关键词: 协同签名, 数字签名, 政务服务, 身份认证

Abstract: With the in-depth advancement of the “Internet+Government Services” initiative, e-government systems have an increasingly urgent need for secure authentication and trusted interaction. Traditional signature schemes based on cryptographic smart tokens suffer from prominent physical-media dependency, high operation-management costs and single-point-of-failure risks in scenarios such as distributed government collaboration and cross-departmental data sharing. This paper applies collaborative signature technology to e-government services and builds a novel signature system by integrating distributed key generation and threshold cryptography mechanisms. It focuses on the practical deployment of SM2 elliptic-curve public-key-algorithm-based collaborative signatures within e-government scenarios. On the basis of analyzing the limitations of conventional authentication and digital-signature modes, this paper systematically elaborates the theoretical foundation, technical architecture, implementation workflow and typical service scenarios of SM2 collaborative signatures for government businesses. The results demonstrate that the technology mitigates reliance on physical cryptographic media and improves key-management efficiency. It balances security and usability requirements for government services and offers new technical support for trusted interactions in digital government.

Key words: collaborative signature, digital signature, e-government services, identity authentication