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      Validation of Architecture Effectiveness for the Continuous Monitoring of File Integrity Stored in the Cloud Using Blockchain and Smart Contracts

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          Abstract

          The management practicality and economy offered by the various technological solutions based on cloud computing have attracted many organizations, which have chosen to migrate services to the cloud, despite the numerous challenges arising from this migration. Cloud storage services are emerging as a relevant solution to meet the legal requirements of maintaining custody of electronic documents for long periods. However, the possibility of losses and the consequent financial damage require the permanent monitoring of this information. In a previous work named “Monitoring File Integrity Using Blockchain and Smart Contracts”, the authors proposed an architecture based on blockchain, smart contract, and computational trust technologies that allows the periodic monitoring of the integrity of files stored in the cloud. However, the experiments carried out in the initial studies that validated the architecture included only small- and medium-sized files. As such, this paper presents a validation of the architecture to determine its effectiveness and efficiency when storing large files for long periods. The article provides an improved and detailed description of the proposed processes, followed by a security analysis of the architecture. The results of both the validation experiments and the implemented defense mechanism analysis confirm the security and the efficiency of the architecture in identifying corrupted files, regardless of file size and storage time.

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          Blockchains and Smart Contracts for the Internet of Things

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            New directions in cryptography

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                Author and article information

                Contributors
                Role: Academic Editor
                Journal
                Sensors (Basel)
                Sensors (Basel)
                sensors
                Sensors (Basel, Switzerland)
                MDPI
                1424-8220
                29 June 2021
                July 2021
                : 21
                : 13
                : 4440
                Affiliations
                [1 ]Electrical Engineering Department, National Science and Technology Institute on Cybersecurity, University of Brasília (UnB), P.O. Box 4466, Brasília 70910-900, Brazil; robson@ 123456redes.unb.br (R.d.O.A.); desousa@ 123456unb.br (R.T.d.S.J.)
                [2 ]Department of Computer Science, University of Brasília (UnB), P.O. Box 4466, Brasília 70910-900, Brazil; ednacanedo@ 123456unb.br
                Author notes
                [†]

                The authors contributed equally to this work.

                Author information
                https://orcid.org/0000-0001-9919-5001
                https://orcid.org/0000-0002-2159-339X
                https://orcid.org/0000-0002-6717-3374
                https://orcid.org/0000-0003-1101-3029
                Article
                sensors-21-04440
                10.3390/s21134440
                8272124
                34209509
                ecf01f62-ddf1-4928-a50e-9a4310feab2c
                © 2021 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( https://creativecommons.org/licenses/by/4.0/).

                History
                : 25 April 2021
                : 14 June 2021
                Categories
                Article

                Biomedical engineering
                blockchain,cloud computing,data security,smart contracts,trust
                Biomedical engineering
                blockchain, cloud computing, data security, smart contracts, trust

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