Auditability in Blockchain Systems Using Cryptographic Protocols

dc.contributor.advisorBaldimtsi, Foteini
dc.creatorChatzigiannis, Panagiotis
dc.date.accessioned2023-03-17T19:05:58Z
dc.date.available2023-03-17T19:05:58Z
dc.date.issued2022
dc.description.abstractEnforcement of policy regulations and availability of auditing mechanisms are crucial building blocks for the adoption of distributed payment systems. In this thesis we provide a series of proposals towards implementing such systems (usually based on a blockchain), augmented with such functionalities. We first propose MiniLedger, a new standalone system that provides both auditability and privacy for its users, while achieving near-constant storage requirements by all participants who maintain it. We then propose add-on protocols for the Diem blockchain, a recently developed permissioned payment system, which enables proving assets held by custodial wallets in that system. Then we propose gOTzilla, which enables proving assets owned by organizations or exchanges in permissionless blockchain systems (such as Bitcoin), while remaining efficient even in the case such systems scale to millions of unspent transaction outputs. Finally, we describe BBox-IoT, which provides a way for resource-constrained devices (typically encountered in an Industrial IoT setting) to efficiently sign data, therefore enabling auditing data provenance in a blockchain-based Industrial IoT system.
dc.format.extent214 pages
dc.format.mediumdoctoral dissertations
dc.identifier.urihttps://hdl.handle.net/1920/13220
dc.language.isoen
dc.rightsCopyright 2022 Panagiotis Chatzigiannis
dc.rights.urihttps://rightsstatements.org/vocab/InC/1.0
dc.subjectAuditability
dc.subjectBlockchain
dc.subjectCryptography
dc.subject.keywordsComputer science
dc.titleAuditability in Blockchain Systems Using Cryptographic Protocols
dc.typeText
thesis.degree.disciplineComputer Science
thesis.degree.grantorGeorge Mason University
thesis.degree.levelDoctoral
thesis.degree.namePh.D. in Computer Science

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