随着MBD技术在网络化协同制造中的广泛应用，三维几何模型逐渐成为产品设计制造的单一数据来源。作为一种重要的生产要素，三维几何模型需要在各协同主体间共享、流转与交互。为确保各协作主体的商业利益以及设计制造数据的完整性，对三维几何模型的安全认证极其重要。本项目以网络化协同制造为应用背景，针对三维几何模型的安全可靠传输，对三维几何模型的安全认证理论与方法展开深入研究，主要包括：面向网络化协同制造的三维几何模型安全认证模型、三维几何模型加密域可逆水印方法、三维几何模型安全认证协议、三维几何模型安全认证的性能评测等。通过研究，构建网络化协同制造中三维几何模型在各协作主体间交互的安全认证模型，提出用于三维几何模型完整性认证、版权保护的新方法，实现三维几何模型在协作主体间的安全流转，完善三维几何模型安全认证的性能评测体系，支撑MBD技术在网络化协同制造中的安全可靠应用。

With the wide applications of MBD (Model Based Definition) technology in networked collaborative manufacturing, 3D geometric model has gradually become a single data source for product design and manufacturing. As an important production factor, 3D geometric model needs to be shared, flowed, and interacted among collaborative agents. To ensure the commercial interests of the collaborative agents and the integrity of design and manufacturing data, it is very important to authenticate the 3D geometric model. Based on the application background of networked collaborative manufacturing, this proposal is aiming at the secure and reliable transmission of 3D geometric model, and the theories and methods for authenticating 3D geometric model are deeply studied. It is mainly focused on the following aspects: security authentication model for 3D geometric models, reversible watermarking methods for 3D geometric model in encryption domain, authentication protocols for 3D geometric models, performance evaluation of 3D geometric model's security authentication etc. Through the research, the security authentication model of 3D geometric model interaction among collaborative agents in networked collaborative manufacturing is constructed, new methods for integrity authentication and copyright protection of 3D geometric model are put forward, the secure flow of 3D geometric model among collaborative agents is realized, and the evaluation system of the security authentication of 3D geometric model is improved. It will eventually support the secure and reliable application of MBD technology in networked collaborative manufacturing.