Abstract: With the rapid development of new-generation information technologies such as big data, cloud computing, and artificial intelligence, data has become a basic strategic resource and key production factor in the digital age. In addition to emphasizing the efficient use of data and maximizing the value of data in the National Fourteenth Five-Year Plan, it is also clear that the protection of data security must be strengthened. This article is based on the data security concept of "identifying data, dynamic protection, sorting out roles, clarifying processes, and precise management and control". It relies on data security label technology with data security level evaluation models and cryptography technology providing basic information support for the security protection of each link in the personal data life cycle. Combined with the object-centric integration, management, and sharing of personal data in the personal data space, this article provides solutions for the efficient use of personal data and security protection.

Key words: data security, data security label, data governance, data space, data fusion

摘要： 随着大数据、云计算和人工智能等新一代信息技术的快速发展，数据已成为数字时代的基础性战略资源和关键生产要素．国家十四五规划中除了强调数据的高效使用，最大程度发挥数据的价值之外，还明确必须加强数据安全的保护．本文基于“标识数据、动态防护、梳理角色、明确流程、精确管控”的数据安全理念，依托于以数据安全等级评估模型和密码学技术为核心的数据安全标识技术为个人数据生命周期中各个环节的安全防护提供了基础的信息支撑，结合个人数据空间以对象为中心融合、管理以及分享个人数据的特点，为个人数据的高效利用以及安全防护提供了解决方案．

关键词: 数据安全, 数据安全标识, 数据治理, 数据空间, 数据融合