Blockchain-powered distributed data auditing scheme for cloud-edge healthcare system

Cyber Security and Applications Pub Date : 2023-04-06 DOI:10.1016/j.csa.2023.100017

Yi Li , Meiqin Tang

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引用次数: 2

Abstract

Cloud-edge healthcare system provides storage and computing functions at the hospital servers, bringing low latency for doctors and patients. However, hospital servers cannot be trusted and have limited computing resources. Data integrity verification for the cloud-edge healthcare system is an urgent concern. To this end, we proposed a data integrity auditing scheme based on blockchain. First, a distributed data integrity verification method without a third-party auditor is designed. The data are divided into smaller parts and hashed into a hash table. The verification tag is constructed according to the column of the hash table and secret string generated by a pseudo-random function. Then, a detailed blockchain-based data integrity auditing scheme is proposed, including Proof of Auditing Frequency and block structure. Besides, a security analysis for the common attacks is given. Finally, the proposed scheme is evaluated against two start-of-the-art schemes in a simulated cloud-edge healthcare system. The results demonstrate that the proposed scheme can verify data integrity without losing efficiency.

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区块链驱动的云边缘医疗系统分布式数据审计方案

云边缘医疗系统在医院服务器上提供存储和计算功能，为医生和患者带来低延迟。然而，医院服务器是不可信的，并且计算资源有限。云边缘医疗系统的数据完整性验证是一个紧迫的问题。为此，我们提出了一种基于区块链的数据完整性审计方案。首先，设计了一种无需第三方审计的分布式数据完整性验证方法。数据被分成更小的部分，并被散列到一个散列表中。验证标签是根据哈希表的列和由伪随机函数生成的秘密字符串构建的。然后，提出了一个详细的基于区块链的数据完整性审计方案，包括审计频率证明和块结构。此外，还对常见的攻击进行了安全性分析。最后，在模拟云边缘医疗保健系统中，将所提出的方案与两个最先进的方案进行了比较评估。结果表明，该方案能够在不损失效率的情况下验证数据的完整性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cyber Security and Applications

CiteScore

5.20

自引率

0.00%

发文量