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

摘要： 随着“互联网+政务服务”建设的深度推进，电子政务系统对安全认证与可信交互的需求愈发迫切。传统基于智能密码钥匙的签名方案，在分布式政务协同、跨部门数据共享场景下，存在物理介质依赖突出、运维管理成本高、单点故障风险等短板。本文将协同签名技术应用于电子政务业务，融合分布式密钥生成与门限签名机制构建新型签名体系，重点研究基于SM2椭圆曲线公钥密码算法的协同签名在电子政务场景下的落地应用。在剖析传统认证与数字签名模式局限性的基础上，系统阐述SM2协同签名的理论基础、技术架构、实现流程及其政务典型业务场景。研究结果表明，该技术可降低对物理密码介质的依赖，提升密钥管理效率，兼顾政务业务的安全性与使用便捷性，可为数字政务可信交互提供新的技术支撑。

关键词: 协同签名, 数字签名, 政务服务, 身份认证