Wenjun Fan

SEAL: Secure and Efficient Authentication using Linkage for Blockchain Networks

2024

The cryptocurrency's permissionless and large-scale broadcasting requirements prohibit the traditional authentication implementation on the blockchain's underlying peer-to-peer (P2P) networking. Thus, blockchain networking implementations remain vulnerable to networking integrity threats such as spoofing or hijacking. We …

Unveiling Vulnerabilities in Bitcoin's Misbehavior-Score Mechanism: Attack and Defense

2024

The Bitcoin network is susceptible to various attacks due to its openness, decentralization, and plaintext connections. Bitcoin created a misbehavior-score mechanism for monitoring and tracking peer misconduct. In this paper, we uncover several vulnerabilities of …

A Keyless Authentication Based on Zero-Knowledge Proof with SDN Link Information to Secure Permissionless P2P Networking

2024

Most trust models are identity based, which how-ever are not appropriate to the permissionless peer-to-peer (P2P) networking since anonymity is a built-in property in the cryptocurrency system (e.g., Bitcoin). Hence, there exists an inherent trade-off …