Research on sybil attack in defense blockchain based on improved PBFT algorithm
Aiming at the problem that sybil attack has great harm to block chain technology,a method to improve the PBFT algorithm in the alliance chain to defend against sybil attacks was proposed.Firstly,using the idea of consensus algorithm based on proof of rights and interests,a reputation model was estab...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2020-09-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2020170/ |
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| _version_ | 1850121436112355328 |
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| author | Yingxu LAI Zunxu BO Jing LIU |
| author_facet | Yingxu LAI Zunxu BO Jing LIU |
| author_sort | Yingxu LAI |
| collection | DOAJ |
| description | Aiming at the problem that sybil attack has great harm to block chain technology,a method to improve the PBFT algorithm in the alliance chain to defend against sybil attacks was proposed.Firstly,using the idea of consensus algorithm based on proof of rights and interests,a reputation model was established,the reputation value of each node accorded to the behavior of each node in the consensus process was calculated,and different discourse rights accorded to the size of the reputation value was given.Then pre-commit phase was added to the PBFT algorithm to reduce the number of communication between nodes.The solution through formal analysis and reasoning and security testing shows that the improved PBFT algorithm can not only effectively defend against sybil attacks in the blockchain,but also make the performance of the blockchain system in terms of TPS and block generation delay. |
| format | Article |
| id | doaj-art-c72d7f165ee5454985e62ae6c7349577 |
| institution | OA Journals |
| issn | 1000-436X |
| language | zho |
| publishDate | 2020-09-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-c72d7f165ee5454985e62ae6c73495772025-08-20T02:35:05ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2020-09-014110411759737279Research on sybil attack in defense blockchain based on improved PBFT algorithmYingxu LAIZunxu BOJing LIUAiming at the problem that sybil attack has great harm to block chain technology,a method to improve the PBFT algorithm in the alliance chain to defend against sybil attacks was proposed.Firstly,using the idea of consensus algorithm based on proof of rights and interests,a reputation model was established,the reputation value of each node accorded to the behavior of each node in the consensus process was calculated,and different discourse rights accorded to the size of the reputation value was given.Then pre-commit phase was added to the PBFT algorithm to reduce the number of communication between nodes.The solution through formal analysis and reasoning and security testing shows that the improved PBFT algorithm can not only effectively defend against sybil attacks in the blockchain,but also make the performance of the blockchain system in terms of TPS and block generation delay.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2020170/blockchainSybil attackPBFT algorithmreputation modeldiscourse right |
| spellingShingle | Yingxu LAI Zunxu BO Jing LIU Research on sybil attack in defense blockchain based on improved PBFT algorithm Tongxin xuebao blockchain Sybil attack PBFT algorithm reputation model discourse right |
| title | Research on sybil attack in defense blockchain based on improved PBFT algorithm |
| title_full | Research on sybil attack in defense blockchain based on improved PBFT algorithm |
| title_fullStr | Research on sybil attack in defense blockchain based on improved PBFT algorithm |
| title_full_unstemmed | Research on sybil attack in defense blockchain based on improved PBFT algorithm |
| title_short | Research on sybil attack in defense blockchain based on improved PBFT algorithm |
| title_sort | research on sybil attack in defense blockchain based on improved pbft algorithm |
| topic | blockchain Sybil attack PBFT algorithm reputation model discourse right |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2020170/ |
| work_keys_str_mv | AT yingxulai researchonsybilattackindefenseblockchainbasedonimprovedpbftalgorithm AT zunxubo researchonsybilattackindefenseblockchainbasedonimprovedpbftalgorithm AT jingliu researchonsybilattackindefenseblockchainbasedonimprovedpbftalgorithm |