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GB/T 45994-2025: Information technology - Big data - Reference model for trusted cross-domain data sharing
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GB/T 45994-2025: Information technology - Big data - Reference model for trusted cross-domain data sharing

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ICS 35.240 CCSL70 National Standard of the People's Republic of China Information technology big data cross-domain data trust Shared Reference Architecture cross-domain data sharing Implementation on February 1, 2026 State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Abbreviations 2 5 Reference Architecture 3 6 Data User Functional Requirements 3 6.1 Overview 3 6.2 Data Service Interconnection 4 6.3 Safety Use Control 4 7 Data Provider Functional Requirements 4 7.1 Overview 4 7.2 Data Sharing Service Layer 5 7.3 Data Sharing Directory Layer 5 7.4 Semantic Representation and Association Layer 6 7.5 Data Resource Layer 6 7.6 Data Security and Privacy Protection 6 8 Data Intermediary Functional Requirements 7 8.1 Overview 7 8.2 Cross-domain services 8 8.3 Cross-domain alignment 8 8.4 Cross-domain Control 9 8.5 Cross-Domain Computing 10 8.6 Cross-domain search 10 Reference 11 Preface This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed and coordinated by the National Technical Committee for Information Technology Standardization (SAC/TC28). This document was drafted by. Renmin University of China, China Electronics Technology Standardization Institute, Ant Group Co., Ltd., Beijing Big Data Center, China Electronics Data Industry Group Co., Ltd., Kunlun Digital Intelligence Technology Co., Ltd., National Information Center, Beijing Big Data Advanced Technology Research Institute, Xiamen Meiya Pico Information Security Research Institute Co., Ltd., Huawei Cloud Computing Technology Co., Ltd., Peking University, Tsinghua University, JD City (Beijing) Digital Technology Co., Ltd., Guizhou University, China Unicom Data Intelligence Co., Ltd., China Electronics Science and Technology Big Data Research Institute Co., Ltd., Beijing Institute of Technology, China Mobile Communications Corporation Research Institute, China Railway Construction Corporation Limited, Fujian Xingyun Big Data Application Service Co., Ltd. Co., Ltd., Henan Zhongshi Xinke Cultural Industry Co., Ltd., Jiangsu Electric Power Information Technology Co., Ltd., Inspur Cloud Information Technology Co., Ltd., China Economic Digital Finance (Dalian) Innovation Technology Co., Ltd. and Mashang Consumer Finance Co., Ltd. The main drafters of this document are. Du Xiaoyong, Chen Jinchuan, Wang Lan, Li Hongyu, Gao Song, Dong Jian, Zhang Qun, Lu Zhipeng, Lin Xiufeng, Si Hongwei, Yang Jingru, Huang Rongchang, Zhao Lili, Liu Xinzhe, Liu Shixia, Zhang Junbo, Li Hui, Lu Wei, Wang Weizhong, Zhang Xiaomeng, Zheng Xi, Jia Xiaofeng, Ma Ying, Wei Chao, Li Fengfeng, Liu Yi, Wu Zijian, Fan Ju, Huang Keman, Wang Xiangnan, Yi Xiuwen, Liu Chi, Cao Yang, Zhao Pengfei, Xu Ziyuan, Fang Chen, Chen Wenshan, Xia Fei, Zhang Ze, Wu Peng, Zhu Weijia, Xiao Xue, Xin Lun, Liu Shaobo, Wu Peng, Zhou Haocheng, and Li Fubao. Information technology big data cross-domain data trust Shared Reference Architecture

1 Scope

This document establishes a reference architecture for cross-domain data trust sharing, including the functions of data providers, data users, and data intermediaries. Requirements and trusted control requirements. This document is intended to guide the architecture design of cross-domain data trusted sharing systems.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 36344-2018 Information technology data quality evaluation indicators GB/T 43697-2024 Data security technology data classification and grading rules

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 cross-domainsharing Scenarios where data providers and data users from multiple different control domains share data. Note. Participants in the cross-domain data sharing process include but are not limited to data providers, data users, data intermediaries, etc. 3.2 Data provider dataprovider The entity that provides data resources and has the right to decide other parties' access, sharing and use rights to their data. 3.3 Data user An organization or individual that obtains and uses data through legal means based on agreements signed with data intermediaries, data providers, etc. 3.4 In cross-domain data sharing, data sharing management specifications are formulated to provide data providers and data users with service docking, data alignment and and cross-domain control and other functions to ensure the secure implementation of cross-domain data services. 3.5 electronic signature Data contained or attached in electronic form in a data message that is used to identify the signatory and indicate that the signatory approves the content. [Source. GB/T 25069-2022, 3.119] ...