2020 IEEE International Conference on Blockchain (Blockchain)最新文献_第7页

A Blockchain Solution for Enhancing Cybersecurity Defence of IoT 增强物联网网络安全防御的区块链解决方案

2020 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2020-11-01 DOI: 10.1109/Blockchain50366.2020.00071

K. M. Giannoutakis, G. Spathoulas, C. Filelis-Papadopoulos, A. Collen, M. Anagnostopoulos, K. Votis, N. A. Nijdam

{"title":"A Blockchain Solution for Enhancing Cybersecurity Defence of IoT","authors":"K. M. Giannoutakis, G. Spathoulas, C. Filelis-Papadopoulos, A. Collen, M. Anagnostopoulos, K. Votis, N. A. Nijdam","doi":"10.1109/Blockchain50366.2020.00071","DOIUrl":"https://doi.org/10.1109/Blockchain50366.2020.00071","url":null,"abstract":"The growth of IoT devices during the last decade has led to the development of smart ecosystems, such as smart homes, prone to cyberattacks. Traditional security methodologies support to some extend the requirement for preserving privacy and security of such deployments, but their centralized nature in conjunction with low computational capabilities of smart home gateways make such approaches not efficient. Last achievements on blockchain technologies allowed the use of such decentralized architectures to support cybersecurity defence mechanisms. In this work, a blockchain framework is presented to support the cybersecurity mechanisms of smart homes installations, focusing on the immutability of users and devices that constitute such environments. The proposed methodology provides also the appropriate smart contracts support for ensuring the integrity of the smart home gateway and IoT devices, as well as the dynamic and immutable management of blocked malicious IPs. The framework has been deployed on a real smart home environment demonstrating its applicability and efficiency.","PeriodicalId":109440,"journal":{"name":"2020 IEEE International Conference on Blockchain (Blockchain)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126348160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20

Improving Bitcoin Transaction Propagation by Leveraging Unreachable Nodes 利用不可达节点改善比特币交易传播

2020 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2020-10-28 DOI: 10.1109/Blockchain50366.2020.00031

Federico Franzoni, Vanesa Daza

引用次数: 5

Multi-factor authentication for users of non-internet based applications of blockchain-based platforms 基于区块链平台的非互联网应用用户的多因素认证

2020 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2020-10-15 DOI: 10.1109/Blockchain50366.2020.00076

Andrew Kinai, Frederlck Otieno, Nelson Bore, Komminist Weldemariam

引用次数: 4

CoVer: Collaborative Light-Node-Only Verification and Data Availability for Blockchains 内容:区块链的协作光节点验证和数据可用性

2020 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2020-10-01 DOI: 10.1109/Blockchain50366.2020.00014

Steven Cao, S. Kadhe, K. Ramchandran

引用次数: 15

Reliable, Fair and Decentralized Marketplace for Content Sharing Using Blockchain 使用区块链进行内容共享的可靠、公平和分散的市场

2020 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2020-09-23 DOI: 10.1109/Blockchain50366.2020.00053

Prabal Banerjee, Chander Govindarajan, P. Jayachandran, S. Ruj

{"title":"Reliable, Fair and Decentralized Marketplace for Content Sharing Using Blockchain","authors":"Prabal Banerjee, Chander Govindarajan, P. Jayachandran, S. Ruj","doi":"10.1109/Blockchain50366.2020.00053","DOIUrl":"https://doi.org/10.1109/Blockchain50366.2020.00053","url":null,"abstract":"Content sharing platforms such as Youtube and Vimeo have promoted pay per view models for artists to monetize their content. Yet, artists remain at the mercy of centralized platforms that control content listing and advertisement, with little transparency and fairness in terms of number of views or revenue. On the other hand, consumers are distanced from the publishers and cannot authenticate originality of the content. In this paper, we develop a reliable and fair platform for content sharing without a central facilitator. The platform is built as a decentralized data storage layer to store and share content in a fault-tolerant manner, where the peers also participate in a blockchain network. The blockchain is used to manage content listings and as an auditable and fair marketplace transaction processor that automatically pays out the content creators and the storage facilitators using smart contracts. We demonstrate the system with the blockchain layer built on Hyperledger Fabric and the data layer built on Tahoe-LAFS, and show that our design is practical and scalable with low overheads.","PeriodicalId":109440,"journal":{"name":"2020 IEEE International Conference on Blockchain (Blockchain)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125376900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Cost Fairness for Blockchain-Based Two-Party Exchange Protocols 基于区块链的双方交换协议的成本公平性

2020 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2020-09-12 DOI: 10.1109/Blockchain50366.2020.00062

Matthias Lohr, Benjamin Schlosser, Steffen Staab

引用次数: 3

Model Checking Bitcoin and other Proof-of-Work Consensus Protocols 模型检查比特币和其他工作量证明共识协议

2020 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2020-07-16 DOI: 10.1109/Blockchain50366.2020.00051

Max DiGiacomo-Castillo, Yiyun Liang, Advay Pal, John C. Mitchell

引用次数: 4

Decentralized Lightweight Detection of Eclipse Attacks on Bitcoin Clients 去中心化轻量级检测对比特币客户端的Eclipse攻击

2020 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2020-07-05 DOI: 10.1109/Blockchain50366.2020.00049

