Cong WANG

Cong WANG

Associate Professor
Department of Computer Science
City University of Hong Kong

Office: Y6313, Yeung Kin Man Academic Building (AC1)
Phone: +852 3442 2010
Fax: +852 3442 0503
Email: congwang at cityu.edu.hk

Overview

My current research interests include data and computation outsourcing security in the context of cloud computing, blockchain and decentralized application, network security in emerging Internet architecture, multimedia security, and privacy-enhancing technologies in the context of big data and IoT. My research has been supported by multiple government research fund agencies, including National Natural Science Foundation of China, Hong Kong Research Grants Council, and Hong Kong Innovation and Technology Commission, as well as Amazon Web Services, and Microsoft Azure. Please refer to our group website for more details.

Google Scholar | ORCID | Scopus | CityU Scholar

IEEE SecDev 2018 Tutorial Session A - Building Secure and Trustworthy Blockchain Applications [GitHub] [pdf] [slides]

Recent Publications (Full List)

Journal and Magazine Articles

Qian Wang, Jing Huang, Yanjiao Chen, Cong Wang, Fu Xiao, and Xiangyang Luo, "PROST: Privacy-Preserving and Truthful Online Double Auction for Spectrum Allocation", IEEE Transactions on Information Forensics and Security (TIFS), accepted, 2018.
Helei Cui, Xingliang Yuan, Yifeng Zheng, and Cong Wang, "Towards Encrypted In-Network Storage Services with Secure Near-Duplicate Detection", IEEE Transactions on Services Computing (TSC), accepted, 2018.
Yue Zhang, Jia Yu, Rong Hao, Cong Wang, and Kui Ren, "Enabling Efficient User Revocation in Identity-based Cloud Storage Auditing for Shared Big Data", IEEE Transactions on Dependable and Secure Computing (TDSC), accepted, 2018.
Xingliang Yuan, Jian Weng, Cong Wang, and Kui Ren, "Secure Integrated Circuit Design via Hybrid Cloud", IEEE Transactions on Parallel and Distributed System (TPDS), accepted, 2018.
Jie Zhu, Qi Li, Cong Wang, Xingliang Yuan, Qian Wang, and Kui Ren, "Enabling Generic, Verifiable, and Secure Data Search in Cloud Services", IEEE Transactions on Parallel and Distributed System (TPDS), accepted, 2018.
Yifeng Zheng, Huayi Duan, Xingliang Yuan, and Cong Wang, "Privacy-Aware and Efficient Mobile Crowdsensing with Truth Discovery", IEEE Transactions on Dependable and Secure Computing (TDSC), accepted, 2017.
Jinghua Jiang, Yifeng Zheng, Zhenkui Shi, Xingliang Yuan, Xiaolin Gui, and Cong Wang, "A Practical System for Privacy-Aware Targeted Mobile Advertising Services", IEEE Transactions on Services Computing (TSC), Accepted, 2017.
Fei Chen, Donghong Wang, Ronghua Li, Jianyong Chen, Zhong Ming, Alex X. Liu, Huayi Duan, Cong Wang, and Jing Qin, "Secure Hashing Based Verifiable Pattern Matching", IEEE Transactions on Information Forensics and Security (TIFS), vol. 13, no. 11, pp. 2677-2690, 2018.
Jing Yao, Yifeng Zheng, Cong Wang, and Xiaolin Gui, "Enabling Search Over Encrypted Cloud Data With Concealed Search Pattern", IEEE Access, vol. 6, pp. 11112-11122, 2018.
Xingliang Yuan, Huayi Duan, and Cong Wang, "Assuring String Pattern Matching in Outsourced Middleboxes", IEEE/ACM Transactions on Networking (TON), vol. 26, no. 3, pp. 1362-1375, 2018.
Yifeng Zheng, Huayi Duan, and Cong Wang, "Learning the Truth Privately and Confidently: Encrypted Confidence-Aware Truth Discovery in Mobile Crowdsensing", IEEE Transactions on Information Forensics and Security (TIFS), vol. 13, no. 10, pp. 2475-2489, 2018.
Cong Wang, Yifeng Zheng, Jinghua Jiang, and Kui Ren, "Toward Privacy-preserving Personalized Recommendation Services", Engineering, vol. 4, no. 1, pp. 21-28, 2018.
Zihao Shan, Kui Ren, Marina Blanton, and Cong Wang, "Practical Secure Computation Outsourcing: A Survey", ACM Computing Surveys (CSUR), vol. 51, no. 2, pp. 31:1-31:40, 2017.
Cong Wang, Xingliang Yuan, Yong Cui, and Kui Ren, "Toward Secure Outsourced Middlebox Services: Practices, Challenges, and Beyond", IEEE Network Magazine, vol.32, no. 1, pp. 166-171, 2018.
