Computer Science

Computer Science ›› 2021, Vol. 48 ›› Issue (2): 295-302.doi: 10.11896/jsjkx.191200159

• Information Security • Previous Articles     Next Articles

Intelligent Manufacturing Security Model Based on Improved Blockchain

WANG Wei-hong, CHEN Zhen-yu   

  1. College of Computer Science and Technology,Zhejiang University of Technology,Hangzhou 310023,China
  • Received:2019-12-26 Revised:2020-03-24 Online:2021-02-15 Published:2021-02-04
  • About author:WANG Wei-hong,born in 1969,postgraduate,professor,master's supervisor.His main research interests include cloud computing,big data analytics,and information security.
  • Supported by:
    The National Natural Science Foundation of China(61340058) and Key Natural Science Foundation of Zhejiang pvo-vince,China(LZ14F020001).

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Abstract: In view of the traditional block chain intelligent manufacturing security model's slow speed of block construction and data query,and high time complexity of inserting query operation,an intelligent manufacturing security model based on improved block chain is proposed.Firstly,the disadvantages of traditional block chain are solved,such as large power consumption and low throughput.A new Merkle Patricia tree (MPT) is introduced to expand the block chain structure to provide fast query of node state.Aiming at the problem that MPT does not support concurrent operation and poor performance under high load state,Merkle is designed as a lockless concurrent cache Patricia tree,which supports concurrent data operation without lock,and can improve the efficiency in multi-core system.Finally,the performance of the proposed model is analyzed by specific simulation experiments.The results show that the improved intelligent manufacturing security model of block chain can effectively reduce the time complexity of insertion query operation,greatly improve the speed of block construction and data query,and compared with the traditional model,it can get better overall performance.

Key words: Blockchain, Concurrent data structures, Industrial Internet of Things, Merkle Patricia tree, Smart manufacturing

CLC Number: 

  • TP309
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