Ruiying Du

Checks and balances: A tripartite public key infrastructure for secure web-based connections

2017

Recent real-world attacks against Certification Authorities (CAs) and fraudulently issued certificates arouse the public to rethink the security of public key infrastructure for web-based connections. To distribute the trust of CAs, notaries, as an independent …

Surveillant: a supervision mechanism between blockchains for efficient cross-chain verification

2022 · KSII Transactions on Internet and Information Systems

Blockchain interoperability, which refers in particular to the ability to access information across blockchain systems, plays the key role for different blockchains to communicate with each other, and further supports the superstructure built on top …

HeteroSample: Meta-Path Guided Sampling for Heterogeneous Graph Representation Learning

2024 · IEEE Internet of Things Journal

The rapid expansion of Internet of Things (IoT) has resulted in vast, heterogeneous graphs that capture complex interactions among devices, sensors, and systems. Efficient analysis of these graphs is critical for deriving insights in IoT …

HT-Auth: Secure VR Headset Authentication via Subtle Head Tremors

2025 · Proceedings of the ACM on Interactive Mobile Wearable and Ubiquitous Technologies

While Virtual Reality (VR) applications have gained popularity in recent years, efficiently identifying users on VR devices remains challenging. Current solutions, such as passwords and digital PINs, relying on handheld controllers or in-air hand gestures, …

MagLive: Robust Voice Liveness Detection on Smartphones Using Magnetic Pattern Changes

2026 · IEEE Transactions on Information Forensics and Security

Voice authentication has been widely used on smartphones. However, it remains vulnerable to spoofing attacks, where the attacker replays recorded voice samples from authentic humans using loudspeakers to bypass the voice authentication system. In this …