Approaches towards Blockchain Innovation: A Survey and Future Directions

Electronics

Divya Guru¹  Supraja Perumal¹  Vijayakumar Varadarajan² 

[1] Department of Information Technology, SRM Institute of Science and Technology, Kattakulathur 603203, India;School of Computer Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia;

关键词: blockchain;    consensus algorithm;    smart contract;    attacks;    smart cities;    security and privacy;   

DOI  :  10.3390/electronics10101219

来源: DOAJ

【 摘 要 】

A blockchain is a decentralized peer to peer platform which provides security services based on some key concepts, namely authentication, confidentiality, integrity and authorization. It is the process of recording and keeping track of the resources without the intervention of a centralized authority. This paper provides an overview of blockchains, the structure of blockchains, consensus algorithms, etc., It compares the algorithms based on their utility and limitations. Though blockchains provide secure communication, there are some minimal data leaks which are discussed. Various security issues in blockchains are discussed such as denial of service attacks, etc., In addition to security, some other blockchain challenges are presented like scalability, reliability, interoperability, privacy and consensus mechanisms for integration with AI, IoT and edge computing. This paper also explains about the importance of blockchains in the fields of smart healthcare, smart grid, and smart financial systems. Overall, this paper gives the glimpse of various protocols, algorithms, applications, challenges and opportunities that are found in the blockchain domain.

【 授权许可】

Unknown