Huayi Duan, Xingliang Yuan, and Cong Wang, "LightBox: SGX-assisted Secure Network Functions at Near-native Speed", arXiv: 1706.06261, 2017.
Leo Yu Zhang, Yuansheng Liu, Cong Wang, Jiantao Zhou, Yushu Zhang, and Guanrong Chen, "Improved Known-plaintext Attack on Permutation-only Multimedia Ciphers", Information Sciences, vol. 430-431, pp. 228-239, 2018.
Xingliang Yuan, Xinyu Wang, Cong Wang, Chenyun Yu, and Sarana Nutanong, "Privacy-preserving Similarity Joins Over Encrypted Data", IEEE Transactions on Information Forensics and Security (TIFS), vol. 12, no. 11, pp. 2763-2775, 2017.
Yifeng Zheng, Helei Cui, Cong Wang, and Jiantao Zhou, "Privacy-Preserving Image Denoising from External Cloud Databases", IEEE Transactions on Information Forensics and Security (TIFS), vol. 12, no. 6, pp. 1285-1298, 2017.
Helei Cui, Xingliang Yuan, and Cong Wang, "Harnessing Encrypted Data in Cloud for Secure and Efficient Mobile Image Sharing", IEEE Transactions on Mobile Computing (TMC), vol. 16, no. 5, pp. 1315-1329, 2017.
Zhangjie Fu, Fengxiao Huang, Kui Ren, Jian Weng, and Cong Wang, "Privacy-Preserving Smart Semantic Search Based on Conceptual Graphs Over Encrypted Outsourced Data", IEEE Transactions on Information Forensics and Security (TIFS), vol. 12, no. 8, pp. 1874-1884, 2017.
Chenyun Yu, Sarana Nutanong, Hangyu Li, Cong Wang, and Xingliang Yuan, "A Generic Method for Accelerating LSH-Based Similarity Join Processing", IEEE Transactions on Knowledge and Data Engineering (TKDE), vol. 29, no. 4, pp. 712-726, 2017.
Jinghua Jiang, Xiaolin Gui, Yifeng Zheng, Xuejun Zhang, Xingliang Yuan, and Cong Wang, "A Framework of Secure Delivery Service for Targeted Coupons with Encrypted Search", Journal of Xi'an Jiaotong University , vol. 51, no. 2, pp. 13-19, 2017.
Yifeng Zheng, Xingliang Yuan, Xinyu Wang, Jinghua Jiang, Cong Wang, and Xiaolin Gui, "Towards Encrypted Cloud Media Center with Secure Deduplication", IEEE Transactions on Multimedia (TMM), vol. 19, no. 2, pp. 251-265, 2017.
Jinghua Jiang, Yifeng Zheng, Zhenkui Shi, Jing Yao, Cong Wang, and Xiaolin Gui, "Towards Privacy-Preserving User Targeting", Journal of Communications and Information Networks, vol. 1, no. 4, pp. 22-32, 2016.
Xingliang Yuan, Xinyu Wang, Cong Wang, Jian Weng, and Kui Ren, "Enabling Secure and Fast Indexing for Privacy-Assured Healthcare Monitoring via Compressive Sensing", IEEE Transactions on Multimedia (TMM), vol. 18, no. 10, pp. 2002-2014, 2016.
Zhan Qin, Jingbo Yan, Kui Ren, Wen Chen, and Cong Wang, "SecSIFT : Secure image SIFT feature extraction in cloud computing", ACM Transactions on Multimedia Computing, Communications and Applications (TOMM), vol. 12, no. 4s, 2016.
Xingliang Yuan, Xinyu Wang, Jinfan Wang, Yilei Chu, Cong Wang, Jianping Wang, Marie-Jose Montpetit, and Shucheng Liu, "Enabling secure and efficient video delivery through encrypted in-network caching", IEEE Journal on Selected Areas in Communications (JSAC), vol. 34, no. 8, pp. 2077-2090, 2016.
Jia Yu, Kui Ren, and Cong Wang, "Enabling Cloud Storage Auditing With Verifiable Outsourcing of Key Updates", IEEE Transactions on Information Forensics and Security (TIFS), vol. 11, no. 6, pp. 1362-1375, 2016.
Bingsheng Zhang, Kui Ren, Guoliang Xing, Xinwen Fu, and Cong Wang, "SBVLC : Secure Barcode-Based Visible Light Communication for Smartphones", IEEE Transactions on Mobile Computing (TMC), vol. 15, no. 2, pp. 432-446, 2016.
Jinghua Jiang, Yifeng Zheng, Xingliang Yuan, Zhenkui Shi, Xiaolin Gui, Cong Wang, and Jing Yao, "Towards Secure and Accurate Targeted Mobile Coupon Delivery", IEEE Access, vol. 4, pp. 8116-8126, 2016.
Xingliang Yuan, Xinyu Wang, Cong Wang, Anna Squicciarini, and Kui Ren, "Towards Privacy-preserving and Practical Image-centric Social Discovery", IEEE Transactions on Dependable and Secure Computing (TDSC), Accepted, 2016.
Cong Wang, Kui Ren, and Jia Wang, "Secure Optimization Computation Outsourcing in Cloud Computing : A Case Study of Linear Programming", IEEE Transactions on Computers (TC), vol. 65, no. 1, pp. 216-229, 2016.

