DSAS: A Secure Data Sharing and Authorized Searchable Framework for e-Healthcare System

DOI

10.2991/978-94-6239-654-8_44How to use a DOI?

Keywords

Electronic Health Records; Cloud Computing; Searchable Encryption; Access Control; Healthcare Security; DSAS

Abstract

Electronic Health Record (EHR) systems including cloud-based versions are scalable and allow access remotely, however, there is a high risk posed by the lack of data confidentiality, unauthorized access, and regulatory non-compliance. Available solutions like the Attribute-Based Encryption (ABE), Proxy Re-Encryption (PRE), and blockchain-based audit systems are very secure but not applicable in real-life situations in a hospital setting as they are computationally expensive, their key management is complicated, and their performance is sluggish. To overcome these shortcomings, we introduce DSAS, a lightweight Data Sharing and Authorized Search architecture that integrates AES-256-GCM encryption, RSA-2048 key wrapping, the role access control and the searchable Symmetric Encryption (SSE). DSAS provides patients with the ability to store encrypted EHRs in the cloud, open and close access to healthcare professionals dynamically, and conduct privacy-preserving keyword search without making plaintext available to the cloud. Also, the HMACchained audit log can be tamper-resistant, making the accountability and HIPAA and GDPR standards compliance. Through experimental analysis, it is proven that DSAS can provide lowlatency encryption, encrypted search at speed, and re-keying overhead, and thus is a viable, deployable, and secure solution to next-generation e-Healthcare systems.

Copyright

© 2026 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - M. Appasamy
AU  - S. Madhu
AU  - R. Deepa
PY  - 2026
DA  - 2026/04/24
TI  - DSAS: A Secure Data Sharing and Authorized Searchable Framework for e-Healthcare System
BT  - Proceedings of the Global Conference on Sustainable Energy Systems, Smart Electronics and Intelligent Computing (GCSESEIC 2025)
PB  - Atlantis Press
SP  - 547
EP  - 560
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6239-654-8_44
DO  - 10.2991/978-94-6239-654-8_44
ID  - Appasamy2026
ER  -