Computer Science

Computer Science ›› 2022, Vol. 49 ›› Issue (6A): 723-728.doi: 10.11896/jsjkx.210800018

• Interdiscipline & Application • Previous Articles     Next Articles

Application Research of PBFT Optimization Algorithm for Food Traceability Scenarios

LI Bo, XIANG Hai-yun, ZHANG Yu-xiang, LIAO Hao-de   

  1. School of Computer Science,Southwest Petroleum University,Chengdu 610500,China
  • Online:2022-06-10 Published:2022-06-08
  • About author:LI Bo,born in 1996,postgraduate.His main research interests include blockchain technology and consensus algorithm.
    XIANG Hai-yun,born in 1982,postgraduate.His main research interests include information management technology and blockchain technology.
  • Supported by:
    Ministry of Education Industry-University Cooperation Collaborative Education Project(201801209004).

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Abstract: The characteristics of blockchain such as immutability and traceability can better support the food traceability system,and there are problems such as long delay,many nodes and high system overhead in the application of food traceability combined with blockchain technology.To address the above problems,an optimized PBFT algorithm trace-PBFT(t-PBFT) is proposed for the food traceability scenario based on the practical Byzantine fault tolerance(PBFT) algorithm.Firstly,the nodes in the supply chain are divided into three classes,and the node status is dynamically updated according to the actual communication volume of the nodes in the consensus,which is used to evaluate the reliability of the nodes as the basis for electing the master node.Secon-dly,the consistency protocol in the original algorithm is optimized to reduce the number of node communications by combining the characteristics of the food supply chain.Experimental results show that the t-PBFT algorithm performs better than the PBFT algorithm in terms of communication overhead,request delay and throughput.Finally,based on the t-PBFT algorithm and combined with the consortium chain,an architectural model to meet the demand of food traceability is proposed.It can record the data of each link in the food supply chain,ensure data traceability and the safety of food circulation process.

Key words: Blockchain application, Consensus algorithm, Consortium chain, Food traceability, Practical Byzantine fault tolerance

CLC Number: 

  • TP312
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