A Secure Data Sharing Platform Using Blockchain and Interplanetary File System
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Uila Supported Apps
Uila Supported Applications and Protocols updated Oct 2020 Application/Protocol Name Full Description 01net.com 01net website, a French high-tech news site. 050 plus is a Japanese embedded smartphone application dedicated to 050 plus audio-conferencing. 0zz0.com 0zz0 is an online solution to store, send and share files 10050.net China Railcom group web portal. This protocol plug-in classifies the http traffic to the host 10086.cn. It also 10086.cn classifies the ssl traffic to the Common Name 10086.cn. 104.com Web site dedicated to job research. 1111.com.tw Website dedicated to job research in Taiwan. 114la.com Chinese web portal operated by YLMF Computer Technology Co. Chinese cloud storing system of the 115 website. It is operated by YLMF 115.com Computer Technology Co. 118114.cn Chinese booking and reservation portal. 11st.co.kr Korean shopping website 11st. It is operated by SK Planet Co. 1337x.org Bittorrent tracker search engine 139mail 139mail is a chinese webmail powered by China Mobile. 15min.lt Lithuanian news portal Chinese web portal 163. It is operated by NetEase, a company which 163.com pioneered the development of Internet in China. 17173.com Website distributing Chinese games. 17u.com Chinese online travel booking website. 20 minutes is a free, daily newspaper available in France, Spain and 20minutes Switzerland. This plugin classifies websites. 24h.com.vn Vietnamese news portal 24ora.com Aruban news portal 24sata.hr Croatian news portal 24SevenOffice 24SevenOffice is a web-based Enterprise resource planning (ERP) systems. 24ur.com Slovenian news portal 2ch.net Japanese adult videos web site 2Shared 2shared is an online space for sharing and storage. -
What Is Peer-To-Peer File Transfer? Bandwidth It Can Use
sharing, with no cap on the amount of commonly used to trade copyrighted music What is Peer-to-Peer file transfer? bandwidth it can use. Thus, a single NSF PC and software. connected to NSF’s LAN with a standard The Recording Industry Association of A peer-to-peer, or “P2P,” file transfer 100Mbps network card could, with KaZaA’s America tracks users of this software and has service allows the user to share computer files default settings, conceivably saturate NSF’s begun initiating lawsuits against individuals through the Internet. Examples of P2P T3 (45Mbps) internet connection. who use P2P systems to steal copyrighted services include KaZaA, Grokster, Gnutella, The KaZaA software assesses the quality of material or to provide copyrighted software to Morpheus, and BearShare. the PC’s internet connection and designates others to download freely. These services are set up to allow users to computers with high-speed connections as search for and download files to their “Supernodes,” meaning that they provide a How does use of these services computers, and to enable users to make files hub between various users, a source of available for others to download from their information about files available on other create security issues at NSF? computers. users’ PCs. This uses much more of the When configuring these services, it is computer’s resources, including bandwidth possible to designate as “shared” not only the and processing capability. How do these services function? one folder KaZaA sets up by default, but also The free version of KaZaA is supported by the entire contents of the user’s computer as Peer to peer file transfer services are highly advertising, which appears on the user well as any NSF network drives to which the decentralized, creating a network of linked interface of the program and also causes pop- user has access, to be searchable and users. -
Implementation of Smart Contracts for Blockchain Based Iot Applications
Implementation of smart contracts for blockchain based IoT applications Georgios Papadodimas, Georgios Palaiokrasas, Antoniοs Litke, Theodora Varvarigou Electrical and Computer Engineering Department National Technical University of Athens Athens, Greece [email protected], [email protected], [email protected], [email protected] Abstract—An increasing number of people, organizations [11], funding mechanisms [12] and many more. A milestone and corporations are expressing their interest in the for the course of blockchain technology was the development decentralization technology of the blockchain. The creation of of Ethereum project, offering new solutions by enabling smart the blockchain marks the time when we start building contracts’ implementation and execution. The Ethereum distributed peer-to-peer networks consisting of non-trusting blockchain is a Turing complete platform for executing