ABSTRACT
The Internet of Things (IoT) is the next paradigm in the communication information age. Through using IoT, smart devices can be activated to automatically build, collect, and share the data. Existing and potential IoT technologies bring additional consumers’ degree of comfort, productivity, and functionality. So, for this, it needs high data protection, anonymity, and restoration from breaches to be able to incorporate such an environment. Blockchain, a distributed ledger technology, capable of maintaining data privacy in a decentralized system, is widely implemented in various fields especially in the field of IoT. Blockchain has recently been gaining recognition because of its conjunction with the Internet of Things (IoT) technology. Therefore, in this paper, we analyzed the various security threats in IoT architecture and its possible Blockchain solution is presented. The core functionality of our system is to monitor the real-time values of Humidity 78and temperature of remote locations through Internet after securing it using blockchain-based technology. The live values of Humidity, the temperature can be seen through the channels of ThingSpeak Cloud. We can easily get any malicious activity in the infrastructure as with the help of Blockchain, a Secured Hash Algorithm can be applied on each block, and changing something inside a block will change its hash value. So, our paper aims at Secured data transmission by storing sensor data in the blockchain and transmitting the blocks onto the cloud. At last, we examine the challenges and future scope for research in the protection safeguarding of blockchain-based IoT frameworks.
