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Open AccessJournal ArticleDOI

Blockchains and Smart Contracts for the Internet of Things

TLDR
The conclusion is that the blockchain-IoT combination is powerful and can cause significant transformations across several industries, paving the way for new business models and novel, distributed applications.
Abstract
Motivated by the recent explosion of interest around blockchains, we examine whether they make a good fit for the Internet of Things (IoT) sector. Blockchains allow us to have a distributed peer-to-peer network where non-trusting members can interact with each other without a trusted intermediary, in a verifiable manner. We review how this mechanism works and also look into smart contracts—scripts that reside on the blockchain that allow for the automation of multi-step processes. We then move into the IoT domain, and describe how a blockchain-IoT combination: 1) facilitates the sharing of services and resources leading to the creation of a marketplace of services between devices and 2) allows us to automate in a cryptographically verifiable manner several existing, time-consuming workflows. We also point out certain issues that should be considered before the deployment of a blockchain network in an IoT setting: from transactional privacy to the expected value of the digitized assets traded on the network. Wherever applicable, we identify solutions and workarounds. Our conclusion is that the blockchain-IoT combination is powerful and can cause significant transformations across several industries, paving the way for new business models and novel, distributed applications.

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Citations
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Journal ArticleDOI

Quantum resistant key-exposure free chameleon hash and applications in redactable blockchain

TL;DR: This paper proposes two single-trapdoor key-exposure free chameleon hash functions based on lattice, without/with lattice trapdoors respectively, and shows their applications in redactable blockchain, and introduces two mechanisms to prevent the misuse of redaction functionality in blockchain.
Book ChapterDOI

Edge Computing Integrated with Blockchain Technologies

TL;DR: This paper presents a comprehensive overview of edge computing integrated with blockchain technologies, which lies in its ability to transfer the sensitive data from cloud to the edge for increasing network security and to realize high frequency interaction and real-time transmission of data.
Journal ArticleDOI

Blockchain-Based Secure Data Storage Protocol for Sensors in the Industrial Internet of Things

TL;DR: Wang et al. as mentioned in this paper proposed a group signature scheme, which has less computation overhead and communication overhead, is designed to realize anonymous authentication first, and then, a novel blockchain-based cloud storage protocol for sensors in IIoT is constructed on basis of the proposed group signature.
Journal ArticleDOI

Permissioned blockchains and distributed databases: A performance study

TL;DR: Comparing two popular frameworks, Hyperledger Fabric and Apache Cassandra, as representatives of permissioned blockchains and distributed databases, respectively shows that, for small systems, blockchains can start to compete with traditional databases, but also that the difference in consistency models and differences in setup can have a large impact on the resulting performance.
Posted Content

Securing the Internet of Things: New Perspectives and Research Challenges.

TL;DR: A taxonomy and survey the state of the art in IoT security research are provided, and a roadmap of concrete research challenges to address existing and next-generation IoT security threats are offered.
References
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Journal ArticleDOI

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Book ChapterDOI

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Book ChapterDOI

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Proceedings ArticleDOI

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Proceedings Article

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