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Frontiers of Information Technology & Electronic Engineering
ISSN 2095-9184 (print), ISSN 2095-9230 (online)
2025 Vol.26 No.5 P.742-752
Anti-quantum cross-chain identity authentication approach using dynamic group signature
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.
Key words: Cross-chain; Identity authentication; Dynamic group signature (DGS); Anti-quantum security; Zero-knowledge proof
1西安邮电大学网络空间安全学院，中国西安市，710121
2信息工程大学网络空间安全教育部重点实验室，中国郑州市，450001
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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DOI:
10.1631/FITEE.2400443
CLC number:
TP309
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On-line Access:
2025-06-04
Received:
2024-05-27
Revision Accepted:
2024-10-10
Crosschecked:
2025-06-04