Abstract

Introduction

Literature Review

Conclusion

References

Abstract

     Blockchain is the trending topic now-a-days due to its decentralized and security feature. Internet usage on the other hand is increasing rapidly along with the increase in threats and attacks. The Internet of Things, or IoT, is the arrangement of billions of physical devices around the world that are connected to the internet for the purpose of collecting and sharing data, worldwide. IoT appliances and devices are the boom in the technology but the biggest concern in IoT devices is its security. A lot of attacks are discussed on IoT. Existing technologies are not enough to secure the IoT devices completely. BIoT or Blockchain IoT is the mechanism of using security feature of Blockchain in IoT to make it more secure and vulnerable to communication attacks. In this paper we have discussed the basics of Blockchain, IoT and How various work have been varied out on BIoT.

Introduction

     Blockchain is a distributed ledger that contains data in an interconnected form of chains that are secured. Or one can easily understand it as a database that stores some kind of information in the interconnected blocks. Whenever any new data arrives then it is to be inserted into a new block. Once the block is ready with data it is to be inserted and interconnected with the previous existing blocks in that Blockchain in chronological order, by the help of hash techniques. The following figure shows the network of Blockchain.

     In Blockchain we can store different types of information or data that may be inter-related or totally different from each other. It is the emerging technique with wide variety of applications. Blockchain is gaining popularity because of its decentralized and secure nature. It uses Hashing technique to store hash of previous data is stored and a secure chain is formed that’s hard to manipulate. People are investing in Bitcoins and accepting the concept of Blockchain.

Conclusion

     Clearly it’s seen and observed that we are using BIoT in various applications and in coming years it will be scaled more in other application areas also. IoT is an emerging technique but in it security and privacy is not maintained. Blockchain is also a current emerging technique that is famous for its secure and decentralized nature. Together Blockchain IoT (BIoT) is used to make smart appliance more secure and private. In this paper we have reviewed the existing work and techniques in contribution to making IoT more secure in various applications like agriculture, automobile and healthcare etc.