Abstract
Internet of Things (IoT)-based devices, especially those used for home automation, consist of their own sensors and generate many logs during a process. Enterprises producing IoT devices convert these log data into more useful data through secondary processing; thus, they require data from the device users. Recently, a platform for data sharing has been developed because the demand for IoT data increases. Several IoT data marketplaces are based on peer-to-peer (P2P) networks, and in this type of marketplace, it is difficult for an enterprise to trust a data owner or the data they want to trade. Therefore, in this study, we propose a review system that can confirm the reputation of a data owner or the data traded in the P2P data marketplace. The traditional server-client review systems have many drawbacks, such as security vulnerability or server administrator’s malicious behavior. However, the review system developed in this study is based on Ethereum smart contracts; thus, this system is running on the P2P network and is more flexible for the network problem. Moreover, the integrity and immutability of the registered reviews are assured because of the blockchain public ledger. In addition, a certain amount of gas is essential for all functions to be processed by Ethereum transactions. Accordingly, we tested and analyzed the performance of our proposed model in terms of gas required.
Highlights
Nowadays, the term “ubiquitous computing” is widely known, which refers to a computing environment that a user can access through any device with no restrictions in terms of time and place [1]
A smart home refers to an Internet of Things (IoT) environment in which devices inside the house can communicate with the residents’ smartphones to transmit status information or control devices
The investment potential and development potential are so great that many IoT device companies invest much money in technology and product development for a more innovative smart home
Summary
The term “ubiquitous computing” is widely known, which refers to a computing environment that a user can access through any device with no restrictions in terms of time and place [1]. Most smart home device companies are interested in this large amount of data This is because it is possible to observe user behavior patterns or detect errors in a system through a large amount of log data analysis stored in such devices. Based on these data, a better IoT solution can be developed or updated and presented to the user. The main users of the smart contract review system are IoT device manufacturers, who can register and check reviews for the data that they wish to purchase by visiting a web page.
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