报告题目：Blockchain, Smart Contract, and Private Data Usage Control

报告人：Wenjing Lou教授,美国弗吉尼亚理工大学

报告时间：16:00-18:00, 2019年8月5日

报告地点：长安校区 文津楼三段3431

报告摘要: Blockchain, the technology behind Bitcoin, has drawn widespread attention in recent years. As a popular “secure by design” technology, Blockchain has great potential to enable a wide range of distributed applications across a broad spectrum of industries. While blockchain promises decentralization, irreversible record keeping, public verifiability, transparency, and user anonymity, etc., some of these properties are not guaranteed and they come at a very high price. At the same time, excessive overhead and performance deficits may place a fundamental limit on the use of blockchain in many applications. In this talk, we will first examine some fundamental properties of blockchain. We will then introduce “PrivacyGuard”, a blockchain-based private data usage control system that enforces data usage control and thus prevents second-hand data misuse, like the case happened in the Facebook-Cambridge Analytica scandal. PrivacyGuard seamlessly integrates two technologies, smart contract and trusted execution environment (TEE), to overcome the contract execution efficiency problem with a novel trustworthy off-chain contract execution engine.

报告人简介：Wenjing Lou is the W. C. English Professor of Computer Science at Virginia Tech and a Fellow of the IEEE. Her research interests cover many topics in the cybersecurity field, with her current research interest focusing on privacy protection in networked information systems and security and privacy problems in the Internet of Things (IoT) systems. Prof. Lou was a recipient of the NSF CAREER award in 2008. Prof. Lou has published over 100 journal papers and 130 conference papers. Per Google Scholar, her work has been cited 27500+ times and her H-index number is 72. She received Virginia Tech’s Alumni Award for Research Excellence in 2018, the highest research award that can be bestowed to a university faculty. From August 2014 to August 2017, Prof. Lou served as a Program Director at NSF.

Prof. Lou is currently on the editorial boards of IEEE Transactions on Dependable and Secure Computing (TDSC), ACM/IEEE Transactions on Networking (ToN), IEEE Transactions on Mobile Computing (TMC), and Journal of Computer Security. She is the TPC chair for IEEE INFOCOM 2019, SecureCom 2019, and ACM WiSec 2020. She chairs the steering committee of IEEE Conference on Communications and Network Security (IEEE CNS) and is also a member of the steering committees of IEEE INFOCOM and IEEE Transactions on Mobile Computing.