Abstract: At present, blockchain technology mainly realized the protection and verification of data subjects in data sharing applications, and for sensitive data, it should also focus on the storage and supervision of user behavior and authorized information. In this regard, this paper proposes a blockchainbased secure sharing scheme for sensitive data: a basic environment for secure sharing and data verification is built through technologies such as consortium blockchain and interplanetary file system. Then the secure sharing of sensitive data, reliable storage of user’s behavior and reasonable supervision of authorized information can be realized by sensitive data storage and sharing algorithms. The system implementation and analysis show that the scheme can share all kinds of sensitive data securely, ensure the security of storage, access and authorization of sensitive data, and meet the needs of sensitive data sharing.

Key words: sensitive data, data sharing, blockchain, interplanetary file system

摘要： 当前，区块链技术在数据共享应用中主要实现了数据主体的保护和校验，对于敏感数据而言，还应重点研究对用户行为和授权信息的存证与监管等问题.对此，提出一种基于区块链的敏感数据安全共享方案：通过联盟区块链、星际文件系统等技术，构建安全共享与数据验证的基础环境；通过设计敏感数据存储和分享算法，实现敏感数据的安全共享、用户行为的可靠存证及授权信息的合理监管.系统实现与分析表明，该方案能够实现各类型敏感数据的安全共享，保障敏感数据的存储、授权及访问安全，满足敏感数据的共享需求.关键词敏感数据；数据共享；区块链；星际文件系统；数据加密

关键词: 敏感数据, 数据共享, 区块链, 星际文件系统