@article {Panarello2018,
	title = {Blockchain and iot integration: A systematic survey},
	journal = {Sensors - MDPI},
	volume = {18},
	number = {8},
	year = {2018},
	note = {cited By 10},
	publisher = {MDPI AG},
	abstract = {<p>The Internet of Things (IoT) refers to the interconnection of smart devices to collect data and make intelligent decisions. However, a lack of intrinsic security measures makes IoT vulnerable to privacy and security threats. With its {\textquotedblleft}security by design,{\textquotedblright} Blockchain (BC) can help in addressing major security requirements in IoT. BC capabilities like immutability, transparency, auditability, data encryption and operational resilience can help solve most architectural shortcomings of IoT. This article presents a comprehensive survey on BC and IoT integration. The objective of this paper is to analyze the current research trends on the usage of BC-related approaches and technologies in an IoT context. This paper presents the following novelties, with respect to related work: (i) it covers different application domains, organizing the available literature according to this categorization, (ii) it introduces two usage patterns, i.e., device manipulation and data management (open marketplace solution), and (iii) it reports on the development level of some of the presented solutions. We also analyze the main challenges faced by the research community in the smooth integration of BC and IoT, and point out the main open issues and future research directions. Last but not least, we also present a survey about novel uses of BC in the machine economy. {\textcopyright} 2018 by the authors. Licensee MDPI, Basel, Switzerland.</p>
},
	keywords = {Blockchain, Cryptography, Future research directions, Information management, Integration, Intelligent decisions, Internet of thing (IOT), Internet of Things, Privacy and security, Research communities, Security by designs, Security measure, Security requirements, Surveying, Surveys},
	issn = {14248220},
	doi = {10.3390/s18082575},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85051401073\&doi=10.3390\%2fs18082575\&partnerID=40\&md5=07247598c49b9507bea67e04bb3e325f},
	author = {Alfonso Panarello and Nachiket Tapas and Giovanni Merlino and Francesco Longo and Antonio Puliafito}
}
@proceedings {Tapas2018411,
	title = {Blockchain-Based IoT-cloud authorization and delegation},
	journal = {Proceedings - 2018 IEEE International Conference on Smart Computing, SMARTCOMP 2018},
	year = {2018},
	note = {cited By 0; Conference of 4th IEEE International Conference on Smart Computing, SMARTCOMP 2018 ; Conference Date: 18 June 2018 Through 20 June 2018; Conference Code:138285},
	pages = {411-416},
	publisher = {Institute of Electrical and Electronics Engineers Inc.},
	address = {Taormina, Italy - 18-20 June 2018},
	abstract = {<p>In a Smart City scenario, the authors envisioned an IoT-Cloud framework for the management of boards and resources scattered over a geographic area. It can also become a tool to let device owners contribute freely to the infrastructure. In comparison to datacenter-oriented Cloud middleware, the administrator and the owner of the infrastructure are not one and the same. This translates into the requirement to support delegation-enabled authorization. In this paper, the authors investigate an authorization and delegation model for the IoT-Cloud based on blockchain technology. In particular, the scheme is implemented in the form of smart contracts over the Ethereum platform. Indeed, this approach represents an enhancement, over a function previously designed in a centralized fashion, by enabling the user to audit authorization operations and inspect how access control is actually performed, without blindly trusting the Cloud as a proxy for access to resources. {\textcopyright} 2018 IEEE.</p>
},
	keywords = {Access control, Access to resources, authorization, Blockchain, Cloud middlewares, Clouds, Delegation, Delegation modeling, Ethereum, Geographic areas, Internet of Things, middleware, Smart city, Smart contracts},
	isbn = {9781538647059},
	doi = {10.1109/SMARTCOMP.2018.00038},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85051495365\&doi=10.1109\%2fSMARTCOMP.2018.00038\&partnerID=40\&md5=57e82ce12e19c3286c34b0612a587237},
	author = {Nachiket Tapas and Giovanni Merlino and Francesco Longo}
}
