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检索条件"主题词=Consensus Algorithm"

共 2600 条记录，以下是121-130 订阅

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GS-PBFT: A Practical Byzantine consensus algorithm Based on Scoring Mechanism and Stake Mechanism 13

GS-PBFT: A Practical Byzantine Consensus Algorithm Based on ...

引用

13th International Conference of Information and Communication Technology, ICTech 2024

作者： Yu, JinGang Xue, HaoJie University of Chinese Academy of Sciences Shenyang Institute of Computer Technology Chinese Academy of Sciences Shenyang China

ISBN: (纸本)9798350376258

Practical Byzantine Fault Tolerance algorithm (PBFT) can improve efficiency on the basis of the original algorithm, but there are still some issues such as high algorithm complexity, arbitrary decision of primary nodes, and poor scalability. In order to solve these issues, this paper proposes an optimized algorithm GS-PBFT based on the scoring mechanism and the stake mechanism. GS-PBFT first groups the nodes, and the primary nodes in the group also need to participate in the consensus outside the group. Secondly, a scoring mechanism is proposed to score nodes based on whether they can correctly finish the consensus and the efficiency of taking part in consensus. Malicious nodes can be identified and eliminated, and nodes that are unable to participate in consensus due to downtime can be quickly restored. Finally, a stake mechanism is proposed to improve the active nodes' weight, thereby accelerating overall efficiency. Simulation experiments show that compared with the original algorithm, the GS-PBFT algorithm proposed in this paper has greatly improved efficiency, tolerance of malicious nodes, and throughput indicators. ©2024 IEEE.

关键词： consensus algorithm

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ISRaft consensus algorithm for Autonomous Units 29

ISRaft Consensus Algorithm for Autonomous Units

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29th IEEE International Conference on Network Protocols (ICNP)

作者： Zamir, Linir Shaan, Aman Nojoumian, Mehrdad Florida Atlantic Univ Dept Elect Engn & Comp Sci Boca Raton FL 33431 USA

ISBN: (纸本)9781665441315

consensus protocols are a key feature in decentralized systems where multiple unreliable nodes operate, e.g., in Blockchain technologies with many worldwide applications such as supply chain management, cryptocurrencies and information sharing. ISRaft is a consensus protocol built upon Raft, a previously developed protocol that is used for replicated state machines when a group of nodes is required to achieve a consensus related to the state of the machine. This paper therefore proposes an alternative version of the ISRaft consensus protocol to allow communication among nodes in a secured fashion while maintaining the security features of the original ISRaft algorithm even in the presence of adversarial nodes. The proposed model utilizes a trust parameter to enforce cooperation, i.e., a trust value is assigned to each node to prevent malicious activities over time. This is a practical solution for autonomous units with resource-constrained devices where a regular encrypted communication method can negatively affect the system performance.

关键词： consensus algorithm Autonomous System Blockchain Technology Trust Model Raft

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User Control in Proximity Marketing: A Basic consensus algorithm

User Control in Proximity Marketing: A Basic Consensus Algor...

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IEEE Conference on Global Communications (IEEE GLOBECOM) - Intelligent Communications for Shared Prosperity

作者： Chahal, Fatima Fouchal, Hacene Gaiti, Dominique Univ Technol Troyes LIST3N Troyes France Univ Reims CReSTIC Reims France

ISBN: (纸本)9798350310900

A marketing strategy, which is a comprehensive plan, describes an organization's approach to promoting and selling its products and services, including target audience identification, brand message, and promotional techniques. Proximity marketing is a type of marketing strategy that uses wireless technologies to target customers based on their geographic location or proximity to a specific store or location. Businesses regularly use it to get customers to their physical locations, increase sales, and raise awareness of their brands. Using wireless technologies like Bluetooth and Wi-Fi, targeted messages are sent to customers' mobile devices when they are near a physical store in a sort of location-based marketing. Concerns around data security and privacy are one of the potential issues with proximity marketing. Customers can feel that their data is not under their control or that it is being collected and used without their consent. Businesses can take steps to address these worries, such as providing customers with the choice to opt-in or opt-out of receiving marketing messages and being explicit and honest about data collection and use. Even when customers explicitly accept the gathering and usage of their data, they may nevertheless feel uneasy about it. So we suggest a Control algorithm (CA) inspired by the concept of the consensus algorithm in the blockchain, which would give people control over their data rather than businesses, in order to solve these concerns. And this can support the development of customer and business confidence.