Conference and Workshop Papers

Chengjun Cai, Yifeng Zheng, and Cong Wang, "Leveraging Crowdsensed Data Streams to Discover and Sell Knowledge: A Secure and Efficient Realization", in The 38th IEEE International Conference on Distributed Computing Systems ((ICDCS'18), Vienna, Austria, 2018.
Yu Guo, Cong Wang, Xingliang Yuan, and Xiaohua Jia, "Enabling Privacy-Preserving Header Matching for Outsourced Middleboxes", in IEEE/ACM International Symposium on Quality of Service (IWQoS'18), Banff, Alberta, Canada, 2018.
Yu Guo, Cong Wang, and Xiaohua Jia, "Enabling Secure and Dynamic Deep Packet Inspection in Outsourced Middleboxes", in International Workshop on Security in Cloud Computing (SCC'18), Songdo, Incheon, Korea, 2018.
Pengfei Zuo, Yu Hua, Cong Wang, Wen Xia, Shunde Cao, Yukun Zhou, and Yuanyuan Sun, "Mitigating Traffic-based Side Channel Attacks in Bandwidth-efficient Cloud Storage", in IEEE International Parallel and DIstributed Processing Symposium (IPDPS'18), Vancouver, British Columbia, Canada, 2018.
Yifeng Zheng, Cong Wang, and Jiantao Zhou, "Toward Secure Image Denoising: A Machine Learning Based Realization", in IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP'18), Calgary, Alberta, Canada, 2018.
Shengshan Hu, Chengjun Cai, Qian Wang, Cong Wang, Xiangyang Luo, and Kui Ren, "Searching an Encrypted Cloud Meets Blockchain: A Decentralized, Reliable and Fair Realization", in International Conference on Computer Communications (INFOCOM'18), Honolulu, HI, USA, 2018.
Xiaoting Tang, Cong Wang, Xingliang Yuan, and Qian Wang, "Non-interactive Privacy-preserving Truth Discovery in Crowd Sensing Applications", in International Conference on Computer Communications (INFOCOM'18), Honolulu, HI, USA, 2018.
Xu Yuan, Xingliang Yuan, Baochun LI, and Cong Wang, "Secure Multi-Client Data Access with Boolean Queries in Distributed Key-Value Stores", in IEEE Conference on Communications and Network Security (CNS'17), Las Vegas, United States, 2017.
Chengjun CAI, Xingliang Yuan, and Cong Wang, "Hardening Distributed and Encrypted Keyword Search via Blockchain", in IEEE Symposium on Privacy-Aware Computing (PAC'17), Washington DC, United States, 2017.
Xiaoning Liu, Xingliang Yuan, and Cong Wang, "EncSIM : An Encrypted Similarity Search Service for Distributed High-dimensional Datasets", in IEEE/ACM International Symposium on Quality of Service (IWQoS'17), Barcelona, Spain, 2017.
Si Chen, Kui Ren, Sixu Piao, Cong Wang, Qian Wang, Jian Weng, Lu Su, and Aziz Mohaisen, "You Can Hear but You Cannot Steal : Defending Against Voice Impersonation Attacks on Smartphones", in IEEE International Conference on Distributed Computing Systems (ICDCS'17), Atlanta, United States, 2017.
Wanyu Lin, Xu Yuan, Baochun Li, and Cong Wang, "Multi-Client Searchable Encryption over Distributed Key-Value Stores", in IEEE International Conference on Smart Computing (SMARTCOMP'17), Hong Kong, China, 2017.
Chengjun Cai, Xingliang Yuan, and Cong Wang, "Towards trustworthy and private keyword search in encrypted decentralized storage", in IEEE International Conference on Communications (ICC'17), Paris, France, 2017.
Xingliang Yuan, Yu guo, Xinyu Wang, Cong Wang, Baochun Li, and Xiaohua Jia, "EncKV: An Encrypted Key-value Store with Rich Queries", in ACM Asia Conference on Computer and Communications Security (AsiaCCS'17), Abu Dhabi, UAE, 2017.
Xingliang Yuan, Xinyu Wang, Cong Wang, Chen Qian, and Jianxiong Lin, "Building an Encrypted, Distributed, and Searchable Key-value Store", in ACM Asia Conference on Computer and Communications Security (AsiaCCS'16), Xi'an, China, 2016.
Yang-Wai Chow, Willy Susilo, Guomin Yang, Man Ho Au, and Cong Wang, "Authentication and transaction verification using QR codes with a mobile device", in International Conference on Security, Privacy, and Anonymity in Computation, Communication, and Storage (SpaCCS'16), Zhangjiajie, China, 2016.
Chengcheng Dai, Xingliang Yuan, and Cong Wang, "Privacy-preserving ridesharing recommendation in geosocial networks", in International Conference on Computational Social Networks (CSoNet'16), Ho Chi Minh City, Viet Nam, 2016.
Xingliang Yuan, Huayi Duan, and Cong Wang, "Bringing execution assurances of pattern matching in outsourced middleboxes", in IEEE International Conference on Network Protocols (ICNP'16), Singapore, 2016.
Helei Cui, Xingliang Yuan, Yifeng Zheng, and Cong Wang, "Enabling Secure and Effective Near-duplicate Detection over Encrypted in-network Storage", in IEEE Conference on Computer Communications (INFOCOM'16), San Francisco, USA, 2016.
Xingliang Yuan, Xinyu Wang, Jianxiong Lin, and Cong Wang, "Privacy-preserving Deep Packet Inspection in Outsourced Middleboxes", in IEEE International Conference on Computer Communications (INFOCOM'16), San Francisco, USA, 2016.

