Abstract: The core essence of open public data is to fully unleash the potential value and benefits of public data while ensuring data security. By empowering privacy computing, it enables collaborative data utilization, control over data usage and quantity, and the creation of new models for secure data circulation. This helps to eliminate the fundamental contradiction between data security and data utilization in open public data initiatives. However, enabling privacy computing for open public data involves a process that entails both value and risks, which could lead to the breakdown of trust mechanisms and give rise to new data security risks. In response, the optimal solution lies in the collaborative governance of technological measures and legal regulations, transforming privacy computing into data governance technology that adheres to both technological logic and the principles of the rule of law. This includes legal normalization of privacy computing and the organic integration of legal norms and code rules through a dual approach to open public data, achieving mutual benefits between law and technology.