Abstract
present, we are in the world of digital revolution. Use of smartphones and internet accelerated due to the impact of the novel Covid-19 virus. The whole world started to turn digital. The industrialization of Internet of Things (IoT) enables more devices to connect and communicate which leads to many data transfer transactions. The architecture of IoT is centralized. The distributed and decentralized architecture of Blockchain can be used to provide secure and scalable transactions of IoT devices. Blockchain is a distributed ledger technology, which provides secure data transactions that cannot be tampered and altered. In this paper, we provide advantages and challenges of integrating IoT and Blockchain. We also provide different architectures and algorithms proposed by researchers to provide secure data transactions. We shall also shed light on the future research directions of integrating Blockchain and IoT.
Highlights
Internet of Things (IoT) is a recent dominant research area, which leads the world to the digital revolution by providing many applications such as smart home, smart city, smart healthcare, smart agriculture, smart transportation and logistics and many more
The major challenges of IoT arise due to the centralized architecture of IoT such as scalability and security can be resolved using the decentralized architecture of Blockchain
The distributed ledger concept of Blockchain eliminates the issues of single point failure, provides tamper-proof transactions, and efficient data security
Summary
IoT is a recent dominant research area, which leads the world to the digital revolution by providing many applications such as smart home, smart city, smart healthcare, smart agriculture, smart transportation and logistics and many more. IoT is a network that connects people and devices (2). 3.1 Structure of Blockchain A block chain is a tamper-evident, shared digital ledger that records transactions in a public or private peer-to-peer network (4). Block chain technology works in a sequential chain of blocks where each block has a list of transactions. Structure of blocks consists of a header and a body section. Smart contract functionality where an action is triggered automatically when certain criteria in the contract are satisfied This reduces time and cost of transaction. Auditability: As the transactions of blockchain recorded permanently, it makes audit trials available for an asset. Makes it easy to authenticate the asset. Transparency: Blockchain provides transparency regarding the transactions, which reduces work delays and enhances the efficiency of transactions
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