2021 IEEE International Conference on Blockchain (Blockchain)最新文献_第3页

DAGSec: A hybrid distributed ledger architecture for the secure management of the Internet of Things DAGSec:用于物联网安全管理的混合分布式账本架构

2021 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2021-12-01 DOI: 10.1109/Blockchain53845.2021.00043

I. D. Alvarenga, G. Camilo, Lucas Airam C. de Souza, O. Duarte

{"title":"DAGSec: A hybrid distributed ledger architecture for the secure management of the Internet of Things","authors":"I. D. Alvarenga, G. Camilo, Lucas Airam C. de Souza, O. Duarte","doi":"10.1109/Blockchain53845.2021.00043","DOIUrl":"https://doi.org/10.1109/Blockchain53845.2021.00043","url":null,"abstract":"The rise of 5G mobile broadband networks creates new possibilities for the Internet of Things. Billions of devices will provide comprehensive services, including e-health applications, smart grids, and industry 4.0. Distributed ledger technologies solve most security and privacy threats of current IoT systems connected to a cloud or multi-access edge communication (MEC). Unfortunately, the volume of transactions imposed by 5G networks prevents blockchain-based solutions due to scalability issues. Nonetheless, emerging solutions based on directed acyclic graphs (DAG), still require some form of centralization or global view. This article proposes DAGSec, a hybrid distributed ledger architecture that provides a secure Internet of Things environment with high throughput and low latency. Our proposal uses directed acyclic graphs and local transaction validation instead of global transaction validation to attain a high transaction rate. Furthermore, we propose a blockchain-based witness system to approximate chronological order of independent transactions.","PeriodicalId":372721,"journal":{"name":"2021 IEEE International Conference on Blockchain (Blockchain)","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127379901","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

Joint Crypto-Blockchain Scheme for Trust-Enabled CCTV Videos Sharing 基于信任的CCTV视频共享联合加密-区块链方案

2021 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2021-12-01 DOI: 10.1109/Blockchain53845.2021.00054

Mehwish Tahir, M. Asghar, N. Kanwal, Brian A. Lee, Yuansong Qiao

{"title":"Joint Crypto-Blockchain Scheme for Trust-Enabled CCTV Videos Sharing","authors":"Mehwish Tahir, M. Asghar, N. Kanwal, Brian A. Lee, Yuansong Qiao","doi":"10.1109/Blockchain53845.2021.00054","DOIUrl":"https://doi.org/10.1109/Blockchain53845.2021.00054","url":null,"abstract":"The declaration of COVID-19 as pandemic affected almost all public and private functionaries by enforcing them to operate remotely, and the judiciary is no exception. The trend seems to continue for the foreseeable future. The judicial proceedings where a piece of evidence, particularly the digital one, holds undisputed importance. Its preservation and intact transmission to the jury have gained an enhanced significance in this era which is highly susceptible to manipulation. This research proposes joint encryption and blockchain-based solution for immutable decentralised evidence management for CCTV footage. The permissioned chain of evidence system is implemented using Hyperledger Fabric to ensure the validity of the video metadata. The hash values are calculated on videos (recorded per session) and stored in the blockchain, while Region of Interest (ROI) based selective encryption of videos adds optimized security to individuals' privacy and protects from illegal access of stored videos. The experimental results provide a proof of concept that the proposed scheme facilitates the remote court services by maintaining a legal chain of evidence for CCTV videos.","PeriodicalId":372721,"journal":{"name":"2021 IEEE International Conference on Blockchain (Blockchain)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130512614","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: 1

Securely Boosting Chain Growth and Confirmation Speed in PoW Blockchains 安全地提高PoW区块链的链增长和确认速度

2021 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2021-12-01 DOI: 10.1109/Blockchain53845.2021.00028

