Security and privacy are primary concerns in IoT management. Security breaches in IoT resources, such as smart sensors, can leak sensitive data and compromise the privacy of individuals. Effective IoT management requires a comprehensive approach to prioritize access security and data privacy protection. Digital twins create virtual representations of IoT resources. Blockchain adds decentralization, transparency, and reliability to IoT systems. This research integrates digital twins and blockchain to manage access to IoT data streaming. Digital twins are used to encapsulate data access and view configurations. Access is enabled on digital twins, not on IoT resources directly. Trust structures programmed as smart contracts are the ones that manage access to digital twins. Consequently, IoT resources are not exposed to third parties, and access security breaches can be prevented. Blockchain has been used to validate digital twins and store their configuration. The research presented in this paper enables multitenant access and customization of data streaming views and abstracts the complexity of data access management. This approach provides access and configuration security and data privacy protection.

翻译：安全与隐私是物联网管理中的核心关切。物联网资源（如智能传感器）的安全漏洞可能导致敏感数据泄露，并侵犯个人隐私。有效的物联网管理需要一种全面方法来优先保障访问安全与数据隐私保护。数字孪生技术可创建物联网资源的虚拟表示，而区块链则为物联网系统提供去中心化、透明性与可靠性。本研究将数字孪生与区块链相结合，以管理物联网数据流的访问。数字孪生用于封装数据访问与视图配置，访问权限仅赋予数字孪生，而非直接作用于物联网资源。基于智能合约编程的信任结构负责管理数字孪生的访问权限。由此，物联网资源不会暴露给第三方，且可防范访问安全漏洞。区块链被用于验证数字孪生并存储其配置。本文提出的研究支持多租户访问与数据流视图的定制化，并简化了数据访问管理的复杂性。该方法提供了访问与配置安全性及数据隐私保护。