Glados, a secure access control system

We have created a Secure Access Control System, named Glados. The goal of this system is to limit the access to a building, and separate 'zones' in that building, to authorized persons only. Our primary concerns were security and maintainability. Special care has been taken in identifying possible attack vectors and defending against those. This...

MijnID - Security for an Android Application

This document reports the development of a proof of concept for the MijnID Android mobile application. Identity theft and identity fraud are serious problems, leaving thousands of Dutch citizens with debts and damages each year. MijnID aims to improve detection by providing users with insight on what is happening to their personal details as...

EGA Membership Card System

The E-Sports Game Arena will launch an esports cafe in the summer of 2017. At this location, the company wants to introduce membership cards to create a sense of community. The goal of the project was to explore the technological possibilities of such cards and to create a working prototype that makes use of these possibilities.<br/> <br/>At the...

LRFP : Extending local routing protocols in layer 2 networks with a secure fee model

Blockchains like Bitcoin are known to be victim of scalability issues. The lack in high throughput and low latency form a great bottleneck to its network. A promis- ing solution are layer 2 protocols, more precisely payment channel networks (PCN). Payment success rates are a common metric in these networks. These rates can be in- creased by...

Security and privacy in medical data sharing through blockchain

The sharing of medical data is becoming ever more important. More and more health-related data is being generated everyday and as will be shown later, its primary as well as its secondary usage brings many benefits to the healthcare system. However, medical data systems are not fail proof and are often the target of cyber-attacks, compromising...

An evaluation of the reentrancy vulnerability on GoQuorum-based smartcontracts

Within the context of the Ethereum blockchain protocol, reentrancy is a well-known and well-researched smart contract vulnerability. However, when considering GoQuorum, an Ethereum soft fork, barely any research discussing smart contract vulnerabilities exists. This report aims to partly fill this research gap by evaluating the reentrancy smart...

Revisiting smart contract vulnerabilities in Hyperledger Fabric

Hyperledger Fabric is a permissioned enterprise blockchain allowing organizations to collaborate and automate processes via smart contracts. However, these contracts could contain security vulnerabilities leading to unexpected behavior or other negative consequences. Therefore, this study takes a closer look at three reported smart contract...

A New Standard: Redesigning Autonomous Vehicle Communication Using Multi-Party Computation

Around the world millions of people get injured due to traffic accidents. Autonomous vehicles are expected to significantly reduce these numbers. To increase safety, autonomous vehicle communication can be used. Current vehicle communication networks called VANETs have security and privacy protection problems and the vehicle industry is...

Secure MPC-Sortition: Consolidating Innovations in Democracy and Cryptography

Globally, citizens’ assemblies have been gaining momentum as a way to counter dissatisfaction in democracies. Central to the citizens’ assembly is sortition, the process of randomly selecting political representatives given certain demographic criteria. In order to have an assembly representative of the population, personal data is necessary to...

Improving security and efficiency in IoT data management using BC based solutions

The Internet of Things (IoT) consists out of billions of devices. This vast size magnifies the security and efficiency challenges the IoT faces. Blockchain (BC) features like decentralisation, immutability and smart contracts can negate these IoT challenges. <br/>In this paper we discuss how BC based solutions can significantly increase the...

Exploring the Impact of Single-Character Attacks in Federated Learning Language Classification: Introducing the Novel Single-Character Strike

Federated learning (FL) is a privacy preserving machine learning approach which allows a machine learning model to be trained in a distributed fashion without ever sharing user data. Due to the large amount of valuable text and voice data stored on end-user devices, this approach works particularly well for natural language processing (NLP)...