smart members that interact with each other without a trusted contracts [13], [14], and not just a ledger serving financial intermediary but in a verifiable manner. In this paper, we transactions. It is a suite of tools and protocols for the creation propose a decentralized application (DApp) based on and operation of Decentralized Applications (DApps), blockchain technology for sharing Internet of Things (IoT) “applications that run exactly as programmed without any sensors’ data, and demonstrate various challenges addressed possibility of downtime, censorship, fraud or third-party during the development process. This application combines blockchain technology with IoT and operates through smart interference”. It also supports a contract-oriented, high-level, contracts that are executed on the Ethereum blockchain. More Turing-complete programming language [15], allowing specifically the application is a platform for sharing (buying and anyone to write smart contracts and create DApps. -
Versus Decentralized Prediction Markets for Financial Assets
Wolfgang Pacher Centralized- versus Decentralized Prediction Markets for Financial Assets Are blockchain-based prediction market applications simply the better solution to forecasting financial assets? MASTER THESIS submitted in fulfilment of the requirements for the degree of Master of Science Programme: Master's programme Applied Business Administration Branch of study: General Management Alpen-Adria-Universität Klagenfurt Evaluator Assoc.Prof.Mag.Dr. Alexander Brauneis Alpen-Adria-Universität Klagenfurt Institut für Finanzmanagement Klagenfurt, May 2019 Affidavit I hereby declare in lieu of an oath that - the submitted academic paper is entirely my own work and that no auxiliary materials have been used other than those indicated, - I have fully disclosed all assistance received from third parties during the process of writing the thesis, including any significant advice from supervisors, - any contents taken from the works of third parties or my own works that have been included either literally or in spirit have been appropriately marked and the respective source of the information has been clearly identified with precise bibliographical references (e.g. in footnotes), - to date, I have not submitted this paper to an examining authority either in Austria or abroad and that - when passing on copies of the academic thesis (e.g. in bound, printed or digital form), I will ensure that each copy is fully consistent with the submitted digital version. I understand that the digital version of the academic thesis submitted will be used for the purpose of conducting a plagiarism assessment. I am aware that a declaration contrary to the facts will have legal consequences. Wolfgang Pacher m.p. -
Evmpatch: Timely and Automated Patching of Ethereum Smart Contracts
EVMPatch: Timely and Automated Patching of Ethereum Smart Contracts Michael Rodler Wenting Li Ghassan O. Karame University of Duisburg-Essen NEC Laboratories Europe NEC Laboratories Europe Lucas Davi University of Duisburg-Essen Abstract some of these contracts hold, smart contracts have become an appealing target for attacks. Programming errors in smart Recent attacks exploiting errors in smart contract code had contract code can have devastating consequences as an attacker devastating consequences thereby questioning the benefits of can exploit these bugs to steal cryptocurrency or tokens. this technology. It is currently highly challenging to fix er- rors and deploy a patched contract in time. Instant patching is Recently, the blockchain community has witnessed several especially important since smart contracts are always online incidents due smart contract errors [7, 39]. One especially due to the distributed nature of blockchain systems. They also infamous incident is the “TheDAO” reentrancy attack, which manage considerable amounts of assets, which are at risk and resulted in a loss of over 50 million US Dollars worth of often beyond recovery after an attack. Existing solutions to Ether [31]. This led to a highly debated hard-fork of the upgrade smart contracts depend on manual and error-prone pro- Ethereum blockchain. Several proposals demonstrated how to defend against reentrancy vulnerabilities either by means of cesses. This paper presents a framework, called EVMPATCH, to instantly and automatically patch faulty smart contracts. offline analysis at development time or by performing run-time validation [16, 23, 32, 42]. Another infamous incident is the EVMPATCH features a bytecode rewriting engine for the pop- ular Ethereum blockchain, and transparently/automatically parity wallet attack [39]. -
ARK Whitepaper
