如今数据已成为了现代社会不可或缺的资源之一，大量的数据是进行数 据挖掘、市场预测的基础。随着数据资源的广泛共享和信息社会中用户数据的 激增，数据之间的流通和共享变得更加复杂。大数据环境下的数据具有分布式、 动态性、高度共享等特点，因此如何安全高效的管理数据是当前的一大难题。 本文基于 Hyperledger Fabric 区块链提出了一种访问控制模型，利用 Java 编写 智能合约实现访问控制的自动判决，以 AES 实现文件的快速加密，CP-ABE 加密技术实现数据的细粒度访问控制，设置映射模块实现隐藏用户属性，保证 了数据的安全性和可靠性。

Data has become an indispensable resource in modern society, and a large amount of data is the basis of data mining and market prediction. With the extensive sharing of data resources and the proliferation of user data in the information society, the flow and sharing of data become more complicated. Data in the big data environment is distributed, dynamic, and highly shared, so managing data safely and efficiently is a big problem. This paper proposes an access control model based on Hyperledger Fabric blockchain, which uses Java to write smart contracts to realize automatic decision of access control, uses AES to realize fast encryption of files, uses CP-ABE encryption technology to realize fine-grained access control of data, and sets mapping module to hidden user attributes. Ensure the security and reliability of data.