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Open AccessArticle

A Fine-Grained User-Divided Privacy-Preserving Access Control Protocol in Smart Watch

1
College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, China
2
Key Laboratory of Computer Network Technology of Jiangsu Province, Nanjing 210096, China
3
Division of Computer Science, University of Aizu, Aizuwakamatsu 965-8580, Japan
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(9), 2109; https://doi.org/10.3390/s19092109
Received: 9 April 2019 / Revised: 1 May 2019 / Accepted: 4 May 2019 / Published: 7 May 2019
(This article belongs to the Special Issue Threat Identification and Defence for Internet-of-Things)
A smart watch is a kind of emerging wearable device in the Internet of Things. The security and privacy problems are the main obstacles that hinder the wide deployment of smart watches. Existing security mechanisms do not achieve a balance between the privacy-preserving and data access control. In this paper, we propose a fine-grained privacy-preserving access control architecture for smart watches (FPAS). In FPAS, we leverage the identity-based authentication scheme to protect the devices from malicious connection and policy-based access control for data privacy preservation. The core policy of FPAS is two-fold: (1) utilizing a homomorphic and re-encrypted scheme to ensure that the ciphertext information can be correctly calculated; (2) dividing the data requester by different attributes to avoid unauthorized access. We present a concrete scheme based on the above prototype and analyze the security of the FPAS. The performance and evaluation demonstrate that the FPAS scheme is efficient, practical, and extensible. View Full-Text
Keywords: smart watch; privacy preservation; re-encryption; homomorphic computation; attribute-based encryption smart watch; privacy preservation; re-encryption; homomorphic computation; attribute-based encryption
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MDPI and ACS Style

Fang, L.; Li, M.; Zhou, L.; Zhang, H.; Ge, C. A Fine-Grained User-Divided Privacy-Preserving Access Control Protocol in Smart Watch. Sensors 2019, 19, 2109.

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