An Efficient Ciphertext-Policy Weighted Attribute-Based Encryption for the Internet of Health Things

The Internet of Health Things (IoHT) is a medical concept that describes uniquely identifiable devices connected to the Internet that can communicate with each other. As one of the most important components of smart health monitoring and improvement systems, the IoHT presents numerous challenges, am...

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Bibliographic Details
Published in:IEEE journal of biomedical and health informatics 2022-05, Vol.26 (5), p.1949-1960
Main Authors: Li, Hang, Yu, Keping, Liu, Bin, Feng, Chaosheng, Qin, Zhiguang, Srivastava, Gautam
Format: Article
Language:English
Subjects:
0-1 coding
Access control
access policy
Algorithms
ciphertext-policy weighted attribute-based encryption
Cloud Computing
Computer applications
Computer Security
Cybersecurity
Encryption
Humans
Internet
Internet of Health Things
Internet of Things
Logic gates
Medical services
Policy
Security
Surgery
Technology
weighted attribute
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Summary:The Internet of Health Things (IoHT) is a medical concept that describes uniquely identifiable devices connected to the Internet that can communicate with each other. As one of the most important components of smart health monitoring and improvement systems, the IoHT presents numerous challenges, among which cybersecurity is a priority. As a well-received security solution to achieve fine-grained access control, ciphertext-policy weighted attribute-based encryption (CP-WABE) has the potential to ensure data security in the IoHT. However, many issues remain, such as inflexibility, poor computational capability, and insufficient storage efficiency in attributes comparison. To address these issues, we propose a novel access policy expression method using 0-1 coding technology. Based on this method, a flexible and efficient CP-WABE is constructed for the IoHT. Our scheme supports not only weighted attributes but also any form of comparison of weighted attributes. Furthermore, we use offline/online encryption and outsourced decryption technology to ensure that the scheme can run on an inefficient IoT terminal. Both theoretical and experimental analyses show that our scheme is more efficient and feasible than other schemes. Moreover, security analysis indicates that our scheme achieves security against a chosen-plaintext attack.
ISSN:2168-2194
2168-2208
DOI:10.1109/JBHI.2021.3075995