检索结果-内蒙古大学图书馆

Cell Based raft algorithm for Optimized Consensus Process on Blockchain in Smart Data Market

IEEE ACCESS 2022年 10卷 85199-85212页

作者： Yang, Dana Doh, Inshil Chae, Kijoon Ewha Womans Univ Dept Comp Sci & Engn Seoul 03760 South Korea Ewha Womans Univ Dept Cyber Secur Seoul 03760 South Korea

Due to the explosive increase in IoT devices and traffic, big data is developing into smart data that helps the data science experts understand human activities, through the relationship between mobility and resource application of the users in public spaces. For example, smart data markets help to predict crimes or understand the cause of COVID-19 infections. For these smart services, the users agree to the privacy policy so that the personal and sensitive information can be collected by a third party. But the conditions of the privacy policy do not specify whether the information of the users can be tracked. To ensure data transparency, many systems are applying consortium/private blockchains with raft algorithm. The raft algorithm requires nodes to check countless messages for a single transaction. Eventually, as the number of nodes increases, the overall system degradation is derived from the burden of the leader node. This paper proposes a method to process the collected transactions by dividing a certain amount of transactions into cells, without any extra protocol. The proposed scheme also uses the federated learning model with high accuracy and data privacy, in order to determine the optimized cell size in a blockchain system that should lead to consensus on multiple servers. Therefore, the proposed CBR (Cell-based raft) consensus algorithm proposes a protocol that reduces the number of messages, without interfering with the concept of the existing raft algorithm, in order to maintain stable throughput in the smart data market where massive transactions occur.

关键词： Blockchains Servers Consensus algorithm Collaborative work Internet of Things Throughput Smart devices Data science Smart service blockchain consensus algorithm raft algorithm federated learning

来源：评论

学校读者我要写书评

暂无评论

A Study on the Election of Suitable Leader Vehicle in Vehicle Platooning Using the raft algorithm A Study on the Election of Suitable Leader Vehicle in Vehicle Platooning Using the raft algorithm 11

A Study on the Election of Suitable Leader Vehicle in Vehicl...

引用

11th International Conference on Ubiquitous and Future Networks (ICUFN)

作者： Back, Jaehee Choi, Sumin Shin, Yongtae Soongsil Univ Dept Software Convergence Seoul South Korea Soongsil Univ Dept Comp Seoul South Korea

ISBN: (纸本)9781728113395

Existing vehicle platooning creates platooning of vehicles with the same destination, and the leader vehicle manages the platooning. Since there is no way to elect a leader vehicle for platooning management, and the leader vehicle has not changed since its initial election, it is difficult to cope with the traffic situation in real time. To complement this, it is proposed that the raft algorithm is applied to automatically elect the appropriate leader vehicle. To verify this, the proposed platooning was analyzed by comparing them according to the platooning scenarios to confirm that flexible platooning is possible.

关键词： Platooning Leader Election raft algorithm V2X(Vehicle to Everything) IoT(Internet of Things)

来源：评论

学校读者我要写书评

暂无评论

A Byzantine Fault-Tolerant raft algorithm Combined with Schnorr Signature 15

A Byzantine Fault-Tolerant Raft Algorithm Combined with Schn...

引用

15th International Conference on Ubiquitous Information Management and Communication (IMCOM)

作者： Tia, Sihan Liu, Yun Zhang, Yansong Zhao, Yingsi Beijing Jiaotong Univ Sch Elect & Informat Engn Beijing Peoples R China Beijing Municipal Commiss Educ Key Lab Commun & Informat Syst Beijing Peoples R China Beijing Jiaotong Univ Sch Econ & Management Beijing Peoples R China

ISBN: (纸本)9781665423182

To optimize the Byzantine fault tolerance of raft algorithm, a Byzantine fault-tolerant B-raft algorithm combined with Schnorr signature mechanism is proposed. First, during leader election, followers are required to sign the ballot to prevent the Byzantine node from forging the vote. Second, the client is required to sign the message when sending the message to leader to prevent the Byzantine leader from tampering with the logs. B-raft combines the signature mechanism with the raft algorithm and several modifications and additions provide Byzantine fault tolerance. The results of the experiments launched in Hyperledger Fabric show that compared with the raft algorithm, the safety of B-raft is greatly improved.

关键词： blockchain raft algorithm Schnorr signature Byzantine fault tolerance

来源：评论

学校读者我要写书评

暂无评论

Multi-strategy-based leader election mechanism for the raft algorithm

引用

CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE 2023年第22期35卷 e7734-e7734页

作者： Du, Zhiqiang Qu, Zhi Fu, Yanfang Huang, Muhong Liu, Liangxin Xian Technol Univ Sch Comp Sci & Engn Xian 710021 Peoples R China

raft is a consensus algorithm that implements highly available replicas. As raft requires a leader to drive the protocol execution, it usually employs a round-robin leader election mechanism to select a random leader among all nodes. However, when the elected leader suffers from performance issues, the protocol will temporarily lose aliveness. To address this issue, we propose a multi-strategy leader election mechanism that allows nodes to proactively trigger a new round of election when they believe the leader suffers from performance issues, and replace this leader with a new one in a designated priority queue. The formal analysis and experimental results show that the mechanism can improve the system's throughput/latency without additional election time overhead.