关键词： Wireless Networks Proximity marketing Opt-in/Opt-out consensus algorithm

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An Improved Delegated Proof of Stake consensus algorithm 9

An Improved Delegated Proof of Stake Consensus Algorithm

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International Conference on Identification, Information and Knowledge in the Internet of Things (IIKI)

作者： Hu, Qian Yan, Biwei Han, Yubing Yu, Jiguo Qilu Univ Technol Sch Comp Sci & Technol Shandong Acad Sci Jinan 250353 Peoples R China Qufu Normal Univ Sch Math Sci Qufu 273165 Shandong Peoples R China Natl Supercomp Ctr Jinan Shangdong Comp Sci Ctr Jinan 250014 Peoples R China Shandong Lab Comp Networks Jinan 250014 Peoples R China

Aiming at the problems of the existing DPoS(Delegated Proof of Stake) consensus algorithm, such as low enthusiasm of voting nodes and difficulties in dealing with malicious nodes, we improve the traditional DPoS consensus algorithm and propose a reputation-based delegated proof of stake consensus algorithm, called Reputation-DPoS. In our Reputation-DPoS, the reputation model is introduced. By evaluating the behavior of nodes, nodes are divided into different trusted states, and high-quality nodes in the network are selected as consensus nodes to reduce security risks and improve efficiency. Besides, incentive methods of reputation and token are used to improve the enthusiasm of nodes to participate in voting. Simulation results show that our Reputation-DPoS can reduce the probability of malicious nodes being selected and optimize the state of nodes in DPoS. Nodes with good behavior will get more votes and rewards, which will motivate nodes and improve the security of the system. Insert here your abstract text. (C) 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://***/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the International Conference on Identification, Information and Knowledge in the internet of Things, 2020.

关键词： Blockchain consensus algorithm DPoS Reputation Model

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MPC-DPOS: An efficient consensus algorithm based on secure multi-party computation 2

MPC-DPOS: An efficient consensus algorithm based on secure m...

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2nd International Conference on Blockchain Technology and Applications (ICBTA)

作者： Luo, Yinghui Deng, Xiaoshi Wu, Yilin Wang, Junhuan Guangdong Univ Educ Guangzhou Guangdong Peoples R China Guangzhou Strong Trchnologyco LTD Guangzhou Guangdong Peoples R China

ISBN: (纸本)9781450377430

The blockchain is a decentralized distributed accounting system. With the development of the blockchain technology and its wide application, the core of the decentralization-consensus algorithm has attracted the attention of researchers. However, the previous POW mining consensus algorithm is a low-efficiency and high-cost consensus mechanism. In this paper, we propose an MPC-DPOS election consensus algorithm, which is improved by integrating the logic ring-based election algorithm and the Yao's millionaire algorithm into the basic DPOS algorithm to address secure multi-party computation problem. Specifically, the MPC-DPOS algorithm first selects the 101 candidate nodes from the many nodes of the blockchain system into a logical ring in the first stage, which will participate in the next election process of the proxy nodes to generate new blocks. In addition, since the weights are compared while the shares are not known, Yao's millionaire algorithm is added in the second election process, and the agent nodes are selected to generate new blocks finally. Extensive experiments show that the proposed MPC-DPOS election consensus algorithm achieves state-of-the-art performance with the respect to safety and adaptability to meet the high efficiency and low-cost requirements of commercial applications.

关键词： Blockchain Decentralization consensus algorithm Secure Multi-Party Computation

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Tree-Chain: A Fast Lightweight consensus algorithm for IoT Applications 45

Tree-Chain: A Fast Lightweight Consensus Algorithm for IoT A...

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45th Annual IEEE Conference on Local Computer Networks (LCN)

作者： Dorri, Ali Jurdak, Raja Queensland Univ Technol QUT Sch Comp Sci Brisbane Qld Australia

ISBN: (纸本)9781728171586

Blockchain has received tremendous attention in non-monetary applications including the Internet of Things (IoT) due to its salient features including decentralization, security, auditability, and anonymity. Most conventional blockchains rely on computationally expensive validator selection and consensus algorithms, have limited throughput, and high transaction delays. In this paper, we propose tree-chain a scalable fast blockchain instantiation that introduces two levels of randomization among the validators: i) transaction level where the validator of each transaction is selected randomly based on the most significant characters of the hash function output (known as consensus code), and ii) blockchain level where validator is randomly allocated to a particular consensus code based on the hash of their public key. Tree-chain introduces parallel chain branches where each validator commits the corresponding transactions in a unique ledger.

关键词： Blockchain Internet of Things (IoT) consensus algorithm

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A study on an energy-effective and secure consensus algorithm for private blockchain systems (PoM: Proof of Majority) 9

A study on an energy-effective and secure consensus algorith...