Patents

Helei Cui, Huayi Duan, and Cong Wang, "Method For Accelerating Execution Of Application In A Trusted Execution Environment", Approved by CityU KTO to file in US with case no. PWG/PA/572/8/2017 (US).
Cong Wang, Xingliang Yuan, and Chengjun Cai, "An Electronic Storage System and A Method of Data Management", US Patent Application filed with the USPTO on 6 June 2017, with application no. 15/614,905. Data source from CityU KTO with case no. PWG/PA/540/3/2017 (US).
Cong Wang, Sarana Nutanong, Xingliang Yuan, Xinyu Wang, and Chenyun Yu, "Systems and Methods for Privacy-assured Similarity Joins over Encrypted Datasets", US Patent Application filed with the USPTO on 7 December 2016, with application no. 15/371,953. Data source from CityU KTO with case no. PWG/PA/504/9/2016 (US).
Xingliang Yuan, Yu Guo, Xinyu Wang, and Cong Wang, "Method for Operating a Distributed Key-Value Store", US Patent Application filed with the USPTO on 10 April 2017 with application no. 15/483,052. Data source from CityU KTO with case no. PWG/PA/520/11/2016 (US).
Kurt Partridge, Ersin Uzun, Cong Wang, and Manas Pathak, "Privacy-Preserving Behavior Targeting for Digital Coupons", US patent, granted US8874485 B2, Oct 28, 2014. Online at http://www.google.com/patents/US8874485.
Manas Pathak, Richard Chow, Elaine Shi, and Cong Wang, "Privacy-preserving Collaborative Filtering", US Patent, granted US8478768 B1, Jul 2, 2013. Online at https://www.google.com/patents/US8478768.

Group Members

Current Students

PhD students: Yifeng Zheng (2015.07~), Xinyu Wang (2016.06~), Huayi Duan (2016.09~), Chengjun Cai (2017.09~), Yu Guo (co-supervised with Prof. Xiaohua Jia, 2016.01~), Jing Yao (XJTU-CityU, 2014.09~), Shengshan Hu (WuhanU-CityU, 2016.09~), Yuefeng Du (2018.08~), Xiangyi Meng (2018.08~), Mingyang Deng (2018.09~).
Postdoc researcher: Helei Cui (2018.09~).
Research assistant: Mengyu Yao (2016.08~), Xiaoli Zhang (2017.11~), Anxin Zhou (2018.09~).

