Blockchain-Based Internet of Things and Industrial IoT: A Comprehensive Survey

Table 5

Comparison table based on different parameters of the existing big data, cloud computing, and network security management technique.

S. no.	Reference	Year	Technology used	Summary of the work	Shortcoming of the work	Possible solution	Implementation remarks
1.	[73]	2017	(a) Smart contract, (b) cloud storage	Framework for reliable data integrity verification for both the data owners and the data consumers, without relying on any third-party auditor (TPA)	(a) Did not fully implement proposed protocols, (b) test environment is small	Implement all the protocols and test on a larger environment	Implementation of all proposed protocols has not been done
2.	[74]	2018	(a) Smart contract, (b) edge computing	Compared to centralized CAC, their scheme achieves the fine-grained access control and decentralized authorization	Storage-capacity constraint may be one of the problems in the proposed scheme	Fully distributed storage scheme is one of the possible solutions	Decentralized capability-based access control
3.	[75]	2018	(a) Smart contract, (b) IoT	Studied the use of smart contracts for addressing transparency, longevity, and trust by designing and evaluating framework for an automated gasoline-purchasing application	(a) Low transaction throughput, (b) percentile transaction latency of the order of hours, (c) limited applications	Use different consensus mechanism to reduce transaction time	High delay in transactions
4.	[76]	2019	(a) Smart contract, (b) Ethereum, (c) homomorphic hash functions	Fair nonrepudiation service provisioning scheme using blockchain as service publisher and evidence recorder to prevent service providers and clients from dishonestly denying service or usage	IoT devices are not directly connected to blockchain network; instead they communicate through an arbitration node	IPFS mechanism can be used for storing the IIoT data	Dispute resolution in case of storing massive amounts of data on servers has not been considered
5.	[77]	2019	(a) Smart contract, (b) distributed hash table	Address security, trust, and island connection problems in decentralized manufacturing applications using on-chain and off-chain networks	Not fully decentralized	Use fully decentralized architecture instead of selecting only a few nodes to maintain blockchain activities	On-chain network used for transaction, off-chain networks used for other tasks