Survey on Consensus Algorithms in Blockchain for Secure Data Sharing

Blockchain technology is one of the latest innovations that provides a secured decentralized, distributed database of records of all transaction and digital events. In recent years, blockchain technology is being applied in many powerful applications such as financial services, smart contracts, healthcare, supply chain management, e-voting etc. As blockchain ensures high security, it is being trusted and accepted by many business organizations. Consensus algorithms are the primary component of blockchain technology that maintains integrity and security in blockchain. This paper reviews consensus algorithms in blockchain technology that were applied in the recent research works for providing data sharing security. The importance of consensus algorithms in blockchain, their advantages and disadvantages are discussed in this paper.