ARK Whitepaper A Platform for Consumer Adoption v.1.0.3 The ARK Crew ARK Whitepaper v.1.0.3 Table Of Contents Overview………………………………………………………………...……………………………….……………….………………………………………………………….….3 Purpose of this Whitepaper………………………………………………………………………………………………………………………..….……….3 Why?…………………………………………………………………………………………………………………….…………………………………………………….…………..4 ARK…………………………………………………………………………………………………….……………….…………………………………………………………………..5 ARK IS………………………………………………………………………………………………....……………….………………………………………………………………..5 ARK: Technical Details……………………………………….…….…..…………………………...……………….………………...…………………………...6 - Delegated Proof of Stake…………………………….……………...………………………….……………………………………….………...…...6 - Hierarchical Deterministic (HD) Wallets (BIP32)…………………………………………………….....…………………..…..8 - Fees……………………………………………………………………………………………………………….……………….…...………………………………..……...8 - ARK Delegates and Delegate Voting.…………………………………………………………………………………...………………….9 - Bridged Blockchains (SmartBridges)....................………………………………………………………………….………...…….10 - POST ARK-TEC Token Distribution …………………..…………………………………….………………….………..……..…..……….11 - Testnet Release……………………………………………….…………………………………………………………………….………...….....12 And Beyond?…………………………………………………………………….………...……………………………………….………………………...……….…12 Addendum 1: ARK IS…(Cont.)...……..……..…………....…..………...………………………………………...………………………......……12 -
IPFS and Friends: a Qualitative Comparison of Next Generation Peer-To-Peer Data Networks Erik Daniel and Florian Tschorsch
1 IPFS and Friends: A Qualitative Comparison of Next Generation Peer-to-Peer Data Networks Erik Daniel and Florian Tschorsch Abstract—Decentralized, distributed storage offers a way to types of files [1]. Napster and Gnutella marked the beginning reduce the impact of data silos as often fostered by centralized and were followed by many other P2P networks focusing on cloud storage. While the intentions of this trend are not new, the specialized application areas or novel network structures. For topic gained traction due to technological advancements, most notably blockchain networks. As a consequence, we observe that example, Freenet [2] realizes anonymous storage and retrieval. a new generation of peer-to-peer data networks emerges. In this Chord [3], CAN [4], and Pastry [5] provide protocols to survey paper, we therefore provide a technical overview of the maintain a structured overlay network topology. In particular, next generation data networks. We use select data networks to BitTorrent [6] received a lot of attention from both users and introduce general concepts and to emphasize new developments. the research community. BitTorrent introduced an incentive Specifically, we provide a deeper outline of the Interplanetary File System and a general overview of Swarm, the Hypercore Pro- mechanism to achieve Pareto efficiency, trying to improve tocol, SAFE, Storj, and Arweave. We identify common building network utilization achieving a higher level of robustness. We blocks and provide a qualitative comparison. From the overview, consider networks such as Napster, Gnutella, Freenet, BitTor- we derive future challenges and research goals concerning data rent, and many more as first generation P2P data networks, networks. -
Metamask Pre-Assignment
MMS 562F: Tech Driven Transformation MetaMask Pre-Assignment Campbell R. Harvey Duke University and NBER February 2021 Setup • Metamask is a cryptocurrency wallet that is used to interface with the Ethereum-based Apps • We will be setting up this Wallet on your mobile device (iOS or Android only) – If you are unable to use a mobile device, the end of this deck has a web browser tutorial (Page 19) – If you already have MetaMask on your browser, the end of this deck has a tutorial to link your Web Account to the Mobile App (Page 25) Campbell R. Harvey 2021 2 Setup • Download the Metamask app from the App Store or Google Play Store • Click Get Started • Click Create a new wallet • Create a new account by typing in a password of your choosing and pressing “Create” • Go through the prompts to secure your wallet • Store Secret Backup Phrase in a secure location, ideally paper or a password manager – not on your phone or computer. • Type in secret backup phrase Campbell R. Harvey 2021 3 1 Using MetaMask 1. Network • This determines which Ethereum Network you are using. Click on this to see all network options in a 2 dropdown. For this class we will only discuss or use the Main Ethereum Network and the Ropsten Test Network. 3 Campbell R. Harvey 2021 4 1 Using MetaMask 1. Network • The Ethereum Mainnet is where live ether (ETH) with real value exists and is 2 used for payment and applications. I will refer to this as the “main network” or the “mainnet” 3 Campbell R. -
Will Sci-Hub Kill the Open Access Citation Advantage and (At Least for Now) Save Toll Access Journals?