Alumni (Full List)

Xingliang Yuan, PhD, 2016, first employment: Lecturer (Assistant professor), Monash University, Australia.
Jinghua Jiang, PhD, 2017, first employment: Senior engineer, Baidu Shenzhen, China.
Chengcheng Dai, PhD, 2017, first employment: Research engineer, Huawei Hangzhou, China.
Yu Zhang, Postdoc, 2016~2017, next employment: Lecturer (Assistant professor), Deakin University, Australia.
Zhenkui Shi, PhD, 2018, first employment: Lecturer, Guangxi Normal University, China.

Selected Awards and Honors

Join the Founding Members of the Young Academy of Sciences of Hong Kong, 2017.
The President's Awards 2016, City University of Hong Kong, 2017.
Best Student Paper Award for IEEE ICDCS 2017, "You Can Hear But You Cannot Steal: Defending Against Voice Impersonation Attacks on Smartphones", by S. Chen, K. Ren, S. Piao, C. Wang, Q. Wang, J. Weng, L. Su, and A. Mohaisen.
Best Paper Award for IEEE MSN 2015, "Towards Secure and Practical Targeted Mobile Advertising", by J. Jiang, X. Gui, Z. Shi, X. Yuan, and C. Wang.
No. 1 top accessed article in INFOCOM'10 (1 out of 276 accepted papers), since 2010.
No. 1 top accessed article in ICDCS'10 (1 out of 84 accepted papers), since 2010.

Selected Recent Grants

"Towards Trustworthy and Secure Outsourced Middleboxes", GRF, PI, Duration: 2018.01~2020.12.
"Security and Privacy-enhancing Technologies for Cloud Storage of Big Data", CRF, Co-I, Duration: 2017.06~2020.05.
"Towards Privacy-assured Network-assisted Content Dissemination", GRF, PI, Duration: 2017.01~2019.12.
"Secure and Privacy-assured Image Services Outsourcing in Cloud Computing", GRF ECS Grant, PI, Duration: 2014.01~2016.11.

Teaching

Course materials available at CityU Canvas.

CS 6290, Privacy-enhancing Technologies (TPg), Semester B, 2017-2018, Course Leader
CS 5222, Computer Networks and Internet (TPg), Semester A, 2012-2018, Course Leader
CS 4293, Topics on Computer Security (Ug), Semester B, 2013, 2015-2018, Course Leader
CS 5293, Topics on Information Security (TPg), Semester B, 2013, 2015-2017, Course Leader
GE 2323, Mobile Social Networks: Practices, Challenges, and Beyond (Ug), Semester B, 2013, Course Leader
CS 3391, Advanced Programming (Ug), Semester B, 2015-2017, Co-instructor

Selected Professional Services

Conference Organizing Committee

TPC Co-Chair, The 12th International Conference on Network and System Security (NSS 2018)
TPC Co-Chair, The 5th International Workshop on Security in Cloud Computing (SCC), in conjunction with the 12th ACM Asia Conference on Computer and Communications Security (ASIACCS 2017)
TPC Co-Chair, Communication and Information Systems Security Symposium (CISS), The IEEE International Conference on Communications (ICC 2017)
TPC Co-Chair, The 15th IEEE International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom 2016)
TPC Co-Chair, The 13th Annual IEEE Consumer Communications & Networking Conference (CCNC 2016)
Local Arrangement Chair, Information Security and Privacy in Social Networks and Cloud Computing (ASI 2014), Hong Kong, Dec 2014
TPC Co-Chair, The 10th International Wireless Communication and Mobile Computing Conference 2014 (IWCMC Security Symposium)

Technical Program Committee Member

IEEE INFOCOM (2014, 2015 2016, 2017, 2018, 2019), IEEE ICC (2014, 2016, 2017), IEEE Military Communications Conference (IEEE MILCOM 2012, 2013, 2014, 2015, 2016, 2017), and IEEE Global Communications Conference (IEEE Globecom 2012, 2013, 2014, 2015, 2016, 2017), IEEE ICDCS (2015, 2016, 2017), IEEE CNS (2015, 2016), ESORICS (2015, 2016, 2017, 2018), SECURECOMM (2016, 2017), ACM AsiaCCS (2016, 2017), etc.

Some Useful Links

Computer Security Conference Ranking and Statistic
- http://jianying.space/conference-ranking.html, ranked by a quantitative metric, Conference Impact Factor (CIF), proposed and maintained by Dr. Jianying Zhou
- http://faculty.cs.tamu.edu/guofei/sec_conf_stat.htm
Networking Conferences Statistics (http://www.cs.ucsb.edu/~almeroth/conf/stats/)
A Wiki for Calls For Papers (http://www.wikicfp.com/cfp/)