2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)最新文献_第2页

A Controlled Natural Language to Support Intent-based Blockchain Selection 支持基于意图的区块链选择的受控自然语言

2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2020-05-01 DOI: 10.1109/ICBC48266.2020.9169473

E. Scheid, Patrick Widmer, B. Rodrigues, M. Franco, B. Stiller

{"title":"A Controlled Natural Language to Support Intent-based Blockchain Selection","authors":"E. Scheid, Patrick Widmer, B. Rodrigues, M. Franco, B. Stiller","doi":"10.1109/ICBC48266.2020.9169473","DOIUrl":"https://doi.org/10.1109/ICBC48266.2020.9169473","url":null,"abstract":"In the last years, cryptocurrencies have become increasingly popular along with their underlying distributed ledger technology, referred to as a Blockchain (BC). Nowadays, a wide variety of BC implementations are available. However, the selection of a suitable implementation for a particular application or use case is complex because it requires a technical understanding of the underlying BC implementation aspects. Therefore, this paper proposes a Controlled Natural Language (CNL) to extends existing BC selection solutions to abstract underlying implementation details. The approach allows the specification abstract high-level policies, referred to as intents, in an English-based language. The approach is inspired by previous approaches from the network management field. Moreover, a state machine-based refinement technique is proposed to refine these intents into low-level BC selection policies. The results of the performance evaluation of the prototype implementation show that the refinement process presents a minimal overhead. In addition, the perceived intuitiveness of the CNL by users was assessed in a survey. The results of the survey suggest that technical and non-technical individuals benefit from an intentbased approach equally.","PeriodicalId":420845,"journal":{"name":"2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123588139","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: 8

Determining Optimal Shard Size in a Hierarchical Blockchain Architecture 在分层区块链架构中确定最佳分片大小

2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2020-05-01 DOI: 10.1109/ICBC48266.2020.9169448

Shyam Kantesariya, D. Goswami

{"title":"Determining Optimal Shard Size in a Hierarchical Blockchain Architecture","authors":"Shyam Kantesariya, D. Goswami","doi":"10.1109/ICBC48266.2020.9169448","DOIUrl":"https://doi.org/10.1109/ICBC48266.2020.9169448","url":null,"abstract":"Monolithic blockchain architectures employed in Bitcoin and other major alt-coins are inherently non-scalable. In recent past, some hierarchical approaches have been explored to shard the decentralized blockchain to improve scalability. However, there is no discussion in the literature about how to determine an optimal shard size to maximize performance and how the presence of malicious or faulty nodes can impact on choosing an optimal shard size. To address these issues, this paper presents a sharding scheme and validation protocols for a hierarchical blockchain architecture named OptiShard. The hierarchy divides the network nodes into multiple disjoint shards and the majority of transactions are distributed among these shards in non-overlapped fashion. Optimal shard size is determined based on two parameters: performance and correctness of transaction validation in the presence of malicious or faulty nodes. OptiShard provides guaranteed majority of good shards, subject to a maximum allowable threshold of faulty nodes, by choosing the right shard size. It also provides a mechanism for identifying faulty shards and discarding all their transactions through the overlapping of a small fraction of transactions across all the shards. Experimental results performed on up to 800 Amazon EC2 nodes conform to the theoretical performance analyses and exhibit the impact of sharding the network on performance.","PeriodicalId":420845,"journal":{"name":"2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129673634","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: 10

SkipSim: Scalable Skip Graph Simulator SkipSim:可伸缩跳跃图形模拟器

2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2020-05-01 DOI: 10.1109/ICBC48266.2020.9169426

Yahya Hassanzadeh-Nazarabadi, Ali Utkan Sahin, Öznur Özkasap, Alptekin Küpçü

引用次数: 3

Building Hybrid DApps using Blockchain Tactics -The Meta-Transaction Example 使用区块链策略构建混合dapp -元事务示例

2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2020-05-01 DOI: 10.1109/ICBC48266.2020.9169423

F. Blum, Benedikt Severin, Michael Hettmer, Philipp Hückinghaus, V. Gruhn

{"title":"Building Hybrid DApps using Blockchain Tactics -The Meta-Transaction Example","authors":"F. Blum, Benedikt Severin, Michael Hettmer, Philipp Hückinghaus, V. Gruhn","doi":"10.1109/ICBC48266.2020.9169423","DOIUrl":"https://doi.org/10.1109/ICBC48266.2020.9169423","url":null,"abstract":"Building blockchain-based applications and deciding which elements of an architecture should employ blockchain technologies poses several challenges. Architectural design decisions have a strong impact on quality attributes such as privacy, operational cost, transparency, risk and user experience (UX). To deal with these challenges, we propose a structured approach using existing architectural concepts such as strategies, tactics and design patterns and illustrate their application using the Meta-Transaction design pattern. Meta-Transactions are cryptographically signed function calls (i.e. transactions) a user sends to a backend. The backend submits the transaction to the blockchain and pays the fees on behalf of the user. Due to the cryptographic signature, the backend is not able to manipulate the function name or its parameters, thus acting as a trustless proxy. Several other design patterns exist in the area of blockchain-oriented applications but it remains unclear how to decide which are suitable for a given use case and how quality attributes of the resulting system are affected. By using the Meta-Transaction design pattern as an example, this paper motivates why Blockchain Tactics and corresponding design patterns are necessary and help to structure best practices and common solutions for challenges of using blockchain technology.","PeriodicalId":420845,"journal":{"name":"2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114245066","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: 6