Will Sci-Hub Kill the Open Access Citation Advantage and (at least for now) Save Toll Access Journals? David W. Lewis October 2016 © 2016 David W. Lewis. This work is licensed under a Creative Commons Attribution 4.0 International license. Introduction It is a generally accepted fact that open access journal articles enjoy a citation advantage.1 This citation advantage results from the fact that open access journal articles are available to everyone in the word with an Internet collection. Thus, anyone with an interest in the work can find it and use it easily with no out-of-pocket cost. This use leads to citations. Articles in toll access journals on the other hand, are locked behind paywalls and are only available to those associated with institutions who can afford the subscription costs, or who are willing and able to purchase individual articles for $30 or more. There has always been some slippage in the toll access journal system because of informal sharing of articles. Authors will usually send copies of their work to those who ask and sometime post them on their websites even when this is not allowable under publisher’s agreements. Stevan Harnad and his colleagues proposed making this type of author sharing a standard semi-automated feature for closed articles in institutional repositories.2 The hashtag #ICanHazPDF can be used to broadcast a request for an article that an individual does not have access to.3 Increasingly, toll access articles are required by funder mandates to be made publically available, though usually after an embargo period. -
Validation Rules for Enhanced Foxy P2P Network Investigations Ricci Ieong, Kam-Pui Chow
Validation Rules for Enhanced Foxy P2P Network Investigations Ricci Ieong, Kam-Pui Chow To cite this version: Ricci Ieong, Kam-Pui Chow. Validation Rules for Enhanced Foxy P2P Network Investigations. 10th IFIP International Conference on Digital Forensics (DF), Jan 2014, Vienna, Austria. pp.73- 83, 10.1007/978-3-662-44952-3_6. hal-01393761 HAL Id: hal-01393761 https://hal.inria.fr/hal-01393761 Submitted on 8 Nov 2016 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Distributed under a Creative Commons Attribution| 4.0 International License Chapter 6 VALIDATION RULES FOR ENHANCED FOXY P2P NETWORK INVESTIGATIONS Ricci Ieong and Kam-Pui Chow Abstract Experiments with the Foxy P2P network have demonstrated that the first uploader of a file can be identified when search queries are sub- mitted to all the network nodes during initial file sharing. However, in real Foxy networks, file search queries are not transmitted to the entire Foxy network and this process may not identify the first uploader. This paper presents a set of validation rules that validate the observed first uploader. The validation rules define the seeder curve that consistently describes the number of uploaders over time. -
Decentralized Reputation Model and Trust Framework Blockchain and Smart Contracts
IT 18 062 Examensarbete 30 hp December 2018 Decentralized Reputation Model and Trust Framework Blockchain and Smart contracts Sujata Tamang Institutionen för informationsteknologi Department of Information Technology Abstract Decentralized Reputation Model and Trust Framework: Blockchain and Smart contracts Sujata Tamang Teknisk- naturvetenskaplig fakultet UTH-enheten Blockchain technology is being researched in diverse domains for its ability to provide distributed, decentralized and time-stamped Besöksadress: transactions. It is attributed to by its fault-tolerant and zero- Ångströmlaboratoriet Lägerhyddsvägen 1 downtime characteristics with methods to ensure records of immutable Hus 4, Plan 0 data such that its modification is computationally infeasible. Trust frameworks and reputation models of an online interaction system are Postadress: responsible for providing enough information (e.g., in the form of Box 536 751 21 Uppsala trust score) to infer the trustworthiness of interacting entities. The risk of failure or probability of success when interacting with an Telefon: entity relies on the information provided by the reputation system. 018 – 471 30 03 Thus, it is crucial to have an accurate, reliable and immutable trust Telefax: score assigned by the reputation system. The centralized nature of 018 – 471 30 00 current trust systems, however, leaves the valuable information as such prone to both external and internal attacks. This master's thesis Hemsida: project, therefore, studies the use of blockchain technology as an http://www.teknat.uu.se/student infrastructure for an online interaction system that can guarantee a reliable and immutable trust score. It proposes a system of smart contracts that specify the logic for interactions and models trust among pseudonymous identities of the system. -
Coinbase Explores Crypto ETF (9/6) Coinbase Spoke to Asset Manager Blackrock About Creating a Crypto ETF, Business Insider Reports
Crypto Week in Review (9/1-9/7) Goldman Sachs CFO Denies Crypto Strategy Shift (9/6) GS CFO Marty Chavez addressed claims from an unsubstantiated report earlier this week that the firm may be delaying previous plans to open a crypto trading desk, calling the report “fake news”. Coinbase Explores Crypto ETF (9/6) Coinbase spoke to asset manager BlackRock about creating a crypto ETF, Business Insider reports. While the current status of the discussions is unclear, BlackRock is said to have “no interest in being a crypto fund issuer,” and SEC approval in the near term remains uncertain. Looking ahead, the Wednesday confirmation of Trump nominee Elad Roisman has the potential to tip the scales towards a more favorable cryptoasset approach. Twitter CEO Comments on Blockchain (9/5) Twitter CEO Jack Dorsey, speaking in a congressional hearing, indicated that blockchain technology could prove useful for “distributed trust and distributed enforcement.” The platform, given its struggles with how best to address fraud, harassment, and other misuse, could be a prime testing ground for decentralized identity solutions. Ripio Facilitates Peer-to-Peer Loans (9/5) Ripio began to facilitate blockchain powered peer-to-peer loans, available to wallet users in Argentina, Mexico, and Brazil. The loans, which utilize the Ripple Credit Network (RCN) token, are funded in RCN and dispensed to users in fiat through a network of local partners. Since all details of the loan and payments are recorded on the Ethereum blockchain, the solution could contribute to wider access to credit for the unbanked. IBM’s Payment Protocol Out of Beta (9/4) Blockchain World Wire, a global blockchain based payments network by IBM, is out of beta, CoinDesk reports.