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9th International Conference on Information and Communication Technology Convergence (ICTC)

作者： Kim, Jun-Tae Jin, Jungha Kim, Keecheon Konkuk Univ Dept Comp Sci & Engn Seoul South Korea

ISBN: (纸本)9781538650417

We present an energy-efficient, security-enhanced consensus algorithm to compensate for the security weaknesses that may arise when a node that generates a block is vulnerable in a closed blockchain environment. consensus algorithms, which are usually used in blockchain environments, use a large amount of hash to create a new block, producing significant energy waste. The consensus algorithm that is proposed in this paper reduces energy waste by generating new blocks in a single operation according to the defined rules of all miner nodes that can generate blocks and converging them into blocks with many identical block values, forming a blockchain.

关键词： blockchain consensus algorithm PoM: Proof of Majority reducing energy private (closed) blockchain system

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Re-Raft: An Improved Blockchain consensus algorithm with Enhanced Byzantine Resistance and Crash Tolerance 2

Re-Raft: An Improved Blockchain Consensus Algorithm with Enh...

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2nd International Conference on Computer Vision and Intelligent Technology

作者： Wang, Zhuang Xu, Cheng Dai, Songyin Li, Xuewei Beijing Union Univ Beijing Key Lab Informat Serv Engn Beijing 100101 Peoples R China Beijing Union Univ Sch Artificial Intelligence Sch Robot Beijing 100101 Peoples R China

ISBN: (纸本)9798331540050;9798331540043

The traditional Raft consensus algorithm is widely used in private chains due to its crash-tolerant feature, but it cannot solve many problems caused by the malicious behaviour of Byzantine nodes. Based on an in-depth analysis of existing research results, this paper proposes a consensus algorithm based on the Raft algorithm with enhanced Byzantine resistance and crash tolerance: Re-Raft (Reliability-Raft), in order to solve the core problems of Byzantine nodes identity forgery and illegal replacement of leaders. A fault heartbeat logging mechanism is introduced to prevent Byzantine nodes from obtaining the majority of votes by broadcasting fault heartbeat logs;and a node reliability assessment algorithm is proposed to accurately assess the reliability of nodes by combining the continuity penalty weights and the time decay factor to reduce communication redundancy triggered by frequent node failures. The experimental results show that compared with the native Raft, the Re-Raft algorithm achieves a significant improvement in Byzantine fault-tolerance capability.

关键词： blockchain raft Byzantium consensus algorithm

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ConSenseIoT: A consensus algorithm for Secure and Scalable Blockchain in the IoT context 22

ConSenseIoT: A Consensus Algorithm for Secure and Scalable B...

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17th International Conference on Availability, Reliability and Security (ARES)

作者： Niavis, Harris Loupos, Konstantinos Inlecom Innovat Athens Greece

ISBN: (纸本)9781450396707

Data protection and privacy is a major concern in the Internet of Things (IoT) ecosystem, and the excessive use of IoT devices may risk the security of the network. Blockchain solutions are used to enhance the trustworthiness and eliminate the need for trusted third parties by providing mechanisms to reach consensus in a network of trustless participants. The consensus algorithms employed by blockchain architectures ensure the integrity of the data stored in the blockchain, the resiliency of the network and manage the security of devices. However, current solutions are compute intensive affecting the performance of the network and consuming much energy. In this work, we introduce a consensus algorithm for offering secure distributed consensus among IoT devices without affecting the performance of the network. The algorithm is inspired by existing solutions, employs decentralised identities, verifiable credentials and a decentralised trust management mechanism to guarantee security, privacy and trustworthiness of transactions. Finally, our algorithm combines technologies for operating in a distributed manner which favors the scalability and allow the effective integration in large scale networks.

关键词： Blockchain IoT consensus algorithm trust

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Evaluation of continuous consensus algorithm in border surveillance missions 8

Evaluation of continuous consensus algorithm in border surve...

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8th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)

作者： Dragana, Cristian Stamatescu, Grigore Dobrin, Andrei Popescu, Dan Univ Politehn Bucuresti Dept Automat Control & Ind Informat Bucharest Romania

ISBN: (纸本)9781509020478

Large scale wireless sensor networks require intelligent and reliable distributed information processing mechanisms which can effectively delegate decision at the field level consensus algorithms have been extensively studied and deployed in many generic multi agent systems framework and are able to provide localized agreement among sensing entities. The paper discusses the evaluation of a local consensus algorithm for a border surveillance system, focused on detection of military terrain vehicles, starting from a system architecture for large scale monitoring systems previously proposed Simulation scenario of a ground local WSN was developed using real data as reference for initial states of the sensor nodes. Performance indicators such as speed of convergence and accuracy of consensus were discussed.

关键词： wireless sensor networks consensus algorithm convergence border surveillance area monitoring

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