关键词： consensus algorithm leader election raft algorithm server priority

来源：评论

学校读者我要写书评

暂无评论

RR-raft: A raft Consensus algorithm Based on Reputation Regression Model and RSA Signature 2

RR-Raft: A Raft Consensus Algorithm Based on Reputation Regr...

引用

2nd International Conference on Mobile Internet, Cloud Computing and Information Security (MICCIS)

作者： Li, Shuang Deng, Xiaohong Zou, Yijie Jiangxi Univ Sci & Technol Sch Informat Engn Ganzhou Peoples R China Gannan Univ Sci & Technol Sch Informat Engn Ganzhou Peoples R China

ISBN: (纸本)9798350389913;9798350389906

To address the issue that existing raft consensus algorithms in blockchain cannot achieve low latency, high security, and high efficiency simultaneously, a raft consensus algorithm based on reputation regression and RSA signatures, named RR-raft, is designed. The algorithm first introduces a reputation measurement function and a reputation consumption function into the Logistic regression algorithm, constructing a reputation model based on R-Logistic regression. This model solves the centralized reputation problem in traditional regression algorithms, thereby enhancing the enthusiasm of nodes for consensus. Secondly, to address the issue of vote splitting during the leader election phase of the consensus mechanism, a quick leader node election strategy based on the reputation model is proposed to improve consensus efficiency. Lastly, to prevent the Leader node from tampering with the logs as a malicious actor, a fast RSA aggregate signature based on Barrett reduction is proposed to enhance the security of consensus.

关键词： Blockchain Consensus Mechanism raft algorithm RSA Signature Regression algorithm

来源：评论

学校读者我要写书评

暂无评论

RaBFT: an improved Byzantine fault tolerance consensus algorithm based on raft

引用

JOURNAL OF SUPERCOMPUTING 2024年第14期80卷 21533-21560页

作者： Bai, Fenhua Li, Fushuang Shen, Tao Zeng, Kai Zhang, Xiaohui Zhang, Chi Kunming Univ Sci & Technol Fac Informat Engn & Automat Kunming 650500 Yunnan Peoples R China

To address the limitations of the raft consensus algorithm, such as the lack of support for Byzantine fault tolerance, performance bottleneck of the leader single node, and high leader election delay, an improved Byzantine fault tolerance consensus algorithm called RaBFT based on raft is proposed. The distribution process of log messages is optimized by utilizing the secret sharing technique to make it Byzantine fault tolerance, and the role of the committee is introduced to share the communication pressure of the leader, thereby resolving the performance bottleneck issue of the leader single node. The leader election algorithm based on a dynamic committee improves the speed of leader election and reduces the time required for leader election. The experimental results show that RaBFT algorithm has a significant improvement in throughput and consensus delay in the log replication phase, and has a lower leader election delay, RaBFT algorithm can improve the efficiency and performance of the system, it is a safe and efficient consensus algorithm.

关键词： Consensus algorithm raft algorithm Byzantine fault tolerance Verifiable secret sharing

来源：评论

学校读者我要写书评

暂无评论

Pirogue, a lighter dynamic version of the raft distributed consensus algorithm 34

Pirogue, a lighter dynamic version of the Raft distributed c...

引用

34th IEEE International Performance, Computing, and Communications Conference (lPCCC)

作者： Paris, Jehan-Franois Long, Darrell D. E. Univ Houston Dept Comp Sci Houston TX 77204 USA Univ Calif Santa Cruz Dept Comp Sci Santa Cruz CA 95064 USA

ISBN: (纸本)9781467385909

raft is a new distributed consensus algorithm that is easier to understand than the older Paxos algorithm. raft's major drawback is its high energy footprint: as it relies on static quorums for deciding when it can commit updates, it requires five participants to protect against two simultaneous failures. We propose to reduce this footprint by replacing the static quorums that raft currently uses by quorums that vary according to the number of currently available participants. We present first a modified dynamic-linear voting protocol that disables single server updates and show that a raft cluster with four participants managed by this protocol would be almost as available as a conventional raft cluster with five participants and always tolerate the irrecoverable failure of any single participant without any data loss. In addition, we show a raft cluster with three participants and a witness managed by an unmodified dynamic-linear voting protocol would be more available than a conventional raft cluster with five participants and could still tolerate most irrecoverable failures of any single participant while maintaining recoverability.

