Hai Mo, Zhu Jianming. A Propagation Mechanism Combining an Optimal Propagation Path and Incentive in Blockchain Networks[J]. Journal of Computer Research and Development, 2019, 56(6): 1205-1218. DOI: 10.7544/issn1000-1239.2019.20180419
Citation:
Hai Mo, Zhu Jianming. A Propagation Mechanism Combining an Optimal Propagation Path and Incentive in Blockchain Networks[J]. Journal of Computer Research and Development, 2019, 56(6): 1205-1218. DOI: 10.7544/issn1000-1239.2019.20180419
Hai Mo, Zhu Jianming. A Propagation Mechanism Combining an Optimal Propagation Path and Incentive in Blockchain Networks[J]. Journal of Computer Research and Development, 2019, 56(6): 1205-1218. DOI: 10.7544/issn1000-1239.2019.20180419
Citation:
Hai Mo, Zhu Jianming. A Propagation Mechanism Combining an Optimal Propagation Path and Incentive in Blockchain Networks[J]. Journal of Computer Research and Development, 2019, 56(6): 1205-1218. DOI: 10.7544/issn1000-1239.2019.20180419
(School of Information, Central University of Finance and Economics, Beijing 100081)
Funds: This work was supported by the National Key Research and Development Program of China (2017YFB1400700) and the Key Program of the National Natural Science Foundation of China (U201509214).
For the blockchain fork in blockchain networks can cause the attacker to perform double-spending attack very easily, how to reduce the fork probability is a very important and challenging research issue. Aiming at three problems of current research on optimizing the propagation mechanism of transactions and blocks in blockchain networks to reduce the fork probability: only the propagation delay between adjacent nodes or the total number of routing hops of the propagation process is reduced; the propagation process generates a large number of communication messages; it is based on the assumption that nodes on the propagation path will continue to propagate transactions and blocks, and a propagation mechanism combining an optimal propagation path and incentive (OPPI) in blockchain networks, is proposed to decrease both the total propagation delay and the number of communication messages, which achieves a tradeoff between the propagation efficiency and the propagation cost. Simulation results show that: compared with the existing propagation mechanism of blockchain networks based on Gossip, when the network topology is random graph, scale-free graph, small-world network graph, the number of nodes is 10, 100, 1 000, 10 000 and the degree k is set to 2, 4, 8 respectively, OPPI reduces both the total propagation delay and the number of communication messages generated by the propagation process significantly, specifically, by 99.4% to 99.98% in the total propagation delay and by 99% to 99.1% in the number of communication messages.