Thursday, October 27, 2022
3:30 p.m., Avery 115
4:30 p.m., Avery 115
Wenjing Lou, Ph.D.W. C. English Endowed Professor of Computer Science, Virginia Tech
This talk will introduce two novel applications enabled by blockchain and smart contract technologies. The first one is data usage control. We propose PrivacyGuard, a security platform that combines blockchain smart contract and hardware trusted execution environment (TEE) to enable individual data owner’s fine-grained control over the usage (e.g., which operation, who can use on what condition/price) of their private data. In contrast to data access control, PrivacyGuard is designed to prevent the secondhand misuse of user data, as happened in the Facebook-Cambridge Analytica data scandal. The second application we will introduce is a Blockchain-based Decentralized Spectrum Access System (BD-SAS) in the 5G/nextG era. In contrast to the currently deployed centralized SAS, BD-SAS provides SAS service efficiently to spectrum users and enables automated inter-SAS synchronization, without assuming mutual trust among individual SAS administrators.