Thesis defense of Master of Engineering in computer science

Thesis defense of master of engineering in computer science

We’re proud to present the research accomplishments of our students from our master’s program of engineering in computer science who defended their theses in July 2023.

1. KHUN Dararith

Mr. KHUN Dararith embarked on his academic journey in the field of computer science at the Department of Information and Communication Engineering at the Institute of Technology of Cambodia. Starting his master’s in year 5 of his study, his passion and dedication took him across borders and got him into the field of Information Security. With a collaboration of ITC and University of Namur in Belgium,  Dararith got an opportunity to do and finally completed a research internship at UNamur, Belgium, where he contributed significantly to the InfoSec research project. 



“The traditional centralized identification systems lack user control and have a number of security flaws. The security and privacy of user records are crucial components in sensitive domains like healthcare. The adoption of Self-Sovereign Identity (SSI) can streamline patient data management, improve interoperability, and enhance trust among stakeholders, emerged as a promising solution for individuals to have control over their personal information and secure data sharing. However, establishing trust among parties in this decentralized ecosystem
is a critical component. For instance, issuers are the ones who issue verifiable credentials (VCs) to individuals, but it is hard to trust the credentials issued by them since they can potentially act as bad actors at any time. This paper proposes a novel reputation model for trust-based policy in self-sovereign identity systems specifically designed for the healthcare domain. The research aims to take the next step in the study of reputation models and apply a proposed architecture of this model to the combination of the existing technology of Hyperledger Arise
and Hyperledger Indy. The model employs a decentralized architecture to ensure data security, minimal risk of bad actors and enhance trust over the issuer. The results demonstrate the effectiveness of the model in accurately assessing trustworthiness and observing the trustable provider in the healthcare ecosystem. The proposed reputation model not only enhances the reliability of SSI systems in healthcare but also lays the groundwork for further research on the integration of trust-based policies and self-sovereign identity systems.”

2. LIV Bunthorn

Mr. LIV Bunthorn began his Engineering degree in computer science at the Department of Information and Communication Engineering at the Institute of Technology of Cambodia. Entering his master’s program in his fifth year, he was fueled by a keen interest in Information Security. Through a partnership between ITC and the University of Namur in Belgium, Bunthorn seized the chance to undertake and successfully finish a research internship at UNamur. Here, he made notable contributions to the InfoSec research. 

Thesis titled: “Implementation of Mobile Digital Wallet for Self-Sovereign Identity in Healthcare“.


“The existing identity management system in healthcare involves controlling identification and authentication through a single authority, managing unique identifiers that grant access to healthcare services. Self-sovereign identity (SSI) is a decentralized system that allows individuals to take control of their personal information, manage it securely, and share it with others as desired. In healthcare sector, SSI represents an innovative so solution to identity management, offering greater security and privacy for sensitive health data. One of the key components of SSI is the digital wallet, which enables patients to store and manage their health information securely. However, the existing identity management system patients difficult to control and manage their identities. They need to register new account whenever they go to new hospital. To address these issues, I do research to provide a configuration to implement a digital wallet for SSI application and provide the proof of concept of SSI application in the context of healthcare system by using of blockchain framework and tools including Hyperledger Indy and Aries, to provide patients a full control and manage over their identities. Hyperledger Indy serves as a distributed ledger manager that records all transactions within the system. Additionally, we leveraged Aries Cloud Agent Python (aca-py) to implement the SSI system more quickly while also adapting the proposed Aries Mobile Agent React Native (Aries
Bifold), which is a new mobile agent that allows users to store data locally in their mobile phone. This is a mobile agent for healthcare use cases. This SSI applications provides the patients to manage and control over their identity information, which is crucial for transforming the healthcare industry. By using digital wallets in the SSI system of the healthcare industry, we can ensure the protection of sensitive health data and give users full control over their identity. “

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