Efficient Policy-Hiding and Large Universe Attribute-Based Encryption With Public Traceability for Internet of Medical Things
Efficient Policy-Hiding and Large Universe Attribute-Based Encryption With Public Traceability for Internet of Medical Things
复制标题
DOI：
10.1109/jiot.2021.3051362
复制
发表时间：
2021-07
影响因子：
10.6
通讯作者：
Peng Zeng;Zhiting Zhang;Rongxing Lu;K. Choo
中科院分区：
文献类型：
--
作者：
Peng Zeng;Zhiting Zhang;Rongxing Lu;K. Choo
现代医疗系统与其他系统紧密集成和互连，诸如包括促进远程医疗保健服务的医疗物联网（IoMT）设备的那些系统，比如在流行病期间（例如，COVID-19）。基于属性的加密（ABE）是一种很有前途的加密原语，可以在密文环境中支持细粒度的访问控制;换句话说，ABE可以用于确保IoMT生态系统中的数据机密性和用户隐私。在这篇文章中，我们提出了一个有效的部分策略隐藏和大论域ABE计划与公共可追溯性，以构建一个实用的IoMT系统（以下简称为PTioMT）。该系统具有以下特点：1）访问策略部分隐藏，仅显示非敏感属性标签/名称，敏感属性值隐藏在加密的电子健康记录中; 2）属性的数量与公共参数无关，可以任意大; 3）可以有效地跟踪任何公开解密密钥的用户;以及4）在解密过程期间需要较少的双线性对运算。安全性分析和性能评估证明了PTioMT的安全性和有效性。
Modern day medical systems are closely integrated and interconnected with other systems, such as those comprising Internet-of-Medical Things (IoMT) devices that facilitate remote healthcare services, say during pandemics (e.g., COVID-19). Attribute-based encryption (ABE) is a promising cryptographic primitive to support fine-grained access control in the ciphertext environment; in other words, ABE can potentially be used to ensure data confidentiality and user privacy in the IoMT ecosystem. In this article, we propose an efficient partially-policy-hidden and large universe ABE scheme with public traceability to construct a practical IoMT system (hereafter referred to as PTIoMT). The system is designed to achieve the following features: 1) the access policy is partially hidden: only nonsensitive attribute labels/names are displayed, while sensitive attribute values are hidden in the encrypted electronic health records (EHRs); 2) the number of the attributes is independent of the public parameters and, thus, can be arbitrarily large; 3) any user who discloses the decryption key can be efficiently tracked; and 4) fewer bilinear pairing operations are required during the decryption process. The security analysis and performance evaluation demonstrate the security and efficiency of PTIoMT.