关键词： Distributed computing Fault-tolerant computing Green computing Distributed consensus raft algorithm

来源：评论

学校读者我要写书评

暂无评论

When raft Meets SDN: How to Elect a Leader and Reach Consensus in an Unruly Network 1

When Raft Meets SDN: How to Elect a Leader and Reach Consens...

引用

1st Asia-Pacific Workshop on Networking (APNET)

作者： Zhang, Yang Ramadan, Eman Mekky, Hesham Zhang, Zhi-Li Univ Minnesota Minneapolis MN 55455 USA

ISBN: (纸本)9781450352444

In SDN, the logically centralized control plane ("network OS") is often realized via multiple SDN controllers for scalability and reliability. ONOS is such an example, where it employs raft - a new consensus protocol developed recently - for state replication and consistency among the distributed SDN controllers. The reliance of network OS on consensus protocols to maintain consistent network state introduces an intricate inter-dependency between the network OS and the network under its control, thereby creating new kinds of fault scenarios or instabilities. In this paper, we use raft to illustrate the problems that this inter-dependency may introduce in the design of distributed SDN controllers and discuss possible solutions to circumvent these issues.

关键词： Consensus raft algorithm SDN Resilient Routing

来源：评论

学校读者我要写书评

暂无评论

Educert-chain: a secure and notarized educational certificate authentication and verification system using permissioned blockchain

引用

CLUSTER COMPUTING-THE JOURNAL OF NETWORKS SOFTWARE TOOLS AND APPLICATIONS 2024年第7期27卷 10169-10196页

作者： Rani, Prity Sachan, Rohit Kumar Kukreja, Sonal Bennett Univ SCSET Greater Noida 201310 Uttar Pradesh India

Blockchain technology has gained significant attention and widespread adoption due to several key factors, such as immutability, higher security, decentralization, transparency, smart contracts and automation, efficiency and cost savings, and the potential for innovation in numerous industries, including finance, healthcare, supply chain, real estate, education sector, and many more. Nowadays, the forgery of educational certificates is a concerning issue that poses significant challenges to academic institutions, employers, and individuals seeking authentic qualifications. Here, we propose a secure and notarized educational certificate authentication and verification framework named EduCert-Chain using Hyperledger Fabric to overcome concerns. EduCert-Chain uses ECDSA (Elliptic Curve Digital Signature algorithm) for digital signature and verification, the SHA-256 algorithm for cryptographic hashing, and the raft consensus mechanism for validating network transactions. We have used the Hyperledger Caliper tool to conduct an extensive set of experiments to evaluate the performance of the proposed framework in terms of throughput and latency. We have considered two HEIs (Higher Education Institutions) organizations for the experimental evaluations, and the transaction ranges between 50-500. We have used CouchDB as a state database and the Docker container to handle highly portable workloads. Our framework achieves an average throughput for the query function, which is 34.95 TPS, and for the open function, it is 32.23 TPS. Additionally, it achieves an average latency of 4.21 s for the query function and 2.05 s for the open function. We also have conducted a comparative analysis to assess security features and limitations between the proposed framework and related work. Our observation reveals that the proposed EduCert-Chain framework has better features. This initiative will positively contribute towards addressing the issues of fraudulent credentials and forgery.

关键词： Blockchain Educational Certificates Elliptic Curve algorithm Hyperledger Fabric raft algorithm Smart Contract Validation Verification

来源：评论

学校读者我要写书评

暂无评论

Blockchain for Health IoT: A privacy-preserving data sharing system

引用

SOFTWARE-PRACTICE & EXPERIENCE 2022年第9期52卷 2026-2044页

作者： Chen, Songling Fu, Xiangling Si, Hongchao Wang, Yi Gao, Songfeng Wang, Chunyuan Beijing Univ Posts & Telecommun Sch Comp Sci Natl Pilot Software Engn Sch Beijing 100876 Peoples R China Beijing Univ Posts & Telecommun Key Lab Trustworthy Distributed Corn Puting & Ser Minist Educ Beijing Peoples R China Huarong Rongtong Beijing Technol Co Ltd Beijing Peoples R China

Health Internet of Things (Health IoT) has been limited by isolated information and a lack of security. As the combination of blockchain and Health IoT could potentially address these two limitations, it has attracted significant interest. However, blockchain-based systems often fail to balance data sharing and privacy protection. Therefore, we proposed a Health IoT-based privacy-preserving data sharing blockchain system. We designed a privacy-preserving method based on the content extraction signature scheme to enable patients to establish fine-grained privacy protection. We designed a Byzantine fault-tolerant leader election mechanism that enhances the security of the raft algorithm while providing efficiency in the data sharing. Furthermore, we designed a summary contract to ensure efficient data retrieval. The proposed mechanism was evaluated in terms of the efficiency and security. The simulation and analysis results demonstrate that our scheme offers a secure and effective technique for achieving privacy-preserving and efficient sharing of IoT medical data.

关键词： blockchain data sharing healthcare Internet of Things (IoT) privacy-preserving raft algorithm

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：