Computer Science ›› 2021, Vol. 48 ›› Issue (2): 271-281.doi: 10.11896/jsjkx.200800021

Special Issue: Information Security

• Information Security • Previous Articles     Next Articles

Summary of Principle and Application of Blockchain

GUO Shang-tong, WANG Rui-jin, ZHANG Feng-li   

  1. School of Information and Software Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China
  • Received:2020-08-03 Revised:2020-12-01 Online:2021-02-15 Published:2021-02-04
  • About author:GUO Shang-tong,born in 1995,postgraduate,is a member of China Computer Federation.His main research interests include blockchain and privacy protection.
    WANG Rui-jin,born in 1980,associate professor,is a member of China Computer Federation.His main research interests include information security,privacy protection and blockchain.
  • Supported by:
    The National Natural Science Foundation of China(61802033,61472064,61602096),Sichuan Regional Innovation Cooperation Project(2020YFQ0018),Sichuan Science and Technology Program (2020YFG0475,2018GZ0087,2019YJ0543),Chinese Postdoctoral Science Foundation(2018M643453),Guangdong Provincial Key Laboratory Project(2017B030314131) and Network and Data Security Key Laboratory of Sichuan Province Open Issue(NDSMS201606).

Abstract: In recent years,as digital cryptocurrency has gradually come into people's sight,its underlying technology blockchain has also attracted people's attention.As a distributed ledger technology,blockchain is characterized by multi-party maintenance,non-tampering,openness and transparency.In this paper,the structure of block chain is divided according to the hierarchy,and the functions and principles of each layer are introduced from low to high.Block chain is divided into public chain,alliance chain and private chain according to the degree of openness.The working principle of public chain and alliance chain is illustrated by taking Bitcoin and Hyperledger Fabric as examples.And this paper gives a detailed introduction to the underlying core technology consensus algorithm,smart contract and privacy security of blockchain,and analyzes the research progress and research prospect of blockchain in the end.

Key words: Blockchain, Consensus algorithms, Digital cryptocurrency, Privacy protect, Smart contract

CLC Number: 

  • TP311.13
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