Ovia Seshadri, V. Ribeiro, Aditya Kumar

{"title":"Securely Boosting Chain Growth and Confirmation Speed in PoW Blockchains","authors":"Ovia Seshadri, V. Ribeiro, Aditya Kumar","doi":"10.1109/Blockchain53845.2021.00028","DOIUrl":"https://doi.org/10.1109/Blockchain53845.2021.00028","url":null,"abstract":"Proof-of-Work (PoW) blockchains add blocks, and consequently the chain weight, randomly. The blocks added also have a significant network delay owing to their large size. Large delay combined with randomness causes forks that are responsible for many security problems. One can reduce fork occurrences by designing a system with large block intervals and size but this design compromises performance aspects such as confirmation time guarantees. The trade-off between security and performance in PoW blockchain is a well discussed topic in the literature. In this paper, we aim to reduce the conflict between security and performance through our novel concept of Links. Links are small, fast and frequent structures that can be incorporated on any new or existing PoW blockchains. Links help reduce the confirmation time of its underlying blockchain while preserving its consistency security guarantees. Our novel lower-bound growth rate for PoW systems with links in the presence of a general adversary in a partially synchronous network, shows that links provide a more steady chain growth rate than classic PoW systems without links. On a well-established, secure system like Bitcoin, we use the derived growth rate to show that when links are incorporated to Bitcoin, they help reduce its confirmation time from 60 minutes by half to 30 minutes, while retaining the consistency threshold guarantees of the original Bitcoin system. We provide a proof of concept emulation of links in a Bitcoin test bed consisting of 210 nodes having real world latencies between them. We benchmark a system with links against Bitcoin to show links cause negligible network overheads and no compromises on security in terms of orphaned weight due to forks. Our theoretical analyses and experiments can easily be extended to other Nakamoto style PoW systems.","PeriodicalId":372721,"journal":{"name":"2021 IEEE International Conference on Blockchain (Blockchain)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126292131","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: 0

The Future of Cryptocurrency Blockchains in the Quantum Era 量子时代加密货币区块链的未来

2021 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2021-12-01 DOI: 10.1109/Blockchain53845.2021.00082

Sarah Alghamdi, Sultan Almuhammadi

引用次数: 2

TRABAC: A Tokenized Role-Attribute Based Access Control using Smart Contract for Supply Chain Applications TRABAC:基于令牌化角色属性的供应链智能合约访问控制

2021 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2021-12-01 DOI: 10.1109/Blockchain53845.2021.00088

Aisyah Ismail, Qian Wu, Mark Toohey, Young Choon Lee, Zhongli Dong, Albert Y. Zomaya

{"title":"TRABAC: A Tokenized Role-Attribute Based Access Control using Smart Contract for Supply Chain Applications","authors":"Aisyah Ismail, Qian Wu, Mark Toohey, Young Choon Lee, Zhongli Dong, Albert Y. Zomaya","doi":"10.1109/Blockchain53845.2021.00088","DOIUrl":"https://doi.org/10.1109/Blockchain53845.2021.00088","url":null,"abstract":"The use of smart contracts for access control has shown to be promising as it ensures integrity and governs access to stored data, thanks to blockchain's immutability. While several recent studies have shown such usage, their applicability to supply chain applications remains limited due to less governance control capability and implementation complexity with smart contracts. This paper proposes the use of a tokenized role-attribute based access control (TRABAC) as a two-level access control for supply chain applications. In particular, TRABAC combines the simplicity of Role-Based Access Control (RBAC) and the flexibility and fine-grained capacity of Attribute-Based Access Control (ABAC). We consider these methods coupled with the use of Non-Fungible Token (NFT) as virtual assets in the supply chain. We also define four roles or parties that can have distinct and varied access rights. These roles are incorporated into TRABAC. The efficacy of TRABAC has been evaluated in five access control scenarios. Our experimental results show that TRABAC is capable of delegating access to four different supply chain roles. Importantly, TRABAC can effectively prevent unauthorized access requests by accounts that lack a valid Level 1 role or accounts that lack a valid token attribute or a tag in Level 2 of TRABAC.","PeriodicalId":372721,"journal":{"name":"2021 IEEE International Conference on Blockchain (Blockchain)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116540545","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: 5

Regulatory Opportunities and Challenges for Blockchain Adoption for Circular Economies 循环经济采用区块链的监管机遇和挑战

2021 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2021-12-01 DOI: 10.1109/Blockchain53845.2021.00086

Katrien Steenmans, P. Taylor, I. Steenmans

引用次数: 2

BATS: A Blockchain-based Authentication and Trust Management System in Vehicular Networks 基于区块链的车辆网络认证和信任管理系统

2021 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2021-12-01 DOI: 10.1109/Blockchain53845.2021.00053

