Επαληθεύσιμη κατανεμημένη αποθήκευση με χρήση blockchain

Κώνστα, Αλύζια-Μαρία; Konsta, Alyzia-Maria

dc.contributor.author	Κώνστα, Αλύζια-Μαρία	el
dc.contributor.author	Konsta, Alyzia-Maria	en
dc.date.accessioned	2020-12-14T08:32:42Z
dc.date.available	2020-12-14T08:32:42Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/52495
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.20193
dc.rights	Default License
dc.subject	Blockchain	en
dc.subject	Merkle trees	el
dc.subject	HDFS	en
dc.title	Επαληθεύσιμη κατανεμημένη αποθήκευση με χρήση blockchain	el
heal.type	bachelorThesis
heal.secondaryTitle	Verifiable Distributed Storage Using Blockchain	en
heal.classification	Blockchain	el
heal.language	el
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2020-10-29
heal.abstract	The purpose of the diploma thesis is to develop a data storage system, which provides high performance while ensuring data security. To achieve high performance but also for scalability in relation to the volume of data, we usually resort to distributed approaches such as HDFS or Google GFS. However, as there is no longer a central authority that we trust but in a distributed system nodes can run from different physical entities, the issue of data trust and security arises. To deal with this problem, in this work we use blockchain technology. The ability to execute code in a verifiable way (smart contracts) has led to the adoption of blockchains in a variety of applications beyond cryptocurrencies. The system we developed integrates the Ethereum blockchain into HDFS and ensures that no node can modify / delete files without doing so through the HDFS protocol. The experimental evaluation of the system showed that security does not come for free but we have to sacrifice part of the performance. More specifically, we pay on time an additional x% when importing files and a y% on system availability.	en
heal.advisorName	Κοζύρης, Νεκτάριος	el
heal.committeeMemberName	Κοζύρης, Νεκτάριος	el
heal.committeeMemberName	Πνευματικάτος, Διονύσιος	el
heal.committeeMemberName	Γκούμας, Γεώργιος	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Ηλεκτρολόγων Μηχανικών και Μηχανικών Υπολογιστών. Τομέας Τεχνολογίας Πληροφορικής και Υπολογιστών	el
heal.academicPublisherID	ntua
heal.numberOfPages	111 σ.	el
heal.fullTextAvailability	false