Bithin Alangot, Daniël Reijsbergen, Sarad Venugopalan, Pawel Szalachowski

{"title":"Decentralized Lightweight Detection of Eclipse Attacks on Bitcoin Clients","authors":"Bithin Alangot, Daniël Reijsbergen, Sarad Venugopalan, Pawel Szalachowski","doi":"10.1109/Blockchain50366.2020.00049","DOIUrl":"https://doi.org/10.1109/Blockchain50366.2020.00049","url":null,"abstract":"Clients of permissionless blockchain systems, like Bitcoin, rely on an underlying peer-to-peer network to send and receive transactions. It is critical that a client is connected to at least one honest peer, as otherwise the client can be convinced to accept a maliciously forked view of the blockchain. In such an eclipse attack, the client is unable to reliably distinguish the canonical view of the blockchain from the view provided by the attacker. The consequences of this can be catastrophic if the client makes business decisions based on a distorted view of the blockchain transactions.In this paper, we investigate the design space and propose two approaches for Bitcoin clients to detect whether an eclipse attack against them is ongoing. Each approach chooses a different trade-off between average attack detection time and network load. The first scheme is based on the detection of suspicious block timestamps. The second scheme allows blockchain clients to utilize their natural connections to the Internet (i.e., standard web activity) to gossip about their blockchain views with other clients through contacted servers. Our proposals improve upon previously proposed eclipse attack countermeasures without introducing any dedicated infrastructure or changes to the Bitcoin protocol and network. We demonstrate the effectiveness of the gossip-based schemes through real-world implementation. The results of our experiments indicate that the protocol incurs a negligible overhead, detects eclipse attacks rapidly with high probability, and is well-suited for practical deployment. 1.","PeriodicalId":109440,"journal":{"name":"2020 IEEE International Conference on Blockchain (Blockchain)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121909473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

RA: Hunting for Re-Entrancy Attacks in Ethereum Smart Contracts via Static Analysis RA:通过静态分析寻找以太坊智能合约中的重入攻击

2020 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2020-07-02 DOI: 10.1109/Blockchain50366.2020.00048

Yuichiro Chinen, Naoto Yanai, Jason Paul Cruz, Shingo Okamura

{"title":"RA: Hunting for Re-Entrancy Attacks in Ethereum Smart Contracts via Static Analysis","authors":"Yuichiro Chinen, Naoto Yanai, Jason Paul Cruz, Shingo Okamura","doi":"10.1109/Blockchain50366.2020.00048","DOIUrl":"https://doi.org/10.1109/Blockchain50366.2020.00048","url":null,"abstract":"Ethereum smart contracts are programs that are deployed and executed in a consensus-based blockchain managed by a peer-to-peer network. Several re-entrancy attacks that aim to steal Ether, the cryptocurrency used in Ethereum, stored in deployed smart contracts were found in the recent years. A countermeasure to such attacks is based on dynamic analysis that executes the smart contracts themselves, but it requires the spending of Ether and knowledge of attack patterns for analysis in advance. In this paper, we present a static analysis tool named RA (Re-entrancy Analyzer), a combination of symbolic execution and equivalence checking by a satisfiability modulo theories solver to analyze smart contract vulnerabilities against re-entrancy attacks. In contrast to existing tools, RA supports analysis of inter-contract behaviors by using only the Ethereum Virtual Machine bytecodes of target smart contracts, i.e., even without prior knowledge of attack patterns and without spending Ether. Furthermore, RA can verify existence of vulnerabilities against re-entrancy attacks without execution of smart contracts and it does not provide false positives and false negatives. We also present an implementation of RA to evaluate its performance in analyzing the vulnerability of deployed smart contracts against re-entrancy attacks and show that RA can precisely determine which smart contracts are vulnerable.","PeriodicalId":109440,"journal":{"name":"2020 IEEE International Conference on Blockchain (Blockchain)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123607218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 25

CoinWatch: A Clone-Based Approach For Detecting Vulnerabilities in Cryptocurrencies CoinWatch:一种基于克隆的加密货币漏洞检测方法

2020 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2020-06-18 DOI: 10.1109/Blockchain50366.2020.00011

Qingze Hum, Wei Jin Tan, Shi Ying Tey, Latasha Lenus, I. Homoliak, Yun Lin, Jun Sun

{"title":"CoinWatch: A Clone-Based Approach For Detecting Vulnerabilities in Cryptocurrencies","authors":"Qingze Hum, Wei Jin Tan, Shi Ying Tey, Latasha Lenus, I. Homoliak, Yun Lin, Jun Sun","doi":"10.1109/Blockchain50366.2020.00011","DOIUrl":"https://doi.org/10.1109/Blockchain50366.2020.00011","url":null,"abstract":"Cryptocurrencies have become very popular in recent years. Thousands of new cryptocurrencies have emerged, proposing new and novel techniques that improve on Bitcoin’s core innovation of the blockchain data structure and consensus mechanism. However, cryptocurrencies are a major target for cyber-attacks, as they can be sold on exchanges anonymously and most cryptocurrencies have their codebases publicly available. One particular issue is the prevalence of code clones in cryptocurrencies, which may amplify security threats. If a vulnerability is found in one cryptocurrency, it might be propagated into other cloned cryptocurrencies. In this work, we propose a systematic remedy to this problem, called COINWATCH $left( {mathcal{C}mathcal{W}} right)$. Given a reported vulnerability at the input, $mathcal{C}mathcal{W}$ uses the code evolution analysis and a clone detection technique for the indication of cryptocurrencies that might be vulnerable. We applied $mathcal{C}mathcal{W}$ on 1094 cryptocurrencies using 4 CVEs and obtained 786 true vulnerabilities present in 384 projects, which were confirmed with developers and successfully reported as CVE extensions.","PeriodicalId":109440,"journal":{"name":"2020 IEEE International Conference on Blockchain (Blockchain)","volume":"79 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131771899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7