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Multi-Keyword Searchable Encryption for E-Health System With Multiple Data Writers and Readers

Multi-Keyword Searchable Encryption for E-Health System With Multiple Data Writers and Readers
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Author(s): Dhruti P. Sharma (Sarvajanik College of Engineering and Technology, India) and Devesh C. Jinwala (S. V. National Institute of Technology, India)
Copyright: 2022
Pages: 25
Source title: Implementing Data Analytics and Architectures for Next Generation Wireless Communications
Source Author(s)/Editor(s): Chintan Bhatt (Charotar University of Science and Technology, India), Neeraj Kumar (Thapar University, India), Ali Kashif Bashir (Manchester Metropolitan University, UK) and Mamoun Alazab (Charles Darwin University, Australia)
DOI: 10.4018/978-1-7998-6988-7.ch007

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Abstract

E-health is a cloud-based system to store and share medical data with the stakeholders. From a security perspective, the stored data are in encrypted form that could further be searched by the stakeholders through searchable encryption (SE). Practically, an e-health system with support of multiple stakeholders (that may work as either data owner [writer] or user [reader]) along with the provision of multi-keyword search is desirable. However, the existing SE schemes either support multi-keyword search in multi-reader setting or offer multi-writer, multi-reader mechanism along with single-keyword search only. This chapter proposes a multi-keyword SE for an e-health system in multi-writer multi-reader setting. With this scheme, any registered writer could share data with any registered reader with optimal storage-computational overhead on writer. The proposed scheme offers conjunctive search with optimal search complexity at server. It also ensures security to medical records and privacy of keywords. The theoretical and empirical analysis demonstrates the effectiveness of the proposed work.

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