- 講題: Information Security’s New Frontiers: CPS + IoT.
Date & Time: Wednesday 10/21, 15:30 - 16:30
Online at https://global.gotomeeting.com/join/824402845
Yih-Chun Hu is an associate professor in the Department of Electrical and Computer Engineering at the University of Illinois at Urbana-Champaign, an affiliate faculty of Computer Science, and faculty of the Advanced Digital Sciences Center. He is a member of the Coordinated Science Laboratory and the Information Trust Institute. Prof. Hu joined the University of Illinois in August 2005; previously he was a Postdoctoral Researcher at the University of California, Berkeley under Doug Tygar. He received his Ph.D. in 2003 from the Computer Science Department at Carnegie Mellon University while a Visiting Graduate Student in the Computer Science Department at Rice University, and was advised by Dave Johnson. His current research interests are in network security and wireless networks, and he has general research interests in security and systems, with emphasis on the areas of secure systems and mobile communications. He has published papers in the areas of secure Internet routing, DDoS-resilient forwarding, secure routing in wireless ad hoc networks, security and anonymity in peer-to-peer networks, efficient cryptographic mechanisms for routing security, and the design and evaluation of multihop wireless network routing protocols, including Quality-of-Service mechanisms for ad hoc networks.
The last decade has seen computing extended from the digital-only domain to one that controls a wide range of physical processes, including transportation, health, finance, home appliances, and critical infrastructure. This growing environment of cyber-sensing and control makes cyber-attacks significantly more dangerous in the past. This talk will touch on a small slice of projects exploring security in this increasingly computational world, including approaches for securing cross-chain transactions in cyber-finance (blockchain), security for transportation systems, and security and privacy for mobile-app based contact tracing. This talk focuses on two pieces of work in blockchain and in contact tracing.
On the topic of blockchain, I will present HyperService, an architecture for trust-free cross-blockchain programmability. HyperService is comprised of a State Model that describes cross-chain applications in a blockchain-neutral way, a Language in which cross-chain contracts are written, a Network Status Blockchain that serves as a decentralized trust anchor, and an Insurance Smart Contract that adjudicates disputes and ensures that non-malicious nodes do not suffer any financial loss. HyperService ensures the successful completion of contracts whenever all parties follow the protocol, and also financial atomicity; that is, non-malicious nodes do not suffer financial losses in the event of mid-execution failure. Financial atomicity is ensured by requiring each party to make a deposit through the Insurance Smart Contract to reimburse legitimate parties. We implemented and evaluated HyperService in 35,000 lines of code, including three cross-chain applications.
In contact tracing, I will examine some issues in app-based contact tracing, and some approaches for addressing those issues.