SC-FLARE: Cooperative DDoS Signaling based on Smart Contracts SC-FLARE:基于智能合约的协同DDoS信令

2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2020-05-01 DOI: 10.1109/ICBC48266.2020.9169750

B. Rodrigues, Spasen Trendafilov, E. Scheid, B. Stiller

引用次数: 7

A containerized proof-of-concept implementation of LightChain system LightChain系统的容器化概念验证实现

2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2020-05-01 DOI: 10.1109/ICBC48266.2020.9169463

Yahya Hassanzadeh-Nazarabadi, Nazir Nayal, Shadi S. Hamdan, Öznur Özkasap, Alptekin Küpçü

引用次数: 8

BPCEX: Towards Blockchain-based Privacy-preserving Currency Exchange BPCEX:迈向基于区块链的隐私保护货币交换

2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2020-05-01 DOI: 10.1109/ICBC48266.2020.9169443

Wulu Li, Lei Chen, Xin Lai, Xiao Zhang, Jiajun Xin

{"title":"BPCEX: Towards Blockchain-based Privacy-preserving Currency Exchange","authors":"Wulu Li, Lei Chen, Xin Lai, Xiao Zhang, Jiajun Xin","doi":"10.1109/ICBC48266.2020.9169443","DOIUrl":"https://doi.org/10.1109/ICBC48266.2020.9169443","url":null,"abstract":"Privacy-preserving currency exchange between different cryptocurrencies on blockchain remains an open problem as the existing currency exchange schemes cannot provide anonymity of traders or confidentiality of exchange amount. To solve this problem, we introduce BPCEX: a privacy-preserving currency exchange scheme which protects traders' identities and the exchange amount, by usage of techniques including linkable ring signature, range proof, Diffie-Hellman key ex¬change, Pedersen commitment and UTXO swap. In BPCEX, the traders' identities are hidden to verifiers and dealmakers, while the exchange amounts are hidden to the verifiers. BPCEX supports floating exchange rate, partial deal and public verifica¬tion, without additional confirmation of traders, which improves the success rate and shortens the waiting time of the deal. Moreover, BPCEX is compatible with the auditable privacy-preserving blockchain system, which realizes the traceability of traders' identities and the exchange amount to prevent money laundering and illegal exchange, making BPCEX suitable in real-life applications, including currency market and stock market.","PeriodicalId":420845,"journal":{"name":"2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122561357","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

A Blockchain-Based Privacy-Preserving Intelligent Charging Station Selection for Electric Vehicles 基于区块链的电动汽车隐私保护智能充电站选择

2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2020-05-01 DOI: 10.1109/ICBC48266.2020.9169419

S. Danish, Kaiwen Zhang, H. Jacobsen

引用次数: 10

ICBC 2020 Authors Index ICBC 2020作者索引

2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2020-05-01 DOI: 10.1109/icbc48266.2020.9169445

引用次数: 0

Privacy-Preserving Netting in Local Energy Grids 局部能源网格中的隐私保护网络

2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2020-05-01 DOI: 10.1109/ICBC48266.2020.9169440

Jacob Eberhardt, Marco Peise, Dong-Ha Kim, S. Tai

{"title":"Privacy-Preserving Netting in Local Energy Grids","authors":"Jacob Eberhardt, Marco Peise, Dong-Ha Kim, S. Tai","doi":"10.1109/ICBC48266.2020.9169440","DOIUrl":"https://doi.org/10.1109/ICBC48266.2020.9169440","url":null,"abstract":"The production of renewable energies by individual households typically is small-scale and not profitable without public subsidies, yet a critical factor in preventing further global warming. Unlike market-based peer-to-peer trading solutions, which require households to engage in costly peer-to-peer trading activities, we propose a community-based approach where households in a local distribution grid share the energy they produce in a netting process to maximize internal consumption. The technical instantiation of this idea in real-world energy grids comes with several challenges. Households within a community do not necessarily trust each other or electric utilities. Furthermore, energy consumption data is highly sensitive and must be protected. Further idiosyncrasies of national energy markets, regulatory frameworks, and current grid infrastructure exist. Addressing all these challenges, we propose a blockchain-based system that leverages zero-knowledge off-chain computations to facilitate automated energy sharing within a community in a trustless and privacy-preserving way. We provide a proof- of-concept implementation using the ZoKrates framework for verifiable off-chain computations and the Ethereum Blockchain. To support our claims, we provide evaluation results obtained in the context of a major German national research project on blockchain-based energy networks.","PeriodicalId":420845,"journal":{"name":"2020 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132868949","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: 6