Achieving Efficient and Secure Data Acquisition for Cloud-Supported Internet of Things in Smart Grid
Achieving Efficient and Secure Data Acquisition for Cloud-Supported Internet of Things in Smart Grid
复制标题
为智能电网中云支持的物联网实现高效、安全的数据采集
DOI：
10.1109/jiot.2017.2690522
复制
发表时间：
2017-12-01
影响因子：
10.6
通讯作者：
Du, Xiaojiang
中科院分区：
文献类型：
--
作者：
Guan, Zhitao;Li, Jing;Du, Xiaojiang
云支持的物联网（Cloud-IoT）已广泛部署在智能电网系统中。物联网前端负责数据采集和状态监控，而大量数据存储和管理在云服务器中。由于电网相关数据的敏感性和海量性，在数据采集和传输过程中实现数据的安全性和系统的高效性具有重要的意义和挑战性。本文提出了一种基于密文策略属性加密的高效安全的数据获取方案。从终端采集的数据将被划分成块，并依次使用其对应的访问子树进行加密，从而可以并行地处理数据加密和数据传输。此外，我们使用门限秘密共享方法保护访问树的信息，可以保护数据的隐私性和完整性，防止用户使用未经授权的属性集。正式分析表明，该方案可以满足智能电网中云物联网的安全需求。数值分析和实验结果表明，与其他流行的方法相比，我们的方案可以有效地减少时间开销。
Cloud-supported Internet of Things (Cloud-IoT) has been broadly deployed in smart grid systems. The IoT front-ends are responsible for data acquisition and status supervision, while the substantial amount of data is stored and managed in the cloud server. Achieving data security and system efficiency in the data acquisition and transmission process are of great significance and challenging, because the power grid-related data is sensitive and in huge amount. In this paper, we present an efficient and secure data acquisition scheme based on ciphertext policy attribute-based encryption. Data acquired from the terminals will be partitioned into blocks and encrypted with its corresponding access subtree in sequence, thereby the data encryption and data transmission can be processed in parallel. Furthermore, we protect the information about the access tree with threshold secret sharing method, which can preserve the data privacy and integrity from users with the unauthorized sets of attributes. The formal analysis demonstrates that the proposed scheme can fulfill the security requirements of the Cloud-IoT in smart grid. The numerical analysis and experimental results indicate that our scheme can effectively reduce the time cost compared with other popular approaches.