Mehrdad Salimitari, M. Joneidi, Y. P. Fallah

{"title":"BATS: A Blockchain-based Authentication and Trust Management System in Vehicular Networks","authors":"Mehrdad Salimitari, M. Joneidi, Y. P. Fallah","doi":"10.1109/Blockchain53845.2021.00053","DOIUrl":"https://doi.org/10.1109/Blockchain53845.2021.00053","url":null,"abstract":"As the backbone of the connected and autonomous vehicles (CAVs), vehicular ad-hoc networks (VANETs) enable a variety of applications for sharing traffic information and road safety messages. However, the possibility of malicious activity in such an untrusted environment necessitates evaluating the credibility of sent messages by vehicles. In this article, we put forward a blockchain-based authentication and trust management system for vehicular networks. This architecture incorporates multiple local blockchains for enabling distributed V2X communication and a global trust score blockchain for evaluating the credibility of sent messages from vehicles as illustrated in the teaser figure. To empower our proposed architecture, we propose a novel Dual Consensus Method (DCM) consisted of local consensus for event blockchains and global consensus for the trust score blockchain. DCM enables real-time and concurrent operation of different blockchains in our architecture. We employ Proof of Elapsed Time (PoET) consensus method for the global consensus. For the local consensus, we propose a new consensus method named Restricted Practical Byzantine Fault Tolerance (RPBFT). Through our design, a vehicle's information for decision-making about an event is not limited to the neighboring vehicles and RSUs. It has access to both recent data regarding an event and vehicles' trust scores in a fully decentralized and private fashion. Performance evaluation of our proposed method reveals its capability to calculate and store trust sores via secure, decentralized, and real-time operation.","PeriodicalId":372721,"journal":{"name":"2021 IEEE International Conference on Blockchain (Blockchain)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116715238","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: 4

Analysis of Attack Activities for Honeypots Installation in Ethereum Network 以太坊网络蜜罐安装攻击行为分析

2021 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2021-12-01 DOI: 10.1109/Blockchain53845.2021.00068

Kota Chin, Kazumasa Omote

引用次数: 2

FairTrade: Efficient Atomic Exchange-based Fair Exchange Protocol for Digital Data Trading 公平贸易:有效的基于原子交换的数字数据交易公平交换协议

2021 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2021-12-01 DOI: 10.1109/Blockchain53845.2021.00017

Changhao Chenli, Wenyi Tang, Taeho Jung

引用次数: 3

BlockIoT-RETEL: Blockchain and IoT Based Read-Execute-Transact-Erase-Loop Environment for Integrating Personal Health Data blockkit - retel:基于区块链和物联网的读取-执行-交易-擦除-循环环境，用于整合个人健康数据

2021 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2021-12-01 DOI: 10.1109/Blockchain53845.2021.00039

Manan Shukla, Jianjing Lin, O. Seneviratne

{"title":"BlockIoT-RETEL: Blockchain and IoT Based Read-Execute-Transact-Erase-Loop Environment for Integrating Personal Health Data","authors":"Manan Shukla, Jianjing Lin, O. Seneviratne","doi":"10.1109/Blockchain53845.2021.00039","DOIUrl":"https://doi.org/10.1109/Blockchain53845.2021.00039","url":null,"abstract":"The development and adoption of Electronic Health Records and health monitoring Internet of Things (IoT) devices have enabled the digitization of patient records. They have also substantially transformed the healthcare delivery system in remote patient monitoring, healthcare decision-making, and medical research. However, data tends to be fragmented among health information systems, preventing interoperability of medical data at the point of care. In order to address this gap, we propose and implement a novel architecture that utilizes blockchain and IoT technologies for integrating personal health data. The architecture comprises of two components: (1) BlockIoT contains a suite of smart contracts that define data collection and integration functionalities, and (2) RETEL utilizes a novel smart contract deployment and execution architecture. The BlockIoT-RETEL architecture combines these two components to provide a scalable mechanism for bootstrapping a personal health data collection infrastructure in the context of healthcare. We have compared the key functionalities of our system with existing comparable state-of-the-art systems in healthcare and evaluated the performance in prototypical healthcare settings with simulated data that shows promising results.","PeriodicalId":372721,"journal":{"name":"2021 IEEE International Conference on Blockchain (Blockchain)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116624257","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: 4