His main research interests are in the areas of Cyber Security and Privacy, and Wireless Networking, with current emphases on the following topics:
Security and privacy in cloud computingandbig data: privacy-preserving outsourced data storage, search, and computation; privacy-preserving data analytics, social networks, crowdsourcing, applied cryptography.
Cyber-physical systems security: autonomous vehicular transportation, smart & connected health, etc.
Wireless network and security: network coexistence, cognitive radio networks, wireless physical-layer security.
In the past, he has also done research in wireless networking and mobile computing, with emphases on network coding, opportunistic routing and broadcast.
"Maple: Scalable Multi-Dimensional Range Search over Encrypted Cloud Data with Tree-based Index'', ACM ASIACCS 2014 (with B. Wang, Y. Hou, H. Wang and H. Li)
"Computing Encrypted Cloud Data Efficiently under Multiple Keys'', IEEE CNS-SPCC 2013 (with B. Wang, S. S. M. Chow and H. Li)
"Storing Shared Data on the Cloud via Security-Mediator'', ICDCS 2013 (with B. Wang, S. S. M. Chow and H. Li)
"Privacy-Preserving Multi-keyword Text Search in the Cloud Supporting Similarity-based Ranking'', ACM ASIACCS 2013 (with W. Sun, B. Wang, N. Cao, W. Lou, Y. T. Hou and H. Li) (Distinguished paper award)
"Chorus: Scalable In-band Trust Establishment for Multiple Constrained Devices over the Insecure Wireless Channel'', ACM WiSec 2013 (with Y. Hou and J. D. Guttman)
"SHARP: Private Proximity Test and Secure Handshake with Cheat-Proof Location Tags", ESORICS 2012(with Y. Zheng, W. Lou and Y. T. Hou)