Cosmin-Iulian Irimia
Traditional paper-based document management has long posed challenges related to security, authenticity, and efficiency. Despite advances in digitalization, official documents remain vulnerable to forgery, loss, and unauthorized access. This thesis proposes a decentralized infrastructure for digital notarization, signing, and sharing of documents using blockchain technology. The research addresses key issues of transparency, immutability, and feasibility by defining system requirements, evaluating existing solutions, and proposing a novel architecture based on distributed systems.
The Introduction chapter outlines the motivation behind this research, highlighting the inefficiencies of current bureaucratic processes and the need for a secure, digital alternative. The Background & Literature Overview presents an in-depth review of existing technologies, such as optical character recognition, digital signatures, and blockchain-based solutions, assessing their advantages and limitations. The System Requirements chapter defines the functional and non-functional requirements necessary for the proposed infrastructure, detailing key use cases and constraints.
The Proposed Architecture chapter introduces a distributed system design based on microservices, blockchain, and decentralized storage, ensuring scalability and flexibility. The Prototype Implementation discusses the practical development of core system components, including data extraction, document obfuscation, and cryptographic notarization. The Evaluation and Comparison chapter assesses the system’s performance, security, and usability, comparing it against existing solutions to demonstrate its advantages and areas for improvement. Finally, the Conclusions chapter reflects on the research contributions, critiques the system’s limitations, and proposes future directions for enhancing digital notarization and document management.
By combining cryptographic techniques with decentralized storage, this research contributes to the development of a more secure and efficient framework for managing official documents. The findings highlight the potential of blockchain-based digital notarization to streamline bureaucratic processes, mitigate security risks, and enhance user trust in digital document management.
Bibtex
@TechReport{didnssfb,
author = "Cosmin-Iulian Irimia",
title = "Decentralized Infrastructure for Digital Notarizing, Signing and Sharing Files using Blockchain (PhD Thesis)”,
institution = "``Al.I.Cuza'' University of Ia{c s}i, Faculty of Computer Science",
year = "2026",
number = "TR 26-01",
url = "https://publications.info.uaic.ro/technical-reports/archive/tr26-01-2026-decentralized-infrastructure-for-digital-notarizing-signing-and-sharing-files-using-blockchain-PhD-thesis/"
}