Blockchain for IoT Access Control, Security and Privacy: A Review
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Blockchain for IoT Access Control, Security and Privacy: A Review Pradnya Patil1 · M. Sangeetha1 · Vidhyacharan Bhaskar2 Accepted: 29 October 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract In modern era, blockchain technology is gaining a major attention among researchers and scientists for different scopes such as access control, data security, privacy and decentralization of the wireless networks. Though blockchain offers several benefits like peer to peer technology, anonymity, increased capacity, better security; the main cause behind being the first choice is its immutable structure. To abolish the role of the reliable third-party within interconnected networks, blockchain can be used as a key technology because of its distributed nature. Hyperledger fabric, IBM Blockchain, Ethereum, Ripple, R3 Corda, multichain are the most prominent blockchain platforms available for implementation. Aforementioned review paper describes and analyzes the existing blockchain based security techniques pertaining to IoT access control, vehicular ad hoc networks, healthcare, and supply chain. The comprehensive survey of use cases of blockchain will serve as a state-of-the-art for the researchers to carry out cutting edge research work in the pursuance of blockchain technology in various fields. Keywords Access control · Blockchain · Consortium block chain · Data security · Internet of things (IoT) · Privacy
1 Introduction Among all technologies available for data security and privacy, blockchain is the most efficient one because of its properties like immutability and irreversibility. The blockchain is defiant to modification of data [1]. Whenever there is a change in the ledger using * Vidhyacharan Bhaskar [email protected] Pradnya Patil [email protected] M. Sangeetha [email protected] 1
Department of Electronics and Communication Engineering, SRM Institute of Science and Technology, Kattankulathur, Kancheepuram Dt., Tamilnadu 603203, India
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Department of Electrical and Computer Engineering, San Francisco State University, 1600 Holloway Avenue, San Francisco, CA 94132, USA
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transactions, changes are distributed to all the nodes to verify and update their particular transcript of the ledger. Once the transaction is verified from all the nodes in the network, it is not possible to change the transaction without altering the later and previous blocks. So, blockchain transactions are irreversible and their data is constantly appended. Each block is connected with a link also known as a chain. Subsequent block incorporates hash of the preceding block to visit the chain in the reverse chronological order. Blockchain uses both decentralized and distributed structure along with cryptographic properties, which makes it work in a unique way. Blockchain technology is preferable where security and confidentiality of the information is the first priority of the network. In IoT, access control can be achieved more efficiently by implementing block
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