Blockchain-Based Cloud Security Management System for Hospital

Abstract

Cloud-edge healthcare systems aim to provide low-latency services to both doctors and patients by leveraging storage and computing capabilities located on hospital servers. However, these servers often need to be more trusted and possess limited computing resources, raising concerns regarding data integrity verification. In this paper, we introduce a blockchain-based solution to tackle this challenge. Our approach involves the development of a distributed data integrity verification method that eliminates the need for a third-party auditor. Data is segmented into smaller chunks and hashed to create a hash table, from which verification tags are generated using column-based techniques and a secret string derived from a pseudo-random function. Furthermore, we present a comprehensive blockchain-based data integrity auditing system, which includes mechanisms for verifying the frequency of verification and defining the structure of blocks. Additionally, we conduct a thorough security analysis to assess the resilience of our system against common attacks. Finally, we evaluate the effectiveness of our proposed system against two leading schemes in a simulated cloud-edge healthcare environment. Our results confirm that our system can ensure data integrity without compromising efficiency.