98 citations · 217 across the 18 of their papers we have counts for
14 papers · 1 filter
BlowLive: Blow-Based Multi-Factor Biometrics with Liveness Detection and Revocability
Eyasu Getahun Chekole, Howard Halim, Daniël Reijsbergen +1
Biometric authentication systems are increasingly deployed in security-critical applications, yet existing physiological and behavioral biometrics suffer from fundamental limitatio…
BlowPrint: Blow-Based Multi-Factor Biometrics for Smartphone User Authentication
Howard Halim, Eyasu Getahun Chekole, Daniël Reijsbergen +1
Biometric authentication is a widely used security mechanism that leverages unique physiological or behavioral characteristics to authenticate users. In multi-factor biometrics (MF…
ZK-SERIES: Privacy-Preserving Authentication using Temporal Biometric Data
Daniel Reijsbergen, Eyasu Getahun Chekole, Howard Halim +1
Biometric authentication relies on physiological or behavioral traits that are inherent to a user, making them difficult to lose, forge or forget. Biometric data with a temporal co…
PIEChain -- A Practical Blockchain Interoperability Framework
Daniël Reijsbergen, Aung Maw, Jingchi Zhang +2
A plethora of different blockchain platforms have emerged in recent years, but many of them operate in silos. As such, there is a need for reliable cross-chain communication to ena…
TAP: Transparent and Privacy-Preserving Data Services
Daniel Reijsbergen, Aung Maw, Zheng Yang +2
Users today expect more security from services that handle their data. In addition to traditional data privacy and integrity requirements, they expect transparency, i.e., that the…
Protecting the Integrity of IoT Sensor Data and Firmware With A Feather-Light Blockchain Infrastructure
Daniel Reijsbergen, Aung Maw, Sarad Venugopalan +3
Smart cities deploy large numbers of sensors and collect a tremendous amount of data from them. For example, Advanced Metering Infrastructures (AMIs), which consist of physical met…
Securing Smart Grids Through an Incentive Mechanism for Blockchain-Based Data Sharing
Daniel Reijsbergen, Aung Maw, Tien Tuan Anh Dinh +2
Smart grids leverage the data collected from smart meters to make important operational decisions. However, they are vulnerable to False Data Injection (FDI) attacks in which an at…
Transparent Electricity Pricing with Privacy
Daniel Reijsbergen, Zheng Yang, Aung Maw +2
Smart grids leverage data from smart meters to improve operations management and to achieve cost reductions. The fine-grained meter data also enable pricing schemes that simultaneo…
Decentralized Lightweight Detection of Eclipse Attacks on Bitcoin Clients
Bithin Alangot, Daniel Reijsbergen, Sarad Venugopalan +1
Clients of permissionless blockchain systems, like Bitcoin, rely on an underlying peer-to-peer network to send and receive transactions. It is critical that a client is connected t…
LaKSA: A Probabilistic Proof-of-Stake Protocol
Daniel Reijsbergen, Pawel Szalachowski, Junming Ke +2
We present Large-scale Known-committee Stake-based Agreement (LaKSA), a chain-based Proof-of-Stake protocol that is dedicated, but not limited, to cryptocurrencies. LaKSA minimizes…
The Security Reference Architecture for Blockchains: Towards a Standardized Model for Studying Vulnerabilities, Threats, and Defenses
Ivan Homoliak, Sarad Venugopalan, Qingze Hum +3
Blockchains are distributed systems, in which security is a critical factor for their success. However, despite their increasing popularity and adoption, there is a lack of standar…
StrongChain: Transparent and Collaborative Proof-of-Work Consensus
Pawel Szalachowski, Daniel Reijsbergen, Ivan Homoliak +1
Bitcoin is the most successful cryptocurrency so far. This is mainly due to its novel consensus algorithm, which is based on proof-of-work combined with a cryptographically-protect…
Incentives in Ethereum's Hybrid Casper Protocol
Vitalik Buterin, Daniel Reijsbergen, Stefanos Leonardos +1
We present an overview of hybrid Casper the Friendly Finality Gadget (FFG): a Proof-of-Stake checkpointing protocol overlaid onto Ethereum's Proof-of-Work blockchain. We describe i…
Rethinking Blockchain Security: Position Paper
Vincent Chia, Pieter Hartel, Qingze Hum +5
Blockchain technology has become almost as famous for incidents involving security breaches as for its innovative potential. We shed light on the prevalence and nature of these inc…