Byzantine Fault-Tolerant Architecture in Cloud Data Management

Byzantine Fault-Tolerant Architecture in Cloud Data Management

Mohammed A. AlZain, Alice S. Li, Ben Soh, Mehedi Masud
Copyright: © 2019 |Pages: 14
DOI: 10.4018/978-1-5225-8176-5.ch046
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Abstract

One of the main challenges in cloud computing is to build a healthy and efficient storage for securely managing and preserving data. This means a cloud service provider needs to make sure that its clients' outsourced data are stored securely and, data queries and retrievals are executed correctly and privately. On the other hand, it may also mean businesses are willing to outsource their data to a third party only if they trust their data are not accessible and visible to the service provider and other non-authorized parties. However, one of the major obstacles faced here for ensuring data reliability and security is Byzantine faults. While Byzantine fault tolerance (BFT) has received growing attention from the academic research community, the research done is generally from the distributed computing point of view, and hence finds little practical use in cloud computing. To that end, the focus of this paper is to discuss how these faults can be tolerated with the authors' proposed conceptualization of Byzantine data faults and fault-tolerant architecture in cloud data management.
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If something happens to the data or if the data is corrupted by the service provider, the service provider is responsible for data restoration. The service provider should have a mechanism to recover or back-up the data (Agrawal, El Abbadi et al., 2009). There are three issues to be addressed for wide adaptation of the data storage framework in terms of data security: Cryptographic techniques, Private Information Retrieval, and Data Replication Techniques (Agrawal, El Abbadi et al., 2009). These techniques are commonly used for secure data outsourcing.

HAIL (High Availability and Integrity Layer) (Bowers, Juels et al., 2009) is another example of a protocol that controls multiple clouds. HAIL is a distributed cryptographic system that permits a set of servers to ensure that the client’s stored data is retrievable and integral. HAIL provides a software layer to address the availability and integrity of the stored data in multi-clouds (Bowers, Juels et al., 2009).

Agrawal et al. (Agrawal, El Abbadi et al., 2009) discuss the issue of information distribution (in terms of data query and retrieval) with the aim of showing that there is an orthogonal approach which is based on information distribution instead of encryption in the area of data and computer security. The need to communicate important or private information from one party to another instigated most of the work on data security. Agrawal et al. (Agrawal, El Abbadi et al., 2009) introduced Shamir's Secret Sharing algorithm (Shamir, 1979) as a solution for the privacy issue.

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