Computer Science ›› 2022, Vol. 49 ›› Issue (9): 312-317.doi: 10.11896/jsjkx.210800102

• Information Security • Previous Articles     Next Articles

Research and Implementation of Parallel Method in Blockchain and Smart Contract

WANG Zi-kai, ZHU Jian, ZHANG Bo-jun, HU Kai   

  1. School of Computer Science and Engineering,Beihang University,Beijing 100191,China
    Yunnan Key Laboratory of Blockchain Application Technology,Kunming 650233,China
  • Received:2021-08-12 Revised:2022-04-07 Online:2022-09-15 Published:2022-09-09
  • About author:WANG Zi-kai,born in 1996,postgra-duate.His main research interests include blockchain and distributed system.
    HU Kai,born in 1963,professor.His main research interests include distri-buted system,blockchain and formal verification.
  • Supported by:
    National Key Research and Development of China(2018YFB1402702) and Science and Technology Major Project of Yunnan Province(202002AB080001-8,202002AA100007).

Abstract: With the continuous maturity of blockchain technology,there are more and more blockchain applications for enterprises that can provide a safe,anonymous and non-tamperable transaction environment.Traditional blockchain architecture is faced with problems such as low performance and insufficient scalability.It can neither meet the needs of high concurrency nor the big data application scenarios for enterprise-level applications.In order to better adapt to the more abundant application scenarios and give full paly to the value of blockchain technology,this paper proposes a simple practical byzantine fault tolerance(SBFT)consensus algorithm to improve the efficiency of the consensus phase,and a Task parallel smart contract model is proposed to make full use of the parallelism efficiency of multi-core systems.we have improved the traditional blockchain system architecture to have the characteristics of light weight,low coupling,and smart contract scalability,which facilitates the secondary development of enterprise applications.On this basis,the ParaChain blockchain and smart contract system are developed.Experimental results show that the performance and scalability of the ParaChain blockchain based on parallelization technology is greatly improved compared to the blockchain system based on the traditional PBFT consensus protocol.

Key words: Blockchain technology, Smart contract, ParaChain blockchain, SBFT consensus protocol, Task parallel smart contract model

CLC Number: 

  • TP311
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