-party secure computing protocols supporting dynamic participant switching

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