Privacy-Preserving Contact Tracing Protocol for Mobile Devices: A Zero-Knowledge Proof Approach

Joseph K. Liu*, Man Ho Au, Tsz Hon Yuen, Cong Zuo, Jiawei Wang, Amin Sakzad, Xiapu Luo, Li Li, Kim Kwang Raymond Choo

*此作品的通讯作者

科研成果: 书/报告/会议事项章节会议稿件同行评审

1 引用 (Scopus)

摘要

In this paper, we propose a privacy-preserving contact tracing protocol for smart phones, and more specifically Android and iOS phones. The protocol allows users to be notified, if they have been a close contact of a confirmed patient. The protocol is designed to strike a balance between privacy, security, and scalability. Specifically, the app allows all users to hide their past location(s) and contact history from the Government, without affecting their ability to determine whether they have close contact with a confirmed patient whose identity will not be revealed. A zero-knowledge protocol is used to achieve such a user privacy functionality. In terms of security, no user can send fake messages to the system to launch a false positive attack. We present a security model and formally prove the security of the protocol. To demonstrate scalability, we evaluate an Android and an iOS implementation of our protocol. A comparative summary shows that our protocol is the most comprehensive and balanced privacy-preserving contact tracing solution to-date.

源语言英语
主期刊名Information Security Practice and Experience - 16th International Conference, ISPEC 2021, Proceedings
编辑Robert Deng, Feng Bao, Guilin Wang, Jian Shen, Mark Ryan, Weizhi Meng, Ding Wang
出版商Springer Science and Business Media Deutschland GmbH
327-344
页数18
ISBN(印刷版)9783030932053
DOI
出版状态已出版 - 2021
已对外发布
活动16th International Conference on Information Security Practice and Experience, ISPEC 2021 - Nanjing, 中国
期限: 17 12月 202119 12月 2021

出版系列

姓名Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
13107 LNCS
ISSN(印刷版)0302-9743
ISSN(电子版)1611-3349

会议

会议16th International Conference on Information Security Practice and Experience, ISPEC 2021
国家/地区中国
Nanjing
时期17/12/2119/12/21

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