Anti-quantum cross-chain identity authentication approach using dynamic group signature

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Abstract

To solve the privacy leakage and identity island problems in cross-chain interaction, we propose an anti-quantum cross-chain identity authentication approach based on dynamic group signature (DGS-AQCCIDAA) for smart education. The relay-based cross-chain model promotes interconnection in heterogeneous consortium blockchains. DGS is used as the endorsement strategy for cross-chain identity authentication. Our approach can ensure quantum security under the learning with error (LWE) and inhomogeneous small integer solution (ISIS) assumptions, and it uses non-interactive zero-knowledge proof (NIZKP) to protect user identity privacy. Our scheme has low calculation overhead and provides anonymous cross-chain identity authentication in the smart education system.

摘要

为解决区块链跨链交互中存在的用户隐私泄露和身份孤岛问题, 基于动态群签名技术, 提出一种面向智慧教育的抗量子跨链身份认证方法 (DGS-AQCCIDAA)。使用基于中继的跨链安全模型, 实现异构联盟链的互联互通。动态群签名被用作跨链身份认证的背书策略。所提方法具有容错学习和非齐次小整数解假设下的抗量子安全性, 并使用非交互式零知识证明来保护用户身份隐私。所提方法计算开销低, 可为智慧教育系统中的跨区块链提供匿名身份认证。

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Authors and Affiliations

School of Cyberspace Security, Xi’an University of Posts & Telecommunications, Xi’an, 710121, China

Huifang Yu ( 俞惠芳 ) & Mengjie Huang ( 黄梦杰 )
Ministry of Education Key Laboratory of Cyberspace Security, Information Engineering University, Zhengzhou, 450001, China

Huifang Yu ( 俞惠芳 )

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Huifang Yu ( 俞惠芳 )

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Mengjie Huang ( 黄梦杰 )

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Huifang YU designed the research. Huifang YU and Mengjie HUANG drafted and revised the paper.

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Correspondence to Huifang Yu ( 俞惠芳 ) .

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Both authors declare that they have no conflict of interest.

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Project supported by the Horizontal Project (No. HX2024-002), the Open Foundation of Key Laboratory of Cyberspace Security of the Ministry of Education of China (No. KLCS20240102), and the Natural Science Basis Research Program of Shaanxi Province (Nos. 2025JC-YBMS-652 and 2025JC-YBMS-676)

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Yu, H., Huang, M. Anti-quantum cross-chain identity authentication approach using dynamic group signature. Front Inform Technol Electron Eng 26 , 742–752 (2025). https://doi.org/10.1631/FITEE.2400443

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Received : 27 May 2024
Accepted : 10 October 2024
Published : 02 June 2025
Issue Date : May 2025
DOI : https://doi.org/10.1631/FITEE.2400443

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TP309