A Comprehensive Framework for Ensuring Secure Sharing of Electronic Health Records in AWS Environment

Neerukonda, Harsha Venkata Naga Vardhan (2023) A Comprehensive Framework for Ensuring Secure Sharing of Electronic Health Records in AWS Environment. Masters thesis, Dublin, National College of Ireland.

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Abstract

The adoption of cloud servers for storing and sharing electronic health records (EHRs) offers significant benefits but also raises privacy and security concerns. This thesis proposes a comprehensive framework to enable secure EHR sharing in the AWS cloud environment. The framework utilizes Ciphertext-Policy Attribute Based Encryption (CPABE) and Fernet encryption standard to enforce access control and data confidentiality. It allows patients to define access policies to control which healthcare providers can view their records. EHRs are encrypted under these access policies before storing them in the AWS S3 cloud storage. Only users with matching attributes can decrypt the records. A prototype system is implemented to demonstrate the feasibility of the approach. Additionally, deduplication techniques are incorporated to eliminate duplicate EHRs and optimize cloud storage costs. A file-level chunking method is used to detect identical EHR records. The framework was implemented as a web application using Java and JavaScript. The performance evaluation shows the proposed CPABE system achieves faster encryption/decryption speeds compared to the Fernet algorithm, while fernet provided a better compression ratio compared to CPABE. Overall, the proposed approach balances security, access control, and storage efficiency for sensitive health data shared via the cloud. It gives patients control over their records while enabling seamless access for authorized providers. The integration of CPABE, Fernet and deduplication makes it a comprehensive solution tailored for the EHR environment.

Item Type:	Thesis (Masters)
Supervisors:	Name Email Sahni, Vikas UNSPECIFIED
Subjects:	Q Science > QA Mathematics > Electronic computers. Computer science T Technology > T Technology (General) > Information Technology > Electronic computers. Computer science T Technology > T Technology (General) > Information Technology > Cloud computing R Medicine > Healthcare Industry
Divisions:	School of Computing > Master of Science in Cloud Computing
Depositing User:	Ciara O'Brien
Date Deposited:	09 Apr 2025 13:57
Last Modified:	09 Apr 2025 13:57
URI:	https://norma.ncirl.ie/id/eprint/7396

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